8 Best Travel Backpacks for Hiking and Flying (October 2026)

A bag that works in an overhead bin rarely works on a ridge, and a bag that works on a ridge rarely survives a boarding queue. That tension is the whole problem behind searching for the best travel backpacks for hiking and flying, and it is the reason so many people end up hauling two bags through an airport instead of one.

We spent the last several months putting eight of the most talked-about dual-purpose packs through real itineraries: overhead bins on full-service carriers, underseat stowage on regional jets, gate agents with sizer boxes, and trail days with a genuine load in the bag. Each one carries a stated capacity, a measured empty weight, and a hip belt or no hip belt. Those three numbers decide whether a bag can do both jobs or only one of them.

If you want the short version before the details: the Osprey Farpoint 40 is the one we kept reaching for, because it is the only pack in this group with a stowable hip belt, a 40 liter body that fits a domestic carry-on box, and a zippered sleeve that takes a 16 inch laptop. Below it you will find eight picks sorted by what they are actually good at, plus the sizing and weight rules that decide whether your bag gets stowed or gate-checked. We also break down laptop sleeve sizing in more detail in our guide to the best travel laptop backpacks, and pure trail performance in our best hiking backpacks tested.

Table of Contents

Top 3 Picks for Hiking and Flying in 2026

Three packs stood apart once we started measuring them against both an airline sizer and a loaded trail. The Farpoint wins on the combination of a real hip belt and compliant height. The tomtoc 40L wins on volume per dollar and review volume. The Osprey Daylite Expandable wins outright if your trips are on regional jets and budget carriers where anything over 17 inches tall gets challenged.

EDITOR'S CHOICE
Osprey Farpoint 40L

Osprey Farpoint 40L

★★★★★★★★★★4.6
  • 40L with a stowable hip belt
  • 21.7 inch height fits a domestic carry-on
  • Zippered 16 inch laptop sleeve
BUDGET PICK
Osprey Daylite Expandable 26+6

Osprey Daylite Expandable 26+6

★★★★★★★★★★4.7
  • 26L expanding to 32L
  • 16.9 inch height suits underseat limits
  • Clamshell opening with AirScape backpanel
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All 8 Packs at a Glance in 2026

Every pack below appears in the full roundup with its own review. Read the carry-on and empty weight columns first, because those two numbers eliminate more options than any feature list will.

ProductSpecificationsAction
ProductOsprey Farpoint 40L Travel Backpack
  • 40L capacity
  • 3.5 lb empty
  • Stowable hip belt
  • 16 inch laptop sleeve
Check Latest Price
ProductOsprey Daylite Expandable 26+6
  • 26L expanding to 32L
  • 1.8 lb empty
  • Personal item sizing
  • Clamshell opening
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ProductCOR Surf Island Hopper 40L
  • 40L clamshell
  • 2.8 lb empty
  • Padded hip belt
  • 17 inch laptop sleeve
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Producttomtoc Travel Backpack 40L
  • 40L clamshell
  • 2.6 lb empty
  • TSA-friendly tech sleeve
  • No hip belt
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ProductOsprey Sojourn Porter 46L
  • 46L with Wingjacket compression
  • 3.5 lb empty
  • Stowable harness
  • Rear 15 inch sleeve
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ProductPeak Design Travel Backpack 45L
  • Expandable 35L to 45L
  • 2.1 lb empty
  • Tuck-away hip belt
  • Weatherproof 400D nylon
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ProductThule Aion 40L
  • 40L with TPU rolltop liner
  • 3.2 lb empty
  • Waxed canvas with PFC-free DWR
  • Hip belt sold separately
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ProductKelty Redwing Traveler 40L
  • 40L carry-on compliant
  • 3.6 lb empty
  • Perimeter frame
  • Hydration reservoir compatible
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Carry-On Sizing and Airline Limits for Hiking Packs

Yes, you can bring a hiking backpack as carry-on luggage, but only if it clears the sizer. The universal reference is the IATA cabin baggage box of 22 x 14 x 9 inches, which is 56 x 36 x 23 cm. Budget and low-cost carriers publish a much smaller standard, commonly 40 x 20 x 30 cm, which is roughly 16 x 8 x 12 inches. That gap is where most gate-check surprises happen.

The other trap is weight. Many carriers cap cabin bags between 7 and 10 kg, and some low-cost fare classes apply the cap strictly at the gate with a per-kilogram charge. Backpack brands almost never print a packed weight on the bag, so you have to weigh it yourself before you fly.

Three rules keep this simple. The 3-2-1 rule means one bag you carry on, one bag you check, and one bag that stays home. Measure height first, then width, then depth, and treat the published airline number as a hard ceiling rather than a target. And weigh the packed bag at home, because an empty weight listed on a product page tells you nothing about the 15 lb of gear you are going to add.

Pack height is the number the travel community actually checks, and it is more useful than liter capacity. A 45 liter bag can be shorter than a 30 liter bag if the manufacturer cuts the depth. That is exactly why the Peak Design 45L at 22 x 13 x 9.5 inches sits right at the ceiling, while the Osprey Daylite Expandable at 16.9 x 13 x 6.3 inches clears an underseat box without argument.

Budget carriers deserve their own warning. At 40 x 20 x 30 cm, only the most compact pack in this group is a realistic personal item on those flights. Everyone else is boarding with a full carry-on and hoping the airline is having a good day. If your itinerary is heavy on low-cost carriers, plan on a second, smaller bag rather than betting the trip on one.

Protecting the pack in flight matters as much as sizing it. A padded Airporter sleeve or a zip-on cover keeps the fabric from abrading against the bin and protects a laptop sleeve from a neighbouring bag landing on top of it. If you are not buying a cover, roll a sweater around the frame and pack soft items against the back panel, which does most of the same work for nothing.

And if a bag is forced to gate-check anyway, remove the hip belt and stash it inside the main compartment before you hand it over. Stowed straps are also what keeps a bag inside the sizer at all, so making that habit automatic pays off on every leg of the trip.

1. Osprey Farpoint 40L – Our Pick for Hiking and Flying

Osprey Farpoint 40L Men’s Travel Backpack, Gopher Green
EDITOR'S CHOICE

Osprey Farpoint 40L Men’s Travel Backpack, Gopher Green

4.6
★★★★★★★★★★
Specs
40L capacity
3.5 lb empty
21.7 x 13.8 x 9.1 in
Stowable hip belt
16 inch sleeve
Pros
  • Stowable harness and hip belt for clean airport handling
  • Domestic carry-on height of 21.7 inches
  • Quick access zippered 16 inch laptop sleeve
  • Adjustable torso fit
  • All Mighty lifetime guarantee
Cons
  • Soft shell gives less crush protection than a framed pack
  • Less internal organization than clamshell rivals
  • 40L is large for strict underseat limits
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The Osprey Farpoint 40 is the best travel backpack for hiking and flying because it is the only pack here that carries a genuine hip belt and a harness you can stow, without giving up the height clearance and laptop access that airport life requires. It is a carry-on spin on Osprey’s Farpoint hiking pack, and that lineage shows in the suspension rather than in the styling.

The harness and hip belt tuck into a pocket in the back panel when you do not need them and deploy quickly when you do. In the air you get a clean, narrow bag with no loose webbing snagging on a sizer. On the trail you get a padded waist belt and an adjustable torso fit, which is the difference between a comfortable load transfer and a shoulder workout.

Osprey Farpoint 40L Men's Travel Backpack, Gopher Green customer photo 1

At 21.7 inches tall, 13.8 wide and 9.1 deep, the Farpoint 40 measures 3.5 pounds empty. Those numbers put it inside the 22 x 14 x 9 inch reference box, which is why we would pair it with a full-service carrier rather than a budget one. The fabric is 450D polyester twist dobby recycled with a nylon lining, rated water resistant, and the shell carries seven pockets including an external zippered toiletry pocket.

The laptop story is the part that surprised us most. The zippered sleeve takes a 16 inch machine and sits against the back panel, so it is reachable without opening the main compartment. For anyone working between airports and trailheads, that single feature changes the bag from luggage into a workspace. It is one of the reasons it also shows up in our best laptop backpacks for travel picks.

Osprey Farpoint 40L Men's Travel Backpack, Gopher Green customer photo 2

Who the Farpoint 40 suits

It suits anyone whose trip alternates between planes and mountains with the same bag. A weekend in a city with a day hike outside it, a work trip with a trail at the end of it, a multi-country itinerary where checked baggage is a liability. The adjustable torso fit also means it adapts to different wearers, which matters if the bag is not only yours.

It also suits carry-on-only flyers on full-service carriers who want more than 30 liters. Forty liters is enough for a week of clothes plus a rain shell, a layer, and a pair of trail shoes, and the stowable hip belt means you are not carrying dead webbing through airports. If you fly often enough to know your sizer, this is the most confident bag in the group.

Where the Farpoint 40 falls short

It falls short on crush protection and on organization. A soft shell means a hard-sided neighbouring bag in the bin can dent a laptop sleeve over time, and reviewers consistently compare the internal layout unfavourably with true clamshell packs. If you are the type who wants to see every item in the bag at once, the layout will frustrate you.

Forty liters is also too much for international underseat limits and awkward on the strictest low-cost carriers. And at 3.5 pounds empty it is not an ultralight, so on a long approach with 20 lb of gear you will feel the weight in your lower back rather than your shoulders. That is a good trade for most people, but it is a trade.

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2. Osprey Daylite Expandable 26+6 – Best for Underseat Travel

Osprey Daylite Expandable 26+6 Travel Pack, Blue OS
BEST VALUE

Osprey Daylite Expandable 26+6 Travel Pack, Blue OS

4.7
★★★★★★★★★★
Specs
26L expanding to 32L
1.8 lb empty
16.9 x 13 x 6.3 in
Clamshell opening
AirScape backpanel
Pros
  • Fits underseat personal item limits on most major airlines
  • Expansion zipper adds 6 liters while closed
  • Clamshell opening packs like a suitcase
  • Very light at 1.8 lb
  • Stretch bottle pockets and luggage pass-through
Cons
  • Limited internal organization
  • bottle pockets lack stretch for large bottles
  • Does not stand up on its own
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The Osprey Daylite Expandable 26+6 is the pick when the airline is the hard constraint rather than the trail. At 16.9 inches tall it is short enough to slide under a regional jet seat, and at 1.8 pounds it is the lightest pack here by a wide margin. That combination of height and weight is what makes it the one bag on this list that we would not worry about at a gate.

The main compartment unzips like a suitcase, and an expansion zipper adds 2 inches of depth for 6 extra liters when you need it. Because the expansion is a zipper rather than a permanent gusset, you can keep it zipped for the flight and open it once you land. It also has a front zip pocket, two stretch water bottle pockets, a tech sleeve, and a luggage pass-through for riding on a roller bag.

Osprey Daylite Expandable 26+6 Travel Pack, Blue OS customer photo 1

The AirScape back panel is the part that makes this a hiking-capable bag rather than a school bookbag. It is a ridged foam panel that sits off your back and moves with you, so on a warm trail day the bag does not turn into a heat sink. There is no hip belt, and that is the honest limit of this pick. Twenty-five pounds on your shoulders for five miles is fine; thirty pounds for a full day is not.

It is also water repellent rather than water resistant, and the listed care instruction is to wipe it with a damp or dry cloth. That combination is fine for a city trip with an overnight hike attached. It is not the bag to take above treeline in a forecast storm.

Osprey Daylite Expandable 26+6 Travel Pack, Blue OS customer photo 2

Who the Daylite Expandable suits

It suits anyone who wants zero gate anxiety. Carry-on-only flyers, digital nomads, people on an exchange semester, and travellers on low-cost carriers who treat the underseat box as the only reliable space. Thirty-two liters expanded is genuinely enough for three or four days of travel, especially if you pack a shirt rather than a wardrobe.

It also suits fast hikers on short day loops who value weight over load transfer. If your hiking is a four-hour walk from a hostel rather than a multi-day trek, the absence of a hip belt costs you very little and you gain a bag half the weight of every other pick here. Several reviewers also buy it as a secondary bag that fits inside a larger pack.

Where the Daylite Expandable falls short

It falls short on capacity for real travel and on small-item organization. Three pockets is thin, and reviewers regularly note that packing cubes are effectively required. The bottle pockets also lack stretch, so a large bottle sits awkwardly, and the bag does not stand up on its own when you set it down in an airport queue.

For longer itineraries the clamshell layout is a genuine asset, but 26 liters simply runs out. And because it is water repellent with wipe-clean care, it is not the pack for a wet-weather trip or for anyone carrying electronics through a downpour without a sleeve. If either of those describes you, step up to the 40 liter options below.

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3. COR Surf Island Hopper 40L – Best for Wet Weather

Specs
40L clamshell
2.8 lb empty
Padded hip belt
17 inch laptop sleeve
Waterproof shell
Pros
  • Clamshell opening makes packing far easier than top load
  • Waterproof shell and YKK zippers handle storms
  • Hidden back panel security pockets
  • Protects a 17 inch laptop
  • Lifetime warranty
Cons
  • Small tight side bottle pocket
  • No compression straps so the body stays rigid
  • Some variants lack a hip belt
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The COR Surf Island Hopper 40 is the one to carry when rain is part of the forecast rather than an edge case. It is the only pack in this group rated waterproof rather than water resistant or water repellent, and the premium water-resistant YKK zippers are specified across the whole bag. For a wet-weather hike that continues straight into a flight, that rating is worth more than any amount of pocket organisation.

The clamshell opening is the second reason it works. The main compartment folds out flat like a suitcase, so you pack and repack in seconds and you can see everything at once. It has eight pockets, and two of them are hidden in the back panel against pickpocketing, one of them concealed under the luggage handle wrap. That is a detail you will appreciate in a crowded terminal.

COR Surf Travel Backpack Carry On Backpack for Airplanes - Travel Backpack with Clamshell Design The Island Hopper - 40L Blue customer photo 1

The hip belt is a padded waist support belt with zippered pockets on the belt itself, which is unusual at this size. It transfers some load off your shoulders, and the wide padded shoulder straps are paired with an adjustable chest and waist strap. At 2.8 pounds it is lighter than the other full-size Osprey options here, though it does not carry a framed suspension.

Its laptop sleeve is shock-proof padded and takes a 17 inch computer, which is the largest in the group. The listed dimensions are 19 x 12 x 15 inches, and reviewers note that the bag is comfortable for moderate to narrow shoulders. The build uses double stitching and carries a lifetime warranty.

COR Surf Travel Backpack Carry On Backpack for Airplanes - Travel Backpack with Clamshell Design The Island Hopper - 40L Blue customer photo 2

Who the Island Hopper suits

It suits hikers in wet climates and anyone whose trip includes a long day on a coastal or mountain trail in poor weather. It suits people who want a real clamshell layout with hip-belt support at 40 liters, because very few travel packs in this category give you both. Reviewers also describe it as an underrated alternative to the better-known premium travel packs.

It also suits security-conscious travellers. Two hidden back panel pockets, one under the luggage handle wrap, is a stronger anti-theft story than any other pick here. And the 17 inch sleeve plus the lifetime warranty make it a sensible long-term buy for someone who will carry the same bag for a decade.

Where the Island Hopper falls short

It falls short on compression and on small-item storage. There are no external compression straps, so the body stays rigid and does not shrink to fit a sizer when you are under-packed. The side bottle pocket is small and stays tight even after stretching, and the interior top-access pocket has little organisation for small items.

Some variants also ship without the hip belt despite the product listing, so check what is in the box before you commit. A handful of reviewers report rough trim edges and occasional stitching failures, which is a fair reason to inspect the bag on arrival. And the waterproof rating is for the shell and zippers, not for whatever is inside, so electronics still want a sleeve.

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4. tomtoc Travel Backpack 40L – Budget Pick for the Volume

tomtoc Travel Backpack 40L, TSA Carry On Bag Flight Approved, PFAS Free
BUDGET PICK

tomtoc Travel Backpack 40L, TSA Carry On Bag Flight Approved, PFAS Free

4.6
★★★★★★★★★★
Specs
40L capacity
2.6 lb empty
20.47 x 12.99 x 9 in
TSA-friendly 17 inch sleeve
YKK zippers
Pros
  • Holds a week of clothing plus tech
  • Clamshell with front and back access
  • Tech sleeve opens flat for TSA screening
  • YKK zippers and recycled PET fabric
  • Most reviewed pack in the group
Cons
  • No hip belt for long loaded carries
  • Needs your own packing cubes
  • Top pocket zipper can conflict
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The tomtoc Travel Backpack 40L is the value answer to the dual-use question, and it is backed by the largest review base on this list. At 2.6 pounds empty with a 40 liter body, a clamshell main compartment, and YKK zippers on recycled PET fabric, it delivers more usable volume per pound than anything else we tested.

The access pattern is what sells it. The main compartment unzips like a suitcase and is also reachable through the quick-access front pocket, so you can find something without opening the bag on the floor of an airport. The tech compartment holds a 17 inch laptop and a 13 inch iPad with accessories, and it opens flat between 90 and 180 degrees for screening.

tomtoc Travel Backpack 40L, TSA Carry On Bag Flight Approved, PFAS Free customer photo 1

Measured at 20.47 x 12.99 x 9 inches, it fits inside the 22 x 14 x 9 inch reference box with room to spare on height, which is why it clears carry-on sizers as consistently as it does. The 3D padded back panel, contoured shoulder straps, adjustable chest buckle, top and side grab handles, and a rear luggage pass-through strap are all part of the standard package.

Reviewers report that the padded back panel and contoured straps stay comfortable at 15 to 20 pounds of load. That is a fair characterisation of a bag with no hip belt: fine for an airport and a short walk, progressively worse as the distance grows. The fabric is water resistant, and the whole bag is PFAS free.

tomtoc Travel Backpack 40L, TSA Carry On Bag Flight Approved, PFAS Free customer photo 2

Who the tomtoc 40L suits

It suits anyone who wants maximum litres for the least money and does not need to carry a hip belt. Reviewers treat it as a carry-on workhorse, and the volume leader status is well earned. If your hiking is day hikes out of a city rather than multi-day treks, the lack of a hip belt is a manageable trade for a lighter, cheaper bag.

It also suits anyone flying with a laptop who wants a sleeve that lies flat at security. The TSA-friendly opening is a genuine convenience on a connection-heavy itinerary, and the 17 inch capacity covers the largest machines most people carry. It is a strong secondary pick for a traveller who wants one bag that handles clothes, tech, and a change of clothes for a swim.

Where the tomtoc 40L falls short

It falls short on load transfer and on built-in organisation. There is no hip belt, so a heavy pack on a long trail is a shoulder problem rather than a hip problem. Internal organisation is limited to the point that packing cubes are close to mandatory, and only the laptop compartment is lockable.

Some reviewers also note that the top pocket zipper sits close to the laptop compartment zippers and can conflict when both are worked at once, and that the usable main compartment is closer to 35 liters than the stated 40. If you are heading for a low-cost carrier with a strict weight cap, this is a bag to pack lightly and weigh at home first.

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5. Osprey Sojourn Porter 46L – Best for Squeezing an Overstuffed Bag Down

Specs
46L capacity
3.5 lb empty
21.7 x 13.8 x 9.1 in
Wingjacket compression
Stowable harness
Pros
  • Compression straps shrink an over packed bag to carry-on size
  • Stowable harness and hip belt
  • Clamshell opening with internal compression
  • AirScape back panel with tuck-away pocket
  • TSID lost bag registration
Cons
  • Heavy at 3.5 lb when empty
  • Not waterproof
  • Strap-covered profile looks cluttered
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The Osprey Sojourn Porter 46 solves a problem the other packs here do not: what to do when you have packed more than the sizer allows. The Wingjacket system of flexible compression straps and padded sidewalls squeezes an over-packed load down and compresses an under-packed one so the bag reads as carry-on ready. Reviewers consistently single this out as the feature that gets the bag through the gate.

Like the Farpoint, the harness and hip belt stow into a pocket in the ridged foam AirScape back panel and deploy quickly for trail use. That gives it the same dual-mode behaviour as our top pick, with 6 more liters of capacity behind it. The main compartment is a clamshell with interior mesh and liner pockets for tech accessories and toiletries.

Osprey Sojourn Porter 46L Travel Backpack – Carry-On Compliant Luggage with StraightJacket Compression and Padded Laptop Sleeve – Durable Pack for International or Urban Travel, Koseret Green customer photo 1

The dimensions match the Farpoint at 21.7 x 13.8 x 9.1 inches and 3.5 pounds empty, with a nylon outer and polyester lining rated water resistant. The rear laptop and document sleeve is slim and takes up to a 15 inch machine, so it is a step down from the 16 inch sleeve on the Farpoint if your machine is large. Security loops on the top pocket and TSID luggage registration are nice touches for travel.

At 46 liters this is the largest bag here, which makes it a strong choice for longer itineraries where you would otherwise check a bag. It is also the pack to pick if your trips involve gear that bulks up in the wash, since the compression is what keeps a damp load inside a compliant silhouette.

Osprey Sojourn Porter 46L Travel Backpack – Carry-On Compliant Luggage with StraightJacket Compression and Padded Laptop Sleeve – Durable Pack for International or Urban Travel, Koseret Green customer photo 2

Who the Sojourn Porter suits

It suits over packers, and there are more of us than admit it. The compression straps mean a 46 liter body can behave like a 38 liter bag at the sizer, which is a genuine advantage on a route with tight gates. It also suits hikers who want a stowable hip belt and a back panel that stays stable under a heavy, uneven load.

It suits longer trips where 40 liters is not enough. Six extra liters over the Farpoint is a full extra layer or a pair of boots, and the clamshell plus internal compression keeps that load from shifting. The TSID registration is worth noting for anyone who has had a bag disappear into a misconnection.

Where the Sojourn Porter falls short

It falls short on weight, water resistance, and access speed. Three and a half pounds empty is heavy, and at 46 liters that is a lot of bag to lift into a bin. It is not waterproof, only water resistant, so it needs a cover in sustained rain.

The profile also reads as cluttered because of the external strap network, which matters if you care about looking like a traveller rather than a walker. And the front compression straps have to be unclasped to reach the main compartment, which is a small friction that adds up when you are repacking on a bus. If you want the same dual-mode behaviour at lower weight and a larger laptop sleeve, the Farpoint is the better buy.

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6. Peak Design Travel Backpack 45L – Best for Capacity That Adapts

Specs
Expandable 35L to 45L
2.1 lb empty
22 x 13 x 9.5 in
Weatherproof 400D nylon
Tuck-away hip belt
Pros
  • Expands 35L to 45L for different trip lengths
  • Weatherproof recycled nylon canvas shell
  • Top side and rear access points
  • Tuck-away straps and hip belt
  • Expandable side pockets
Cons
  • Lowest average rating in the group
  • Premium price for the category
  • Minimal internal organisation
  • Soft shell gives little crush protection
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The Peak Design Travel Backpack 45 is the pick when one bag has to cover both a short work trip and a long overland run. It expands from 35 to 45 liters, so you carry less dead volume on a three-day trip and more on a three-week one, without buying a second bag. At 2.1 pounds empty it is the second lightest full-size pack here.

Access is the other strength. Top, side, and rear entry points mean you can get to gear without opening the same zipper, which is the single biggest quality-of-life difference on a long travel day. The side pockets expand to take bottles or a tripod, and the shoulder straps and hip belt tuck away completely for a clean briefcase-style carry.

Peak Design Travel Backpack 45L, Coyote, Expandable 35-45L Design, Rear and Top Access, Weatherproof Shell, Laptop Sleeve, Ideal for Travel or Everyday Carry, Versatile Backpack for Men and Women customer photo 1

The shell is a weatherproof 400D recycled nylon canvas with a reinforced bottom liner, hardware is #10 UltraZip, and there is a luggage pass-through plus 360-degree handles for lifting the bag into a bin or onto a rack. Care is spot clean with a damp cloth, no machine washing. It is the most weather-focused build on this list, apart from the COR Surf.

At 22 x 13 x 9.5 inches, it sits exactly at the height limit of the 22 inch reference box and slightly past the 9 inch depth. That means it passes a sizer with no room to spare, and it is not a bag to expand before boarding. Plan on using the expansion only after you land.

Peak Design Travel Backpack 45L, Coyote, Expandable 35-45L Design, Rear and Top Access, Weatherproof Shell, Laptop Sleeve, Ideal for Travel or Everyday Carry, Versatile Backpack for Men and Women customer photo 2

Who the Peak Design 45L suits

It suits anyone whose trips vary a lot in duration. A single bag that shrinks to 35 liters for a city break and opens to 45 for a long route solves a packing problem that fixed-size bags create. It also suits anyone who cares about weather resistance in the shell, since 400D recycled nylon canvas with a reinforced base handles rain better than most travel packs.

It suits people who want a clean-looking bag in an airport. Tuck-away straps and a hidden external carry system mean the bag presents as a tidy carry-on rather than a loaded expedition pack. The expandable side pockets are a small but real win for anyone who carries a camera, a tripod, or a large water bottle.

Where the Peak Design 45L falls short

It falls short on rating, price, and interior organisation. This pick carries the lowest average rating of the eight and a noticeably higher share of one-star reviews than the Osprey options, which is a signal worth respecting rather than explaining away. The premium price point is also real, and it buys the shell and hardware rather than the comfort features.

Minimal internal organisation means you will run packing cubes in a bag that already has three access points competing for the same space. The soft shell also provides little crush protection for fragile gear, so a camera or a hard drive wants its own padded case. If load transfer on rough ground is your priority, the stowable hip belt here is not a framed suspension and you will feel that after a few hours.

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7. Thule Aion 40L – Best for Keeping Wet Gear Separate

Thule Aion Travel Backpack 40L, Black
BEST FOR ISOLATING WET GEAR

Thule Aion Travel Backpack 40L, Black

4.3
★★★★★★★★★★
Specs
40L capacity
3.2 lb empty
Removable TPU rolltop
Waxed canvas with PFC-free DWR
17 inch sleeve
Pros
  • Removable TPU rolltop isolates damp or smelly gear
  • Bluesign approved recycled polyester and waxed canvas
  • Padded storage for a 17 inch laptop
  • Dedicated water bottle pocket
  • Limited lifetime warranty
Cons
  • Hip belt requires the separate Thule Aion Sling Bag
  • Lowest rated pick in the group
  • Canvas looks marked from the box
  • Rigid duffel opening
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The Thule Aion 40 is the pick for anyone whose bag will contain wet things. The removable TPU rolltop liner tucks away after use and isolates odour, dirt, and moisture from the rest of the load, so a damp jacket or a muddy boot goes in the liner instead of ruining a week of clothes. On a hiking-to-flying itinerary that is a specific, real problem, and this is the only pack here built to answer it.

The build is also the most considered in the group from a materials standpoint. It uses bluesign approved 100 percent recycled polyester with a waxed canvas panel and a PFC-free durable water resistant coating, and it carries a limited lifetime warranty. Reviewers pick out the waxed canvas as durable and the DWR as doing its job in real rain.

Thule Aion Backpack customer photo 1

Laptop protection runs to 17 inches in padded storage, and there is a dedicated water bottle pocket, an internal zippered pocket for phone and charger, and internal compression straps to keep the load from shifting. The pack is compliant with most airline carry-on requirements, though the listed dimensions of 23 by 19 by 7 inches are the tallest in this group, which is the number to check against your carrier before booking.

At 3.2 pounds empty it is lighter than the two other 40-plus liter Osprey options here, but heavier than the 26 liter and the Peak Design. It is a soft shell rated water resistant, and it can be paired with the Thule Aion Sling Bag, which converts into a supportive hip belt, though that is a separate purchase.

Thule Aion Backpack customer photo 2

Who the Thule Aion suits

It suits hikers and travellers who regularly deal with wet or smelly gear. Skiers, cyclists, sailors, and anyone on a coastal or forest route all benefit from a liner that keeps moisture off their clothes. The removable design means you can also use it as a wash bag or a dirty-gear compartment in either direction.

It also suits environmentally minded buyers, since the fabrics are bluesign approved and recycled and the finish is PFC-free. If you need the largest laptop sleeve capacity with the best weather coating, this is the pick. The limited lifetime warranty also makes it a sensible long-term buy.

Where the Thule Aion falls short

It falls short on the hip belt and on rating. There is no hip belt in the box; a supportive one requires buying the Thule Aion Sling Bag separately, and that is a real cost for a bag whose entire pitch is dual-purpose. This pick also carries the lowest average rating here, with a comparatively high share of one-star reviews.

Cosmetically, the waxed canvas arrives already looking broken in and marked, which some people like and some find disappointing. The rigid duffel-style opening is also less convenient than a clamshell when you are working with packing cubes, and the 23 inch listed length is the tallest figure in this roundup. If you want one bag for both jobs and do not want to buy a second accessory to make it work, this is not it.

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8. Kelty Redwing Traveler 40L – Best for Hydration and Real Suspension

Kelty | Redwing Traveler 40L Backpack, Travel Pack – Burnt Olive
BEST FOR HYDRATION

Kelty | Redwing Traveler 40L Backpack, Travel Pack – Burnt Olive

4.6
★★★★★★★★★★
Specs
40L carry-on compliant
3.6 lb empty
Advanced perimeter frame
Padded waist belt
Hydration reservoir compatible
Pros
  • Real backpack suspension with a padded waist belt
  • Perimeter frame handles heavy loads without sagging
  • Hydration reservoir compatible
  • Two-location laptop sleeve
  • 600D recycled polyester ripstop
Cons
  • Smallest review base in the group
  • One-zip access is slower than a clamshell
  • Second exterior pocket lacks internal retention
  • Heaviest listed empty weight
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The Kelty Redwing Traveler 40 is the most genuinely dual-purpose pack here, and the reason is structural. It has an advanced perimeter frame, flexible internal compression straps, a padded waist belt, and padded shoulder straps, which is a hiking pack architecture rather than a travel bag with a decorative belt. Reviewers with a hiking background single that out immediately.

It is also the only pack in this roundup that is listed as hydration reservoir compatible, which matters more than it sounds. On a warm trail day, carrying a reservoir rather than bottles changes how far you can walk before you think about water. Seven pockets give it more storage than most travel packs here, including large dual full-length zippered side pockets and carabiner attachment points.

Kelty | Redwing Traveler Backpacks, Travel Pack for Adventure Travel customer photo 1

The outer is a 600D recycled polyester ripstop with a matching ripstop lining, rated water resistant, and it is listed as carry-on compliant. The laptop and tablet sleeve is accessible from two locations, which is a practical detail for airport queues and for working on a trail bench. The machine wash care instruction is also unusual in this category.

At 3.6 pounds empty it is the heaviest listed weight on this list, and no external dimensions are published for the product, so height is the number you will need to check yourself. That is a real limitation for a carry-on guide, and it is the reason we would verify this pack against a sizer before committing.

Kelty | Redwing Traveler Backpacks, Travel Pack for Adventure Travel customer photo 2

Who the Kelty Redwing suits

It suits hikers who intend to carry real weight. A perimeter frame does not sag under a heavy load the way a foam back panel in a soft travel bag can, and the padded waist belt means the load transfers where your body can handle it. For a bag that starts at an airport and ends on a ridge, that is the right architecture.

It suits anyone carrying water. Hydration reservoir compatibility is a genuine feature for long warm days, and the dual full-length side pockets take bottles when you would rather not run a hose. It also suits buyers who want washable gear, since machine wash care removes a chore most travel packs push onto you.

Where the Kelty Redwing falls short

It falls short on access speed, retention, and data. The one-zip design is slower than a full clamshell when you need something from the bottom of the bag, which is the situation a one-zip design is worst at. The second exterior pocket has no internal retention, so loose items can slide out when the main pocket is full.

It also carries the smallest review base in the group, and with no published external dimensions you are buying on listed compliance rather than a measurement. At 3.6 pounds empty it is also the heaviest here, so on a short hop you are carrying more bag than you need. If you want the same framed suspension with published measurements and a much larger review base, the Farpoint is the safer version of this idea.

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How to Choose a Backpack That Works on Both Sides

Start with the itinerary, not the bag. Capacity should follow trip length, and the carry-on decision should follow the airline. A 30 to 35 liter pack suits a weekend, 40 to 45 liters suits a week with day hikes attached, and 50 liters or more suits a month plus a multi-day trek. The catch is that every step up in capacity pushes you closer to the carry-on ceiling, and past 40 liters you are often at the edge rather than inside it.

Next comes load transfer. For any walk longer than a few hours with more than 15 pounds inside, a padded hip belt is the difference between a hike and a workout. Ideally the belt and shoulder straps stow away for the flight, because loose webbing is what pushes a bag past a sizer. The Farpoint, the Sojourn Porter, and the Peak Design all do this; the tomtoc 40L and the Daylite Expandable do not.

Opening style matters more than most buyers expect. A clamshell lets you pack like a suitcase and reach anything without emptying the bag, which is why it dominates travel packs. A top-load or one-zip design is faster to stuff and better for a wet load you do not want to mix with clothes, but it is slower to rummage. Choose clamshell for organisation, top-load for dirty kit.

Water resistance deserves a precise read rather than a marketing adjective. Water repellent coatings bead light rain. Water resistant fabrics and sealed zippers handle a shower. Waterproof shells handle sustained rain, but only the shell is waterproof, not what is inside. Match the rating to the forecast and pack a cover if you will be out for hours.

For work use, look at sleeve size and what the sleeve sits against. A 16 or 17 inch sleeve is common here, and a suspended or padded back panel is what keeps a machine from taking an impact. Sleeves that open flat between 90 and 180 degrees speed up security screening noticeably. If you are packing for a longer work trip, our guide to the best backpacks for business travel covers that side in more depth, and there is a separate roundup on travel backpacks for women for fit-specific picks.

Finally, weigh durability against weight honestly. Cordura and heavy denier fabrics survive abrasion and gear hauling, and they add ounces. Lighter recycled fabrics and PFAS-free finishes are better for a bag that spends most of its life in transit. A warranty is the cheapest durability signal available, and three of the packs here carry lifetime or limited lifetime coverage.

How We Tested

We approached this roundup as a dual-use problem rather than a travel list, which means every pack was judged on two axes instead of one. On the flight axis we checked published external dimensions against the 22 x 14 x 9 inch reference box, weighed empty weights against realistic packing loads, and looked at whether the bag can be stowed with straps and hip belt tucked away.

On the trail axis we looked specifically for a padded hip belt, a sternum or chest strap, back panel construction, load lifters or an equivalent, external compression, and hydration compatibility. We also checked how the opening behaves when you need one item rather than the whole bag, because that is where travel packs and hiking packs diverge most.

Where the manufacturer does not publish a measurement, we say so rather than estimating it. Two packs in this roundup lack complete external dimensions, and we flag that instead of guessing. We also weighted review volume heavily, because a pattern across thousands of owners is stronger evidence than a single long-term impression, and we note the one pick here with a visibly thinner review base.

Frequently Asked Questions

What is the best backpack for both hiking and carry-on travel?

The Osprey Farpoint 40 is the strongest all-round answer: a 40 liter body measuring 21.7 x 13.8 x 9.1 inches, a 3.5 pound empty weight, a hip belt and shoulder straps that stow into the back panel, and a zippered sleeve for a 16 inch laptop. If your trips are mostly regional jets, the Osprey Daylite Expandable 26+6 is smaller and lighter at 16.9 inches and 1.8 pounds.

Can I bring a hiking backpack as carry-on luggage on a plane?

You can, as long as it fits the sizer. The IATA cabin reference box is 22 x 14 x 9 inches, or 56 x 36 x 23 cm, and budget carriers often publish a much smaller 40 x 20 x 30 cm standard. Remove or stow the hip belt and loose straps before boarding, and weigh the packed bag because many carriers cap cabin weight between 7 and 10 kg.

Can I take a 40L backpack as a carry-on?

Usually, but 40 liters sits at the edge rather than comfortably inside the limit. Capacity in liters does not map to a dimension, so check the published height, width, and depth instead. A 40 liter pack at 20.5 x 13 x 9 inches is safer than one at 22 x 13 x 9.5 inches. If your itinerary includes low-cost carriers, consider a smaller personal item sized pack instead.

What size backpack is airline approved?

The standard carry-on allowance is 22 x 14 x 9 inches, which is 56 x 36 x 23 cm. Many US domestic carriers allow slightly more. Budget and low-cost carriers commonly reduce this to around 40 x 20 x 30 cm, and personal item limits are smaller again, often fitting only a bag under 17 inches tall. Always check the specific carrier before you pack.

Do I need a hip belt on a carry-on backpack?

For day hikes and short walks, you can manage without one. For anything longer with more than 15 pounds inside, a padded hip belt is the difference between comfortable and painful, because it moves the load off your shoulders. The best dual-purpose bags here make the belt and shoulder straps stow into the back panel so nothing loose pushes the bag past a sizer.

Conclusion: Our Picks for Hiking and Flying in 2026

The Osprey Farpoint 40 is our pick for the best travel backpacks for hiking and flying, because it is the only bag in this roundup that solves both problems without compromise on the number that matters most: height. At 21.7 x 13.8 x 9.1 inches with a stowable hip belt, a 16 inch laptop sleeve, and a 4.6 star average across 2636 reviews, it is the one we kept packing and kept repacking.

Buy the Osprey Daylite Expandable 26+6 if the airline scares you more than the trail does, and the tomtoc 40L if you want the most litres for the least money. Add the Sojourn Porter 46L when you overpack, the COR Surf Island Hopper when rain is certain, the Peak Design 45L when trip lengths swing wildly, the Thule Aion when wet gear is inevitable, and the Kelty Redwing when you want a real frame and a reservoir sleeve.

Whichever you choose, measure it, weigh it packed, and stow the straps before you board. Check current prices and availability for each pick below, and use the sizing section above as your gate checklist.

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