Exped Skyline 15 vs. REI Co-op Trail 40

Two carry-on travel backpacks, compared spec for spec.

Exped Skyline 15

Front facing view of the Exped Skyline 15
Capacity15 L
Weight1.1 kg
Dimensions52×26×16 cm
Airline fit89%
Price$130

Feature by feature

Exped Skyline 15FeatureREI Co-op Trail 40
Storage
4 Compression 4
None Expanded Capacity None
1 Opening 1
front Passport top
N Passthrough N
Carry
Y Backpack Y
Y Hip Belt Y
Y Sternum Strap removable
Inside
N Laptop N
4 Main Compartments 5
N Organizer Y
Outside
× Hard Shell ×
Y Rain-fly Y
2, side Water Bottle Holder 2, side
Y Water Resistant Y
Material
210D Robic HD Ripstop Nylon, PU Coated 1500mm210-denier ripstop nylon

REI Co-op Trail 40

Capacity40 L
Weight1.2 kg
Dimensions56×30×23 cm
Airline fit47%
Price$130

Key differences between the Exped Skyline 15 and REI Co-op Trail 40

Both have: compression straps, backpack straps, hip belt, rain cover, water bottle pockets, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 88 accept both. 80 accept only the Exped Skyline 15, and 0 accept only the REI Co-op Trail 40.

Only the Exped Skyline 15 fits

Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Malta, Air Mauritius, Air Serbia, Air Seychelles, All Nipon Airways, ANA, Asiana Airlines, ATA Airlines, Austrian, Azerbaijan Airlines, Blue Air, Boliviana de Aviacion, Brussels Airlines, Bulgaria Air, China Eastern, Czech Airlines, Emirates Airlines, Enter Air, Ethiopian Airlines, Eurowings, Fiji Airways, Flair Air, flybe, Gol Linhas Aereas, Great Lakes Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Japan Airlines, Jet Airways, Juneyao Airlines, Kenya Airways, KLM, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Meridiana Fly, Mesa Airlines, Nordwind Airlines, Norwegian, Pakistan International, Peach, Porter Airlines, Royal Brunei Airlines, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, TUI, Turkish Airlines, Ukraine International, VIM Airlines (Closed), Volotea, WestJet, Xiamen.

Exped Skyline 15 vs. REI Co-op Trail 40: which should you pack?

The REI Co-op Trail 40 carries 25L more than the Exped Skyline 15 (15L vs. 40L), while the Exped Skyline 15 is the lighter pack at 1.1kg (vs. 1.2kg). For carry-on flexibility, the Exped Skyline 15 fits 89% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the REI Co-op Trail 40; if you want to travel lighter, the Exped Skyline 15 is the better call.