Deuter Trans Alpine 30 vs. REI Co-op Trail 40

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

Deuter Trans Alpine 30

Front facing view of the Deuter Trans Alpine 30
Capacity30 L
Weight1.3 kg
Dimensions53×28×24 cm
Airline fit40%
Price$170

Feature by feature

Deuter Trans Alpine 30FeatureREI 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
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly Y
2, side Water Bottle Holder 2, side
Y Water Resistant Y
Material
210D PA, 600D PES210-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 Deuter Trans Alpine 30 and REI Co-op Trail 40

Both have: compression straps, backpack straps, hip belt, built-in organizer, 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. 50 accept both. 25 accept only the Deuter Trans Alpine 30, and 38 accept only the REI Co-op Trail 40.

Only the Deuter Trans Alpine 30 fits

Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Caraibes, Air France, Air India, Air Mauritius, All Nipon Airways, ANA, Boliviana de Aviacion, Czech Airlines, Gol Linhas Aereas, Great Lakes Airlines, Iberia, Indigo, Interjet, Iran Air, Japan Airlines, Jet Airways, Kenya Airways, KLM, LATAM , Peach, Sky Airlines.

Only the REI Co-op Trail 40 fits

Air Asia, Air Macau, Air Wisconsin, AirAsiaX, Alaska Airlines, Allegiant Air, American Airlines, Avianca , Bahamasair, Bangkok Airways, Biman Bangladesh, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, CommutAir, Delta Airlines, Dragonair, EVA Air, Garuda Indonesia, Hawaiian Airlines, Hong Kong Airlines, jetBlue Airways, Jetstar Airways, Jetstar Asia, Kulula, Malaysia Airlines, Mango, Qantas Airways, Republic Airways, Skywest, Inc., South African Airways, SriLankan Airlines, Trans States, United Airlines, Vietnam Airlines, Virgin Atlantic.

Deuter Trans Alpine 30 vs. REI Co-op Trail 40: which should you pack?

The REI Co-op Trail 40 carries 10L more than the Deuter Trans Alpine 30 (30L vs. 40L), while the REI Co-op Trail 40 is the lighter pack at 1.2kg (vs. 1.3kg). For carry-on flexibility, the REI Co-op Trail 40 fits 47% 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 REI Co-op Trail 40 is the better call.