Patagonia Tres Backpack 25L vs. Tatonka Flightcase 27

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

Patagonia Tres Backpack 25L

Front facing view of the Patagonia Tres Backpack 25L
Capacity25 L
Weight0.9 kg
Dimensions48×31×17 cm
Airline fit92%
Price$129

Feature by feature

Patagonia Tres Backpack 25LFeatureTatonka Flightcase 27
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
N Passport front
Y Passthrough Y
Carry
hideable Backpack hideable
N Hip Belt N
Y Sternum Strap Y
Inside
15in Laptop 15in
1 Main Compartments 4
Y Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
Y Water Resistant N
Material
630-denier 100% nylon, 200-denier 100% recycled polyesterT-Travel Tex Melange Eco

Tatonka Flightcase 27

Front facing view of the Tatonka Flightcase 27
Capacity27 L
Weight1.1 kg
Dimensions52×28×16 cm
Airline fit89%
Price$150

Key differences between the Patagonia Tres Backpack 25L and Tatonka Flightcase 27

Both have: luggage passthrough, backpack straps, sternum strap, laptop sleeve.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 167 accept both. 7 accept only the Patagonia Tres Backpack 25L, and 1 accept only the Tatonka Flightcase 27.

Only the Patagonia Tres Backpack 25L fits

Belavia, Etihad Airways, Oman Air, Qatar Airways, Regional Express, Royal Jordanian, Virgin Australia.

Only the Tatonka Flightcase 27 fits

Great Lakes Airlines.

Patagonia Tres Backpack 25L vs. Tatonka Flightcase 27: which should you pack?

The Tatonka Flightcase 27 carries 2L more than the Patagonia Tres Backpack 25L (25L vs. 27L), while the Patagonia Tres Backpack 25L is the lighter pack at 0.9kg (vs. 1.1kg). For carry-on flexibility, the Patagonia Tres Backpack 25L fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Tatonka Flightcase 27; if you want to travel lighter, the Patagonia Tres Backpack 25L is the better call.