Osprey Flapjack vs. Cotopaxi Nazca 24L

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

Osprey Flapjack

Front facing view of the Osprey Flapjack
Capacity21 L
Weight0.9 kg
Dimensions49×34×23 cm
Airline fit72%
Price$110

Feature by feature

Osprey FlapjackFeatureCotopaxi Nazca 24L
Storage
Compression
None Expanded Capacity None
0 Opening 0
side Passport top
N Passthrough N
Carry
Y Backpack
removable Hip Belt
Sternum Strap
Inside
15in Laptop 15in
3 Main Compartments 3
Y Organizer N
Outside
× Hard Shell ×
N Rain-fly N
Water Bottle Holder
Y Water Resistant Y
Material
600D Polyspuncotton/polyester canvas shell

Cotopaxi Nazca 24L

Front facing view of the Cotopaxi Nazca 24L
Capacity24 L
Weight1.1 kg
Dimensions51×27×14 cm
Airline fit90%
Price$140

Key differences between the Osprey Flapjack and Cotopaxi Nazca 24L

Both have: laptop sleeve, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 134 accept both. 2 accept only the Osprey Flapjack, and 36 accept only the Cotopaxi Nazca 24L.

Only the Osprey Flapjack fits

Etihad Airways, Qatar Airways.

Only the Cotopaxi Nazca 24L fits

Air Baltic, Air China, Air Malta, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, flybe, Great Lakes Airlines, Icelandair, InselAir, Juneyao Airlines, Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Pakistan International, Royal Brunei Airlines, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Volotea, Xiamen.

Osprey Flapjack vs. Cotopaxi Nazca 24L: which should you pack?

The Cotopaxi Nazca 24L carries 3L more than the Osprey Flapjack (21L vs. 24L), while the Osprey Flapjack is the lighter pack at 0.9kg (vs. 1.1kg). For carry-on flexibility, the Cotopaxi Nazca 24L fits 90% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Cotopaxi Nazca 24L; if you want to travel lighter, the Osprey Flapjack is the better call.