Millican Smith 25L vs. Osprey Flapjack

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

Millican Smith 25L

Front facing view of the Millican Smith 25L
Capacity25 L
Weight1.1 kg
Dimensions52×28×18 cm
Airline fit89%
Price$145

Feature by feature

Millican Smith 25LFeatureOsprey Flapjack
Storage
N Compression
None Expanded Capacity None
2 Opening 0
side Passport side
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt removable
removable Sternum Strap
Inside
15in Laptop 15in
4 Main Compartments 3
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder
Y Water Resistant Y
Material
Weatherproof Bionic Canvas600D Polyspun

Osprey Flapjack

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

Key differences between the Millican Smith 25L and Osprey Flapjack

Both have: passport pocket, backpack straps, hip belt, laptop sleeve, built-in organizer, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 132 accept both. 36 accept only the Millican Smith 25L, and 4 accept only the Osprey Flapjack.

Only the Millican Smith 25L 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.

Only the Osprey Flapjack fits

Etihad Airways, Oman Air, Qatar Airways, Royal Jordanian.

Millican Smith 25L vs. Osprey Flapjack: which should you pack?

The Millican Smith 25L carries 4L more than the Osprey Flapjack (25L vs. 21L), while the Osprey Flapjack is the lighter pack at 0.9kg (vs. 1.1kg). For carry-on flexibility, the Millican Smith 25L fits 89% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Millican Smith 25L; if you want to travel lighter, the Osprey Flapjack is the better call.