REI Co-op Ruckpack 18 vs. Osprey Flapjack
Two carry-on travel backpacks, compared spec for spec.
REI Co-op Ruckpack 18
| Capacity | 18 L |
| Weight | 0.7 kg |
| Dimensions | 44×26×18 cm |
| Airline fit | 96% |
| Price | $65 |
Feature by feature
| REI Co-op Ruckpack 18 | Feature | Osprey Flapjack |
|---|---|---|
| Storage | ||
| Compression | ||
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| side | Passport | side |
| N | Passthrough | N |
| Carry | ||
| Backpack | Y | |
| removable | Hip Belt | removable |
| removable | Sternum Strap | |
| Inside | ||
| 15in | Laptop | 15in |
| 2 | Main Compartments | 3 |
| Y | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| Water Bottle Holder | ||
| Y | Water Resistant | Y |
| Material | |
| 210-denier nylon ripstop | 600D Polyspun |
Key differences between the REI Co-op Ruckpack 18 and Osprey Flapjack
- Main compartments: 2 on the REI Co-op Ruckpack 18; 3 on the Osprey Flapjack.
Both have: passport pocket, 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. 136 accept both. 45 accept only the REI Co-op Ruckpack 18, and 0 accept only the Osprey Flapjack.
Only the REI Co-op Ruckpack 18 fits
Air Baltic, Air China, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Air Tahiti, American Eagle, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Bulgaria Air, China Eastern, easyJet, Emirates Airlines, Enter Air, flybe, Great Lakes Airlines, Gulf Air, Icelandair, InselAir, Juneyao Airlines, Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Pakistan International, Ravn Alaska, Regional Express, 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), Virgin Australia, Volotea, Xiamen.
REI Co-op Ruckpack 18 vs. Osprey Flapjack: which should you pack?
The Osprey Flapjack carries 3L more than the REI Co-op Ruckpack 18 (18L vs. 21L), while the REI Co-op Ruckpack 18 is the lighter pack at 0.7kg (vs. 0.9kg). For carry-on flexibility, the REI Co-op Ruckpack 18 fits 96% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Osprey Flapjack; if you want to travel lighter, the REI Co-op Ruckpack 18 is the better call.