Monos Carry-On: 22 x 14 x 9 in
carry-on, hardside, 4 spinner wheels, 7 lb empty. Exterior figures are the maker's own, wheels and handles included.
Cabin approved at 12 of 19 airlines
The table below shows the verdict at every airline, best fit first, using the same math as the live fit checker. For why so many carry-ons fail the US standard box, see our 22 x 14 x 9 breakdown.
As an Amazon Associate we earn from qualifying purchases. Links are affiliate links; it costs you nothing extra.
Does the Carry-On fit? All 19 airlines
22 x 14 x 9 in against each airline's published carry-on box, largest side to largest side, sorted best fit first.
| Airline | Cabin max (in) | Verdict | Under seat |
|---|---|---|---|
| Sun Country Airlines | 24 x 16 x 11 | Cabin approved2 in to spare | No |
| Frontier Airlines | 24 x 16 x 10 | Cabin approved1 in to spare | No |
| Southwest Airlines | 24 x 16 x 10 | Cabin approved1 in to spare | not published |
| Alaska Airlines | 22 x 14 x 9 | Tight squeeze0 in to spare | not published |
| Allegiant Air | 22 x 16 x 10 | Tight squeeze0 in to spare | No |
| American Airlines | 22 x 14 x 9 | Tight squeeze0 in to spare | No |
| Avelo Airlines | 22 x 14 x 9 | Tight squeeze0 in to spare | No |
| British Airways | 22 x 18 x 10 | Tight squeeze0 in to spare | No |
| Delta Air Lines | 22 x 14 x 9 | Tight squeeze0 in to spare | not published |
| Hawaiian Airlines | 22 x 14 x 9 | Tight squeeze0 in to spare | not published |
| JetBlue Airways | 22 x 14 x 9 | Tight squeeze0 in to spare | No |
| United Airlines | 22 x 14 x 9 | Tight squeeze0 in to spare | No |
| Air France | 21.7 x 13.8 x 9.9 | Gate check0.3 in over | No |
| Emirates | 21.65 x 14.96 x 8.66 | Gate check0.4 in over | not published |
| Lufthansa | 21.65 x 15.75 x 9.06 | Gate check0.4 in over | No |
| Turkish Airlines | 21.65 x 15.75 x 9.06 | Gate check0.4 in over | No |
| Air Canada | 21.5 x 15.5 x 9 | Gate check0.5 in over | No |
| Ryanair | 21.65 x 15.75 x 7.87 | Gate check1.1 in over | No |
| Qatar Airways | 19.69 x 14.57 x 9.84 | Gate check2.3 in over | not published |
Bag spec source: monos.com · accessed 2026-07-09. Airline limits come from each carrier's official baggage page; open an airline above for its citations. Policies change, so verify a borderline case before you fly.
Monos publishes both imperial (inches) and metric (centimeters) dimensions on every product page, and each hardside suitcase page explicitly states that the listed exterior measurements include the wheels and fixed handles, meaning these are overall, gate sizer style dimensions rather than body only. Monos does not publish a separate body only figure for any line checked, and its two soft sided Metro bags do not carry this wheel inclusion note since they have no wheels.
All 12 Monos bags
