Monos Check-In Medium: 26.5 x 18.5 x 10.5 in
check-in-medium, hardside, 4 spinner wheels, 9.6 lb empty. Exterior figures are the maker's own, wheels and handles included.
Checked luggage: too big for every overhead bin we track
Checked allowances are about linear inches and weight rather than a sizer, so compare this bag's 55.5 linear inches against your airline's checked limit.
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Does the Check-In Medium fit? All 19 airlines
26.5 x 18.5 x 10.5 in against each airline's published carry-on box, largest side to largest side, sorted best fit first.
| Airline | Cabin max (in) | Verdict |
|---|---|---|
| Frontier Airlines | 24 x 16 x 10 | Gate check2.5 in over |
| Southwest Airlines | 24 x 16 x 10 | Gate check2.5 in over |
| Sun Country Airlines | 24 x 16 x 11 | Gate check2.5 in over |
| Alaska Airlines | 22 x 14 x 9 | Gate check4.5 in over |
| Allegiant Air | 22 x 16 x 10 | Gate check4.5 in over |
| American Airlines | 22 x 14 x 9 | Gate check4.5 in over |
| Avelo Airlines | 22 x 14 x 9 | Gate check4.5 in over |
| British Airways | 22 x 18 x 10 | Gate check4.5 in over |
| Delta Air Lines | 22 x 14 x 9 | Gate check4.5 in over |
| Hawaiian Airlines | 22 x 14 x 9 | Gate check4.5 in over |
| JetBlue Airways | 22 x 14 x 9 | Gate check4.5 in over |
| United Airlines | 22 x 14 x 9 | Gate check4.5 in over |
| Air France | 21.7 x 13.8 x 9.9 | Gate check4.8 in over |
| Emirates | 21.65 x 14.96 x 8.66 | Gate check4.9 in over |
| Lufthansa | 21.65 x 15.75 x 9.06 | Gate check4.9 in over |
| Ryanair | 21.65 x 15.75 x 7.87 | Gate check4.9 in over |
| Turkish Airlines | 21.65 x 15.75 x 9.06 | Gate check4.9 in over |
| Air Canada | 21.5 x 15.5 x 9 | Gate check5 in over |
| Qatar Airways | 19.69 x 14.57 x 9.84 | Gate check6.8 in over |
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
