Monos Check-In Large: 30 x 21 x 11 in
check-in-large, hardside, 4 spinner wheels, 10.6 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 62 linear inches against your airline's checked limit.
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Does the Check-In Large fit? All 19 airlines
30 x 21 x 11 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 check6 in over |
| Southwest Airlines | 24 x 16 x 10 | Gate check6 in over |
| Sun Country Airlines | 24 x 16 x 11 | Gate check6 in over |
| Alaska Airlines | 22 x 14 x 9 | Gate check8 in over |
| Allegiant Air | 22 x 16 x 10 | Gate check8 in over |
| American Airlines | 22 x 14 x 9 | Gate check8 in over |
| Avelo Airlines | 22 x 14 x 9 | Gate check8 in over |
| British Airways | 22 x 18 x 10 | Gate check8 in over |
| Delta Air Lines | 22 x 14 x 9 | Gate check8 in over |
| Hawaiian Airlines | 22 x 14 x 9 | Gate check8 in over |
| JetBlue Airways | 22 x 14 x 9 | Gate check8 in over |
| United Airlines | 22 x 14 x 9 | Gate check8 in over |
| Air France | 21.7 x 13.8 x 9.9 | Gate check8.3 in over |
| Emirates | 21.65 x 14.96 x 8.66 | Gate check8.4 in over |
| Lufthansa | 21.65 x 15.75 x 9.06 | Gate check8.4 in over |
| Ryanair | 21.65 x 15.75 x 7.87 | Gate check8.4 in over |
| Turkish Airlines | 21.65 x 15.75 x 9.06 | Gate check8.4 in over |
| Air Canada | 21.5 x 15.5 x 9 | Gate check8.5 in over |
| Qatar Airways | 19.69 x 14.57 x 9.84 | Gate check10.3 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