We went looking for bin dimensions by aircraft type and found that no manufacturer publishes them. Not Boeing, not Airbus, not Embraer. Here is everything that is published, labelled with what it actually measures.
Boeing, Airbus and Embraer each publish an Airplane Characteristics for Airport Planning document. These are the definitive dimensional references for an aircraft — hundreds of pages of measurements used by airports to plan gates and ground equipment. None of them contains any overhead bin data. They cover the cargo holds beneath the floor, not the stowage above your head. We read them to check.
So when a site shows you “737 overhead bin: 24 × 16 × 10 inches”, that number did not come from Boeing. It came from someone with a tape measure, or from another site that copied it.
| Aircraft | Bin | What is published | What that measures |
|---|---|---|---|
| Boeing 737-800, 737 MAX 8/9 | Space Bin | Six standard bags per bin, against four in the pivot bins they replaced. Boeing defines the standard bag as 9 × 14 × 22 in. ManufacturerBoeing |
A bag count |
| Boeing 737-800 (Alaska) | Space Bin | Alaska states each Space Bin stows six bags and raised overhead room by 48%, and that the bin’s bottom edge hangs about 2 in lower than before. Airline’s own wordsAlaska Airlines newsroom |
A bag count and a relative measurement |
| Airbus A321neo | Airspace XL | Airbus says the bins take luggage up to 24 × 16 × 10 in, and four bags per bin instead of three. ManufacturerAirbus |
The largest bag the bin can hold — not an allowance |
| Airbus A320 family (retrofit) | Airspace L | Bags load vertically, on their side, up to 24 in. Airbus claims a 60% capacity increase from that change alone. ManufacturerAirbus |
A maximum bag height, stowed rotated |
Two total-volume figures also exist, from the regional-jet planning manuals: the CRJ-900 at 144.47 ft³ and the CRJ-700 at 114.06 ft³ of overhead bin volume, and the Embraer E175 at 2.0 ft³ per passenger. Volume answers “how much in total” and never “will my bag fit”, and dividing it by a seat count would be our arithmetic rather than the manufacturer’s — the CRJ manuals say outright that the volume changes with interior configuration. So we are not going to do that division for you.
Delta Connection aircraft with 50 seats or fewer take personal items only. Delta says so directly, and gate-checks the carry-on free of charge. Airline’s own wordsDelta
On most American Eagle regional aircraft a bag bigger than the personal item must be valeted before boarding. American names one exception: the Embraer E175, which takes a normal carry-on and offers no valet. Airline’s own wordsAmerican Airlines
United Express is not one rule. On CommutAir-operated flights you get one personal item only; other United Express operators take a carry-on but United warns space is limited. Airline’s own wordsUnited Airlines
No other US carrier publishes an aircraft-specific carry-on rule. Alaska, Southwest, JetBlue, Hawaiian, Frontier, Allegiant, Breeze and Sun Country all state one limit for the whole fleet. We checked rather than assumed.
Boeing 737-800 and MAX 8 without Space Bins, the Boeing 717, 757 and 767, the Airbus A220, standard non-XL A320-family bins, and the 50-seat CRJ-200 have no published bin dimension, volume or bag count from either the manufacturer or the operator. The CRJ-200 is the starkest: its planning manual, unlike the CRJ-700 and CRJ-900 manuals, carries no overhead bin section whatsoever. If you have seen a number for any of these, it was not published by the people who built the aircraft.
Nobody publishes the answer. Boeing, Airbus and Embraer produce Airplane Characteristics for Airport Planning documents, which are the definitive dimensional references for each aircraft, and none of them contains overhead bin data — they cover lower-deck cargo holds. Any site showing you a bin opening in inches derived it from a photograph or from another site.
Boeing states that each Space Bin on the 737 holds six standard bags, against four in the older pivot bins it replaced. Boeing defines that standard bag as 9 x 14 x 22 inches. This is a bag count, not a dimension, and it does not tell you the size of the opening.
No. The airline’s published carry-on limit is the rule, and it does not change with the aircraft. Bigger bins mean fewer people get gate-checked when the flight is full — that is a capacity improvement, not a size allowance. Airbus does advertise its XL bins as taking a bag up to 24 x 16 x 10, but that is what the bin can physically hold, not what your ticket entitles you to carry.
Regional jets, and on the smallest ones the airline simply removes the question. Delta states that Delta Connection aircraft with 50 seats or fewer take personal items only, with the carry-on gate-checked free of charge. American requires most regional bags to be valeted before boarding, explicitly exempting the Embraer E175. The 50-seat CRJ-200 is the clearest case, and notably its own planning manual contains no overhead bin data whatsoever.
Fleet variation, mostly. The same airline flies aircraft with and without upgraded bins, and a bin loaded early has space a bin loaded last does not. Boarding order does more to decide whether your bag goes overhead than any published dimension.
Manufacturers publish dimensions inconsistently, and a “20-inch” spinner is almost never 20 inches once you count the wheels. Where a brand states dimensions including wheels and handles, that’s the number we use. Where it only publishes the case, we say so on the card. Airlines measure the outside of your bag — wheels, handles, straps and all. Anything marked borderline is down to the gate agent, and remember that a soft bag squashes into a sizer while a hard shell won’t.
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Limits verified August 2026 against each carrier’s published policy. Airlines change these without notice — always confirm before you fly. Spirit Airlines ceased operations on 2 May 2026 and is no longer listed.
Airline Bag Size Checker v1.0.15 · last updated 2026-08-12