About Will This Bag Fit

One question, answered for 158 airlines: will your bag get past the sizer? The site is run by Stellar Capital, independently of any airline or luggage brand.

Where the airline rules come from

For each of the 158 airlines we read the airline's own baggage page, fare pages and battery rules, and copy the limits exactly as published, in the units the airline uses. Every airline page links to those pages and shows the date we last checked them (5 October 2026 for the current set). Where an airline doesn't publish something — many don't give a personal-item size, or say whether wheels count — we say so rather than fill the gap.

Rules change without notice, so we re-read every airline's pages on a schedule and compare them with what we have. When something changes, the airline page is updated and the change goes on the changes page.

Where the bag sizes come from

The 1,046 bags come from 38 brands' own online stores. We only list a bag when the brand publishes its outside dimensions, and we keep the exact wording the brand used on each bag page. We don't measure bags ourselves and we never estimate a size.

How the fit check works

• Both sizes are compared in centimeters, longest side against longest side, so the bag can be turned whichever way fits.
• Fits means at least 1 cm (0.4 in) to spare on every side. Tight means less than that somewhere, or a soft bag that's over by up to 1 cm on one side and would have to squeeze. Hard cases get no squeeze. Anything else doesn't fit.
• If a wheeled bag's brand doesn't say its size includes wheels and handles, we add 2 cm to the length.
• Where an airline publishes a total (length + width + depth), we check that too. Where it publishes a weight limit and the brand publishes the bag's weight, we show how much is left for packing.
• When an airline publishes sizes in both inches and centimeters, we use the unit it works in: inches for US and Canadian airlines, centimeters for everyone else.

Airline staff decide at the gate. A bag that's right at the limit can still be refused if it's overstuffed.

How we make money

Some links to luggage brands and stores are affiliate links: if you buy, we may earn a commission at no cost to you. That never changes a verdict — the fit check uses the same math for every bag. See the affiliate disclosure.

Contact

Spotted a rule that's changed, or a bag size that's wrong? Tell us and we'll check it against the source.