Airline fit checker
Will your backpack fit?
Measure the packed outside, including bulging pockets and handles. Dimensions can suggest a fit; your fare, aircraft and gate staff determine acceptance.
Choose your airline and enter all three dimensions to see a comparison.
How this comparison works
We compare all three outside dimensions in the orientation you enter. We do not assume soft fabric can be squeezed smaller. If an airline does not publish a universal size, the result stays uncertain. A dimensional pass does not add a bag to a fare that excludes it, or confirm a shared weight allowance.
Rules checked September 10, 2026. Follow the official link in your result to recheck before departure.