How Strict Are Airline Carry-On Sizes?
Why some airports measure every bag and others rarely do — and how to plan for the worst case.
Policy vs enforcement
Published sizes are the rules. Enforcement varies by airline, airport, and how full the flight is. Budget carriers and peak travel days see more sizer checks.
Plan to the published limit
FitsTheBin always scores against published dimensions. Treat tight fits as a warning, not a guarantee.
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