Global flight baggage guide
Why does carry-on size change by airline?
Overhead-bin space and fare products differ. The operating carrier’s published dimensions—not a generic global size—control your segment.
Scope
Applies to airline allowance, separate from airport security rules.
Before-you-fly checklist
- 1Measure including wheels and handles.
- 2Check the operating carrier for every segment.
- 3Use the smallest applicable limit on a mixed itinerary.
Reviewed: 2026-09-09
Official sources
Rules vary by airline and route
Always verify important restrictions with your airline and the official security authority before departure.