Baggage size and weight
Each airline publishes specific dimensions and weight limits for carry-on and checked baggage. The limits vary not just by airline but by route: a carry-on accepted on a transatlantic flight may be too large for an intra-European flight on the same airline. Always check the limit for the exact route, not the airline's general policy.
Travel documents
Many countries require a passport with at least six months of validity beyond the date of arrival. Some require a printed onward ticket, an electronic visa obtained in advance, or proof of accommodation. Airlines will deny boarding to passengers who do not meet the destination's documentary requirements — and will not refund the fare.
Name changes and corrections
The name on your ticket must match your government-issued ID exactly. Most airlines allow minor corrections (a missing middle name, a typo) for free, but a true change of traveler is treated as a cancellation and a new booking. Married name changes, in particular, cause friction at the airport without supporting documentation.
Restricted items
Lithium batteries, certain power banks, e-cigarettes, and aerosols are subject to carriage rules that vary by airline. Some items are forbidden in checked baggage but permitted in carry-on; others are forbidden entirely. The airline's website lists the rules for the specific aircraft type you'll be flying.
Key takeaways
- Check baggage rules per route, not per airline.
- Verify your passport's validity and visa requirements before booking.
- Names on tickets and IDs must match exactly.
- Lithium batteries and similar items have detailed carriage rules.