How to decipher international airline baggage policies
To master airline baggage, check your booking confirmation for your specific fare class and use a luggage scale to weigh your bags before leaving home. Always verify the rules of the operating carrier, which may differ from the airline that sold you the ticket.
- Check the operating carrier, not just the booking airline. If you booked a codeshare flight (e.g., booked through United but flying on Lufthansa), the baggage policy usually defaults to the 'Most Significant Carrier' or the carrier operating the first leg. Check their website specifically, not your travel agent's email.
- Identify your fare class. Airlines now use 'Basic Economy' or 'Light' fares that include zero checked bags. Log into your booking on the airline's website to see the exact allowance attached to your confirmation number rather than reading the general policy page.
- Measure dimensions, not just weight. International airlines care about the sum of dimensions (Length + Width + Height). Most standard checked bags must be under 158cm (62 inches). If your bag is larger, you will pay an 'oversized' fee regardless of the weight.
- Pre-pay for bags online. Never wait until you reach the airport. Pre-paying for baggage online typically saves you 30-50% compared to paying at the check-in counter.
- What is the 'Most Significant Carrier' rule?
- It is an IATA rule that determines which airline's baggage policy applies to your journey based on which carrier operates the longest flight segment.
- Does my carry-on weight matter?
- Yes. While US domestic airlines rarely weigh carry-ons, many international carriers (especially in Asia and Europe) have strict 7kg to 10kg limits for carry-on bags.