I have had to change my passport to travel, but the number on my passport for the flight back is different to the flight going out. Do I need to get it changed? How can I do this?

  • Nobody cares if you update it or not: travel.stackexchange.com/questions/79636/… – JonathanReez Aug 1 '17 at 20:41
  • I'm a dual citizen and I routinely change passports on round-trip flights, using one issued by one country on the way out and the other country on the way back. This has never raised any questions let alone caused problems. Surely flying with a different passport from the same country would be even less likely to cause problems. – phoog Aug 2 '17 at 11:39

You need to provide your passport number at check in time. As flights can be booked almost a year ahead it's not uncommon to have your passport number (in my case, citizenship even, last year) change between booking and flight.


It depends how strict the countries involved are. Regardless, there are two options: You change it now or you change it later, up to check-in time.

It is common for stolen, lost or damaged passports to be replaced with one having a different number, so this is not something to really worry about it.

You can call the airline and have the change recorded in advance which will allow you to complete the online checkin process when your flight time comes. Otherwise, many (at least American ones) will fail to validate your passport info and you will be asked to do the check-in in person. Again, it is not a big issue, maybe needs a little more time than with online checking, depending on the airport/airline.

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