Originally Posted by
TWA884
Yes; however, when checking in while not logged in to the AAdvantage account, one has to enter the PNR. That, in turn, pulls up their profile including the passport information. I would think that depending on which passport they are going to use to enter their destination, it is possible change the passport information in their AAdvantage profile prior to checking in to a flight.
For the UK - US dual citizen, travelling from the US to the UK, this is getting tricky, creating a conflicting set of requirements:
- As US citizen, you have to leave the US using your US passport, so that passport details have to be on your boarding pass
- As UK citizen, you have to have your UK passport on the booking during check-in, to avoid IDB
- A UK citizen, technically, is not allowed to obtain ETA, unless they lie during the application process
When the ETIAS system is up, this will create a similar problem for the UE - UK dual citizens.