ETA - Dual citizens must have valid UK passport
#121
First time using both passports since the Feb 2026 change flying US to UK to US with British Airways. Had to use British passport to checking for US to UK. On the return was not able to check in online, there was no option I could see to change my passport and only an option to provide ESTA or greencard info.
I'm currently having fun with that as well with BA. I'm in Nigeria, flying back to Heathrow tomorrow, overnight Gatwick then on to Tampa Saturday. Using US passport details (as I have done for years), it now tells me I can't do online checkin because there is no ETA on file for the UK. So, I change my passport details to my UK one....and then it tells me I still can't checkin on line as I have no ESTA details on file for the US!! Bah. Airport check in desk it is then.
Hopefully they will adjust their website to factor all this in at some point in future.
Hopefully they will adjust their website to factor all this in at some point in future.
#122
Forum Regular



Joined: Feb 2005
Posts: 212
From: Orange County, CA











Just went to United’s site to upload a new passport into my profile, and noticed they had an option for up to 2 to be loaded. Hopefully more airlines will follow.
#123
BE Enthusiast





Joined: May 2019
Posts: 527















