FlyerTalk Forums - View Single Post - Traveling from US to UK and back, Dual Citizen question
Old Nov 19, 2015 | 5:53 am
  #5  
sbm12
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Originally Posted by lhrsfo
I never had a problem arriving in the US on my US passport and arriving in the UK on my UK passport. UA can keep both in its profile.
I once tried to. Enter the UK on my US passport and the Immigration officer was not happy: he made me produce my UK passport and told me always to enter on that.
This.

Always enter a country using that country's passport if you have it. You can leave the US on a US passport (no real checks anyways) and enter the UK on the UK one from the same flight. It is what you're supposed to do.
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