To answer the OP's question, there is no issue
Originally Posted by
darabo
Now I am curious, I am living in the USA although I have citizenship for both the UK and the USA so I was wondering if, for example I go on a trip to the UK, I could leave/enter the USA with my US passport and enter/leave the UK with my British passport?
Can one apply that logic with any two passports or are there any rules against it in some countries?
Yes you can, although US immigration will freak as the Advanced Passenger Information will not match what you gave the airline.......
Originally Posted by
daniellam
I would suggest the OP just go to aircanada.com and buy a fully refundable one-way Canada --> UK ticket for his wife.
That way, when checking in in the UK with a UK passport (with no work permit, and PR card for Canada, while a Canadian citizen with only a Citizenship card), they can use this ticket to show the check-in agent if asked.
Once back in Canada, the OP can then get a refund on the ticket.
Why? Airlines are responsible for the carriage and cost of returning you to the point of departure if you are refused entry........