Travelling on British and EU passports

[Belleende]

Myself and my children are entitled to Irish passports and I have applications under way. We also have British passports.

We will be traveling to Portugal this summer. Is it possible to use both passports to get in the quickest queues each side or do we have to use the same passport on both legs?

I’m wondering the same, have Irish and UK passports.

Interesting question, I would like to know the answer.

Use whichever passport is most convenient for you to enter the country. You'll have to use whichever passport you put down when you booked the flights for check in though.

DH leaves UK on his British passport, enters home country on his local ID card. He then needs to leave that country in the same fashion (so local ID card - if he tried to do it on his UK passport, flags would get raised as to how he entered), and then renters the UK on his British passport.

My son has a second country passport - my reading of the rules is that when entering the UK he has to use his British passport, when entering/leaving the second country he has to use that passport, otherwise he can use either.

This would mean that if we flew from the UK to the other country, he'd have to have both passports with him, and use a different one at each end. In practise I'd carry both and let immigration decide!

Some airlines ask you to enter passport info when you book (and of course that must match at check-in).

Does that ticket info tie up with immigration systems in any way?

in theory you have to enter your country of origin with that passport.

so a portuguese/british national should travel to portugal on the portuguese passport and back on the uk passport.

but until now they were not very strict with that. canada or us are very strict.

You’d have to take both to return to the UK on the UK passport.

Intntl law is that you are supposed to present with the passport of the country you're entering (if you have such a passport). In reality, I find only the Americans are huffy about enforcing this. But probably R other countries that care. Leaving passport presentation depends what passport you used to book the flight with.