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Dual citizenship and API

Athlone, Ireland
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Dual citizenship and API

I am travelling to the States with my boyfriend next week and I booked his ticket with his Irish passport but when I was adding the advanced passenger information with Aer Lingus I had to use his US passport details - does anyone know is this going to cause problems travelling?


Destination Expert
for Israel
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12,577 posts
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1. Re: Dual citizenship and API

Of course it won't cause problems. Thousands of people have dual citizenship, and at any one time they use whichever passport is more convenient if it avoids the need for a visa, or if it means a cheaper visa. Most countries demand that you enter and leave that country on that country's passport, but beyond that, you can use whichever passport you like, switching in midair.

I have dual UK and Israeli citizenship. I must leave and enter Israel on my Israeli passport. Visiting the UK (or any EU country) it is obviously easier to enter on my British passport. If (hypothetical) Country A demands a visa in advance for Israeli citizens but not for EU citizens, I would obviously enter Country A on my British passport. And if Country B is more accommodating to Israelis than to EU citizens, I would enter Country B on my Israeli passport. This is something that is totally routine and causes no problems at all. Your boyfriend might be asked to show his other passport with the details supplied to the airline, but that's all.

London, United...
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2,048 posts
662 reviews
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2. Re: Dual citizenship and API

It is mandatory that you provide passport information. However, If your BF has a US passport, you should stick to it. NO need to apply ESTA for him. If you have an Irish passport, you need to do so.

3. Re: Dual citizenship and API

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