ETIAS and dual citizenship: which passport should you use?

The simple rule

Dual citizenship sounds complicated, but the rule is short. Look at the passports you hold. If any of them is from an EU, EEA or Swiss country, or is an Irish passport, travel on that one. You will not need ETIAS, because those passport holders are not in scope.

If none of your passports gives you that free pass, you choose the one you will actually travel on. ETIAS is expected to be tied to a single passport, so the choice you make is the passport your authorisation belongs to.

If one passport is EU, EEA or Swiss

Citizens of EU, EEA and Swiss countries have free movement within Europe. They do not apply for ETIAS, full stop. So if you hold, say, a German passport alongside a non-EU one, the German passport settles it. Carry it, present it at the border, and there is nothing to apply for.

You do not have to surrender or hide your other passport. You simply travel on the one that keeps things simplest, which is the EU, EEA or Swiss document.

Irish passport and the Common Travel Area

Irish citizens sit in the same easy position. Ireland is outside the ETIAS scheme, and under the Common Travel Area an Irish passport does not require ETIAS for travel in Europe. If one of your passports is Irish, use it and skip ETIAS entirely.

Two non-EU passports

Plenty of people hold two visa-exempt non-EU passports, for example UK and Australian, or US and Canadian. In that case neither passport gives you free movement, so you will need an ETIAS once the system is live.

Pick the passport you will actually travel on, apply with it, and travel on it. There is no advantage in applying with one passport and then showing up at the border with the other. ETIAS is linked to the exact passport you used to apply.

Enter and leave on the same passport

Once you have chosen, stick with it for the whole trip. Border systems record your entry against the document you present, so entering on one passport and leaving on another can leave your records out of step. Using the same passport in and out keeps everything consistent.

The same logic applies if your trip takes in several countries. Your first country of entry is recorded against that one passport, and a single ETIAS is expected to cover the whole journey.

Make sure your booking matches

One detail trips people up. The name and passport details on your flight or ferry booking should match the passport your ETIAS is linked to. Airlines check travel documents before they let you board, so a mismatch between your ticket, your ETIAS and your passport can cause problems before you even reach the border.

What to do now

There is nothing to apply for yet. ETIAS is not live, and it is expected to start in the last quarter of 2026. The useful step today is to decide which passport you will travel on, so you are ready the moment applications open.

When the system goes live, the only official place to apply will be the EU site at travel-europe.europa.eu/etias.