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I am dual national of country X and Y.

When I will be traveling from country X to Y, I want to use country Y's passport.

When I will be coming back to country X from Y, I want to use country X's passport.

Would there be any issues what so ever not just on airports but in future ?

Mathematics
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1 Answers1

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That's generally not a good idea. Whether it's actually a real problem depends on your specific citizenships.

Best & safest rule in my experience is

Always enter and leave a country on the same passport

Keep in mind that the round trip contains 4 border interactions, not just 2. Leave X, enter Y, leave Y, enter X.

So if you are going from X to Y you should use BOTH passports: PassX to exit X and PassY to enter Y. On the return do it the other way around use PassY to exit Y an PassX to enter X.

You can use two passports for a single flight and Airlines are perfectly capable of handling two passports when you check in.

CAVEAT: there are over 30,000 combination of X and Y and this post is only inteded to cover the "typical" rules. Many countries don't have exit controls (US) and many countries simply don't care which passport you use.

Hilmar
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