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The six-month passport rule: where it applies and where not

Not every country wants six months left on your passport. What Schengen, the US, the UK, Thailand and Indonesia actually require, and how to check.

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5 min read

An open passport with colourful entry stamps across its pages
Photo by Kit (formerly ConvertKit) on Unsplash

The rule that your passport needs six months of validity isn’t universal. Some countries require it, some want three months after you leave, and others only need the passport to be valid for the length of your stay. The catch is that the first person to check isn’t a border officer. It’s the airline agent at check-in, and if they decide your passport doesn’t qualify, you don’t board.

So the useful question isn’t “how many months do I need?” but “what does my destination require, and what about my connections?” The answers differ enough that two months can cost you a trip.

Where the six-month idea comes from

The rule is real in plenty of places, including some of Asia’s most visited countries. Because many people visit several countries on one trip, six months became the safety margin repeated by travel agents and airlines. Following it isn’t wrong. It just isn’t the law everywhere, and sometimes the real requirement is something else entirely, like the date the passport was issued.

Schengen: three months after you leave, issued within ten years

For the Schengen area, which covers most of the EU plus Iceland, Norway, Switzerland and Liechtenstein, the rule is in the EU’s Schengen Borders Code. A visitor’s passport must remain valid for at least three months after the planned date of departure from the area, and it must have been issued within the previous ten years.

The second condition catches people out. A passport issued more than ten years ago can be refused even if it hasn’t expired. And the three months run from the day you leave Europe, not the day you arrive.

The US and the UK: valid for your stay

In principle, the United States asks visitors for six months of validity beyond their stay. In practice, US Customs and Border Protection keeps a list of countries whose citizens are exempt and only need a passport valid for the intended period of stay. The December 2025 version has more than a hundred countries on it, including the UK, Canada, Australia, most of the EU, Japan and Brazil.

The UK asks for the same: the government says your passport should be valid for the whole of your stay. Most visitors also need a UK Electronic Travel Authorisation, which is linked to the passport you apply with.

Thailand and Indonesia: six months on arrival

Here the six-month rule is the real thing. Thailand’s foreign ministry says a passport must be valid for at least six months to enter under the visa exemption. Indonesia’s immigration service, which covers Bali, sets the same minimum for every type of entry, from visa-free visits to visa on arrival, counted from the day you land.

In these countries, a passport that expires in five and a half months won’t work, even for a ten-day holiday.

How to avoid a problem at check-in

  • Check your expiry date when you book. Renewals take time, and processing times can stretch in peak season.
  • Count from the right day. For Schengen, count from departure; for Thailand and Indonesia, from arrival.
  • Look at the issue date too. For Schengen, the passport must be less than ten years old.
  • Think about connections. A transit country may have its own rules, especially if you need to leave the airport.
  • When in doubt, use six months as your margin. It’s the strictest common rule and covers almost every case.
  • Confirm with the official source. Rules change, and the final word belongs to the destination and the airline.

My advice is blunt: if your passport expires within a year and you have an international trip coming up, renew it first. It’s cheaper than losing a flight at the check-in desk.

FAQ

Do I need six months on my passport for Europe?

No. For the Schengen area, your passport must be valid for at least three months after you leave and have been issued within the last ten years.

Does the US require six months of passport validity?

Not for citizens of the countries on CBP’s exemption list, which includes most visa waiver countries. For them, the passport only needs to be valid for the length of the stay.

Which countries require six months of passport validity?

Among popular destinations, Thailand and Indonesia require six months of validity on arrival. Always check the destination’s official website before travelling.

Does the UK require six months?

No. The UK says your passport should be valid for the whole of your stay.

Sources

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