The passport six-month rule, explained
A passport that is technically valid can still get you turned away at check-in. The six-month rule is the most expensive small print in travel — here is how it actually works.
The passport six-month rule is simple to state and brutal in practice: many countries require your passport to remain valid for six months beyond your trip — counted from your arrival or your intended departure, depending on the country. A passport expiring in five months can be perfectly legal at home and useless at the border.
Worse, you usually don't meet the rule at the border. You meet it at the check-in desk, because airlines enforce it — they're fined for carrying passengers who'll be refused entry, so they deny boarding first. The trip most people discover this on is the one leaving in a week.
Who requires what
Three broad patterns cover most of the world:
| Pattern | Typical requirement | Examples (verify before booking) |
|---|---|---|
| Six months | Valid 6 months beyond entry (or departure) | Thailand, Vietnam, Indonesia, India, China, UAE, Singapore, Malaysia, much of the Middle East and Southeast Asia |
| Three months | Valid 3 months beyond intended departure — and issued within the last 10 years | The Schengen area (most of Europe) |
| Duration of stay | Valid for the trip itself | The US and Canada for many visitors; several bilateral agreements soften the rule |
Rules change, and the version that matters is your destination's official one on the day you fly. Treat the table as a map, not a contract — and check the embassy page or IATA's Travel Centre, which is the same database airlines consult when deciding whether you board.
The math that catches families
Adult passports last ten years, so the six-month rule effectively shortens yours to nine and a half. But children's passports last five years — usable for four and a half — and a child's renewal typically can't be done by mail: both parents and the child generally appear in person. The family trip fails on the passport nobody thought to check, because it was issued “recently”. Recently was four years ago.
When to renew
- At nine months remaining, renew. You lose nothing — most countries add the remaining validity or you were inside the danger window anyway — and routine processing takes weeks to a couple of months depending on season.
- Booking a trip? Check every traveller's passport before paying, against the destination's rule plus your return date. Thirty seconds against the most common expensive surprise in travel.
- Blank pages count too. Some countries want one or two free visa pages; a valid passport with a full book fails a different way.
This rule is why Drawer treats a passport differently from a mere expiry date. Snap the family's passports once and it tracks each against the six-month rule, not just the printed date — so the warning arrives while renewal is a form, not a crisis. It's in private beta; the waitlist is open.
Questions people actually ask
Is the six-month rule counted from arrival or departure?
It varies by country — some count from your entry date, some from your intended departure. If you don't want to memorize which, apply the stricter reading: six months beyond the day you leave. The buffer costs nothing.
My passport has seven months left. Am I safe to book?
For entry under a six-month rule at today's dates, yes — but check the rule for your specific destination, and remember the clock keeps running until you actually travel. A trip booked seven months out on a thirteen-month passport fails the rule by departure day.
Can an airline really deny boarding on a valid passport?
Yes, and it's the usual way people meet this rule. Carriers are penalized for transporting passengers who will be refused entry, so the check-in desk enforces destination rules — there's no appeal that gets you on the plane.
How early can I renew a passport?
Generally as early as you like; you don't have to wait for expiry. Renewing with nine months left is the comfortable rhythm — it clears every six-month rule with margin and avoids seasonal processing crunches.