Passport Validity Rules Explained: Six Months, Three Months and Blank Pages
What the 'six-month rule' actually means, why some countries use three months or the length of stay, how blank-page requirements work, and why airlines check this before you board.
Short answer
Many countries require your passport to be valid for a set period beyond your departure date — commonly six months, sometimes three, sometimes only the length of your stay. Some also require blank pages. Airlines check these rules at check-in and can refuse boarding, so verify both validity and pages well before you travel.
Key points
- Count validity from the date you leave the country, unless the rule says otherwise.
- Some countries count from arrival — read the rule carefully.
- Blank-page requirements are separate from validity.
- Airlines enforce entry rules and can deny boarding.
"Your passport must be valid for six months" is one of the most common entry rules in the world — and one of the most misunderstood. Here's what it means, where it varies, and how to avoid problems at check-in.
What validity rules say
A validity rule sets the minimum time your passport must remain valid. The three common versions:
| Rule | Your passport must be valid… | Example if you leave on 1 June |
|---|---|---|
| Six months | At least six months beyond departure | Until at least 1 December |
| Three months | At least three months beyond departure | Until at least 1 September |
| Length of stay | At least until you leave | Until at least 1 June |
Most rules count from the date you leave the country, but some count from arrival. Read the wording on the official site carefully.
Check your dates with the passport validity checker.
Blank pages
Separately from validity, some countries require one or two completely blank visa pages for entry stamps or visas. "Blank" usually means no stamps at all on either side. Endorsement pages at the back of some passports may not count.
Who checks — and when
- Airlines check document requirements at check-in. If your passport doesn't qualify, they can refuse to board you, because they may be fined for carrying passengers who are refused entry.
- Border officers make the final decision on arrival.
Practical tips
- Check validity when you start planning, not when you pack.
- Renew if you're close. Many travellers renew when nine months or less remain.
- Count every country on the route, including transit countries if you pass through immigration.
- Keep a photo of your passport separately from the passport itself, in case of loss.
- Check the name on your ticket matches your passport exactly.
The bottom line
Validity and blank-page rules are easy to meet if you check early. Confirm the exact rule for your nationality on the destination's official website, then run your dates through the checker. Next: entry requirements travellers often overlook.
Questions readers ask
Does an emergency or temporary passport work?
Some countries accept them and others don't. If you're travelling on an emergency or temporary passport, check the destination's rules specifically.
Do transit stops count?
Sometimes. If you pass through immigration in a transit country, its rules may apply. Check every country on your route.