
Japan is one of the more relaxed countries on passport validity — but the rules still matter, and airlines sometimes apply their own stricter checks.
Duration of stay only. Must be valid for the duration of your stay.
Must be valid for the duration of your stay.
Japan does not have a six-month passport validity rule for visa-exempt visitors — this includes UK, US, EU, Australian and Canadian passport holders staying under 90 days. The official requirement is that your passport is valid for the duration of your stay, and Japanese immigration at Narita, Haneda and Kansai apply this literally.
Where it gets confusing is that some airlines and travel agents still tell customers they need six months, either from outdated internal training or from cautious blanket policies. British Airways and JAL now correctly apply the "valid for stay" rule; some US carriers connecting through Asia still ask for the six-month buffer. If you're stopped at check-in with 3-6 months of validity for a direct Japan flight, ask them to run the Timatic check specifically for your nationality — it will return a green result.

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