Passport and entry rules

This is the only rule on this site that can end a trip before it starts — and the check that catches people is not the one at the Italian border.

The two conditions, together

To enter the Schengen area on a non-EU passport, the document must satisfy both of these at once. The Schengen Borders Code puts it plainly: its validity shall extend at least three months after the intended date of departure from the territory of the Member States, and it shall have been issued within the previous 10 years.

Read that twice

Three months beyond the day you leave Europe — not beyond the day you arrive.
Issued less than ten years ago. Some countries have issued passports with more than ten years of validity printed on them, through added months or renewal extensions. A passport can therefore be unexpired and still fail this condition.

Source: Regulation (EU) 2016/399 (Schengen Borders Code), article 6(1)(a).

Why people are stopped at check-in, not at the border

Airlines carry the cost of flying back anyone who is refused entry, so they check documents themselves at departure — and they apply their own rules, which are frequently stricter than the law.

The widely repeated "six month rule" is airline and industry practice, not Schengen law. But practice is what is applied at the desk, and an argument about the correct legal interpretation is not one you can win before the flight closes.

The practical rule

If your passport expires within a year of your return date, renew it before you book anything expensive. It costs a fraction of what a missed departure costs, and it removes the entire question.

Biometric registration at the border (EES)

The European Union has introduced an Entry/Exit System that digitally records non-EU travellers crossing the external Schengen border, replacing passport stamping. At the first crossing it captures fingerprints and a facial image.

For travellers, the important points are short:

There is nothing to apply for and nothing to pay. It happens at the border on arrival.
Allow more time on your first entry, particularly at large arrival airports, and be careful with tight onward connections booked as separate tickets.

ETIAS is a different thing, and it is not in force yet

ETIAS is a separate, chargeable travel authorisation that has not yet started. Any website selling you an ETIAS today is a scam. When it does start, apply only through the official EU channel.

Sources: European Commission and IATA guidance on the new EU entry requirements; the US State Department publishes the same guidance for American travellers at travel.state.gov.