I live in Sweden; I have an American friend, currently studying in the UK, who had planned to visit this weekend (returning to the UK directly afterwards).
Unfortunately, she noticed this week that her passport has only about 2 months validity left, so we are trying to work out what passport validity rules apply for US citizens visiting Sweden. A requirement of 3 months’ outstanding validity is mentioned in several places, e.g. here on the Swedish immigration agency website, but it’s not clear to us whether this applies only to travellers who need a visa to visit Schengen as a tourist (and so wouldn’t apply to US tourists). So I have two questions:
What is the relevant passport validity restriction?
If the 3 month rule applies, is this a strict requirement that’s always enforced, or just one that airline or immigration officials may require if they see other reasons to be concerned?