If you fly regularly you will know this but having just witnessed a very disappointed young couple at Gatwick, thought it bears a reminder.
If you travel on any international flights you must have AT LEAST 3 months validity left on your passport, before you leave.
A young, American or Canadian ( I think, as they had dark blue passports) couple were turned back at Gatwick, at the gate! as they were boarding for Nice. He only had 2 months left on his passport, so they could not travel.
It was suggested he/they go to the American Embassy on Monday to see if they can help.
It was also pointed out that the expiry date should have been picked up when he booked…
Hope they like London 🙁