Few years back the usual announcement “Welcome on board to this E****t flight to London Luton …..” was immediately followed by a kerfuffle behind us and a male passenger hastily leaving the plane as he thought the plane was going to Birmingham !!!
Different airline, a few months later, and a passenger complaining that already seated family were in the wrong seats. Cabin crew came to sort it out and the seated family were on the wrong plane !!! They were going to the same destination but were booked on a later flight.
All the checks in the world and it’s still possible to get on the wrong place
B-E