I once booked a return ticket which did not go back to the same airport (though it was the same city, 2 hours of public transport appart). I was pretty confused

I once booked a return ticket which did not go back to the same airport (though it was the same city, 2 hours of public transport appart). I was pretty confused while waiting at the gate when they announced the "wrong" airport, took me a while to realise I was not at the wrong gate and that it was actually my flight.