In 2001 was due to fly WLG AKL SYD on Air New Zealand after visiting my parents. Got to the check In agent and she said ‘Oh you were supposed to travel yesterday’. I nearly had kittens until she said 'Don’t worry we have plenty of spare seats’ and I flew back on the same flights I was supposed to be on the day before at no extra cost

I felt such a goose!

I was at LAX last year and a Swedish family were checking in for the NZ flight to LHR with an onward connection, when the check in agent announced ‘Actually, you are flying tomorrow’. Later I saw a very heated discussion outside Terminal 2 with the wife and husband with 3 crying kids in tow taking place. I felt sorry for the husband