Many moons ago a US couple boarded a flight from LAX to Oakland. They were a little surprised many hours later to be still in flight. Enquiring of the cabin crew what was happening they were told they were approaching Honolulu and would land within the hour!
The couple had boarded an Air NZ flight LAX to Auckland. The couple mistaking Auckland for Oakland had somehow managed not only to board with an incorrect boarding pass but had failed to see how they required passports for a short domestic flight that departed from the International terminal! ANZ were fined a huge amount but whether the immigration folk at LAX suffered at all is not known.