Originally Posted by
jpschoubert
I guess the morale of the story is that the airline's system at time of res or for the matter check-in failed to flag the violation.
Well, not really. The moral of the story is that the passengers should have checked their immigration/passport details. Ultimately it is down to the traveller to ensure that they comply with the requirements that will/should be checked at check-in/arrival. Even if the airline makes the mistake of letting you board (and thus sent home from the destination, eating the return flight) fault ultimately lies with the person in question. I wish airlines would highlight in bold flashy writing the requirements for passport/visa validity on their website at booking.