Originally Posted by jib71

Even though IATA seems to suggest it will be fine, my advice would be to pay for an expedited passport renewal rather than travelling on a soon to expire passport.

If your son does travel with his current passport, he might find that it's no problem at all, but I would advise him to be prepared for some questions from the immigration officials. It might be a good idea to prepare some documents to back up his story - i,e. print out his itinerary, airplane tickets, insurance documents, hotel reservations and evidence of funds to support himself.