Originally Posted by
david55
I have found that it is not the Mexican immigration you have to worry about with a one way ticket....but the counter agent at the airport when you check-in. Some of them know the " law" and will not let you board w/o some sort of return ticket or evidence of your intent to return. Most of the times they don't give it a second look.... but occasionally you get the strict agent who at the very most...makes you buy a return ticket before checking you in. ( Buy a full fare and refund it once you are in Mexico)
They're not quoting the law, they’re referring to IATA TIMATIC. That’s what airlines follow, and personnel are generally quite strict about it. If they allow a passenger who fails to meet the stipulated requirements, they can get into trouble, particularly because if one is refused on arrival the airline responsible for their arrival will generally have to transport the passenger back to their origin and may be subject to a $10,000 fine.
One can fill in detail and see what the IATA requirements for travel are. United Airlines offers a version of Timaticweb
here.
(Two friends of mine secured Business Class travel on Cathay Pacific round trip US gateway to Delhi via Hong Kong. When they got to Delhi, there was a small error with her online travel authority. Her passport was confiscated, she was escorted to the gate and onto the CX flight to HKG, where she was escorted to the next flight to her US gateway city. She was given her passport upon arrival at that city. CX was required to transport her, meaning they had to boot a paying passenger off the full flight, and she lost her paid travel arrang3ments in India as well as her miles.)