My husband and I sponsored his daughter. She is from Thailand and we live in Canada. This winter, we are going to Thailand and she will be coing back with us. I am shopping for plane tickets. I find that if I buy 3 tickets leaving from Canada and coming back with Qatar airways is the cheapest option. If I just buy her one way ticket leaving from thailand it would cost twice as much for her ticket. I want to know, if she is not using the first flight, will she be allowed on the flight back?