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flights from sydney to bangkok one way is this allowed?

i wanted to fly to bangkok book flight over there to vietnam and fly out of saigon booking the return over there because i dont know the dates i wanted to come back to sydney is this allowed or will customs turn me away without a return ticket when i arrive?

Public Comments

1. You should be fine, I live in Bangkok and in over 50 trips into Thailand before I acquired my resident visa I was never asked to show a return ticket, nor have I known anyone who has been asked. As long as you look somewhat presentable you won't be asked to show a return ticket. In the unlikely event you are asked, just explain your travel plan and you should be fine. Have fun.