I'm a US passport holder getting ready to buy a one way ticket to Buenos Aires from the States. I read that I will be required to show proof of exit to the airline and maybe to customs when entering. Has anyone done this and know what to do? I will not be overstaying my time and will be traveling to other countries during my time in South America. For that reason, I don't want to buy my return ticket - I haven't decided where to fly home from. Any advice is appreciated! Thanks!!!
It is the airline which can deny you boarding if you do not have a return ticket or a ticket out of the country within the time allowed you as a tourist. You can either book a full fare to another country from Argentina and later cancel it or you can phone the airline you are flying with and ask if an international bus ticket will be alright. Then you book a ticket with a bus company and print out your confirmation. You can usually cancel the bus ticket with little or no penalty or change it for another date which actually suits you.