Chile - Collected for int'l arrivals flying into SCL ONLY. No other ports of entry currently collect the fee. If you are int'l-int'l transit, you do not pay the fee. If you arrive into the country any other way, you do not pay the fee. If you haven't paid the fee, you do not pay the fee on exit. The fee $ and duration depends on your passport. If you have a US passport, it is good for the remaining life of your passport. If you leave the airport, or "enter Chile" for any reason, even if you have an international transit, you pay. Argentina - UPDATED - Online Prepayment prior to arriving in Argentina required. Effective 7 January 2013, effective for ALL entries into Argentina (previously AEP and EZE air arrivals only). These are not visas, they are fees. If these countries require you to get a visa, this topic is not for you.