Originally Posted by
stealthmidget
One more thing to consider: I've never transited SCL before - is a visa required for international connections? A cursory search turns up U.S. citizens must pay $100 for a visa, but I'm not sure if this is required if only connecting to another flight.
If the passenger arrived in Argentina by air there is no problem because the reciprocity fee paid there (not strictly a visa) is good for both Argentina and Chile, and for ten years.