Ushuaia Airport (USH)
Ushuaia is the southernmost city in the world, and the access point for almost all trips to Tierra del Fuego, as well as Antarctic Cruises. Flights to/from El Calafate and Buenos Aires (AEP). You can cross from here to Chilean Tierra del Fuego with a boat trip across the Beagle Channel.
Map of Ushuaia Airport (USH)