By Plane -- There is no bus service to town from the Ushuaia Airport, but cab fares are only about $4; always ask for a quote before accepting a ride. Aerolíneas Argentinas/Austral, Roca 116 (tel. 02901/421218; www.aerolineas.com.ar), has two to three daily flights to Buenos Aires, one of which leaves from Ezeiza and stops in El Calafate. Air service frequency increases from November to March, when there's also a daily flight from Río Gallegos and twice-weekly flights from Trelew...