Nearly all international flights arrive at Ezeiza International Airport (EZE), located about 22 miles from the city center. Though public buses serve the airport, they’re notoriously inconvenient; you’re better off paying for a taxi (currently around AR$200 [about US$30] one way) at the official desks inside the arrivals hall. Some shorter flights arrive at Buenos Aires’ smaller, more central airport, Aeroparque Jorge Newbery (AEP).
Public transportation options include the traveler-friendly Subte (subway) and a vast, somewhat overwhelming system of colectivos (buses). At the time of writing, one-way fares were AR$2.50 (US$0.40) and AR$3.50 (US$0.50), respectively, but set prices increase regularly. Purchase Subte tickets in the underground stations before boarding, and if you’re getting on a bus, be prepared with exact change in monedas (coins) to feed into the machine behind the driver. Taxis are abundant and affordably priced; just be aware that many taxistas refuse large bills.