Fly into Buenos Aires (EZE-Ministro Pistarini Intl.), the closest airport, located 11.4 mi (18.3 km) from the city centre. If you can't find a flight that works for your travel itinerary, you could book a flight to Buenos Aires (AEP-Aeroparque Jorge Newbery), which is 8.1 mi (13 km) away.
If you'd rather travel by train, you can make your way to Buenos Aires Liniers Station.