Buenos Aires rewards a few days minimum. The neighbourhoods are distinct enough that where you stay shapes your experience in a way that matters. Two airports with completely different roles - know which one you are using before you book anything. Safety requires awareness but should not deter you. And the food and culture are genuinely exceptional.
This is a big, complex, occasionally chaotic South American city with world-class restaurants, a tango culture that is still very much alive, and the kind of European-influenced architecture that catches you off guard when you turn a corner. I spent extended time here exploring Recoleta, Palermo, San Telmo, La Boca, and the centre, and came away thinking Buenos Aires deserves more time than most people give it.
Getting there
International flights arrive at Ezeiza (EZE), 45 minutes southwest of the city centre. This is a proper distance - not a quick transfer. Pre-book your transport or use the comparison in my Ezeiza transfer guide. For full routing options from your home country, see the Argentina country guide.
Regional flights (Santiago, Sao Paulo, Montevideo) and all domestic flights use Aeroparque (AEP), just 15 minutes north of the city centre. Much more convenient. See my Aeroparque transfer guide.
If you are connecting between international and domestic flights, you will need to transfer between EZE and AEP. Tienda Leon runs a shuttle between the two airports (about 80 minutes, ~$13 USD). Allow plenty of time.
Getting around
The Subte (metro) covers central areas well and is the fastest way to move between neighbourhoods. Six lines, trains every few minutes during the day. You will need a SUBE card - a rechargeable transit card that works on buses and the metro. Buy one at a kiosk or metro station as soon as you arrive (around ARS $490). You cannot pay cash on buses.
Buses are extensive but the route system takes time to learn. Google Maps handles Buenos Aires bus routing well.
Taxis are cheap but scams happen - rigged meters, counterfeit change, and circuitous routes. Uber and Cabify work well and give you app-based pricing, though they operate in a legal grey area. Drivers may ask you to sit in the front seat to avoid being identified as a rideshare.
Walking is excellent in Recoleta, Palermo, and San Telmo. Buenos Aires is a walkable city if you pick the right neighbourhood as your base.