Fly into San Juan (SJU-Luis Munoz Marin Intl.), the closest airport, located 4.1 mi (6.7 km) from the city centre. If you can't find a flight that's convenient for your trip, you can also fly into Ponce (PSE-Mercedita), which is 42.9 mi (69 km) away.
Walk to nearby metro transport at Universidad Station or Pinero Station to see more of the city.