Porto Francisco Sá Carneiro Airport (OPO) handles a good volume of European traffic, with direct connections from most major European cities. The budget carriers have made Porto easily accessible from London, Amsterdam, Paris, and the other main western European hubs. From North America, connections go through Lisbon or via a European hub. The airport is about 11 kilometres northwest of the city centre, and the metro Line E (Violet) connects it to the city centre in about 35 minutes, running directly to Trindade station for connections to all other lines.
By train from Lisbon, the Alfa Pendular service takes about three hours and is comfortable and reasonably priced. The Oriente station in Lisbon connects to the intercity network; trains arrive at Porto's Campanhã station, which is a short hop by local train to São Bento in the historic centre. Booking in advance through CP (Comboios de Portugal) gives the best prices; on-the-day tickets are significantly more expensive.
Buses from Lisbon and other Portuguese cities are generally slower than the train but cheaper; the main bus terminal is Campanhã, adjacent to the train station. Several Spanish cities (Vigo, Santiago de Compostela, Madrid) have direct bus connections. Driving into Porto from either the Spanish border or Lisbon is straightforward on the A1; parking in the historic centre is difficult and expensive, and the metro makes a car unnecessary for most city sightseeing.