The cheapest way to the airport. Nothing listed is quicker.
Metro line E
E · Metro do Porto, Andante tariffPickup, hours & luggage
Boards at. Trindade station, on the line E platforms towards Aeroporto
What one person pays arriving with nothing: a Z4 single at EUR 2.30 plus the EUR 0.60 Andante Azul card it must be loaded on, one card per person, both sold by the machines in the station. The card is reusable for a year, so a second ride is EUR 2.30; ten loaded at once earn an eleventh free. A Z4 is valid 1h15 from first validation across the metro, STCP buses and suburban trains. Children under four travel free; there is no child single. A 24-hour Z4 is EUR 8.55, but the tourist Andante Tour 1 at EUR 7.75 covers the whole network for 24 hours and beats it.
Luggage. Level boarding, no stated limit. Bicycles by the rear door.
Hours. Monday to Friday; first train is 06:22 on Saturdays, Sundays and holidays. The last train every day leaves Trindade at 00:37 and reaches the airport at 01:04.