The $2 airport bus in Lisbon that nobody at my hostel knew about
Last month I flew into Lisbon and almost paid 25 euros for a taxi to my hostel in Alfama. A guy at the coffee stand in the terminal told me to take the 744 bus instead. It cost me 1.80 euros and dropped me two blocks from my door in about 35 minutes. I asked 6 people at the hostel later and none of them knew this bus existed. What cheap airport rides have you found that tourists always miss?