The nearest airport is in Humberto Delgado Airport (LIS), located 10.2 mi (16.4 km) from the city center. If you can't find a flight that works for your travel itinerary, you could book a flight to Cascais (CAT), which is 3.3 mi (5.3 km) away.
If you'd rather travel by train, you can make your way to Paço de Arcos Station.