The nearest airport is Lisbon Aeroporto Humberto Delgado (LIS) and it is the only airport in Lisbon.

Transfer from the Airport to Sintra, the distance is 30 Km (18.6 miles) and it takes 30 minutes by car.

Casa do Valle may arrange a transfer up to 3 people, with baggage included (price: 45 €)

If you prefer an Uber, it may cost around 30€.

It is also possible to take the subway from the airport to the train Station (Oriente) (3 stops) and them a train to Sintra (17 stops) and walk for 15 minutes (up and down) to Casa do Valle. It would take between 1h30 and 2 hours.