Traveling from Lisbon to Sintra by train is one of the most affordable and efficient day trips in Europe. As of early 2026, a one-way ticket on the CP (Comboios de Portugal) regional train costs €2.30, making a round-trip journey just €4.60. If you do not already have a reusable "Navegante" card, you will need to pay an additional €0.50 for the card itself, which you can then reload for future trips. The trains depart frequently—usually every 20 minutes—from the beautiful Rossio Station in central Lisbon or the Oriente Station. The journey takes approximately 40 minutes. For tourists planning to do extensive travel in a single day, the "Lisboa Card" includes this train journey for free, along with unlimited use of Lisbon’s metro, buses, and trams. Another popular option is the "Train & Bus" daily pass for around €16.00, which covers the train from Lisbon and the local 434 and 435 tourist buses in Sintra that take you up the steep hills to the Pena Palace and the Moorish Castle. These tickets can be bought at automated kiosks or staffed windows at any major Lisbon station.