Trains from Lisbon to Sintra are exceptionally frequent, making it one of the easiest day trips in Europe. Services typically depart every 15 to 20 minutes during peak hours and every 30 minutes during early mornings, late evenings, and weekends. There are two main departure points in Lisbon: Rossio Station, which is located in the heart of the historic Baixa district and is the most popular for tourists, and Oriente Station, which is more convenient for those arriving from the airport or the northern suburbs. The journey takes approximately 40 minutes from Rossio and 47 minutes from Oriente. As of 2026, you do not need to book these "urban" train tickets in advance; you simply load a fare onto a reusable Navegante or Viva Viagem card (which costs €0.50) at any station kiosk. A one-way trip costs roughly €2.40. Because the trains function as a commuter service, they run from approximately 6:00 AM until after midnight, providing immense flexibility for visitors to explore Sintra's palaces and return to Lisbon at their leisure without worrying about a strict schedule.