Yes, you can use the Viva Viagem card (now often branded as the Navegante card) for the urban train journey from Lisbon to Sintra. In 2026, the cost for a single adult fare is approximately €2.45, plus a one-time fee of €0.50 for the reusable card itself. You can board the train at major stations like Rossio (central Lisbon) or Oriente (near the airport). A crucial tip for travelers: the Navegante card can only hold one type of fare at a time. For example, if you have unused "Zapping" credit or a Metro fare on your card, you cannot load a "Sintra Train" ticket onto it; you would need a separate, empty card. The journey takes about 40–47 minutes and is considered a commuter route, so trains are frequent. Using the card is a "tap-and-go" process at the station barriers. It is highly recommended to load your card in advance to avoid the notoriously long ticket machine queues at Rossio station, especially during the peak tourist hours between 10:00 AM and 12:00 PM.