Purchase a rechargeable Viva Viagem card (€0.50) and load with credit or day passes. Works on metro, trams, buses, funiculars. The Lisboa Card includes unlimited transport plus free/discounted entry to attractions (€21/24hrs, €35/48hrs, €44/72hrs).
Cream or black-green taxis are metered and reasonably priced. Uber and Bolt operate throughout the city and are often cheaper than taxis. Useful for hills and late nights.
Humberto Delgado Airport is 7km from center. Options: Metro Red Line (€1.65, 20 minutes), Aerobus (€4, direct to center), taxi (€15-20, 20-30 minutes), or Uber (€10-15).
Important: Always validate tickets before boarding. Inspectors check frequently with steep fines for invalid tickets.