Budapest has an excellent integrated public transport system operated by BKK, including metro (4 lines), trams, buses, trolleybuses, and boats. Single tickets are sold at BKK machines (check the current fare); validate upon boarding. Travel cards offer better value: 24-hour, 72-hour and 7-day versions. The Budapest Card includes unlimited transport plus museum discounts and free walking tours.
Tram 2: Runs along the Pest Danube embankment - considered one of the world's most scenic tram routes with constant Parliament and castle views.
Trams 4 & 6: Circle the Grand Boulevard, connecting major districts and transport hubs.
Tram 19 & 41: Connect Buda side sights including Buda Castle and Gellért Bath.
100E Airport Bus: Direct service to city center (40-50 min), special ticket required (check the current price), The 100E runs around the clock: typically every 6–10 minutes by day and every 30–40 minutes on average at night.
Taxi/Ride-share: Fixed-price taxis at airport (fixed-price taxis; check the fare at the desk), or use Bolt/Uber apps.
Funicular (Sikló): Historic cable railway from Chain Bridge (expensive but fun).
Bus 16: Climbs Castle Hill from multiple stops.
Walking: Steep but scenic paths from Danube embankment.