Budapest has a great network of buses, trams, trolleybuses, and even 4 metros. Very safe, fast and comfortable way to get around. Download the BUDAPEST GO app to plan your trip and for buying tickets/passes.
A single ticket is valid for 1 bus/tram/trolleybus line as long as you’re onboard. If using the metro you can change lines within 60 mins. These need to be validated BEFORE getting onboard. Buses/trams have a QR code outside the vehicle. At the metro station you find the machines with the QR code before you take the escalator.
30/90 minute tickets are valid for the indicated period with unlimited changes. Automatic validation.
24/72hr passes work the same way as the 30/90min ones for a longer period. Automatic validation.
24hr group ticket is the best for groups/families for 2-5 people. Automatic validation.
Airport transfer ticket: None of the tickets above are valid, this is a separate one for the bus 100E only. Shuttle service from Deák Ferenc tér to the Airport. Validate before you get onboard scanning the QR code by the driver.