Budapest Metro

Budapest has one of the more entertaining transit mixes in Europe: a tiny 1896 underground, big later metro lines, serious yellow trams, and a special airport bus that behaves like its own little fare system.

The piece I would make sure every visitor rides is M1, the yellow Millennium Underground. It runs just under Andrássy út, so shallow that the stations feel like they were tucked under the pavement rather than dug into the earth. The cars are small, the platforms are small, and the whole thing reads differently from almost any normal metro. Take it from the center toward Hősök tere, City Park, and Széchenyi Thermal Bath. It is transportation, but it is also one of the city's built-environment sights.

How to pay

Budapest has become much easier for one-off metro rides. On the metro, use Pay&GO: tap a bank card or phone wallet at the station entrance and the tap both buys and validates a single ticket. If an inspector checks you, tap the same card or device on their checker.

That does not mean every mode is London-style open-loop yet. For trams, regular buses, and day planning, I would still think in terms of BudapestGO, vending machines, paper tickets, or 24/72-hour travelcards. If you buy paper tickets, validate them. Budapest ticket inspection is real, and an unvalidated ticket is treated like no ticket.

The airport move

The practical airport answer is 100E Airport Express. It runs from Liszt Ferenc Airport to Kálvin tér and Deák Ferenc tér, the central metro interchange where M1, M2, and M3 meet. The important detail is the fare: it uses a special airport shuttle bus ticket, currently 2,500 HUF, not a normal single ticket.

You can buy it in BudapestGO, at machines, or by tapping a bank card on the Pay&GO device on board. If you already have a valid Budapest pass, there is a cheaper add-on ticket, but the normal tourist rule is simpler: buy the 100E ticket as its own thing.

Network character

M1 is the history lesson. M2 and M3 are the practical heavy-metro lines. M4 is the modern architectural layer, especially around Szent Gellért tér and Fővám tér, where the stations feel more like contemporary civic interiors than leftover infrastructure.

The trams matter just as much as the metro. Tram 2 along the Pest bank of the Danube is the scenic one. Trams 4/6 on the Grand Boulevard are the everyday workhorses. If you only look at the metro map, you miss a big part of how Budapest actually moves.