The transport system of Budapest is well developed. You can get around quickly and conveniently by metro, buses will take you to the outskirts, and the tram is ideal for sightseeing.
Budapest has four underground metro lines. Three of them converge at Deák Ferenc tér (only): the little yellow (or Millennium) line designated the M1 that runs from Vörösmarty tér to Mexikói út in Pest; the red M2 line from Déli train station in Buda to Örs vezér tere in Pest; and the blue M3 line from Újpest-Központ to Kőbánya-Kispest in Pest. The new green M4 metro runs from Kelenföldi train station in southern Buda to Keleti train station in Pest, where it links with the M2. It links with the M3 at Kálvin tér. All four metro lines run from 4.30am and begin their last journey at around 11.30pm. The HÉV suburban train line, which runs on five lines (north from Batthyány tér in Buda via Óbuda and Aquincum to Szentendre, south to both Csepel and Ráckeve, and east to Gödöllő), is almost like a fifth, above-ground metro line. Lines are designated H5 to H9.
An extensive system of buses running on some 268 routes day and night serves greater Budapest. On certain bus lines the same bus may have an ‘E’ after the number, meaning it is express and makes limited stops.
Buses run from around 4.30am to between 9pm and 11.50pm, depending on the line. From 11.50pm to 4.30am a network of 40 night buses (always with three digits and beginning with 9) operates every 15 to 60 minutes, again depending on the route.
The following are bus routes (shown with blue lines on most Budapest maps) that you might find useful:
7 Cuts across a large swath of central Pest from XIV Bosnyák tér and down VII Rákóczi út before crossing Elizabeth Bridge to southern Buda. The 7E makes limited stops on the same route.
15 Takes in most of the Inner Town from IX Boráros tér to XIII Lehel tér north of Nyugati train station.
105 Goes from V Deák Ferenc tér to XII Apor Vilmos tér in central Buda.
Trams are often faster and generally more pleasant for sightseeing than buses. There are 32 lines in total.
Some important tram lines (always marked with a red line on a Budapest map):
2 Scenic tram that travels along the Pest side of the Danube from V Jászai Mari tér to IX Boráros tér and beyond.
4 and 6 Extremely useful trams that start at XI Fehérvári út and XI Móricz Zsigmond körtér in south Buda, respectively, and follow the entire length of the Big Ring Rd in Pest before terminating at II Széll Kálmán tér in Buda. Tram 6 runs every 10 to 15 minutes round the clock.
19 Runs from southern Buda along XI Bartók Béla út through the Tabán and along the Danube to I Batthyány tér.
47, 48 and 49 Link V Deák Ferenc tér in Pest with points in southern Buda via the Little Ring Road.
61 Connects XI Móricz Zsigmond körtér with Déli train station and II Széll Kálmán tér in Buda.
Budapest traffic flows are concentrated around the railway stations Keleti, Nyugati Delhi.
In Budapest, most tourists arrive via Liszt Ferenc International Airport, less popular are rail and bus services.
Minibuses, buses and trains to central Budapest run from 4.30am to 11.50pm (700Ft to 2000Ft); taxis cost from 6000Ft.
Keleti, Nyugati and Déli train stations are all connected to metro lines of the same names, and night bus services run from the train stations when the metro services are closed.
Both bus stations are on metro lines (M3 and M2 respectively) and are served by tram 1.