Route 100E was introduced on July 8, 2017—a few days before the 17th FINA World Championships[3][4]—to supplement the existing 200E service, in operation in some form since 1960. Frequency and operating hours were first extended on 18 May 2018.[5] Since August 2022,[6] 100E operates at all times. In April 2023, BKK added the English-language designation "Airport Express" to the route's destination signs as a pathfinding measure for non-Hungarian speakers.[7]
BKK has always charged a premier fare on this route, although this fare's price has steadily increased over time, from 900 to 1500 HUF in July 2022 and then to 2200 HUF in April 2023.[8][9] These price increases, as well as the route's contactless payment system, standalone on the BKK network, have been criticized.[10][11]
According to BKK's internal data, 83% of the service's users are foreign visitors to Hungary.[12]
Liszt Ferenc Airport 2 (terminus) – Repülőtéri bekötőút – Road 4 – Üllői út – Ferihegyi repülőtérre vezető út – Üllői út – Múzeum körút – Károly körút – Deák Ferenc tér M (terminus)
Deák Ferenc tér M (terminus) – Károly körút – Múzeum körút – Üllői út – Ferihegyi repülőtérre vezető út – Üllői út – Road 4 – Repülőtéri bekötőút – Liszt Ferenc Airport 2 (terminus)
Stops and connections
100E (Liszt Ferenc Airport 2 ◄► Deák Ferenc tér M)