The subway lines that go to the airport, compared by how hard they are to type
Seoul's airport railroad takes 155 keys. New York's A train takes 619. Here are the airport lines in the game and how they stack up.
October 5, 2026 · 2 min read
Not every city sends a subway line to its airport. We looked for lines in HelloSubway that stop at an airport station, and counted the keys needed to type each line once. Where the station is on a branch that the game draws but does not make you type, we say so.
Seoul: three lines, one that is all airport
The Airport Railroad Express runs from Seoul Station to Incheon Airport Terminal 2. It has 14 stations and needs 155 keys, which is level 2, one of the lightest lines in Seoul. Gimpo International Airport is also served by Line 5 and Line 9, at 384 and 330 keys. Of the three, the airport railroad is also the lightest to type.
New York: the A, E and J
JFK is not on the subway itself. The AirTrain connects at Howard Beach-JFK Airport on the A train and at Sutphin Boulevard-Archer Avenue-JFK Airport on the E and J. Both of those stations are in the game. The A has 36 stations and needs 619 keys, level 6 in New York. The E is 20 stations and 426 keys, and the J is 30 stations and 492.
London and Paris
The Piccadilly line reaches Heathrow Terminals 2 & 3 and Terminal 5. It has 38 stations and 490 keys, level 5. Terminal 4 is on a short branch that the map draws but the game does not ask you to type. In Paris, Line 14 ends at Aéroport d'Orly. It has 21 stations and 303 keys, level 3. If you ride it for real, note that the ordinary Métro ticket does not cover the Orly station; you need the airport ticket described in how you pay for the subway. Paris's other big airport, Charles de Gaulle, is served by the RER B, which is not in the game.
Tokyo and Singapore
Tokyo's two airports are served by other railway companies, so none of the Tokyo lines in the game reaches one. In Singapore, Changi Airport is on a short branch of the East West Line that is drawn on the map but not typed. The line itself has 33 stations and needs 302 keys.
Which to try
For a quick one, take the Airport Railroad Express: 14 stations and 155 keys, a minute or two for a steady typist. For a real test, try the A train. If you plan to ride one of these lines, each city guide now has a section on getting from the airport to the city.
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