Kūkō Line (Fukuoka City Subway)

The Airport Line (空港線) is a subway line, part of the Fukuoka City Subway system in Fukuoka, Japan. It connects Meinohama, Nishi Ward to Fukuokakūkō (Fukuoka Airport), Hakata Ward, all within Fukuoka. The line's color on maps is orange. Officially, the line is called Line 1 (Kūkō Line) (1号線(空港線)). The line has a through service with JR Chikuhi Line. Like other Fukuoka City Subway lines, stations are equipped with automatic platform gates, and trains are automatically operated by ATO system. However, JR train cars (from Chikuhi Line) are operated manually.

This is the only subway line in Japan that directly links to an airport. Although Toei Asakusa Line trains in Tokyo also serve airports (Narita and Haneda), those are not the stations of the Asakusa Line itself. Rather, they are the stations of suburban lines that the Asakusa Line has through services with.

The Airport Line goes through many important areas of the city, namely Nishijin, Tenjin, Hakata, and the airport.

Station list
All stations aer in Fukuoka, Fukuoka Prefecture.

Through services to/from the Hakozaki Line do not continue onto the Chikuhi Line (and vice versa); they terminate at Meinohama Station instead.

Fukuoka Subway

 * 1000 series (since 1981)
 * 2000 series (since 1992)
 * 4000 series (from Autumn 2024, planned)

JR Kyushu

 * 103-1500 series (since 1982)
 * 303 series (since 2000)
 * 305 series (since 2015)

A fleet of six new 305 series 6-car electric multiple unit (EMU) commuter trains was introduced on through services to and from the Chikuhi Line from February 2015.