It connects Keikyu Kamata with Haneda Airport Terminal 1·2 (at Tokyo International Airport) in Tokyo, and has Express (急行), Limited Express (特急, 快特) and Airport Limited Express (エアポート快特) services, virtually all of which continue along the Keikyu Main Line either north to Shinagawa Station in central Tokyo with some trains continuing onto the Toei Asakusa Line, or south to Yokohama Station and onward towards Zushi-Hayama Station.

There is a switchback at Keikyū Kamata for direct train services between Yokohama Station and Haneda Airport.

The train was part of the Keikyu 2100 series' "Keikyu Blue Sky Train" livery and featured images of Sonic, Tails, Knuckles, Amy, Shadow, Silver, Eggman and Carbuncle as well as a collection of the game's expressive stacking blobs.

In addition, signs at the Airport Line's Otorii Station, the closest stop to the site of Sega's original office prior to 2018, were featuring special images honoring the games.

[5] Service levels are expected to be increased following the completion of tail tracks at Haneda Airport Terminal 1·2 Station.