It is the Keihin express bus and is about 40 minutes (Haneda Airport Station -> JR Omori Station). Bus stop "Omori-kaigan Station" Immediately.
Details of a bus on a regular route [Keihin express bus HP]
It escapes from JR Omori Station east gate bus rotary, and turns the Omori-kaigan passage left (on foot 7 minutes).
The near Keikyu Omori-kaigan Station ticket gate right
Time required About 20~30 minutes /, charge Before or after about 3,500 yen
Narita-Airport To JR Ohmori(Tokyo)
Narita-Airport -> Keisei-Ueno/Ueno [Skyliner, 45min]
<Transfer>
Keisei-Ueno/Ueno -> JR Ohmori(Tokyo) [JR Keihintohoku Line Rapid, 20min]
Narita-Airport To JR Ohmori(Tokyo)
Narita-Airport -> Tokyo [Keisei Bus, 60min]
<Transfer>
Tokyo -> JR Ohmori(Tokyo) [JR Keihintohoku Line Rapid, 18min]