|By Tokyo Monorail|
|1 transfer, 30 minutes, 620 yen, frequent connections|
|Take the JR Yamanote or JR Keihin-Tohoku Line from Tokyo Station to Hamamatsucho Station (5 minutes, 150 yen) and transfer to the Tokyo Monorail to Haneda Airport (20 minutes, 470 yen).|
|By Keikyu Railways|
|1 transfer, 35 minutes, 560 yen, frequent connections|
|Take the JR Yamanote or JR Keihin-Tohoku Line from Tokyo Station to Shinagawa Station (10 minutes, 160 yen) and transfer to the Keikyu Airport Line to Haneda Airport (20 minutes, 400 yen).|By limousine bus Direct, 40 minutes, 900 yen, 1-2 connections per hour Limousine buses to Haneda Airport depart Tokyo Station every 30 to 60 minutes. The one way journey takes about 40 minutes and costs 900 yen.
Above fees and schedules are subject to change. For the current Yen exchange rate, click here.
I think the subway is a better choice than the limousine bus - cheaper and faster. ^^