How to get to Narita Airport from the Tokyo Big Sight Heliport area as quickly as possible? There's a flight at 9 a.m.

From Odaiba Hotel Nikko to Haneda Airport, in order to catch the 9 a.m. flight, the following is a faster route suggestion:

1. Depart from the Odaiba Hotel Nikko area and take the Togane Subway Line (Tokyo Bayside Line) to Tokyo Station.
   
2. Transfer to the JR Yamanote Line or Keihin Tohoku Line at Tokyo Station and go to Shinagawa Station.
   
3. Transfer to the JR Keikyu Main Line at Shinagawa Station and go to Haneda Airport.
   
4. Choose the express train (limited express or rapid train) that goes directly to Haneda Airport so that you can reach the airport in the shortest time.
   

Please note that since subway and JR train timetables are subject to change, it is recommended that you check the latest timetable before traveling and allow enough time to ensure a smooth arrival at the airport. Also, as there may be peak traffic in the morning, it is recommended that you set off early to ensure you have enough time to deal with possible delays.