From Narita air port  to Tokyo station 

1 hour by Narita Super Express or Keisei Super Express.

(A) From Tokyo Station by JR line

Tokyo station -> Odawara station

90 minutes by JR Toukaido Line or 40 minutes by JR Toukaido-Sinkansen Kodama Super Express.

Odawara Station ----> Minami-Onsen-sou bus stop.

50 minutes by bus.

(B) From Shinjuku of Tokyo, Yokohama or Haneda airport by highway bus

Bus terminal of Shinjuku station, Yokohama station or Haneda airport ----> Toumei highway ---->  Minami-Onsen-sou bus stop.

90 -120 minutes by Odakyu highway bus.

(C) From Shinjuku by Odakyu line

Shinjuku station ----> Hakone-Yumoto Station

90 minutes by Odakyu "Romance Car" Super Express.

Hakone-Yumoto Station ----> Minami Onsen-sou bus stop.

30 minutes by bus.

(D) From Kyoto, Nagoya or Osaka by JR line

Kyoto, Nagoya or Osaka Station  ---> Odawara station 

By JR Sinkansen Kodama Super Express.

Odawara Station ----> Minami-Onsen-sou bus stop.

50 minutes by bus.