Airport Limousine operates a bus from Tokyo Disney Land to Kasai Station every 15 minutes. Tickets cost $7 - $11 and the journey takes 25 min. Airport Limousine also services this route every 30 minutes.
From Tokyo Disney Land walk to Maihama, train to Nishi-Funabashi, then Metro to Kasai. 39 min ¥473. From Tokyo Disney Land walk to Tokyo Disneyland, bus to Haneda Airport Terminal 2, then bus to Kasai. 1 h 15 min ¥1884. From Tokyo Disney Land taxi to Kasai Station. 6 min ¥3166. From Tokyo Disney Land walk to Kasai Station. 1 h 14 min.