New Chitose (CTS) Airport is the closest airport to Rusutsu Resort
There are international flights from across South East Asia to New Chitose.
The easiest way of arriving at Rusutsu from Europe would be to fly to Tokyo Haneda or Narita airports. From there it is a 1.5 hour flight to New Chitose. The Tokyo-New Chitose route is one of the busiest domestic routes in the world. There are also domestic flights to New Chitose from Osaka, Hiroshima and Nagoya.