By bus
Kushiro Bus operates daily buses one midday bus and one overnight bus to and from Sapporo schedule and pricing on their Japanese-only website.
By train
Sapporo Station to Kushiro Station is a 4 hour train ride. It is the last stop on the Super Oozora Limited Express train. There are 6 trains daily from Sapporo detailed schedule one JR Hokkaido's website.
By plane
Haneda Airport Tokyo to Kushiro Airport is a 90 minute plane ride. Rental cars are available across the street from the airport. If traveling without a local contact, a rental car is strongly recommended because public transportation within the city and greater Kushiro area is few and far between. Akan Bus also operates airport shuttles Japanese-only that correspond with every inbound and outbound flight between the airport and Kushiro Station. One-way adult ticket costs 910 yen.