Cheap Bus tickets to Kongsberg

What are the most popular routes to Kongsberg?

Oslo - KongsbergAverage priceCHF 22Average duration1h 22mDaily departures179
Notodden - KongsbergAverage priceCHF 15Average duration33mDaily departures50
Drammen - KongsbergAverage priceCHF 14Average duration41mDaily departures115