Concordia Bus was founded in 1997,[1] and at first a subsidiary of Schøyens Bilcentraler.

In Akershus the company operates in Nesodden, Ski and Vestby for Stor-Oslo Lokaltrafikk.

For Hedmark Trafikk the company operates school buses.

With Opplandstrafikk Schøyen has contracts for operating the city buses in Gjøvik and Lillehammer and the regional routes on the line Hønefoss – Gjøvik – Lillehammer.

For Vestviken Kollektivtrafikk in Vestfold Schøyen has contracts for routes in the cities Horten, Larvik and Sandefjord while the company has contracts with Østfold Kollektivtrafikk for routes in Moss and Halden.