The aircraft, for the airline's Danish division, is configured with 88 seats and will perform its first flight to the city of Aalborg on 17 December.
"It is very gratifying that we can now offer our customers and employees a new and thoroughly modern aircraft," says Scandinavian Airlines' Danish chief Susanne Larsen.
The carrier says the jets - taken as part of a compensation package following SAS Group's withdrawal of its Q400s last year - are suited to a large number of routes in Europe.
Scandinavian Airlines will introduce about one CRJ900 per month over 2009.
Source: Air Transport Intelligence news