Bombardier Commercial Aircraft said Wednesday that Irish carrier CityJet has exercised an option for four CRJ900 regional jets.
The option was part of a firm order for six CRJ900s announced in January.
With the conversion of the optional order, the 10-airplane deal is valued at $467 million at list prices, Bombardier said.
CityJet will operate the aircraft as a regional carrier for SAS Scandinavian Airlines.
Bombardier is the Montreal-based parent of Learjet and also operates a business jet service center and flight test center at Wichita Eisenhower National Airport.