Alaska Airlines today announced that SkyWest Airlines will begin flying six West Coast routes currently operated by Horizon Air, starting May 14. The Utah-based carrier will fly the routes using five 70-seat Bombardier CRJ-700 regional jets it is acquiring from Horizon.

Alaska’s partnership with SkyWest for CRJ-700 flying enables Horizon to fly the Bombardier Q400 turboprop exclusively.

“While it is technically feasible for the Q400 to operate on all routes now served by CRJ-700s, it would result in longer flight times,” said Andrew Harrison, Alaska Air Group’s vice president of planning and revenue management. “For example, it can take up to 35 minutes longer for a Q400 to fly from Seattle to Southern California, which is longer than we’d like. Most of these routes were formerly served with Alaska Air Group jets, and the CRJ-700 jet has proven to be a better fit in these markets.”