 In May 2011 , SkyWest Airlines began operating six of Alaska Airlines ' West Coast routes . They are operating five CRJ @-@ 700s purchased from Horizon Air under a capacity purchase agreement . This means that SkyWest would own and operate the aircraft , while Alaska Airlines would be responsible for marketing and selling tickets for the flights . The CRJ @-@ 700s are operating on routes that would not be feasible to operate with Horizon 's Bombardier Q400s nor with Alaska 's Boeing 737s . 
