Peninsula Airways, operating as PenAir, is an American airline headquartered in Anchorage, Alaska. It is Alaska's second largest commuter airline operating an extensive scheduled passenger and cargo service, as well as charter and medevac services. Its main base is Ted Stevens Anchorage International Airport, with another hub at Boston Logan International Airport in Massachusetts. PenAir currently has a code sharing agreement in place with Alaska Airlines with its flights operated in the state of Alaska as well as all of its flights in the lower 48 states appearing in the Alaska Airlines system timetable.