Founded in 1946, Kenmore Air serves the San Juan and Discovery islands, the Olympic Peninsula and British Columbia from its base at Seattle Tacoma International Airport and its seaplane bases Lake Union and Lake Washington. It is also known as Kenmore Air Harbour. It later acquired Otter Air, a small seaplane company which gave it is service to Victoria, BC and Lake Union Air with which it acquired its Lake Union seaplane base. Its fleet consists of the de Havilland Beaver and Twin Otter aircraft along with the Cessna Caravan and 180.