Air Cortez was a United States FAR 121 and 135 commuter airline that operated from 1977 to 1986.
In 1981, Air Cortez was operating nonstop passenger service between Ontario Airport (ONT) and Yuma, Arizona (YUM) with a Beech 18 prop aircraft.
[1] In 1985, the airline was operating scheduled passenger service between Las Vegas (LAS) and Grand Canyon National Park Airport (GCN) with Fairchild F-27 turboprop and Cessna 402 prop aircraft.
[2] Air Cortez also operated scheduled international passenger service to Mexico with the Fairchild F-27 on a routing of Ontario-San Diego-Guaymas-Mulege-Loreto.
Its cargo and passenger operations were based at Ontario Airport, and included scheduled and demand passenger and cargo service to most of the contiguous states, Jamaica, Panama, Mexico, Guatemala, Grand Bahama, Cuba, Honduras, Belize and the Channel Islands.