After the end of World War II, the Fairchilds were supplemented with two Cessna T-50s, and in 1946, the entire fleet was replaced with Beechcraft Model 18s.

[1] To keep the airline flying, Robinson secured investments from a variety of local sources, notably Ithaca Enterprises, a nonprofit organization responsible for bringing new businesses to Ithaca, and the Cooperative Grange League Federation Exchange (now part of Agway), a farmers cooperative that had been organized by members of The Grange, and Cornell University.

Link lent the airline $75,000 to purchase three used Douglas DC-3s— but also removed control of the company from Robinson, making pilot Robert Peach its general manager.

[5] In 1948, the Civil Aeronautics Board certified the airline as a local service carrier, awarding a variety of routes in the Mohawk Valley region.

[5] The following summer it experimented briefly with helicopter service, connecting Newark, New Jersey, and Grossinger's Resort in the Catskill Mountains with a Sikorsky S-55.

[1] When hired by Mohawk Airlines in December 1957, Ruth Carol Taylor became the first African-American flight attendant in the United States.