This airport went from having pure dirt fields to concrete runways, a control tower for air traffic, and high tech landing gear.
After the war, it was one of five large storage, sales, and scrapping centers for Army Air Forces aircraft established by the Reconstruction Finance Corporation.
An armory for the 149th Aircraft Control and Warning Squadron was constructed and later CA ANG activities had a major impact on the airport.
In 1952, in response to the desire of the Air National Guard to base fighter aircraft there, the city initiated the first of the three runway extensions.
A second runway extension of 1,200 feet was completed in 1956 and permitted the Guard's speedy North American F-86 Sabres to land and take off at Ontario.
In 1982, in preparation for transition to the McDonnell Douglas F-4 Phantom II and return to its earlier designation as the 163d Fighter Group, the 163 TASG transferred to March AFB in nearby Riverside.