The airport was then reassigned to Air Technical Service Command and used as a supply and maintenance depot until being returned to full civil control in October 1945.

Until 1962 GMU (then GRL) was the commercial airport for the Greenville area; in April 1957 it had 13 weekday departures on Eastern, four on Delta and four on Southern.

The airport's history webpage notes that the current terminal was built in 1953 and fully renovated in 1991, "winning a national award".

[1] The Airport Commission recently completed extensive runway, taxiway, and apron improvements, a major terminal renovation, and construction of a new road that made additional land available for development.

[7][8] In the year ending December 31, 2022, the airport had 85,103 aircraft operations, average 233 per day: 81% general aviation, 17% air taxi, and 1% military.

Its total operations in 2017 were topped by only three commercial airports (Myrtle Beach International, Charleston International/Air Force Base and Columbia Metropolitan) in South Carolina.

Of particular note, GMU was the first general aviation airport in the nation to install an Engineered Material Arresting System (EMAS) in the latter part of 2003.

In the summer of 2006, this system was credited with saving five passengers and a $20 million Falcon 900 jet that overran Runway 1 due to a brake malfunction.

This award is presented to a general aviation airport manager in the Southeast who makes outstanding efforts to increase flight safety.