The Royal Thai Air Base Nam Phong in Nam Phong District, Khon Kaen Province, Thailand was constructed in 1966-1967 during the Vietnam War by Utah Mining Company, originally to support EC-121 aircraft and potentially three tactical aircraft squadrons, but was ultimately completed as a "bare base" to support disbursal and theater force staging.

A United States Navy Seabee battalion (MCB 5) was soon clearing the jungle and some 10 man tents were hastily erected to sleep and work in.

[3] The squadrons in residence soon included H&MS-15, MABS-15, VMFA-115 and VMFA-232 with F-4 Phantom IIs, VMA(AW)-533 with A-6 Intruders, VMGR-152 with KC-130 Hercules, and H&MS-36, Det "D" with CH-46 Sea Knights.

An on-site visit in January 2019 by several Marine veterans of Task Force Delta report that the base was minimally staffed and the runway surface is in poor condition and would not support non-emergency fixed-wing aircraft use.

In early April 2022, The Bangkok Post reported that due to noise complaints from residents near Udorn Royal Thai Air Force Base, the RTAF had decided to relocate jet training from there to Nam Phong, with the move scheduled to occur in late 2025 after the base facilities had been improved.