Osan Air Base

Osan Air Base (RKSO) is a medium airport in Pyeongtaek, South Korea. Pilots and dispatchers reference it by ICAO code RKSO or IATA code OSN. It sits in Asia.

Osan Air Base is a regional airport primarily serving general aviation, charter, and corporate flight departments.

Osan Air Base sits near sea level at 38 ft.

Local operations run on Asia/Seoul. Without scheduled airline traffic, the field tends to be quieter and more flexible for charter and corporate operations — a useful characteristic for early morning, late night, or short-notice flights that would be impractical at a hub.

SkyAccess inventory for RKSO updates continuously as operators publish new empty legs and one-way repositioning trips. Pricing on each leg is available with a free account, and an inventory alert will email you the moment a leg appears on the route you care about.

Use this page to compare RKSO against nearby alternatives, browse live empty-leg pricing in both directions, and brief yourself on the runway and elevation profile before you book.

Osan Air Base is a United States Air Force (USAF) and Republic of Korea Air Force (ROKAF) base located near Songtan station in the city of Pyeongtaek, South Korea, 64 km (40 mi) south of Seoul. Despite its name, Osan AB is not within Osan City, which is 7.5 km (4.7 mi) to the north. The base is the home of the headquarters for Seventh Air Force, Pacific Air Forces' 51st Fighter Wing, and a number of tenant units. The base is also the headquarters of the Republic of Korea Air Force (ROKAF) Operations Command. Osan Air Base is also the departure and arrival point for U.S. government-contracted "Patriot Express" flights bringing service members and their family members to South Korea from Seattle-Tacoma International Airport in the U.S. state of Washington, Misawa Air Base and Yokota Air Base in Japan.