Osan Air Base
Daylight today(Jul 15, 2026, local time)
About 14h 29m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.
About Osan Air Base
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.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
Live weather
RKSOLive departures & arrivals
Flight data by AeroDataBox. Times are estimates — not for navigation; confirm with the airline.
Where you can fly from here
Current scheduled routes & daily frequency by AeroDataBox. Approximate — confirm bookable schedules with the airline.
Map
Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.
Runways (2)
| Runway | Length | Width | Surface | Lighting | Status |
|---|---|---|---|---|---|
| 09R / 27L | 9,004 ft / 2,744 m | 150 ft | Con | Lighted | Open |
| 09L / 27R | 9,004 ft / 2,744 m | 150 ft | Con | Lighted | Open |
Radio frequencies (8)
| Type | Description | Frequency |
|---|---|---|
| APP | APP | 127.900 MHz |
| ATIS | ATIS | 132.125 MHz |
| CLD | CLNC DEL | 127.300 MHz |
| DEP | DEP | 127.900 MHz |
| GND | GND | 132.450 MHz |
| PMSV | PMSV METRO | 34.650 MHz |
| PTD | PTD | 120.700 MHz |
| TWR | TWR | 122.100 MHz |
Navaids(1)
Nearby airports
Great-circle distance and true bearing from Osan Air Base.
Frequently asked questions
What is the ICAO code for Osan Air Base?
The ICAO code for Osan Air Base is RKSO, and its IATA code is OSN.
Where is Osan Air Base located?
Osan Air Base is medium airport located in Pyeongtaek, South Korea, at an elevation of 38 ft (12 m).
How many runways does Osan Air Base have?
Osan Air Base has 2 runways, the longest being 9,004 ft / 2,744 m.
What time zone is Osan Air Base in?
Osan Air Base is in the Asia/Seoul time zone (UTC+09:00).
What is the magnetic variation at Osan Air Base?
The magnetic variation (declination) at Osan Air Base is approximately 8.9° W, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near Osan Air Base?
The nearest airport to Osan Air Base is Camp Humphreys (A-511) Desiderio Army Airfield (RKSG), about 7.8 nm to the s, followed by Suwon Airport and Leisure Aviation Art Airstrip.
Is the information on this page suitable for flight planning?
No. Osan Air Base data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.