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Osan Air Base Regional Airport illustrationRegional Airport
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OSNmedium airport

Osan Air Base

Pyeongtaek, South Korea
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RKSO
ICAO
38 ft
Elevation
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Premier U.S. Air Force base on the Korean Peninsula.

Opened
1952
Location
Pyeongtaek, South Korea
Osan Air Base is a United States Air Force installation located near Pyeongtaek, South Korea, approximately 65 kilometers south of Seoul. It serves as the headquarters of the 7th Air Force and the 51st Fighter Wing, making it one of the most strategically significant American military installations in the Pacific region. The base operates primarily as a military facility and is not open to civilian commercial air traffic. It holds the IATA code OSN and ICAO code RKSO, and handles military airlift and fighter operations. The base plays a central role in the defense posture of U.S. and South Korean forces on the peninsula. Osan Air Base is distinct from Osan city; it is geographically situated closer to Pyeongtaek. The installation hosts thousands of U.S. military personnel and their dependents, supporting a broad range of combat and support missions.
Terminals
The base has no commercial passenger terminals; all facilities are military in nature and restricted to authorized personnel.
Getting to & from
Access to the base is restricted to military and authorized personnel, with road connections to Pyeongtaek and Seoul via national highways.
Airlines here
No commercial airlines operate at Osan Air Base; the facility exclusively supports U.S. Air Force and allied military flight operations.
Notable facts
  • ›Headquarters of the 7th Air Force, which commands U.S. air operations on the Korean Peninsula.
  • ›Home to the 51st Fighter Wing, operating F-16 Fighting Falcons and A-10 Thunderbolt IIs.
  • ›The base was established during the Korean War in 1952.
  • ›Osan Air Base is one of the most forward-deployed U.S. air bases in the world.
  • ›It is separate from and not to be confused with Incheon International Airport, South Korea's primary civilian hub.
Wikipedia
This profile is provided for general information only. Details may be inaccurate or outdated — always verify with the airport's official website before acting on them.

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City & Place Guide

Where Korean tradition meets a vibrant international community

Pyeongtaek is a mid-sized city in Gyeonggi Province, about 70 kilometers south of Seoul. It is home to Camp Humphreys, the largest US military base overseas, which gives the city a distinctly cosmopolitan flavor with international restaurants, English-friendly shops, and a lively multicultural atmosphere around the Anjung and Paengseong districts.

Beyond its military presence, Pyeongtaek offers authentic Korean experiences through its historic markets, Buddhist temples, and agricultural countryside. The city is also a key logistics and port hub, with Pyeongtaek Port connecting Korea to China. Travelers often pass through en route to other destinations, but the city rewards those who linger with genuine local culture and affordable prices compared to Seoul.

  • •Pyeongtaek Nongak Performance — vibrant traditional farmers' music and dance shows
  • •Aam Lake Park — scenic lakeside trails ideal for walking and cycling
  • •Pyeongtaek International Jjamppong Festival — annual celebration of the city's beloved noodle dish
  • •Dogo Seowon Confucian Academy — well-preserved historic site reflecting Joseon-era scholarly culture
  • •Majang Lake — peaceful reservoir surrounded by reeds, popular for birdwatching
  • •Pyeongtaek Port — working harbor offering views of industrial maritime activity

Getting around: Pyeongtaek is served by KTX and Mugunghwa trains at Pyeongtaek Station, with the SRT stopping at Sojung Station for fast Seoul connections. Local buses cover most neighborhoods affordably, and taxis are plentiful and inexpensive. Kakao T rideshare works well here, and many drivers near Camp Humphreys are accustomed to English-speaking passengers.

Best time: Spring (April–May) and autumn (September–October) offer the most comfortable temperatures and scenic foliage for exploring the city.

Local food: Try the city's famous jjamppong (spicy seafood noodle soup), fresh seafood from Pyeongtaek Port, and hearty Korean army stew (budae jjigae) popular near the base towns.

This guide is provided for general information only. Verify details locally before making travel decisions.

Passport, Visa & Immigration

Flying internationally via OSN? Check entry, transit and customs requirements for South Korea from official government sources.

South Korea visa & entry information →Embassy & consulate finder →
Osan Air Base
Encyclopaedia

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.

Read full article on Wikipedia