Osan Air Base
Primary Korea hub. Patriot Express to CONUS.
Upcoming flights from Osan AB
See all flights- OSNSEASeattle Tacoma (Sea Tac)
- OSNEDFJB Elmendorf Richardson
- OSNOKOYokota AB Japan
- OSNCHSJB Charleston
- OSNEDFJB Elmendorf Richardson
- OSNOKOYokota AB Japan
- OSNSEASeattle Tacoma (Sea Tac)
- OSNMSJMisawa AB Japan
- OSNSEASeattle Tacoma (Sea Tac)
- OSNOKOYokota AB Japan
Contact Information
About This Terminal
Osan Air Base is an Air Mobility Command (AMC) passenger terminal located in Pyeongtaek, Gyeonggi-do, South Korea. The terminal serves military travelers seeking Space-Available (Space-A) flights on AMC missions. IATA code: OSN.
This terminal operates in the OCONUS — Pacific region. OCONUS Pacific terminals are located throughout the Pacific theater, connecting travelers between the US mainland, Hawaii, Japan, Korea, and the Pacific islands.
Space-A Travel from Osan AB
Space-A travelers at Osan ABfollow the standard AMC signup process. To get on the register, send an email to the terminal with your name, rank, sponsor's SSN (last four), number of passengers, desired destinations, and travel category.
Boarding at Osan AB follows Category (Cat) I through VI priority order. Cat I (Emergency Leave) boards first, followed by Cat II (EML), Cat III (Active Duty on Leave), Cat IV (Unaccompanied Dependents/EML), Cat V (Reserve/Guard/Unaccompanied Dependents), and Cat VI (Retired/100% Disabled Veterans). Check your category with our Eligibility Wizard.
Popular destinations from Osan AB: Yokota AB, Travis AFB, Kadena AB.
Before traveling, verify your documents are in order. Our Document Checklist covers IDs, orders, leave forms, and dependent documentation required at AMC terminals.
Virtual Roll Call (VRC)
Osan AB supports Virtual Roll Call (VRC) — a system that lets registered Space-A travelers call in or check in remotely before a flight, rather than physically appearing at the terminal. This is especially useful for flights departing at unusual hours or for travelers staying off-base.
To use VRC at Osan AB, contact the terminal via phone at +82-31-661-1854 or check their official channels for VRC instructions and roll call times. Always confirm the VRC schedule is active — procedures can change.
Patriot Express at Osan AB
Patriot Express (PE) flights operate from Osan AB on regularly scheduled AMC routes. These contracted commercial charter flights provide consistent Space-A opportunities with higher seat availability than standard AMC missions.
Patriot Express flights typically serve major CONUS-to-OCONUS or OCONUS-to-CONUS routes on predictable weekly schedules. Space-A travelers can be accommodated in available seats after duty passengers and their dependents have been boarded. View current routes on our Schedules page.
Patriot Express routes from Osan AB include connections to: Yokota AB, Travis AFB, Kadena AB.
Popular Destinations from Osan AB
Based on historical AMC mission patterns, Osan AB commonly operates Space-A flights to the following destinations. Actual flight availability changes daily — always check the official AMC 72-hour schedule before planning travel.
Ready to Sign Up at Osan AB?
Create a free account to generate a properly formatted signup email for Osan AB, track your roll calls, and get notified when flights depart from this terminal.
Pro includes the signup email generator, roll call tracker, and flight alerts.