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COU to OSN: distance & flight time
Columbia (Columbia Regional Airport) → Osan (Osan Air Base)
6,628 mi
10,667 km · 5,759 nm
13h 28m
estimated nonstop flight time
+14h
time difference · heading northwest
See live COU→OSN fares Phone-only fares on this route — call free
Flight time details
6,628 miles nonstop takes roughly 13h 28m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- COU — Columbia Regional Airport · Columbia, United States
- OSN — Osan Air Base · Osan, South Korea
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near COU
- JEF · Jefferson City Memorial Airport16 mi away
- AIZ · Lee C Fine Memorial Airport53 mi away
- SZL · Whiteman Air Force Base72 mi away
- TBN · Waynesville-St. Robert Regional Forney field75 mi away
Near OSN
- ICN · Incheon International Airport41 mi away
- SWU · Suwon Airport10 mi away
- SSN · Seoul Air Base (K-16)25 mi away
- GMP · Gimpo International Airport35 mi away
Frequently asked questions
How far is COU from OSN?
The flight distance from Columbia (COU) to Osan (OSN) is 6,628 miles (10,667 km, 5,759 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from COU to OSN?
A nonstop flight takes about 13h 28m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Columbia and Osan?
Osan is 14 hours ahead of Columbia.
What is the cheapest way to fly from COU to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on COU–OSN that never appear on search engines, with no booking fees.