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FCS to OSN: distance & flight time
Fort Carson (Butts AAF (Fort Carson) Air Field) → Osan (Osan Air Base)
6,251 mi
10,061 km · 5,432 nm
12h 43m
estimated nonstop flight time
+15h
time difference · heading northwest
See live FCS→OSN fares Phone-only fares on this route — call free
Flight time details
6,251 miles nonstop takes roughly 12h 43m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- FCS — Butts AAF (Fort Carson) Air Field · Fort Carson, 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 FCS
- COS · City of Colorado Springs Municipal Airport9 mi away
- PUB · Pueblo Memorial Airport30 mi away
- DEN · Denver International Airport82 mi away
- APA · Centennial Airport62 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 FCS from OSN?
The flight distance from Fort Carson (FCS) to Osan (OSN) is 6,251 miles (10,061 km, 5,432 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FCS to OSN?
A nonstop flight takes about 12h 43m 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 Fort Carson and Osan?
Osan is 15 hours ahead of Fort Carson.
What is the cheapest way to fly from FCS to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FCS–OSN that never appear on search engines, with no booking fees.