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COS to OSN: distance & flight time
Colorado Springs (City of Colorado Springs Municipal Airport) → Osan (Osan Air Base)
6,246 mi
10,053 km · 5,428 nm
12h 43m
estimated nonstop flight time
+15h
time difference · heading northwest
See live COS→OSN fares Phone-only fares on this route — call free
Flight time details
6,246 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
- COS — City of Colorado Springs Municipal Airport · Colorado Springs, 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 COS
- FCS · Butts AAF (Fort Carson) Air Field9 mi away
- DEN · Denver International Airport73 mi away
- PUB · Pueblo Memorial Airport37 mi away
- APA · Centennial Airport53 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 COS from OSN?
The flight distance from Colorado Springs (COS) to Osan (OSN) is 6,246 miles (10,053 km, 5,428 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from COS 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 Colorado Springs and Osan?
Osan is 15 hours ahead of Colorado Springs.
What is the cheapest way to fly from COS to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on COS–OSN that never appear on search engines, with no booking fees.