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CWI to OSN: distance & flight time
Clinton (Clinton Municipal Airport) → Osan (Osan Air Base)
6,497 mi
10,455 km · 5,645 nm
13h 12m
estimated nonstop flight time
+14h
time difference · heading northwest
See live CWI→OSN fares Phone-only fares on this route — call free
Flight time details
6,497 miles nonstop takes roughly 13h 12m 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
- CWI — Clinton Municipal Airport · Clinton, 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 CWI
- MLI · Quad City International Airport28 mi away
- DBQ · Dubuque Regional Airport44 mi away
- GBG · Galesburg Municipal Airport62 mi away
- IOW · Iowa City Municipal Airport64 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 CWI from OSN?
The flight distance from Clinton (CWI) to Osan (OSN) is 6,497 miles (10,455 km, 5,645 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CWI to OSN?
A nonstop flight takes about 13h 12m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from CWI to OSN?
Nonstop service on CWI–OSN depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 13h 12m nonstop estimate.
What is the time difference between Clinton and Osan?
Osan is 14 hours ahead of Clinton.
What is the cheapest way to fly from CWI to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CWI–OSN that never appear on search engines, with no booking fees.
Why are some CWI to OSN fares phone-only?
Consolidator contracts let us sell certain CWI–OSN tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.