Need help booking?
Unpublished phone-only deals available
OSN to ICN: distance & flight time
Osan (Osan Air Base) → Seoul (Incheon International Airport)
41 mi
66 km · 36 nm
35m
estimated nonstop flight time
Same time
time difference · heading northwest
See live OSN→ICN fares Phone-only fares on this route — call free
Flight time details
41 miles nonstop takes roughly 35m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- ICN — Incheon International Airport · Seoul, 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 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
Near ICN
- GMP · Gimpo International Airport20 mi away
- SWU · Suwon Airport34 mi away
- SSN · Seoul Air Base (K-16)36 mi away
- OSN · Osan Air Base41 mi away
Frequently asked questions
How far is OSN from ICN?
The flight distance from Osan (OSN) to Seoul (ICN) is 41 miles (66 km, 36 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to ICN?
A nonstop flight takes about 35m 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 OSN to ICN?
Nonstop service on OSN–ICN 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 35m nonstop estimate.
What is the cheapest way to fly from OSN to ICN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–ICN that never appear on search engines, with no booking fees.
Why are some OSN to ICN fares phone-only?
Consolidator contracts let us sell certain OSN–ICN 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.