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ICN to OSN: distance & flight time
Seoul (Incheon International Airport) → Osan (Osan Air Base)
41 mi
66 km · 36 nm
35m
estimated nonstop flight time
Same time
time difference · heading southeast
See live ICN→OSN fares Phone-only fares on this route — call free
Flight time details
41 miles nonstop takes roughly 35m gate to gate, flying southeast. 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
- ICN — Incheon International Airport · Seoul, South Korea
- 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 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
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 ICN from OSN?
The flight distance from Seoul (ICN) to Osan (OSN) is 41 miles (66 km, 36 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ICN to OSN?
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.
What is the cheapest way to fly from ICN to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ICN–OSN that never appear on search engines, with no booking fees.