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OSN to HMY: distance & flight time
Osan (Osan Air Base) → Seosan (Seosan Air Base)
40 mi
65 km · 35 nm
34m
estimated nonstop flight time
—
time difference · heading southwest
See live OSN→HMY fares Phone-only fares on this route — call free
Flight time details
40 miles nonstop takes roughly 34m gate to gate, flying southwest. 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
- HMY — Seosan Air Base · Seosan, 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 HMY
- ICN · Incheon International Airport53 mi away
- OSN · Osan Air Base40 mi away
- SWU · Suwon Airport47 mi away
- KUV · Kunsan Air Base56 mi away
Frequently asked questions
How far is OSN from HMY?
The flight distance from Osan (OSN) to Seosan (HMY) is 40 miles (65 km, 35 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to HMY?
A nonstop flight takes about 34m 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 HMY?
Nonstop service on OSN–HMY 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 34m nonstop estimate.
What is the cheapest way to fly from OSN to HMY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–HMY that never appear on search engines, with no booking fees.
Why are some OSN to HMY fares phone-only?
Consolidator contracts let us sell certain OSN–HMY 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.