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OSN to SJY: distance & flight time
Osan (Osan Air Base) → Seinäjoki / Ilmajoki (Seinäjoki Airport)
4,388 mi
7,062 km · 3,813 nm
9h 4m
estimated nonstop flight time
-6h
time difference · heading northwest
See live OSN→SJY fares Phone-only fares on this route — call free
Flight time details
4,388 miles nonstop takes roughly 9h 4m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- SJY — Seinäjoki Airport · Seinäjoki / Ilmajoki, Finland
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 SJY
- KHJ · Kauhajoki Airport21 mi away
- KAU · Kauhava Airport31 mi away
- VAA · Vaasa Airport42 mi away
- KOK · Kokkola-Pietarsaari Airport72 mi away
Frequently asked questions
How far is OSN from SJY?
The flight distance from Osan (OSN) to Seinäjoki / Ilmajoki (SJY) is 4,388 miles (7,062 km, 3,813 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to SJY?
A nonstop flight takes about 9h 4m 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 Osan and Seinäjoki / Ilmajoki?
Seinäjoki / Ilmajoki is 6 hours behind Osan.
What is the cheapest way to fly from OSN to SJY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–SJY that never appear on search engines, with no booking fees.