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KOK to OSN: distance & flight time
Kruunupyy (Kokkola-Pietarsaari Airport) → Osan (Osan Air Base)
4,344 mi
6,991 km · 3,775 nm
8h 59m
estimated nonstop flight time
+6h
time difference · heading northeast
See live KOK→OSN fares Phone-only fares on this route — call free
Flight time details
4,344 miles nonstop takes roughly 8h 59m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- KOK — Kokkola-Pietarsaari Airport · Kruunupyy, Finland
- 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 KOK
- KAU · Kauhava Airport41 mi away
- YLI · Ylivieska Airfield53 mi away
- VAA · Vaasa Airport63 mi away
- SJY · Seinäjoki Airport72 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 KOK from OSN?
The flight distance from Kruunupyy (KOK) to Osan (OSN) is 4,344 miles (6,991 km, 3,775 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOK to OSN?
A nonstop flight takes about 8h 59m 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 Kruunupyy and Osan?
Osan is 6 hours ahead of Kruunupyy.
What is the cheapest way to fly from KOK to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOK–OSN that never appear on search engines, with no booking fees.