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KEV to OSN: distance & flight time
Halli (Halli Airport) → Osan (Osan Air Base)
4,362 mi
7,020 km · 3,790 nm
9h 1m
estimated nonstop flight time
+6h
time difference · heading northeast
See live KEV→OSN fares Phone-only fares on this route — call free
Flight time details
4,362 miles nonstop takes roughly 9h 1m 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
- KEV — Halli Airport · Halli, 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 KEV
- JYV · Jyvaskyla Airport47 mi away
- TMP · Tampere-Pirkkala Airport49 mi away
- QLF · Lahti Vesivehmaa Airport58 mi away
- MIK · Mikkeli Airport80 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 KEV from OSN?
The flight distance from Halli (KEV) to Osan (OSN) is 4,362 miles (7,020 km, 3,790 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KEV to OSN?
A nonstop flight takes about 9h 1m 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 Halli and Osan?
Osan is 6 hours ahead of Halli.
What is the cheapest way to fly from KEV to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KEV–OSN that never appear on search engines, with no booking fees.