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HEL to OSN: distance & flight time
Helsinki (Helsinki Vantaa Airport) → Osan (Osan Air Base)
4,409 mi
7,095 km · 3,831 nm
9h 7m
estimated nonstop flight time
+6h
time difference · heading northeast
See live HEL→OSN fares Phone-only fares on this route — call free
Flight time details
4,409 miles nonstop takes roughly 9h 7m 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
- HEL — Helsinki Vantaa Airport · Helsinki, 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 HEL
- HEM · Helsinki Malmi Airport5 mi away
- HYV · Hyvinkää Airfield23 mi away
- QLF · Lahti Vesivehmaa Airport62 mi away
- TLL · Lennart Meri Tallinn Airport63 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 HEL from OSN?
The flight distance from Helsinki (HEL) to Osan (OSN) is 4,409 miles (7,095 km, 3,831 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HEL to OSN?
A nonstop flight takes about 9h 7m 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 Helsinki and Osan?
Osan is 6 hours ahead of Helsinki.
What is the cheapest way to fly from HEL to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HEL–OSN that never appear on search engines, with no booking fees.