Need help booking?
Unpublished phone-only deals available
OSN to FLF: distance & flight time
Osan (Osan Air Base) → Flensburg (Flensburg-Schäferhaus Airport)
5,099 mi
8,205 km · 4,431 nm
10h 28m
estimated nonstop flight time
-8h
time difference · heading northwest
See live OSN→FLF fares Phone-only fares on this route — call free
Flight time details
5,099 miles nonstop takes roughly 10h 28m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- FLF — Flensburg-Schäferhaus Airport · Flensburg, Germany
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 FLF
- SGD · Sønderborg Airport21 mi away
- WBG · Schleswig Air Base22 mi away
- SKS · Skrydstrup Air Base31 mi away
- KEL · Kiel-Holtenau Airport41 mi away
Frequently asked questions
How far is OSN from FLF?
The flight distance from Osan (OSN) to Flensburg (FLF) is 5,099 miles (8,205 km, 4,431 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to FLF?
A nonstop flight takes about 10h 28m 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 FLF?
Nonstop service on OSN–FLF 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 10h 28m nonstop estimate.
What is the time difference between Osan and Flensburg?
Flensburg is 8 hours behind Osan.
What is the cheapest way to fly from OSN to FLF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–FLF that never appear on search engines, with no booking fees.
Why are some OSN to FLF fares phone-only?
Consolidator contracts let us sell certain OSN–FLF 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.