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OSN to GWT: distance & flight time
Osan (Osan Air Base) → Westerland (Westerland Sylt Airport)
5,122 mi
8,243 km · 4,451 nm
10h 31m
estimated nonstop flight time
-8h
time difference · heading northwest
See live OSN→GWT fares Phone-only fares on this route — call free
Flight time details
5,122 miles nonstop takes roughly 10h 31m 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
- GWT — Westerland Sylt Airport · Westerland, 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 GWT
- FLF · Flensburg-Schäferhaus Airport42 mi away
- SKS · Skrydstrup Air Base42 mi away
- EBJ · Esbjerg Airport43 mi away
- PSH · St. Peter-Ording Airport44 mi away
Frequently asked questions
How far is OSN from GWT?
The flight distance from Osan (OSN) to Westerland (GWT) is 5,122 miles (8,243 km, 4,451 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to GWT?
A nonstop flight takes about 10h 31m 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 GWT?
Nonstop service on OSN–GWT 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 31m nonstop estimate.
What is the time difference between Osan and Westerland?
Westerland is 8 hours behind Osan.
What is the cheapest way to fly from OSN to GWT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–GWT that never appear on search engines, with no booking fees.
Why are some OSN to GWT fares phone-only?
Consolidator contracts let us sell certain OSN–GWT 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.