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GCC to OSN: distance & flight time
Gillette (Gillette Campbell County Airport) → Osan (Osan Air Base)
5,922 mi
9,530 km · 5,146 nm
12h 5m
estimated nonstop flight time
+15h
time difference · heading northwest
See live GCC→OSN fares Phone-only fares on this route — call free
Flight time details
5,922 miles nonstop takes roughly 12h 5m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- GCC — Gillette Campbell County Airport · Gillette, United States
- 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 GCC
- SHR · Sheridan County Airport77 mi away
- SPF · Black Hills Airport-Clyde Ice Field87 mi away
- CPR · Casper-Natrona County International Airport110 mi away
- RCA · Ellsworth Air Force Base121 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 GCC from OSN?
The flight distance from Gillette (GCC) to Osan (OSN) is 5,922 miles (9,530 km, 5,146 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GCC to OSN?
A nonstop flight takes about 12h 5m 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 Gillette and Osan?
Osan is 15 hours ahead of Gillette.
What is the cheapest way to fly from GCC to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GCC–OSN that never appear on search engines, with no booking fees.