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GCI to OSN: distance & flight time
Guernsey (Guernsey Airport) → Osan (Osan Air Base)
5,713 mi
9,195 km · 4,965 nm
11h 40m
estimated nonstop flight time
+8h
time difference · heading northeast
See live GCI→OSN fares Phone-only fares on this route — call free
Flight time details
5,713 miles nonstop takes roughly 11h 40m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- GCI — Guernsey Airport · Guernsey, Guernsey
- 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 GCI
- JER · Jersey Airport24 mi away
- ACI · Alderney Airport26 mi away
- CER · Cherbourg-Maupertus Airport53 mi away
- GFR · Granville Airport60 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 GCI from OSN?
The flight distance from Guernsey (GCI) to Osan (OSN) is 5,713 miles (9,195 km, 4,965 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GCI to OSN?
A nonstop flight takes about 11h 40m 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 Guernsey and Osan?
Osan is 8 hours ahead of Guernsey.
What is the cheapest way to fly from GCI to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GCI–OSN that never appear on search engines, with no booking fees.