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GCI to DUC: distance & flight time
Guernsey (Guernsey Airport) → Duncan (Halliburton Field)
4,676 mi
7,525 km · 4,063 nm
9h 38m
estimated nonstop flight time
-6h
time difference · heading northwest
See live GCI→DUC fares Phone-only fares on this route — call free
Flight time details
4,676 miles nonstop takes roughly 9h 38m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- GCI — Guernsey Airport · Guernsey, Guernsey
- DUC — Halliburton Field · Duncan, United States
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 DUC
Frequently asked questions
How far is GCI from DUC?
The flight distance from Guernsey (GCI) to Duncan (DUC) is 4,676 miles (7,525 km, 4,063 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GCI to DUC?
A nonstop flight takes about 9h 38m 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 Duncan?
Duncan is 6 hours behind Guernsey.
What is the cheapest way to fly from GCI to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GCI–DUC that never appear on search engines, with no booking fees.