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DUC to KEF: distance & flight time
Duncan (Halliburton Field) → Keflavik (Keflavik International Airport)
3,671 mi
5,907 km · 3,190 nm
7h 40m
estimated nonstop flight time
+5h
time difference · heading northeast
See live DUC→KEF fares Phone-only fares on this route — call free
Flight time details
3,671 miles nonstop takes roughly 7h 40m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time gain when reading arrival times on your ticket.
The two airports
- DUC — Halliburton Field · Duncan, United States
- KEF — Keflavik International Airport · Keflavik, Iceland
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 DUC
Near KEF
- RKV · Reykjavik Airport22 mi away
- GUU · Grundarfjörður Airport72 mi away
- VEY · Vestmannaeyjar Airport81 mi away
- PFJ · Patreksfjörður Airport116 mi away
Frequently asked questions
How far is DUC from KEF?
The flight distance from Duncan (DUC) to Keflavik (KEF) is 3,671 miles (5,907 km, 3,190 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DUC to KEF?
A nonstop flight takes about 7h 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 Duncan and Keflavik?
Keflavik is 5 hours ahead of Duncan.
What is the cheapest way to fly from DUC to KEF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DUC–KEF that never appear on search engines, with no booking fees.