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KOP to DUC: distance & flight time
Nakhon Phanom (Nakhon Phanom Airport) → Duncan (Halliburton Field)
8,558 mi
13,773 km · 7,437 nm
17h 15m
estimated nonstop flight time
-12h
time difference · heading north
See live KOP→DUC fares Phone-only fares on this route — call free
Flight time details
8,558 miles nonstop takes roughly 17h 15m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time set-back when reading arrival times on your ticket.
The two airports
- KOP — Nakhon Phanom Airport · Nakhon Phanom, Thailand
- 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 KOP
- SNO · Sakon Nakhon Airport37 mi away
- ZVK · Savannakhet Airport58 mi away
- ROI · Roi Et Airport105 mi away
- VII · Vinh Airport115 mi away
Near DUC
Frequently asked questions
How far is KOP from DUC?
The flight distance from Nakhon Phanom (KOP) to Duncan (DUC) is 8,558 miles (13,773 km, 7,437 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOP to DUC?
A nonstop flight takes about 17h 15m 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 Nakhon Phanom and Duncan?
Duncan is 12 hours behind Nakhon Phanom.
What is the cheapest way to fly from KOP to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOP–DUC that never appear on search engines, with no booking fees.