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DEC to DUC: distance & flight time
Decatur (Decatur Airport) → Duncan (Halliburton Field)
622 mi
1,002 km · 541 nm
1h 49m
estimated nonstop flight time
Same time
time difference · heading southwest
See live DEC→DUC fares Phone-only fares on this route — call free
Flight time details
622 miles nonstop takes roughly 1h 49m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- DEC — Decatur Airport · Decatur, United States
- 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 DEC
Near DUC
Frequently asked questions
How far is DEC from DUC?
The flight distance from Decatur (DEC) to Duncan (DUC) is 622 miles (1,002 km, 541 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DEC to DUC?
A nonstop flight takes about 1h 49m 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 cheapest way to fly from DEC to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DEC–DUC that never appear on search engines, with no booking fees.