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SEP to DUC: distance & flight time
Stephenville (Stephenville Clark Regional Airport) → Duncan (Halliburton Field)
156 mi
252 km · 136 nm
53m
estimated nonstop flight time
Same time
time difference · heading north
See live SEP→DUC fares Phone-only fares on this route — call free
Flight time details
156 miles nonstop takes roughly 53m gate to gate, flying north. 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
- SEP — Stephenville Clark Regional Airport · Stephenville, 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 SEP
- MWL · Mineral Wells Airport40 mi away
- DFW · Dallas Fort Worth International Airport81 mi away
- BKD · Stephens County Airport54 mi away
- FWH · NAS Fort Worth JRB/Carswell Field57 mi away
Near DUC
Frequently asked questions
How far is SEP from DUC?
The flight distance from Stephenville (SEP) to Duncan (DUC) is 156 miles (252 km, 136 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEP to DUC?
A nonstop flight takes about 53m 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 SEP to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEP–DUC that never appear on search engines, with no booking fees.