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STK to DUC: distance & flight time
Sterling (Sterling Municipal Airport) → Duncan (Halliburton Field)
514 mi
828 km · 447 nm
1h 35m
estimated nonstop flight time
+1h
time difference · heading southeast
See live STK→DUC fares Phone-only fares on this route — call free
Flight time details
514 miles nonstop takes roughly 1h 35m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- STK — Sterling Municipal Airport · Sterling, 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 STK
- AKO · Colorado Plains Regional Airport30 mi away
- SNY · Sidney Municipal-Lloyd W Carr Field37 mi away
- DEN · Denver International Airport91 mi away
- GXY · Greeley–Weld County Airport73 mi away
Near DUC
Frequently asked questions
How far is STK from DUC?
The flight distance from Sterling (STK) to Duncan (DUC) is 514 miles (828 km, 447 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STK to DUC?
A nonstop flight takes about 1h 35m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from STK to DUC?
Nonstop service on STK–DUC depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 35m nonstop estimate.
What is the time difference between Sterling and Duncan?
Duncan is 1 hour ahead of Sterling.
What is the cheapest way to fly from STK to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STK–DUC that never appear on search engines, with no booking fees.
Why are some STK to DUC fares phone-only?
Consolidator contracts let us sell certain STK–DUC tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.