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DUC to IAD: distance & flight time
Duncan (Halliburton Field) → Washington (Washington Dulles International Airport)
1,174 mi
1,890 km · 1,020 nm
3h 1m
estimated nonstop flight time
+1h
time difference · heading east
See live DUC→IAD fares Phone-only fares on this route — call free
Flight time details
1,174 miles nonstop takes roughly 3h 1m gate to gate, flying east. 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
- DUC — Halliburton Field · Duncan, United States
- IAD — Washington Dulles International Airport · Washington, 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 DUC
Frequently asked questions
How far is DUC from IAD?
The flight distance from Duncan (DUC) to Washington (IAD) is 1,174 miles (1,890 km, 1,020 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DUC to IAD?
A nonstop flight takes about 3h 1m 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 Washington?
Washington is 1 hour ahead of Duncan.
What is the cheapest way to fly from DUC to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DUC–IAD that never appear on search engines, with no booking fees.