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DUC to GAI: distance & flight time
Duncan (Halliburton Field) → Gaithersburg (Montgomery County Airpark)
1,192 mi
1,918 km · 1,036 nm
3h 3m
estimated nonstop flight time
+1h
time difference · heading east
See live DUC→GAI fares Phone-only fares on this route — call free
Flight time details
1,192 miles nonstop takes roughly 3h 3m 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
- GAI — Montgomery County Airpark · Gaithersburg, 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
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Near DUC
Near GAI
Frequently asked questions
How far is DUC from GAI?
The flight distance from Duncan (DUC) to Gaithersburg (GAI) is 1,192 miles (1,918 km, 1,036 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DUC to GAI?
A nonstop flight takes about 3h 3m 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 Gaithersburg?
Gaithersburg is 1 hour ahead of Duncan.
What is the cheapest way to fly from DUC to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DUC–GAI that never appear on search engines, with no booking fees.