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GAI to DUC: distance & flight time
Gaithersburg (Montgomery County Airpark) → Duncan (Halliburton Field)
1,192 mi
1,918 km · 1,036 nm
3h 3m
estimated nonstop flight time
-1h
time difference · heading west
See live GAI→DUC fares Phone-only fares on this route — call free
Flight time details
1,192 miles nonstop takes roughly 3h 3m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, 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
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Near GAI
Near DUC
Frequently asked questions
How far is GAI from DUC?
The flight distance from Gaithersburg (GAI) to Duncan (DUC) 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 GAI to DUC?
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 Gaithersburg and Duncan?
Duncan is 1 hour behind Gaithersburg.
What is the cheapest way to fly from GAI to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–DUC that never appear on search engines, with no booking fees.