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GAI to DCU: distance & flight time
Gaithersburg (Montgomery County Airpark) → Decatur (Pryor Field Regional Airport)
623 mi
1,003 km · 542 nm
1h 49m
estimated nonstop flight time
—
time difference · heading southwest
See live GAI→DCU fares Phone-only fares on this route — call free
Flight time details
623 miles nonstop takes roughly 1h 49m gate to gate, flying southwest. 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
- GAI — Montgomery County Airpark · Gaithersburg, United States
- DCU — Pryor Field Regional Airport · Decatur, 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 GAI
Near DCU
- HSV · Huntsville International Carl T Jones Field10 mi away
- HUA · Redstone Army Air Field15 mi away
- MSL · Northwest Alabama Regional Airport38 mi away
- GAD · Northeast Alabama Regional Airport68 mi away
Frequently asked questions
How far is GAI from DCU?
The flight distance from Gaithersburg (GAI) to Decatur (DCU) is 623 miles (1,003 km, 542 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to DCU?
A nonstop flight takes about 1h 49m 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 GAI to DCU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–DCU that never appear on search engines, with no booking fees.