Need help booking?
Unpublished phone-only deals available
DET to GAI: distance & flight time
Detroit (Coleman A. Young Municipal Airport) → Gaithersburg (Montgomery County Airpark)
379 mi
610 km · 329 nm
1h 28m
estimated nonstop flight time
Same time
time difference · heading southeast
See live DET→GAI fares Phone-only fares on this route — call free
Flight time details
379 miles nonstop takes roughly 1h 28m gate to gate, flying southeast. 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
- DET — Coleman A. Young Municipal Airport · Detroit, 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
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 DET
- DTW · Detroit Metropolitan Wayne County Airport22 mi away
- YQG · Windsor Airport10 mi away
- MTC · Selfridge Air National Guard Base Airport17 mi away
- PTK · Oakland County International Airport27 mi away
Near GAI
Frequently asked questions
How far is DET from GAI?
The flight distance from Detroit (DET) to Gaithersburg (GAI) is 379 miles (610 km, 329 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DET to GAI?
A nonstop flight takes about 1h 28m 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 DET to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DET–GAI that never appear on search engines, with no booking fees.