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DEN to GAI: distance & flight time
Denver (Denver International Airport) → Gaithersburg (Montgomery County Airpark)
1,461 mi
2,352 km · 1,270 nm
3h 39m
estimated nonstop flight time
+2h
time difference · heading east
See live DEN→GAI fares Phone-only fares on this route — call free
Flight time details
1,461 miles nonstop takes roughly 3h 39m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- DEN — Denver International Airport · Denver, 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 DEN
- BFK · Buckley Air Force Base12 mi away
- APA · Centennial Airport22 mi away
- BJC · Rocky Mountain Metropolitan Airport24 mi away
- WBU · Boulder Municipal Airport32 mi away
Near GAI
Frequently asked questions
How far is DEN from GAI?
The flight distance from Denver (DEN) to Gaithersburg (GAI) is 1,461 miles (2,352 km, 1,270 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DEN to GAI?
A nonstop flight takes about 3h 39m 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 Denver and Gaithersburg?
Gaithersburg is 2 hours ahead of Denver.
What is the cheapest way to fly from DEN to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DEN–GAI that never appear on search engines, with no booking fees.