The flight distance from Denver International Airport (DEN) in Denver, United States to Montgomery County Airpark (GAI) in Gaithersburg, United States is 2,351 kilometers (1,461 miles / 1,269 nautical miles). The estimated flight time for this route is approximately 4h, flying east at a heading of 83°.

This is a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

This is a domestic route within United States. Both airports operate in the same country, which may simplify travel requirements and documentation. Despite being a domestic route, there is a 2-hour time difference between the two cities.

Time zone information: When it's 01:54 in Denver, it's 03:54 in Gaithersburg.

There is a significant elevation difference of 4,895 feet between the two airports. Montgomery County Airpark sits lower than Denver International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Gaithersburg (GAI) to Denver (DEN) follows a heading of 281° (west). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Denver International Airport (DEN) and Montgomery County Airpark (GAI) detail pages, or use our flight duration calculator to compare other routes.