The flight distance from Great Falls International Airport (GTF) in Great Falls, United States to Washington Dulles International Airport (IAD) in Washington, United States is 2,880 kilometers (1,790 miles / 1,555 nautical miles). The estimated flight time for this route is approximately 4h, flying east at a heading of 97°.

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 03:56 in Great Falls, it's 05:56 in Washington.

There is a significant elevation difference of 3,368 feet between the two airports. Washington Dulles International Airport sits lower than Great Falls International Airport.

The return flight from Washington (IAD) to Great Falls (GTF) follows a heading of 300° (west northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Great Falls International Airport (GTF) and Washington Dulles International Airport (IAD) detail pages, or use our flight duration calculator to compare other routes.