The flight distance from Dehradun Airport (DED) in Dehradun, India to Washington Dulles International Airport (IAD) in Washington, United States is 11,930 kilometers (7,413 miles / 6,442 nautical miles). The estimated flight time for this route is approximately 15h, flying north northwest at a heading of 340°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting India with United States. It is an intercontinental flight between Asia and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 17:59 in Dehradun, it's 07:29 in Washington. With a 10.5-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 1,519 feet between the two airports. Washington Dulles International Airport sits lower than Dehradun Airport.

The return flight from Washington (IAD) to Dehradun (DED) follows a heading of 22° (north northeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

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