The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Manassas Regional/Harry P Davis Field (MNZ) in Washington, United States is 12,420 kilometers (7,717 miles / 6,706 nautical miles). The estimated flight time for this route is approximately 16h, flying north northwest at a heading of 346°.

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 Nepal 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 05:11 in Kathmandu, it's 19:26 in Washington. With a 9.75-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 4,198 feet between the two airports. Manassas Regional/Harry P Davis Field sits lower than Tribhuvan International Airport.

The return flight from Washington (MNZ) to Kathmandu (KTM) follows a heading of 16° (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 Tribhuvan International Airport (KTM) and Manassas Regional/Harry P Davis Field (MNZ) detail pages, or use our flight duration calculator to compare other routes.