The flight distance from Washington Dulles International Airport (IAD) in Washington, United States to Yaounde Nsimalen International Airport (NSI) in Yaounde, Cameroon is 9,666 kilometers (6,006 miles / 5,219 nautical miles). The estimated flight time for this route is approximately 12h, flying east at a heading of 88°.

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 United States with Cameroon. It is an intercontinental flight between North America and Africa. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 22:21 in Washington, it's 04:21 in Yaounde. With a 6-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 1,966 feet between the two airports. Yaounde Nsimalen International Airport sits higher than Washington Dulles International Airport.

The return flight from Yaounde (NSI) to Washington (IAD) follows a heading of 309° (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 Washington Dulles International Airport (IAD) and Yaounde Nsimalen International Airport (NSI) detail pages, or use our flight duration calculator to compare other routes.