The flight distance from Washington Dulles International Airport (IAD) in Washington, United States to Long Semado Airport (LSM) in Long Semado, Malaysia is 15,035 kilometers (9,342 miles / 8,118 nautical miles). The estimated flight time for this route is approximately 19h, flying north northwest at a heading of 341°.

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 Malaysia. It is an intercontinental flight between North America and Asia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 13:32 in Washington, it's 02:32 in Long Semado. With a 13-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 1,838 feet between the two airports. Long Semado Airport sits higher than Washington Dulles International Airport.

The return flight from Long Semado (LSM) to Washington (IAD) follows a heading of 15° (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 Washington Dulles International Airport (IAD) and Long Semado Airport (LSM) detail pages, or use our flight duration calculator to compare other routes.