The flight distance from Washington Dulles International Airport (IAD) in Washington, United States to Ban Huoeisay Airport (OUI) in Ban Huoeisay Airport, Laos is 13,433 kilometers (8,347 miles / 7,253 nautical miles). The estimated flight time for this route is approximately 17h, flying north at a heading of 2°.

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 Laos. 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 10:12 in Washington, it's 22:12 in Ban Huoeisay Airport. With a 12-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 1,068 feet between the two airports. Ban Huoeisay Airport sits higher than Washington Dulles International Airport.

The return flight from Ban Huoeisay Airport (OUI) to Washington (IAD) follows a heading of 358° (north). 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 Ban Huoeisay Airport (OUI) detail pages, or use our flight duration calculator to compare other routes.