The flight distance from Kassala Airport (KSL) in Kassala, Sudan to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 12,711 kilometers (7,898 miles / 6,863 nautical miles). The estimated flight time for this route is approximately 16h, flying north northwest at a heading of 344°.

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

Time zone information: When it's 03:04 in Kassala, it's 17:04 in Seattle. With a 10-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 1,239 feet between the two airports. Seattle-Tacoma International Airport sits lower than Kassala Airport.

The return flight from Seattle (SEA) to Kassala (KSL) follows a heading of 23° (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 Kassala Airport (KSL) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.