The flight distance from Seattle-Tacoma International Airport (SEA) in Seattle, United States to Sidi Ifni Xx Airport (SII) in Sidi Ifni, Morocco is 9,117 kilometers (5,665 miles / 4,923 nautical miles). The estimated flight time for this route is approximately 12h, flying northeast at a heading of 55°.

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 Morocco. 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 01:08 in Seattle, it's 10:08 in Sidi Ifni. With a 9-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

The return flight from Sidi Ifni (SII) to Seattle (SEA) follows a heading of 321° (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 Seattle-Tacoma International Airport (SEA) and Sidi Ifni Xx Airport (SII) detail pages, or use our flight duration calculator to compare other routes.