The flight distance from Principe Airport (PCP) in Principe Airport, São Tomé and Príncipe to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 12,703 kilometers (7,893 miles / 6,859 nautical miles). The estimated flight time for this route is approximately 16h, flying northwest at a heading of 325°.

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 São Tomé and Príncipe 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 05:43 in Principe Airport, it's 21:43 in Seattle. With a 8-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 Seattle (SEA) to Principe Airport (PCP) follows a heading of 57° (east 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 Principe Airport (PCP) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.