The flight distance from Ronald Reagan Washington Ntl Airport (DCA) in Washington, United States to Sao Tome International Airport (TMS) in Sao Tome, São Tomé and Príncipe is 9,440 kilometers (5,866 miles / 5,097 nautical miles). The estimated flight time for this route is approximately 12h, flying east at a heading of 94°.

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 São Tomé and Príncipe. 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 09:15 in Washington, it's 14:15 in Sao Tome. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Sao Tome (TMS) to Washington (DCA) follows a heading of 309° (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 Ronald Reagan Washington Ntl Airport (DCA) and Sao Tome International Airport (TMS) detail pages, or use our flight duration calculator to compare other routes.