The flight distance from RAF Ascension Island (ASI) in Ascension Island, SH to Washington Dulles International Airport (IAD) in Washington, United States is 8,322 kilometers (5,171 miles / 4,493 nautical miles). The estimated flight time for this route is approximately 11h, flying northwest at a heading of 314°.

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

This is an international route connecting SH with United States. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 04:31 in Ascension Island, it's 23:31 in Washington. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Washington (IAD) to Ascension Island (ASI) follows a heading of 114° (east southeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the RAF Ascension Island (ASI) and Washington Dulles International Airport (IAD) detail pages, or use our flight duration calculator to compare other routes.