The flight distance from RAF Ascension Island (ASI) in Ascension Island, SH to Kansai International Airport (KIX) in Osaka, Japan is 15,740 kilometers (9,780 miles / 8,499 nautical miles). The estimated flight time for this route is approximately 20h, flying northeast at a heading of 42°.

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 SH with Japan. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 01:53 in Ascension Island, it's 10:53 in Osaka. 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 Osaka (KIX) to Ascension Island (ASI) follows a heading of 306° (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 RAF Ascension Island (ASI) and Kansai International Airport (KIX) detail pages, or use our flight duration calculator to compare other routes.