The flight distance from RAF Ascension Island (ASI) in Ascension Island, SH to Sydney Kingsford Smith International Airport (SYD) in Sydney, Australia is 15,112 kilometers (9,390 miles / 8,160 nautical miles). The estimated flight time for this route is approximately 19h, flying south southeast at a heading of 163°.

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 Australia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 08:35 in Ascension Island, it's 19:35 in Sydney. With a 11-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 Sydney (SYD) to Ascension Island (ASI) follows a heading of 201° (south southwest). 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 Sydney Kingsford Smith International Airport (SYD) detail pages, or use our flight duration calculator to compare other routes.