The flight distance from Sihanoukville International Airport (KOS) in Sihanukville, Cambodia to Sydney Kingsford Smith International Airport (SYD) in Sydney, Australia is 7,049 kilometers (4,380 miles / 3,806 nautical miles). The estimated flight time for this route is approximately 9h, flying southeast at a heading of 137°.

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 Cambodia with Australia. It is an intercontinental flight between Asia and Oceania. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 16:04 in Sihanukville, it's 19:04 in Sydney. The 3-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Sydney (SYD) to Sihanukville (KOS) 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 Sihanoukville International Airport (KOS) and Sydney Kingsford Smith International Airport (SYD) detail pages, or use our flight duration calculator to compare other routes.