The flight distance from Centennial Airport (APA) in Denver, United States to Kansai International Airport (KIX) in Osaka, Japan is 9,733 kilometers (6,048 miles / 5,255 nautical miles). The estimated flight time for this route is approximately 12h, flying northwest at a heading of 314°.

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 Japan. It is an intercontinental flight between North America and Asia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 21:31 in Denver, it's 12:31 in Osaka. With a 15-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 5,859 feet between the two airports. Kansai International Airport sits lower than Centennial Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Osaka (KIX) to Denver (APA) follows a heading of 42° (northeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Centennial Airport (APA) and Kansai International Airport (KIX) detail pages, or use our flight duration calculator to compare other routes.