The flight distance from Johnson County Airport (BYG) in Buffalo, United States to Kansai International Airport (KIX) in Osaka, Japan is 9,252 kilometers (5,749 miles / 4,996 nautical miles). The estimated flight time for this route is approximately 12h, flying northwest at a heading of 313°.

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 13:34 in Buffalo, it's 05:34 in Osaka. With a 16-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 4,944 feet between the two airports. Kansai International Airport sits lower than Johnson County Airport.

The return flight from Osaka (KIX) to Buffalo (BYG) follows a heading of 39° (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 Johnson County Airport (BYG) and Kansai International Airport (KIX) detail pages, or use our flight duration calculator to compare other routes.