The flight distance from Fukui Airport (FKJ) in Fukui Airport, Japan to St Louis Lambert International Airport (STL) in St Louis, United States is 10,413 kilometers (6,471 miles / 5,623 nautical miles). The estimated flight time for this route is approximately 13h, flying northeast at a heading of 35°.

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

Time zone information: When it's 23:19 in Fukui Airport, it's 09:19 in St Louis. With a 14-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 St Louis (STL) to Fukui Airport (FKJ) follows a heading of 324° (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 Fukui Airport (FKJ) and St Louis Lambert International Airport (STL) detail pages, or use our flight duration calculator to compare other routes.