The flight distance from Khujirt Airport (HJT) in Khujirt Airport, Mongolia to St Louis Lambert International Airport (STL) in St Louis, United States is 10,399 kilometers (6,462 miles / 5,615 nautical miles). The estimated flight time for this route is approximately 13h, flying north at a heading of 10°.

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 Mongolia 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 11:19 in Khujirt Airport, it's 21:19 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.

There is a significant elevation difference of 4,905 feet between the two airports. St Louis Lambert International Airport sits lower than Khujirt Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from St Louis (STL) to Khujirt Airport (HJT) follows a heading of 351° (north). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Khujirt Airport (HJT) and St Louis Lambert International Airport (STL) detail pages, or use our flight duration calculator to compare other routes.