The flight distance from St Louis Lambert International Airport (STL) in St Louis, United States to Ulan-Ude Airport (Mukhino) (UUD) in Ulan Ude, Russia is 9,798 kilometers (6,088 miles / 5,291 nautical miles). The estimated flight time for this route is approximately 13h, flying north at a heading of 349°.

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

Time zone information: When it's 17:33 in St Louis, it's 06:33 in Ulan Ude. With a 13-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 1,073 feet between the two airports. Ulan-Ude Airport (Mukhino) sits higher than St Louis Lambert International Airport.

The return flight from Ulan Ude (UUD) to St Louis (STL) follows a heading of 14° (north 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 St Louis Lambert International Airport (STL) and Ulan-Ude Airport (Mukhino) (UUD) detail pages, or use our flight duration calculator to compare other routes.