The flight distance from Choibalsan Airport (COQ) in Choibalsan Airport, Mongolia to Denver International Airport (DEN) in Denver, United States is 9,491 kilometers (5,897 miles / 5,124 nautical miles). The estimated flight time for this route is approximately 12h, flying north northeast at a heading of 29°.

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 13:54 in Choibalsan Airport, it's 22:54 in Denver. 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 2,977 feet between the two airports. Denver International Airport sits higher than Choibalsan Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Denver (DEN) to Choibalsan Airport (COQ) follows a heading of 335° (north 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 Choibalsan Airport (COQ) and Denver International Airport (DEN) detail pages, or use our flight duration calculator to compare other routes.