The flight distance from Chiang Mai International Airport (CNX) in Chiang Mai, Thailand to Denver International Airport (DEN) in Denver, United States is 13,050 kilometers (8,109 miles / 7,047 nautical miles). The estimated flight time for this route is approximately 16h, flying north northeast at a heading of 20°.

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 Thailand 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 15:38 in Chiang Mai, it's 01:38 in Denver. 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 4,398 feet between the two airports. Denver International Airport sits higher than Chiang Mai International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Denver (DEN) to Chiang Mai (CNX) 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 Chiang Mai International Airport (CNX) and Denver International Airport (DEN) detail pages, or use our flight duration calculator to compare other routes.