The flight distance from Hartsfield - Jackson Atlanta International Airport (ATL) in Atlanta, United States to Don Mueang International Airport (DMK) in Bangkok, Thailand is 14,701 kilometers (9,135 miles / 7,938 nautical miles). The estimated flight time for this route is approximately 18h, flying north at a heading of 353°.

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

Time zone information: When it's 06:03 in Atlanta, it's 18:03 in Bangkok. With a 12-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 1,017 feet between the two airports. Don Mueang International Airport sits lower than Hartsfield - Jackson Atlanta International Airport.

The return flight from Bangkok (DMK) to Atlanta (ATL) follows a heading of 6° (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 Hartsfield - Jackson Atlanta International Airport (ATL) and Don Mueang International Airport (DMK) detail pages, or use our flight duration calculator to compare other routes.