The flight distance from Bandaranaike International Apt Colombo Airport (CMB) in Colombo, Sri Lanka to Halliburton Field (DUC) in Duncan, United States is 15,378 kilometers (9,556 miles / 8,304 nautical miles). The estimated flight time for this route is approximately 19h, flying north at a heading of 357°.

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 Sri Lanka 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 21:44 in Colombo, it's 10:14 in Duncan. With a 11.5-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 1,084 feet between the two airports. Halliburton Field sits higher than Bandaranaike International Apt Colombo Airport.

The return flight from Duncan (DUC) to Colombo (CMB) follows a heading of 3° (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 Bandaranaike International Apt Colombo Airport (CMB) and Halliburton Field (DUC) detail pages, or use our flight duration calculator to compare other routes.