The flight distance from George Bush Intcntl/Houston Airport (IAH) in Houston, United States to Kastamonu Airport (KFS) in Kastamonu, Turkey is 10,523 kilometers (6,539 miles / 5,682 nautical miles). The estimated flight time for this route is approximately 13h, flying northeast at a heading of 36°.

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 Turkey. 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 11:04 in Houston, it's 20:04 in Kastamonu. With a 9-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 3,424 feet between the two airports. Kastamonu Airport sits higher than George Bush Intcntl/Houston Airport.

The return flight from Kastamonu (KFS) to Houston (IAH) follows a heading of 318° (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 George Bush Intcntl/Houston Airport (IAH) and Kastamonu Airport (KFS) detail pages, or use our flight duration calculator to compare other routes.