The flight distance from George Bush Intcntl/Houston Airport (IAH) in Houston, United States to Kastoria National Airport (KSO) in Kastoria, Greece is 9,824 kilometers (6,104 miles / 5,304 nautical miles). The estimated flight time for this route is approximately 13h, flying northeast at a heading of 43°.

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

Time zone information: When it's 04:33 in Houston, it's 12:33 in Kastoria. With a 8-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 2,071 feet between the two airports. Kastoria National Airport sits higher than George Bush Intcntl/Houston Airport.

The return flight from Kastoria (KSO) to Houston (IAH) follows a heading of 309° (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 Kastoria National Airport (KSO) detail pages, or use our flight duration calculator to compare other routes.