The flight distance from George Bush Intcntl/Houston Airport (IAH) in Houston, United States to Zahedan International Airport (ZAH) in Zahedan, Iran is 12,941 kilometers (8,041 miles / 6,987 nautical miles). The estimated flight time for this route is approximately 16h, flying north northeast at a heading of 23°.

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 Iran. 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 17:51 in Houston, it's 03:21 in Zahedan. With a 9.5-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 4,468 feet between the two airports. Zahedan International Airport sits higher than George Bush Intcntl/Houston Airport.

The return flight from Zahedan (ZAH) to Houston (IAH) follows a heading of 337° (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 George Bush Intcntl/Houston Airport (IAH) and Zahedan International Airport (ZAH) detail pages, or use our flight duration calculator to compare other routes.