The flight distance from George Bush Intcntl/Houston Airport (IAH) in Houston, United States to Islamabad International Airport (ISB) in Islamabad, Pakistan is 12,842 kilometers (7,980 miles / 6,934 nautical miles). The estimated flight time for this route is approximately 16h, flying north at a heading of 11°.

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 Pakistan. 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 12:51 in Houston, it's 23:51 in Islamabad. With a 11-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 1,665 feet between the two airports. Islamabad International Airport sits higher than George Bush Intcntl/Houston Airport.

The return flight from Islamabad (ISB) to Houston (IAH) follows a heading of 349° (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 Islamabad International Airport (ISB) detail pages, or use our flight duration calculator to compare other routes.