The flight distance from George Bush Intcntl/Houston Airport (IAH) in Houston, United States to Langtang Airport (LTG) in Langtang, Nepal is 13,545 kilometers (8,416 miles / 7,314 nautical miles). The estimated flight time for this route is approximately 17h, flying north at a heading of 359°.

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 Nepal. 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 08:11 in Houston, it's 19:56 in Langtang. With a 11.75-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 11,904 feet between the two airports. Langtang Airport sits higher than George Bush Intcntl/Houston Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Langtang (LTG) to Houston (IAH) follows a heading of 1° (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 George Bush Intcntl/Houston Airport (IAH) and Langtang Airport (LTG) detail pages, or use our flight duration calculator to compare other routes.