The flight distance from Greymouth Airport (GMN) in Greymouth Airport, New Zealand to George Bush Intcntl/Houston Airport (IAH) in Houston, United States is 12,463 kilometers (7,744 miles / 6,730 nautical miles). The estimated flight time for this route is approximately 16h, flying east northeast at a heading of 69°.

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 New Zealand with United States. It is an intercontinental flight between Oceania and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 21:14 in Greymouth Airport, it's 02:14 in Houston. With a 19-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

The return flight from Houston (IAH) to Greymouth Airport (GMN) follows a heading of 233° (southwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Greymouth Airport (GMN) and George Bush Intcntl/Houston Airport (IAH) detail pages, or use our flight duration calculator to compare other routes.