The flight distance from George Bush Intcntl/Houston Airport (IAH) in Houston, United States to Westport Airport (WSZ) in Westport Airport, New Zealand is 12,404 kilometers (7,708 miles / 6,698 nautical miles). The estimated flight time for this route is approximately 16h, flying southwest at a heading of 233°.

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

Time zone information: When it's 11:40 in Houston, it's 06:40 in Westport Airport. 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 Westport Airport (WSZ) to Houston (IAH) follows a heading of 68° (east northeast). 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 Westport Airport (WSZ) detail pages, or use our flight duration calculator to compare other routes.