The flight distance from Chek Lap Kok International Airport (HKG) in Hong Kong, Hong Kong to Greater Portsmouth Regional Airport (PMH) in Portsmouth, United States is 12,995 kilometers (8,075 miles / 7,017 nautical miles). The estimated flight time for this route is approximately 16h, flying north northeast at a heading of 15°.

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

Time zone information: When it's 08:46 in Hong Kong, it's 20:46 in Portsmouth. With a 12-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 Portsmouth (PMH) to Hong Kong (HKG) follows a heading of 343° (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 Chek Lap Kok International Airport (HKG) and Greater Portsmouth Regional Airport (PMH) detail pages, or use our flight duration calculator to compare other routes.