The flight distance from Daniel K Inouye International Airport (HNL) in Honolulu, United States to Francisco de Sa Carneiro Airport (OPO) in Porto, Portugal is 12,368 kilometers (7,685 miles / 6,678 nautical miles). The estimated flight time for this route is approximately 16h, flying north northeast at a heading of 24°.

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

Time zone information: When it's 09:30 in Honolulu, it's 19:30 in Porto. With a 10-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 Porto (OPO) to Honolulu (HNL) follows a heading of 329° (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 Daniel K Inouye International Airport (HNL) and Francisco de Sa Carneiro Airport (OPO) detail pages, or use our flight duration calculator to compare other routes.