The flight distance from Cascais Airport (CAT) in Cascais Airport, Portugal to Daniel K Inouye International Airport (HNL) in Honolulu, United States is 12,578 kilometers (7,815 miles / 6,791 nautical miles). The estimated flight time for this route is approximately 16h, flying north northwest at a heading of 328°.

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

Time zone information: When it's 05:43 in Cascais Airport, it's 19:43 in Honolulu. 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 Honolulu (HNL) to Cascais Airport (CAT) follows a heading of 26° (north 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 Cascais Airport (CAT) and Daniel K Inouye International Airport (HNL) detail pages, or use our flight duration calculator to compare other routes.