The flight distance from Seattle-Tacoma International Airport (SEA) in Seattle, United States to Dionysios Solomos Airport (ZTH) in Zakynthos Island, Greece is 9,861 kilometers (6,128 miles / 5,325 nautical miles). The estimated flight time for this route is approximately 13h, flying north northeast at a heading of 28°.

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 Greece. 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 16:03 in Seattle, it's 02:03 in Zakynthos Island. 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 Zakynthos Island (ZTH) to Seattle (SEA) follows a heading of 336° (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 Seattle-Tacoma International Airport (SEA) and Dionysios Solomos Airport (ZTH) detail pages, or use our flight duration calculator to compare other routes.