The flight distance from Seattle-Tacoma International Airport (SEA) in Seattle, United States to Sievierodonetsk Airport (SEV) in Sievierodonetsk, Ukraine is 9,144 kilometers (5,682 miles / 4,937 nautical miles). The estimated flight time for this route is approximately 12h, flying north northeast at a heading of 13°.

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

The return flight from Sievierodonetsk (SEV) to Seattle (SEA) follows a heading of 347° (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 Sievierodonetsk Airport (SEV) detail pages, or use our flight duration calculator to compare other routes.