The flight distance from Klagenfurt Airport (KLU) in Klagenfurt am Worthersee, Austria to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 8,738 kilometers (5,429 miles / 4,718 nautical miles). The estimated flight time for this route is approximately 11h, flying north northwest at a heading of 332°.

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

This is an international route connecting Austria 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 06:50 in Klagenfurt am Worthersee, it's 21:50 in Seattle. With a 9-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 1,038 feet between the two airports. Seattle-Tacoma International Airport sits lower than Klagenfurt Airport.

The return flight from Seattle (SEA) to Klagenfurt am Worthersee (KLU) follows a heading of 29° (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 Klagenfurt Airport (KLU) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.