The flight distance from Klagenfurt Airport (KLU) in Klagenfurt am Worthersee, Austria to San Francisco International Airport (SFO) in San Francisco, United States is 9,702 kilometers (6,029 miles / 5,239 nautical miles). The estimated flight time for this route is approximately 12h, flying north northwest at a heading of 327°.

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 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 09:33 in Klagenfurt am Worthersee, it's 00:33 in San Francisco. 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 1,457 feet between the two airports. San Francisco International Airport sits lower than Klagenfurt Airport.

The return flight from San Francisco (SFO) to Klagenfurt am Worthersee (KLU) follows a heading of 28° (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 San Francisco International Airport (SFO) detail pages, or use our flight duration calculator to compare other routes.