The flight distance from Kefallinia Airport (EFL) in Kefallinia Island, Greece to San Francisco International Airport (SFO) in San Francisco, United States is 10,774 kilometers (6,695 miles / 5,818 nautical miles). The estimated flight time for this route is approximately 14h, flying north northwest at a heading of 331°.

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 Greece 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 01:02 in Kefallinia Island, it's 15:02 in San Francisco. 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 San Francisco (SFO) to Kefallinia Island (EFL) 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 Kefallinia Airport (EFL) and San Francisco International Airport (SFO) detail pages, or use our flight duration calculator to compare other routes.