"See actual flight paths with flightpaths.com"
Weather, politics and local regulations can affect the choice of airspace and flight corridors. Flightpaths.com lets you see the real flight paths and compare passenger airlines and flight times simplified on an interactive map.
Flights from Rome (FCO), Italy to San Francisco (SFO), USA illustrated on a map. Based on 12 recorded flights, the distance can vary between 6422 and 6538 miles.