"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 Shanghai (PVG), China to Seattle (SEA), USA illustrated on a map. Based on 6 recorded flights, the distance can vary between 5980 and 6039 miles.
Japan
Over water
Japan
Over water
You can also check the reverse route: Seattle to Shanghai