"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 Seattle (SEA), USA to Tokyo (HND), Japan illustrated on a map. Based on 12 recorded flights, the distance can vary between 4967 and 5189 miles.
Japan
Over water
Japan
Over water
Japan
Over water
Canada
You can also check the reverse route: Tokyo to Seattle