"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 Frankfurt (FRA), Germany to Seoul (ICN), Republic of Korea illustrated on a map. Based on 60 recorded flights, the distance can vary between 6158 and 6562 miles.
You can also check the reverse route: Seoul to Frankfurt