"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 Helsinki (HEL), Finland to Seoul (ICN), Republic of Korea illustrated on a map. Based on 24 recorded flights, the distance can vary between 3073 and 6593 miles.
Because of Russian airspace restriction and the geographical location of Helsinki, the flights to Seoul with Finnair has to make a long de-tour around Russian airspace.
You can also check the reverse route: Seoul to Helsinki