Jeju Island, South Korea in €510s-€560s rtn

Do you know what's the busiest domestic air route in the world? Go on, guess…

Nope, it's not Beijing-Shanghai or Sydney-Melbourne, it's Seoul-Jeju!

Never heard of it? This tiny subtropical island off South Korea's mainland — known as the region's Hawaii — sees nearly 14 million passengers a year, with an average of 225 flights per day.

I mean, with stunning scenery like this, understanding its popularity is a no-brainer :-)