I traveled to South Korea and flew between Seoul Gimpo and Jeju. There are about 155 daily flights, with over 40,000 passengers flying on this route each day which makes it the world's busiest air route.

My flight from Seoul to Jeju is operated by Jin Air B777-200. The staff at Jin Air wears jeans as the uniform. The flight time to Jeju was 50 minutes with the 390-seater B777. Once landed in Jeju, I visited the island and tasted the famous Korean BBQ. I also did some plane-spotting in Jeju.

On the way back from Jeju to Seoul, I have flown on Korean Air new A220. It has all economy seating in 2-3 configuration. Find out more scenes from my video on why Seoul to Jeju is the world's busiest air route by far?