Incheon International Airport was built on land reclaimed between two islands west of Seoul and opened in 2001 to take over the capital's international traffic. It is the hub of Korean Air and Asiana, and only Dubai and Heathrow carry more international passengers. The current schedule feed lists 174 airports in 53 countries connected to Seoul.
It is also famous for what you can do without leaving: traditional Korean craft workshops, indoor gardens, a spa and a golf course are all inside the airport, which is part of why Skytrax has repeatedly ranked it among the best in the world.
Incheon International Airport is the 12th busiest airport in the world — it handled 74,126,912 passengers in 2025, according to ACI World's annual ranking.
The most frequently served routes for Incheon International Airport connect to Tokyo (NRT), Osaka (KIX) and Fukuoka (FUK).
The longest connected route for Incheon International Airport reaches Mexico City (MEX). This non-stop flight covers a distance of 7,516 miles (12,096 km).