Average daily number of flights at Incheon Airport in South Korea 2019, by day
In September 2019, Incheon International Airport had on average the most flights every day of the week among airports in South Korea. Incheon Airport by itself had approximately as many flights as the other three top airports combined. This is not unusual as Incheon Airport is South Korea's primary, biggest, and busiest international airport, and also replaced Gimpo Airport as the capital area's primary airport upon its completion.