More than 70 million people used Korea's 14 airports last year, according to the Korea Airports Corporation, and they were busiest on Fridays.
On all Fridays taken together, 11.7 million travelers used the country's airports. Next busiest were Sundays with 11.6 million and Saturdays with 11.5 million. The most popular departure time was 8 a.m. with 3.07 million travelers, followed by 4 p.m., 9 a.m. and 10 a.m.
The most common overseas destination was Osaka, Japan with 2.08 million travelers, followed by Tokyo, Shanghai and Beijing.