People line up at a check-in counter of Korean Air at Incheon International Airport, Sunday. Yonhap

Korean Air Lines Co., South Korea's national flag carrier, on Sunday resumed the Incheon-Sapporo route after more than two years of suspension, as pent-up travel demand was unleashed amid eased virus curbs.

Korean Air said it will operate two flights a week on the Sapporo route starting from Sunday. The carrier used to offer two flights on a daily basis before the COVID-19 pandemic hit the airline industry.

The company said it will consider expanding the number of flights to Japan depending on developments in COVID-19 infections and entry restrictions in the two countries.

Last month, Korean Air and its smaller local rival Asiana Airlines Inc. resumed the Gimpo-Haneda route after a two-year suspension. (Yonhap)