Korean Air Lines Co., Ltd. operating as Korean Air, is both the flag carrier and the largest airline of South Korea, with global headquarters located in Seoul, South Korea. Korean Air's international passenger division and related subsidiary cargo division together serve 131 cities in 46 countries, while its domestic division serves 13 destinations. It is among the top 20 airlines in the world in terms of passengers carried and is also the top-ranked international cargo airline. Incheon International Airport serves as Korean Air's international hub. Korean Air also maintains a satellite headquarters campus at Incheon.

Korean Air, along with Air France, British Airways, Delta Air Lines, Emirates Airlines, Qantas, Qatar Airways, Singapore Airlines, South African Airways, and United Airlines, is one of the few airlines that fly to all inhabited continents.