The country declared a seven day national mourning period effective from Sunday, with memorial altars to be set up nationwide.
It is the first fatal accident in the history of Jeju Air, one of South Korea's largest low-cost carriers, which was set up in 2005.
On August 12, 2007, a Bombardier Q400 operated by Jeju Air carrying 74 passengers came off the runway due to strong winds at the southern Busan-Gimhae airport, resulting in a dozen injuries.
South Korea's aviation industry has a solid track record for safety, experts say.