Jeju Air flies to over 28 destinations. Most Jeju Air flights are for destinations in Japan but Jeju Air has international flights to several other countries as well, like for example Philippines and South Korea. From its main base in Seoul 5 flights depart every week. Many people who look for Jeju Air tickets look for flights to Bangkok and Clark.
Utiket is a good place to start looking for Jeju Air flights as we can compare all flights by Jeju Air with hundreds of other airlines and dozens of booking websites.