$219 Cheap Korean Air flights Seoul (ICN) to Jeju (CJU)

Grab budget-friendly return Korean Air flights from ICN to CJU by sorting your results from "Price (lowest to highest)" on Expedia. Or look for bargains from $219 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Search for cheap Korean Air flights from Incheon Intl. Airport (ICN) to Jeju Intl. Airport (CJU) one to three months before your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare type and journey, the ideal day to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Sort your results by "Early Morning" and "Morning" to see the earliest flights from ICN to CJU. Leaving early means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

A 5-star airline rating and the chance to rack up points through Korean Airlines Skypass are the start of the reasons to leave from ICN to CJU with Korean Air. Plus, when you join our One Key™ program, you can earn OneKeyCash™* in addition to Korean Air's loyalty program earnings. It's yours to use wherever your next trip takes you.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.