Cheap Korean Air flights Chicago (ORD) to Jeju (CJU)

Finding cheap one-way Korean Air flights from ORD to CJU on Expedia is a breeze --- just filter by "Price (lowest to highest)." Or check out our budget-friendly return fares from $1,976 for your next getaway.**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.

To discover affordable flights from ORD to CJU with Korean Air, begin searching about one month before your planned departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**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.

Browse Korean Air's earliest flights from ORD to CJU by checking the "Morning" and "Early Morning" filters. Not only will you get to where you're going sooner, early departures are also 20% less likely to be canceled.**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 ability to rack up points through Korean Airlines Skypass are the start of the reasons to depart from ORD to CJU with Korean Air. Plus, when you join our One Key™ program, you can earn OneKeyCash™* on top of any airline loyalty program earnings. It's yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.