$843+ Cheap flights from Illinois to Jeju-do
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CJU
Jan 14 — Jan 211
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Illinois to Jeju-do with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Jeju-do
Best flights from Illinois to Jeju-doDiscover carefully curated flight deals from Illinois to Jeju-do that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.
Discover carefully curated flight deals from Illinois to Jeju-do that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.
This Bravofly deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/282:35 pmORD - CJU
1 stop25h 05mCathay Pacific
Wed 2/47:55 amCJU - ORD
1 stop20h 00mCathay Pacific
Deal found 12/13![Cathay Pacific logo]()
$843
This LionTravel deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LionTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2811:30 pmORD - CJU
2 stops45h 40mMultiple Airlines
Wed 2/49:20 amCJU - ORD
2 stops49h 15mMultiple Airlines
Deal found 12/13![Multiple Airlines logo]()
$1,190
This Gotogate deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/272:35 pmORD - CJU
1 stop25h 05mCathay Pacific
Tue 2/37:55 amCJU - ORD
1 stop20h 00mCathay Pacific
Deal found 12/13![Cathay Pacific logo]()
$866
This Trip.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/292:35 pmORD - CJU
1 stop25h 05mCathay Pacific
Thu 2/57:55 amCJU - ORD
1 stop20h 00mCathay Pacific
Deal found 12/15![Cathay Pacific logo]()
$965
This Mytrip deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/272:35 pmORD - CJU
1 stop37h 35mMultiple Airlines
Tue 2/37:55 amCJU - ORD
2 stops26h 40mMultiple Airlines
Deal found 12/13![Multiple Airlines logo]()
$1,198
This Cathay Pacific deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/212:35 pmORD - CJU
1 stop37h 00mCathay Pacific
Sun 1/258:00 pmCJU - ORD
1 stop31h 55mCathay Pacific
Deal found 12/12![Cathay Pacific logo]()
$1,027
This Mytrip deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/292:35 pmORD - CJU
1 stop25h 05mMultiple Airlines
Thu 2/57:55 amCJU - ORD
2 stops26h 40mMultiple Airlines
Deal found 12/15![Multiple Airlines logo]()
$1,288
This KAYAK deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/132:35 pmORD - CJU
1 stop25h 05mCathay Pacific
Tue 1/208:00 pmCJU - ORD
1 stop31h 55mCathay Pacific
Deal found 12/14![Cathay Pacific logo]()
$1,407
Find flight deals from Illinois to Jeju-do
Keep the following information in mind while searching for Illinois to Jeju-do flight deals. Data was last updated December 15, 2025.
Round-trip from | $843 (Bravofly) |
|---|
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Jeju-do that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
Use the filters below to find and compare flights from Illinois to Jeju-do that are best for you.
Fly from
Illinois
Fly to
Jeju-do
Route
Depart
Return
Price
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Wed 1/28
2:35 pm-6:40 am
1 stop25h 05m
Jeju City
Wed 2/4
7:55 am-12:55 pm
1 stop20h 00m
$843
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Tue 1/27
2:35 pm-6:40 am
1 stop25h 05m
Jeju City
Tue 2/3
7:55 am-12:55 pm
1 stop20h 00m
$866
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Thu 1/29
2:35 pm-6:40 am
1 stop25h 05m
Jeju City
Thu 2/5
7:55 am-12:55 pm
1 stop20h 00m
$965
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Wed 1/21
2:35 pm-6:35 pm
1 stop37h 00m
Jeju City
Sun 1/25
8:00 pm-12:55 pm
1 stop31h 55m
$1,027
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Wed 1/28
11:30 pm-12:10 pm
2 stops45h 40m
Jeju City
Wed 2/4
9:20 am-7:35 pm
2 stops49h 15m
$1,190
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Tue 1/27
2:35 pm-7:10 pm
1 stop37h 35m
Jeju City
Tue 2/3
7:55 am-7:35 pm
2 stops26h 40m
$1,198
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Thu 1/29
2:35 pm-6:40 am
1 stop25h 05m
Jeju City
Thu 2/5
7:55 am-7:35 pm
2 stops26h 40m
$1,288
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Tue 1/13
2:35 pm-6:40 am
1 stop25h 05m
Jeju City
Tue 1/20
8:00 pm-12:55 pm
1 stop31h 55m
$1,407
Best time to book a flight from Illinois to Jeju-do
Have a flexible travel schedule? Discover the best time to fly to Jeju-do from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Illinois to Jeju-do
No data available for this route at this time. Please check back soon.