$1,036+ 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CJU
Feb 26 — Mar 51
1 adult, Economy
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Cheapest flights from Illinois to Jeju-doExplore the most affordable flight options available from Illinois to Jeju-do. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.
Explore the most affordable flight options available from Illinois to Jeju-do. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.
This Trip.com deal was found by Cheapflights users on 1/26. 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.
Tue 2/242:35 pm
ORD
- CJU
1 stop37h 35m
Cathay Pacific
Tue 3/37:55 am
CJU
- ORD
1 stop20h 00m
Cathay Pacific
Deal found 1/26![Cathay Pacific logo]()
$1,036
This Bravofly deal was found by Cheapflights users on 1/26. 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.
Thu 3/123:35 pm
ORD
- CJU
1 stop25h 05m
Cathay Pacific
Thu 3/197:55 am
CJU
- ORD
1 stop20h 00m
Cathay Pacific
Deal found 1/26![Cathay Pacific logo]()
$1,088
This Gurufare deal was found by Cheapflights users on 1/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:35 pm
ORD
- CJU
1 stop37h 35m
Cathay Pacific
Thu 3/58:00 pm
CJU
- ORD
1 stop31h 55m
Cathay Pacific
Deal found 1/27![Cathay Pacific logo]()
$1,184
This Gurufare deal was found by Cheapflights users on 1/26. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/244:00 pm
ORD
- CJU
1 stop24h 20m
Cathay Pacific
Fri 8/77:30 am
CJU
- ORD
1 stop20h 50m
Cathay Pacific
Deal found 1/26![Cathay Pacific logo]()
$1,214
This Gurufare deal was found by Cheapflights users on 1/26. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:15 pm
ORD
- CJU
1 stop24h 05m
Cathay Pacific
Sat 4/187:30 am
CJU
- ORD
1 stop20h 25m
Cathay Pacific
Deal found 1/26![Cathay Pacific logo]()
$1,278
This Gurufare deal was found by Cheapflights users on 1/26. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/232:35 pm
ORD
- CJU
1 stop25h 05m
Cathay Pacific
Mon 3/28:00 pm
CJU
- ORD
1 stop31h 55m
Cathay Pacific
Deal found 1/26![Cathay Pacific logo]()
$1,303
This Mytrip deal was found by Cheapflights users on 1/26. 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.
Mon 4/131:05 am
ORD
- CJU
2 stops22h 55m
Multiple Airlines
Sat 4/187:30 am
CJU
- ORD
3 stops46h 12m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$1,354
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/232:35 pm
ORD
- CJU
1 stop37h 35m
Multiple Airlines
Mon 3/29:10 am
CJU
- ORD
2 stops29h 46m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$1,362
This Mytrip deal was found by Cheapflights users on 1/26. 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.
Wed 3/1112:30 am
ORD
- CJU
2 stops31h 50m
Multiple Airlines
Thu 3/197:30 am
CJU
- ORD
2 stops27h 05m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$1,370
This Mytrip deal was found by Cheapflights users on 1/26. 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 3/124:05 pm
STL
- CJU
3 stops27h 35m
Multiple Airlines
Thu 3/196:55 pm
CJU
- STL
2 stops58h 34m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$3,458
This Booking.com deal was found by Cheapflights users on 1/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:05 pm
STL
- CJU
3 stops38h 20m
Multiple Airlines
Thu 3/511:45 am
CJU
- STL
3 stops26h 14m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$3,599
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 January 27, 2026.
Round-trip from | $1,036 (Trip.com) |
|---|
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 January 27, 2026.
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
Thu 3/12
3:35 pm-6:40 am
1 stop25h 05m
Jeju City
Thu 3/19
7:55 am-1:55 pm
1 stop20h 00m
$1,088
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Thu 2/26
2:35 pm-7:10 pm
1 stop37h 35m
Jeju City
Thu 3/5
8:00 pm-12:55 pm
1 stop31h 55m
$1,184
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Fri 7/24
4:00 pm-6:20 am
1 stop24h 20m
Jeju City
Fri 8/7
7:30 am-2:20 pm
1 stop20h 50m
$1,214
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Mon 4/13
1:05 am-2:00 pm
2 stops22h 55m
Jeju City
Sat 4/18
7:30 am-3:42 pm
3 stops46h 12m
$1,354
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Mon 2/23
2:35 pm-7:10 pm
1 stop37h 35m
Jeju City
Mon 3/2
9:10 am-11:56 pm
2 stops29h 46m
$1,362
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Wed 3/11
12:30 am-10:20 pm
2 stops31h 50m
Jeju City
Thu 3/19
7:30 am-8:35 pm
2 stops27h 05m
$1,370
ChicagoJeju City
ORD - CJU
ORDCJU
Chicago O'Hare Intl
Tue 2/24
2:35 pm-6:40 am
1 stop25h 05m
Jeju City
Tue 3/3
7:55 am-7:35 pm
2 stops26h 40m
$1,390
St. LouisJeju City
STL - CJU
STLCJU
Lambert-St Louis
Thu 3/12
4:05 pm-9:40 am
3 stops27h 35m
Jeju City
Thu 3/19
6:55 pm-3:29 pm
2 stops58h 34m
$3,458
St. LouisJeju City
STL - CJU
STLCJU
Lambert-St Louis
Thu 2/26
4:05 pm-9:25 pm
3 stops38h 20m
Jeju City
Thu 3/5
11:45 am-10:59 pm
3 stops26h 14m
$3,599
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
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