HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Jeju City

$693+ Cheap flights from Illinois to Jeju City (CJU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CJU
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Jeju City 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 City

Keep the following information in mind while searching for Illinois to Jeju City flight deals. Data was last updated September 15, 2025.

Round-trip from

$1,038
(Cathay Pacific)

One-way from

$693
(Trip.com)
From Illinois to Jeju City
Search Deals
One-way flight from Illinois to Jeju City
Search Deals

Find flight deals from Illinois to Jeju City

Cheapest flights from Illinois to Jeju City
Explore the most affordable flight options available from Illinois to Jeju City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Gotogate deal was found by Cheapflights users on 9/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/293:40 pmORD - CJU
1 stop25h 00mCathay Pacific
Wed 11/57:55 amCJU - ORD
1 stop20h 05mCathay Pacific
Deal found 9/14$1,114
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2812:30 amORD - CJU
2 stops40h 10mMultiple Airlines
Wed 11/57:55 amCJU - ORD
2 stops26h 40mMultiple Airlines
Deal found 9/14$1,217

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Jeju City 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 September 15, 2025.
Use the filters below to find and compare flights from Illinois to Jeju City that are best for you.

Fly from

Illinois

Fly to

Jeju City

Route

Depart

Return

Price

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Mon 3/9

3:40 pm-6:40 am

1 stop25h 00m

Jeju City

Fri 3/13

7:55 am-2:00 pm

1 stop20h 05m

$1,038

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Wed 10/29

3:40 pm-6:40 am

1 stop25h 00m

Jeju City

Wed 11/5

7:55 am-1:00 pm

1 stop20h 05m

$1,114

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Tue 10/28

12:30 am-6:40 am

2 stops40h 10m

Jeju City

Wed 11/5

7:55 am-7:35 pm

2 stops26h 40m

$1,217

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sat 12/13

11:50 am-7:20 pm

2 stops40h 30m

$693

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sat 12/13

11:15 am-11:20 am

1 stop33h 05m

$1,815

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from Illinois to Jeju City

Have a flexible travel schedule? Discover the best time to fly to Jeju City 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 City
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Jeju City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Jeju City from Illinois?

    Most people fly into Jeju City (CJU) if they book a flight to Jeju City from Illinois. Jeju is conveniently located just 1.7 mi from Jeju City’s city center.

  • How long is the flight from Illinois to Jeju City?

    A quick flight from Illinois to Jeju City can take about 25h. Cathay Pacific provides one of the quickest options available for as low as $1,038. Illinois and Jeju City are separated by a distance of 6778 mi.

  • Can I find deals for flights from Illinois to Jeju City that include hotel bookings?

    Yes. In addition to deals on Illinois to Jeju City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Jeju City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Jeju City.

  • Can I find deals for business class flights from Illinois to Jeju City?

    Yes. Cheapflights offers flight deals from Illinois to Jeju City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Jeju City?

Book flights to Jeju City if you plan to visit one of these locations
Seogwipo

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.