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Cheap flights from Illinois to Jeju City from $539

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Jeju City departing on 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Illinois to Jeju City

Cheap round-trip flights

Enter your travel dates to find the best prices.
Cathay Pacific Logo
4:00 pm - 6:30 amORD  Chicago O'Hare Intl-CJU Jeju City
24h 30m1 stop Hong Kong Intl
Cathay Pacific Logo
7:30 am - 1:55 pmCJU  Jeju City-ORD Chicago O'Hare Intl
20h 25m1 stop Hong Kong Intl
$1,245Cathay Pacific
Thu, Sep 10 - Wed, Sep 16
Multiple Airlines Logo
12:30 am - 10:15 pmORD  Chicago O'Hare Intl-CJU Jeju City
31h 45m2 stops Taipei City Taiwan Taoyuan Intl Busan Gimhae
Multiple Airlines Logo
6:20 pm - 8:45 pmCJU  Jeju City-ORD Chicago O'Hare Intl
64h 25m2 stops Busan Gimhae Taipei City Taiwan Taoyuan Intl
$1,289Multiple Airlines
Tue, Sep 29 - Wed, Oct 7
Multiple Airlines Logo
12:30 am - 5:55 pmORD  Chicago O'Hare Intl-CJU Jeju City
27h 25m2 stops Taipei City Taiwan Taoyuan Intl Busan Gimhae
Multiple Airlines Logo
8:45 am - 8:45 pmCJU  Jeju City-ORD Chicago O'Hare Intl
26h 00m2 stops Busan Gimhae Taipei City Taiwan Taoyuan Intl
$1,320Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
12:30 am - 10:15 pmORD  Chicago O'Hare Intl-CJU Jeju City
31h 45m2 stops Taipei City Taiwan Taoyuan Intl Busan Gimhae
Multiple Airlines Logo
6:20 pm - 8:45 pmCJU  Jeju City-ORD Chicago O'Hare Intl
64h 25m2 stops Busan Gimhae Taipei City Taiwan Taoyuan Intl
$1,321Multiple Airlines
Tue, Sep 29 - Wed, Oct 7
Multiple Airlines Logo
12:30 am - 8:20 pmORD  Chicago O'Hare Intl-CJU Jeju City
29h 50m2 stops Taipei City Taiwan Taoyuan Intl Busan Gimhae
Multiple Airlines Logo
2:50 pm - 8:45 pmCJU  Jeju City-ORD Chicago O'Hare Intl
43h 55m2 stops Busan Gimhae Taipei City Taiwan Taoyuan Intl
$1,333Multiple Airlines
Fri, Sep 25 - Sat, Oct 3
Multiple Airlines Logo
12:30 am - 8:20 pmORD  Chicago O'Hare Intl-CJU Jeju City
29h 50m2 stops Taipei City Taiwan Taoyuan Intl Busan Gimhae
Multiple Airlines Logo
2:50 pm - 8:45 pmCJU  Jeju City-ORD Chicago O'Hare Intl
43h 55m2 stops Busan Gimhae Taipei City Taiwan Taoyuan Intl
$1,334Multiple Airlines
Fri, Sep 25 - Sat, Oct 3
Multiple Airlines Logo
8:10 pm - 5:30 pmORD  Chicago O'Hare Intl-CJU Jeju City
31h 20m2 stops Istanbul Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
12:20 pm - 9:40 amCJU  Jeju City-ORD Chicago O'Hare Intl
35h 20m2 stops Taipei City Taiwan Taoyuan Intl Istanbul
$1,374Multiple Airlines
Wed, Sep 30 - Wed, Oct 7
Multiple Airlines Logo
12:30 am - 8:20 pmORD  Chicago O'Hare Intl-CJU Jeju City
29h 50m2 stops Taipei City Taiwan Taoyuan Intl Busan Gimhae
Multiple Airlines Logo
8:45 am - 8:45 pmCJU  Jeju City-ORD Chicago O'Hare Intl
26h 00m2 stops Busan Gimhae Taipei City Taiwan Taoyuan Intl
$1,416Multiple Airlines
Sat, Sep 26 - Sun, Oct 4
Multiple Airlines Logo
12:30 am - 6:15 pmORD  Chicago O'Hare Intl-CJU Jeju City
27h 45m2 stops Taipei City Taiwan Taoyuan Intl Busan Gimhae
Multiple Airlines Logo
8:45 am - 8:45 pmCJU  Jeju City-ORD Chicago O'Hare Intl
26h 00m2 stops Busan Gimhae Taipei City Taiwan Taoyuan Intl
$1,429Multiple Airlines
Sat, Sep 26 - Sun, Oct 4
Multiple Airlines Logo
12:30 am - 6:50 pmORD  Chicago O'Hare Intl-CJU Jeju City
28h 20m2 stops Taipei City Taiwan Taoyuan Intl Busan Gimhae
Multiple Airlines Logo
8:45 am - 8:45 pmCJU  Jeju City-ORD Chicago O'Hare Intl
26h 00m2 stops Busan Gimhae Taipei City Taiwan Taoyuan Intl
$1,440Multiple Airlines
Sat, Sep 26 - Sun, Oct 4

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momondo 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, momondo users made 832,500 searches. Data last updated August 16, 2026.
Use the filters below to find and compare flights from Illinois to Jeju City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Thu 9/10

4:00 pm-6:30 am

1 stop24h 30m

Jeju City

Wed 9/16

7:30 am-1:55 pm

1 stop20h 25m

$1,245

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Tue 9/29

12:30 am-10:15 pm

2 stops31h 45m

Jeju City

Wed 10/7

6:20 pm-8:45 pm

2 stops64h 25m

$1,289

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Wed 9/9

12:30 am-5:55 pm

2 stops27h 25m

Jeju City

Wed 9/16

8:45 am-8:45 pm

2 stops26h 00m

$1,320

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Tue 9/29

12:30 am-10:15 pm

2 stops31h 45m

Jeju City

Wed 10/7

6:20 pm-8:45 pm

2 stops64h 25m

$1,321

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Fri 9/25

12:30 am-8:20 pm

2 stops29h 50m

Jeju City

Sat 10/3

2:50 pm-8:45 pm

2 stops43h 55m

$1,333

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Fri 9/25

12:30 am-8:20 pm

2 stops29h 50m

Jeju City

Sat 10/3

2:50 pm-8:45 pm

2 stops43h 55m

$1,334

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Wed 9/30

8:10 pm-5:30 pm

2 stops31h 20m

Jeju City

Wed 10/7

12:20 pm-9:40 am

2 stops35h 20m

$1,374

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Sat 9/26

12:30 am-8:20 pm

2 stops29h 50m

Jeju City

Sun 10/4

8:45 am-8:45 pm

2 stops26h 00m

$1,416

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Sat 9/26

12:30 am-6:15 pm

2 stops27h 45m

Jeju City

Sun 10/4

8:45 am-8:45 pm

2 stops26h 00m

$1,429

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Sat 9/26

12:30 am-6:50 pm

2 stops28h 20m

Jeju City

Sun 10/4

8:45 am-8:45 pm

2 stops26h 00m

$1,440

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Illinois to Jeju City

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Illinois to Jeju City?

Cathay Pacific is the most popular carrier operating from Illinois to Jeju City

Cheap Illinois to Jeju City flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Jeju City

Fastest flight time

25h 05m

Direct flights

None
The fastest flight from Illinois to Jeju City takes 25h 05m
There are no direct flights from Illinois to Jeju City. There are no popular flight routes from Illinois to Jeju City.
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Frequently asked questions about flying from Illinois to Jeju City

  • When did momondo last update prices for flights from Illinois to Jeju City Airport?

    Prices for flights from Illinois to Jeju City Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Illinois to Jeju City Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Jeju City Airport.

  • What documentation or ID do you need to fly to Jeju City Airport?

    The travel and health documents you'll need for your trip to Jeju City Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Jeju City Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Jeju City?

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

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Jeju City?

It is quick and easy to find Illinois to Jeju City flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Jeju City that suits you.

Can I find flights from Illinois to Jeju City with flexible booking policies on momondo?

Flights from Illinois to Jeju City with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Illinois to Jeju City?

Once all potential Illinois to Jeju City flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to Jeju City right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois to Jeju City flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cabin classes currently available on flights to Jeju City

List of cabin classes available on flights landing in Jeju City. Availability may vary depending on flight origin and airline.
First Class to Jeju City
Business Class to Jeju City