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Cheap flights from Illinois to Jeju City from $1,151

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Jeju City departing on 9/5. 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 am
ORD
-
CJU
24h 30m
1 stop
Cathay Pacific Logo
7:30 am - 1:55 pm
CJU
-
ORD
20h 25m
1 stop
$1,151Cathay Pacific
Sat, Sep 5 - Thu, Sep 17
Multiple Airlines Logo
2:30 pm - 7:45 am
ORD
-
CJU
27h 15m
2 stops
Multiple Airlines Logo
9:00 pm - 10:45 am
CJU
-
ORD
27h 45m
2 stops
$1,612Multiple Airlines
Thu, Aug 20 - Wed, Sep 2
Cathay Pacific Logo
4:00 pm - 6:30 am
ORD
-
CJU
24h 30m
1 stop
Cathay Pacific Logo
7:30 am - 2:20 pm
CJU
-
ORD
20h 50m
1 stop
$1,627Cathay Pacific
Thu, Aug 20 - Wed, Sep 2
Multiple Airlines Logo
12:30 am - 8:00 am
ORD
-
CJU
41h 30m
2 stops
Multiple Airlines Logo
8:45 am - 9:10 pm
CJU
-
ORD
26h 25m
2 stops
$1,662Multiple Airlines
Tue, Aug 4 - Wed, Aug 12
Multiple Airlines Logo
12:30 am - 6:55 pm
ORD
-
CJU
28h 25m
2 stops
Multiple Airlines Logo
10:40 pm - 8:05 pm
CJU
-
ORD
35h 25m
3 stops
$1,698Multiple Airlines
Wed, Aug 19 - Wed, Sep 2
Multiple Airlines Logo
12:30 am - 4:50 pm
ORD
-
CJU
26h 20m
2 stops
Multiple Airlines Logo
10:40 pm - 8:12 pm
CJU
-
ORD
35h 32m
3 stops
$1,755Multiple Airlines
Fri, Sep 4 - Thu, Sep 17
Multiple Airlines Logo
7:16 pm - 9:25 am
ORD
-
CJU
24h 09m
2 stops
Multiple Airlines Logo
10:30 am - 8:45 pm
CJU
-
ORD
24h 15m
1 stop
$1,769Multiple Airlines
Sat, Oct 10 - Sat, Oct 24
Multiple Airlines Logo
12:30 am - 5:30 pm
ORD
-
CJU
27h 00m
1 stop
Multiple Airlines Logo
7:30 am - 8:45 pm
CJU
-
ORD
27h 15m
2 stops
$1,792Multiple Airlines
Fri, Sep 4 - Thu, Sep 17
Multiple Airlines Logo
9:20 pm - 9:05 pm
ORD
-
CJU
57h 45m
2 stops
Multiple Airlines Logo
7:30 am - 2:20 pm
CJU
-
ORD
20h 50m
1 stop
$1,880Multiple Airlines
Thu, Aug 20 - Wed, Sep 2
Multiple Airlines Logo
12:30 am - 6:05 am
ORD
-
CJU
39h 35m
1 stop
Multiple Airlines Logo
7:30 am - 8:45 pm
CJU
-
ORD
27h 15m
2 stops
$1,888Multiple Airlines
Tue, Oct 6 - Sat, Oct 17

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Cathay Pacific flights from Illinois to Jeju City

Our best Cathay Pacific deals on Illinois to Jeju City flight tickets
Cathay Pacific
Sep 5
ORD4:00 pmChicago O'Hare Intl
24h 30m
1 stop
CJU6:30 amJeju City
Sep 17
CJU7:30 amJeju City
20h 25m
1 stop
ORD1:55 pmChicago O'Hare Intl
$1,151
Cathay Pacific
Aug 20
ORD4:00 pmChicago O'Hare Intl
24h 30m
1 stop
CJU6:30 amJeju City
Sep 2
CJU7:30 amJeju City
20h 50m
1 stop
ORD2:20 pmChicago O'Hare Intl
$1,627
Cathay Pacific
Jun 26
ORD4:00 pmChicago O'Hare Intl
24h 30m
1 stop
CJU6:30 amJeju City
Jul 4
CJU7:30 amJeju City
20h 50m
1 stop
ORD2:20 pmChicago O'Hare Intl
$2,224

Air China flights from Illinois to Jeju City

Our best Air China deals on Illinois to Jeju City flight tickets
Air China
Aug 28
ORD8:45 amChicago O'Hare Intl
46h 20m
2 stops
CJU9:05 pmJeju City
Sep 1
CJU3:00 pmJeju City
28h 41m
2 stops
ORD5:41 amChicago O'Hare Intl
$2,240
Air China
Aug 28
ORD8:45 amChicago O'Hare Intl
46h 20m
2 stops
CJU9:05 pmJeju City
Sep 1
CJU3:00 pmJeju City
27h 45m
2 stops
ORD4:45 amChicago O'Hare Intl
$2,484

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 June 24, 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 - CJU

ORDCJU

Chicago O'Hare Intl

Sat 9/5

4:00 pm-6:30 am

1 stop24h 30m

Jeju City

Thu 9/17

7:30 am-1:55 pm

1 stop20h 25m

$1,151

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Thu 8/20

2:30 pm-7:45 am

2 stops27h 15m

Jeju City

Wed 9/2

9:00 pm-10:45 am

2 stops27h 45m

$1,612

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Thu 8/20

4:00 pm-6:30 am

1 stop24h 30m

Jeju City

Wed 9/2

7:30 am-2:20 pm

1 stop20h 50m

$1,627

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Tue 8/4

12:30 am-8:00 am

2 stops41h 30m

Jeju City

Wed 8/12

8:45 am-9:10 pm

2 stops26h 25m

$1,662

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Wed 8/19

12:30 am-6:55 pm

2 stops28h 25m

Jeju City

Wed 9/2

10:40 pm-8:05 pm

3 stops35h 25m

$1,698

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Fri 9/4

12:30 am-4:50 pm

2 stops26h 20m

Jeju City

Thu 9/17

10:40 pm-8:12 pm

3 stops35h 32m

$1,755

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sat 10/10

7:16 pm-9:25 am

2 stops24h 09m

Jeju City

Sat 10/24

10:30 am-8:45 pm

1 stop24h 15m

$1,769

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Fri 9/4

12:30 am-5:30 pm

1 stop27h 00m

Jeju City

Thu 9/17

7:30 am-8:45 pm

2 stops27h 15m

$1,792

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Thu 8/20

9:20 pm-9:05 pm

2 stops57h 45m

Jeju City

Wed 9/2

7:30 am-2:20 pm

1 stop20h 50m

$1,880

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Tue 10/6

12:30 am-6:05 am

1 stop39h 35m

Jeju City

Sat 10/17

7:30 am-8:45 pm

2 stops27h 15m

$1,888

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

24h 09m

Direct flights

None
The fastest flight from Illinois to Jeju City takes 24h 09m
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.

Frequently asked questions about flying from Illinois to Jeju City

  • How do I get Price Alerts for flights from Illinois to Jeju City?

    Price Alerts will notify you by email when the price for flights to Jeju City from Illinois decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Illinois to Jeju City with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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