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Cheap flights from Illinois to Jeju-do from $1,947

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-do departing on 6/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to Jeju-do

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 - 2:20 pm
CJU
-
ORD
20h 50m
1 stop
$1,947Cathay Pacific
Mon, Jun 29 - Mon, Jul 6
Multiple Airlines Logo
9:55 am - 7:45 am
ORD
-
CJU
31h 50m
2 stops
Multiple Airlines Logo
3:55 pm - 1:22 pm
CJU
-
ORD
35h 27m
3 stops
$2,012Multiple Airlines
Fri, Jun 12 - Fri, Jun 19
Multiple Airlines Logo
5:30 pm - 7:15 am
ORD
-
CJU
47h 45m
2 stops
Multiple Airlines Logo
7:30 am - 2:20 pm
CJU
-
ORD
20h 50m
1 stop
$2,065Multiple Airlines
Fri, Jun 12 - Fri, Jun 19
Multiple Airlines Logo
8:20 pm - 7:30 am
ORD
-
CJU
45h 10m
2 stops
Multiple Airlines Logo
7:30 am - 9:00 pm
CJU
-
ORD
27h 30m
2 stops
$2,105Multiple Airlines
Fri, Jun 12 - Fri, Jun 19
Cathay Pacific Logo
4:15 pm - 6:30 am
ORD
-
CJU
24h 15m
1 stop
Cathay Pacific Logo
7:30 am - 2:20 pm
CJU
-
ORD
20h 50m
1 stop
$2,120Cathay Pacific
Fri, Jun 12 - Fri, Jun 19
Multiple Airlines Logo
2:15 pm - 9:35 am
ORD
-
CJU
29h 20m
3 stops
Multiple Airlines Logo
3:55 pm - 1:22 pm
CJU
-
ORD
35h 27m
3 stops
$2,178Multiple Airlines
Fri, Jun 12 - Fri, Jun 19
Multiple Airlines Logo
12:30 am - 9:35 am
ORD
-
CJU
19h 05m
1 stop
Multiple Airlines Logo
7:30 am - 9:10 pm
CJU
-
ORD
27h 40m
2 stops
$2,194Multiple Airlines
Sun, Jun 28 - Mon, Jul 6
Multiple Airlines Logo
8:10 pm - 6:05 am
ORD
-
CJU
43h 55m
2 stops
Multiple Airlines Logo
7:30 am - 2:20 pm
CJU
-
ORD
20h 50m
1 stop
$2,254Multiple Airlines
Sun, Jun 28 - Sun, Jul 5
Multiple Airlines Logo
12:30 am - 9:35 am
ORD
-
CJU
19h 05m
1 stop
Multiple Airlines Logo
8:45 am - 9:10 pm
CJU
-
ORD
26h 25m
3 stops
$2,279Multiple Airlines
Sun, Jun 28 - Mon, Jul 6
Multiple Airlines Logo
8:50 am - 8:35 am
ORD
-
CJU
33h 45m
3 stops
Multiple Airlines Logo
3:55 pm - 7:50 am
CJU
-
ORD
29h 55m
3 stops
$2,287Multiple Airlines
Mon, Jun 29 - Mon, Jul 6

Cathay Pacific flights from Illinois to Jeju-do

Our best Cathay Pacific deals on Illinois to Jeju-do flight tickets
Cathay Pacific
Jun 29
ORD4:00 pmChicago O'Hare Intl
24h 30m
1 stop
CJU6:30 amJeju City
Jul 6
CJU7:30 amJeju City
20h 50m
1 stop
ORD2:20 pmChicago O'Hare Intl
$1,947
Cathay Pacific
Jun 12
ORD4:15 pmChicago O'Hare Intl
24h 15m
1 stop
CJU6:30 amJeju City
Jun 19
CJU7:30 amJeju City
20h 50m
1 stop
ORD2:20 pmChicago O'Hare Intl
$2,120
Cathay Pacific
Jun 28
ORD4:00 pmChicago O'Hare Intl
24h 30m
1 stop
CJU6:30 amJeju City
Jul 5
CJU7:30 amJeju City
20h 50m
1 stop
ORD2:20 pmChicago O'Hare Intl
$2,289

Korean Air flights from Illinois to Jeju-do

Our best Korean Air deals on Illinois to Jeju-do flight tickets
Korean Air
Aug 5
ORD12:30 pmChicago O'Hare Intl
19h 15m
1 stop
CJU9:45 pmJeju City
Aug 14
CJU8:20 pmJeju City
27h 20m
1 stop
ORD9:40 amChicago O'Hare Intl
$7,297
Korean Air
Aug 5
ORD12:30 pmChicago O'Hare Intl
32h 55m
1 stop
CJU11:25 amJeju City
Aug 14
CJU5:00 pmJeju City
30h 40m
1 stop
ORD9:40 amChicago O'Hare Intl
$7,370

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Mon 6/29

4:00 pm-6:30 am

1 stop24h 30m

Jeju City

Mon 7/6

7:30 am-2:20 pm

1 stop20h 50m

$1,947

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Fri 6/12

9:55 am-7:45 am

2 stops31h 50m

Jeju City

Fri 6/19

3:55 pm-1:22 pm

3 stops35h 27m

$2,012

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Fri 6/12

5:30 pm-7:15 am

2 stops47h 45m

Jeju City

Fri 6/19

7:30 am-2:20 pm

1 stop20h 50m

$2,065

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Fri 6/12

8:20 pm-7:30 am

2 stops45h 10m

Jeju City

Fri 6/19

7:30 am-9:00 pm

2 stops27h 30m

$2,105
Quickest round-trip

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Fri 6/12

4:15 pm-6:30 am

1 stop24h 15m

Jeju City

Fri 6/19

7:30 am-2:20 pm

1 stop20h 50m

$2,120

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Fri 6/12

2:15 pm-9:35 am

3 stops29h 20m

Jeju City

Fri 6/19

3:55 pm-1:22 pm

3 stops35h 27m

$2,178

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 6/28

12:30 am-9:35 am

1 stop19h 05m

Jeju City

Mon 7/6

7:30 am-9:10 pm

2 stops27h 40m

$2,194

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 6/28

8:10 pm-6:05 am

2 stops43h 55m

Jeju City

Sun 7/5

7:30 am-2:20 pm

1 stop20h 50m

$2,254

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 6/28

12:30 am-9:35 am

1 stop19h 05m

Jeju City

Mon 7/6

8:45 am-9:10 pm

3 stops26h 25m

$2,279

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Mon 6/29

8:50 am-8:35 am

3 stops33h 45m

Jeju City

Mon 7/6

3:55 pm-7:50 am

3 stops29h 55m

$2,287

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Illinois to Jeju-do flight deals and tips

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

Fastest flight time

20h 29m

Direct flights

None
The fastest flight from Illinois to Jeju-do takes 20h 29m
There are no direct flights from Illinois to Jeju-do. There are no popular flight routes from Illinois to Jeju-do.
Search flight deals

Frequently asked questions about flying from Illinois to Jeju-do

  • When did momondo last update prices for flights from Illinois to Jeju-do?

    Prices for flights from Illinois to Jeju-do are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Jeju-do.

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

    The travel and health documents required for your trip to Jeju-do can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Jeju-do. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Illinois to Jeju-do

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

    Search flight deals from Illinois to Jeju-do. While viewing offers you’ll have the option to create a Price Alert.

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

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • 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.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Jeju-do. momondo saves you time and could save you money on your trip.

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

All flight searches from Illinois to Jeju-do on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Illinois and Jeju-do by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Illinois to Jeju-do 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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Mon 6/15
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Find better results for your trip to Jeju-do

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