Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Illinois to Jeju-do from $637

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-do departing on 8/9. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Illinois to Jeju-do

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:52 pm - 9:45 am
ORD
-
CJU
25h 53m
2 stops
Multiple Airlines Logo
10:30 am - 6:20 am
CJU
-
ORD
33h 50m
2 stops
$1,413Multiple Airlines
Tue, May 12 - Tue, May 19
Multiple Airlines Logo
5:52 pm - 5:30 pm
ORD
-
CJU
33h 38m
2 stops
Multiple Airlines Logo
12:20 pm - 6:40 am
CJU
-
ORD
32h 20m
2 stops
$1,418Multiple Airlines
Tue, Apr 28 - Tue, May 5
Multiple Airlines Logo
12:30 am - 6:10 am
ORD
-
CJU
39h 40m
1 stop
Multiple Airlines Logo
10:15 pm - 6:40 am
CJU
-
ORD
46h 25m
2 stops
$1,585Multiple Airlines
Sat, Apr 18 - Sun, May 3
Multiple Airlines Logo
5:52 pm - 9:45 am
ORD
-
CJU
25h 53m
2 stops
Multiple Airlines Logo
10:30 am - 9:00 pm
CJU
-
ORD
24h 30m
1 stop
$1,618Multiple Airlines
Tue, May 12 - Tue, May 19
Multiple Airlines Logo
12:30 am - 6:10 am
ORD
-
CJU
39h 40m
1 stop
Multiple Airlines Logo
12:20 pm - 6:40 am
CJU
-
ORD
32h 20m
2 stops
$1,625Multiple Airlines
Mon, Apr 27 - Tue, May 5
Multiple Airlines Logo
10:15 am - 6:10 am
ORD
-
CJU
29h 55m
2 stops
Multiple Airlines Logo
10:15 pm - 7:45 am
CJU
-
ORD
47h 30m
2 stops
$1,626Multiple Airlines
Sun, Apr 19 - Sun, May 3
Multiple Airlines Logo
5:52 pm - 5:30 pm
ORD
-
CJU
33h 38m
2 stops
Multiple Airlines Logo
10:15 pm - 6:20 am
CJU
-
ORD
46h 05m
2 stops
$1,657Multiple Airlines
Sun, May 10 - Sun, May 17
Multiple Airlines Logo
5:52 pm - 8:20 pm
ORD
-
CJU
36h 28m
3 stops
Multiple Airlines Logo
8:45 am - 6:20 am
CJU
-
ORD
59h 35m
3 stops
$1,689Multiple Airlines
Sun, May 10 - Sun, May 17
Multiple Airlines Logo
5:52 pm - 5:30 pm
ORD
-
CJU
33h 38m
2 stops
Multiple Airlines Logo
12:20 pm - 9:00 pm
CJU
-
ORD
22h 40m
1 stop
$1,701Multiple Airlines
Tue, Apr 28 - Tue, May 5
Multiple Airlines Logo
12:30 am - 6:10 am
ORD
-
CJU
39h 40m
1 stop
Multiple Airlines Logo
10:15 pm - 9:00 pm
CJU
-
ORD
36h 45m
1 stop
$1,722Multiple Airlines
Sat, Apr 18 - Sun, May 3

Cathay Pacific flights from Illinois to Jeju-do

Our best Cathay Pacific deals on Illinois to Jeju-do flight tickets
Cathay Pacific
Sep 6
ORD4:00 pmChicago O'Hare Intl
24h 30m
1 stop
CJU6:30 amJeju City
Sep 30
CJU7:30 amJeju City
20h 25m
1 stop
ORD1:55 pmChicago O'Hare Intl
$1,809
Cathay Pacific
Sep 6
ORD4:00 pmChicago O'Hare Intl
24h 30m
1 stop
CJU6:30 amJeju City
Sep 30
CJU7:30 amJeju City
20h 25m
1 stop
ORD1:55 pmChicago O'Hare Intl
$1,899
Cathay Pacific
Aug 8
ORD4:00 pmChicago O'Hare Intl
24h 30m
1 stop
CJU6:30 amJeju City
Aug 14
CJU7:30 amJeju City
20h 50m
1 stop
ORD2:20 pmChicago O'Hare Intl
$2,213

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 March 31, 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

Tue 5/12

5:52 pm-9:45 am

2 stops25h 53m

Jeju City

Tue 5/19

10:30 am-6:20 am

2 stops33h 50m

$1,413

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Tue 4/28

5:52 pm-5:30 pm

2 stops33h 38m

Jeju City

Tue 5/5

12:20 pm-6:40 am

2 stops32h 20m

$1,418

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sat 4/18

12:30 am-6:10 am

1 stop39h 40m

Jeju City

Sun 5/3

10:15 pm-6:40 am

2 stops46h 25m

$1,585
Quickest round-trip

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Tue 5/12

5:52 pm-9:45 am

2 stops25h 53m

Jeju City

Tue 5/19

10:30 am-9:00 pm

1 stop24h 30m

$1,618

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Mon 4/27

12:30 am-6:10 am

1 stop39h 40m

Jeju City

Tue 5/5

12:20 pm-6:40 am

2 stops32h 20m

$1,625

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 4/19

10:15 am-6:10 am

2 stops29h 55m

Jeju City

Sun 5/3

10:15 pm-7:45 am

2 stops47h 30m

$1,626

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 5/10

5:52 pm-5:30 pm

2 stops33h 38m

Jeju City

Sun 5/17

10:15 pm-6:20 am

2 stops46h 05m

$1,657

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 5/10

5:52 pm-8:20 pm

3 stops36h 28m

Jeju City

Sun 5/17

8:45 am-6:20 am

3 stops59h 35m

$1,689

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Tue 4/28

5:52 pm-5:30 pm

2 stops33h 38m

Jeju City

Tue 5/5

12:20 pm-9:00 pm

1 stop22h 40m

$1,701

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sat 4/18

12:30 am-6:10 am

1 stop39h 40m

Jeju City

Sun 5/3

10:15 pm-9:00 pm

1 stop36h 45m

$1,722

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

See travel insights to Jeju-do from

How to get the cheapest flight ticket from Illinois to Jeju-do

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-do?

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

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

19h 42m

Direct flights

None
The fastest flight from Illinois to Jeju-do takes 19h 42m
There are no direct flights from Illinois to Jeju-do. There are no popular flight routes from Illinois to Jeju-do.
Search flight deals

  • 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.

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.

An easier way to manage your Jeju-do trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 4/30
Thu 5/7
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Jeju-do

Popular cities in Jeju-do

Popular flights according to clicks in the last 7 days on momondo
Flights to Seoulfrom $589
Flights to Jeju Cityfrom $1,008
Flights to Busanfrom $750
Flights to Daegufrom $970
Flights to Yeosu
Flights to Gwangjufrom $1,756
Flights to Jinjufrom $1,747
Flights to Muan