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Cheap flights from Illinois to Jeju-do from $517

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 2/22. 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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0 bags

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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
3:35 pm - 6:40 amORD-CJU
25h 05m1 stop
Cathay Pacific Logo
7:55 am - 1:55 pmCJU-ORD
20h 00m1 stop
$1,078Cathay Pacific
Find Deal
lun., mar. 9 - vie., mar. 13
Cathay Pacific Logo
2:35 pm - 6:40 amORD-CJU
25h 05m1 stop
Cathay Pacific Logo
7:55 am - 12:55 pmCJU-ORD
20h 00m1 stop
$1,501Cathay Pacific
Find Deal
jue., dic. 4 - jue., dic. 11
Multiple Airlines Logo
5:51 pm - 5:25 pmORD-CJU
32h 34m2 stops
Multiple Airlines Logo
12:05 pm - 7:35 pmCJU-ORD
22h 30m1 stop
$1,540Multiple Airlines
Find Deal
jue., dic. 4 - jue., dic. 11
Multiple Airlines Logo
5:51 pm - 5:35 pmORD-CJU
32h 44m2 stops
Multiple Airlines Logo
12:05 pm - 7:35 pmCJU-ORD
22h 30m1 stop
$1,631Multiple Airlines
Find Deal
vie., dic. 5 - vie., dic. 12
Multiple Airlines Logo
2:35 pm - 6:40 amORD-CJU
25h 05m1 stop
Multiple Airlines Logo
8:00 am - 6:00 amCJU-ORD
37h 00m3 stops
$1,644Multiple Airlines
Find Deal
jue., dic. 4 - jue., dic. 11
Multiple Airlines Logo
11:30 pm - 5:35 pmORD-CJU
27h 05m1 stop
Multiple Airlines Logo
12:05 pm - 7:35 pmCJU-ORD
22h 30m1 stop
$1,742Multiple Airlines
Find Deal
vie., dic. 5 - vie., dic. 12
Multiple Airlines Logo
11:30 pm - 4:05 pmORD-CJU
49h 35m2 stops
Multiple Airlines Logo
9:20 am - 7:35 pmCJU-ORD
49h 15m2 stops
$1,827Multiple Airlines
Find Deal
vie., dic. 5 - vie., dic. 12
Cathay Pacific Logo
2:35 pm - 6:40 amORD-CJU
25h 05m1 stop
Cathay Pacific Logo
7:55 am - 12:55 pmCJU-ORD
20h 00m1 stop
$2,162Cathay Pacific
Find Deal
vie., dic. 5 - vie., dic. 12
Multiple Airlines Logo
2:35 pm - 6:40 amORD-CJU
25h 05m1 stop
Multiple Airlines Logo
12:35 pm - 2:55 pmCJU-ORD
41h 20m2 stops
$2,774Multiple Airlines
Find Deal
lun., ene. 12 - lun., ene. 19
Multiple Airlines Logo
2:35 pm - 6:40 amORD-CJU
25h 05m1 stop
Multiple Airlines Logo
7:55 am - 12:55 pmCJU-ORD
20h 00m1 stop
$3,391Multiple Airlines
Find Deal
lun., ene. 12 - lun., ene. 19

Cathay Pacific flights from Illinois to Jeju-do

Our best Cathay Pacific deals on Illinois to Jeju-do flight tickets
Cathay Pacific
Mar 9
ORD3:35 pmChicago O'Hare Intl
25h 05m
1 stop
CJU6:40 amJeju City
Mar 13
CJU7:55 amJeju City
20h 00m
1 stop
ORD1:55 pmChicago O'Hare Intl
$1,078
Find similar
Cathay Pacific
Dec 4
ORD2:35 pmChicago O'Hare Intl
25h 05m
1 stop
CJU6:40 amJeju City
Dec 11
CJU7:55 amJeju City
20h 00m
1 stop
ORD12:55 pmChicago O'Hare Intl
$1,501
Find similar
Cathay Pacific
Dec 5
ORD2:35 pmChicago O'Hare Intl
25h 05m
1 stop
CJU6:40 amJeju City
Dec 12
CJU7:55 amJeju City
20h 00m
1 stop
ORD12:55 pmChicago O'Hare Intl
$2,162
Find similar

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 octubre 22, 2025.
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

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

lun. 3/9

3:35 pm-6:40 am

1 stop25h 05m

Jeju City

vie. 3/13

7:55 am-1:55 pm

1 stop20h 00m

$1,078

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

jue. 12/4

2:35 pm-6:40 am

1 stop25h 05m

Jeju City

jue. 12/11

7:55 am-12:55 pm

1 stop20h 00m

$1,501

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

jue. 12/4

5:51 pm-5:25 pm

2 stops32h 34m

Jeju City

jue. 12/11

12:05 pm-7:35 pm

1 stop22h 30m

$1,540

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

vie. 12/5

5:51 pm-5:35 pm

2 stops32h 44m

Jeju City

vie. 12/12

12:05 pm-7:35 pm

1 stop22h 30m

$1,631

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

jue. 12/4

2:35 pm-6:40 am

1 stop25h 05m

Jeju City

jue. 12/11

8:00 am-6:00 am

3 stops37h 00m

$1,644

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

vie. 12/5

11:30 pm-5:35 pm

1 stop27h 05m

Jeju City

vie. 12/12

12:05 pm-7:35 pm

1 stop22h 30m

$1,742

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

vie. 12/5

11:30 pm-4:05 pm

2 stops49h 35m

Jeju City

vie. 12/12

9:20 am-7:35 pm

2 stops49h 15m

$1,827

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

vie. 12/5

2:35 pm-6:40 am

1 stop25h 05m

Jeju City

vie. 12/12

7:55 am-12:55 pm

1 stop20h 00m

$2,162

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

lun. 1/12

2:35 pm-6:40 am

1 stop25h 05m

Jeju City

lun. 1/19

12:35 pm-2:55 pm

2 stops41h 20m

$2,774

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

lun. 1/12

2:35 pm-6:40 am

1 stop25h 05m

Jeju City

lun. 1/19

7:55 am-12:55 pm

1 stop20h 00m

$3,391

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-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

Direct flights

None
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.

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