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Cheap flights from Illinois to Jeju-do from $727

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 6/11. 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.
Multiple Airlines Logo
3:35 pm - 6:40 am
ORD
-
CJU
25h 05m
1 stop
Multiple Airlines Logo
7:55 am - 8:35 pm
CJU
-
ORD
26h 40m
2 stops
$1,354Multiple Airlines
Sun, Mar 8 - Mon, Mar 16
Cathay Pacific Logo
4:15 pm - 6:20 am
ORD
-
CJU
24h 05m
1 stop
Cathay Pacific Logo
7:30 am - 1:55 pm
CJU
-
ORD
20h 25m
1 stop
$1,493Cathay Pacific
Tue, Apr 7 - Mon, Apr 13
Multiple Airlines Logo
4:15 pm - 6:20 am
ORD
-
CJU
24h 05m
1 stop
Multiple Airlines Logo
10:40 pm - 5:50 am
CJU
-
ORD
45h 10m
2 stops
$1,517Multiple Airlines
Tue, Apr 7 - Mon, Apr 13
Multiple Airlines Logo
11:35 am - 7:40 am
ORD
-
CJU
30h 05m
2 stops
Multiple Airlines Logo
7:55 am - 8:35 pm
CJU
-
ORD
26h 40m
2 stops
$1,555Multiple Airlines
Sun, Mar 8 - Mon, Mar 16
Air China Logo
1:18 pm - 1:55 pm
ORD
-
CJU
34h 37m
2 stops
Air China Logo
10:05 pm - 11:43 pm
CJU
-
ORD
39h 38m
2 stops
$1,567Air China
Tue, Apr 7 - Mon, Apr 13
Multiple Airlines Logo
8:40 am - 7:35 am
ORD
-
CJU
32h 55m
3 stops
Multiple Airlines Logo
10:20 pm - 1:55 pm
CJU
-
ORD
29h 35m
2 stops
$1,730Multiple Airlines
Tue, Apr 7 - Mon, Apr 13
Multiple Airlines Logo
4:15 pm - 6:20 am
ORD
-
CJU
24h 05m
1 stop
Multiple Airlines Logo
10:35 pm - 2:50 pm
CJU
-
ORD
54h 15m
2 stops
$1,744Multiple Airlines
Sun, Mar 29 - Sun, Apr 5
Multiple Airlines Logo
4:15 pm - 6:20 am
ORD
-
CJU
24h 05m
1 stop
Multiple Airlines Logo
10:35 pm - 2:50 pm
CJU
-
ORD
54h 15m
2 stops
$1,774Multiple Airlines
Sun, Mar 29 - Sun, Apr 5
Multiple Airlines Logo
7:24 pm - 5:30 pm
ORD
-
CJU
32h 06m
2 stops
Multiple Airlines Logo
10:30 am - 9:00 pm
CJU
-
ORD
24h 30m
1 stop
$1,796Multiple Airlines
Sat, Mar 28 - Sat, Apr 4
Multiple Airlines Logo
12:50 pm - 12:50 pm
ORD
-
CJU
34h 00m
3 stops
Multiple Airlines Logo
6:45 am - 2:41 pm
CJU
-
ORD
45h 56m
2 stops
$1,916Multiple Airlines
Sun, Mar 8 - Mon, Mar 16

Cathay Pacific flights from Illinois to Jeju-do

Our best Cathay Pacific deals on Illinois to Jeju-do flight tickets
Cathay Pacific
Apr 7
ORD4:15 pmChicago O'Hare Intl
24h 05m
1 stop
CJU6:20 amJeju City
Apr 13
CJU7:30 amJeju City
20h 25m
1 stop
ORD1:55 pmChicago O'Hare Intl
$1,493
Cathay Pacific
Mar 8
ORD3:35 pmChicago O'Hare Intl
25h 05m
1 stop
CJU6:40 amJeju City
Mar 11
CJU7:55 amJeju City
20h 00m
1 stop
ORD1:55 pmChicago O'Hare Intl
$2,677

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 February 14, 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

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 3/8

3:35 pm-6:40 am

1 stop25h 05m

Jeju City

Mon 3/16

7:55 am-8:35 pm

2 stops26h 40m

$1,354

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Tue 4/7

4:15 pm-6:20 am

1 stop24h 05m

Jeju City

Mon 4/13

7:30 am-1:55 pm

1 stop20h 25m

$1,493

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Tue 4/7

4:15 pm-6:20 am

1 stop24h 05m

Jeju City

Mon 4/13

10:40 pm-5:50 am

2 stops45h 10m

$1,517

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 3/8

11:35 am-7:40 am

2 stops30h 05m

Jeju City

Mon 3/16

7:55 am-8:35 pm

2 stops26h 40m

$1,555

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Tue 4/7

1:18 pm-1:55 pm

2 stops34h 37m

Jeju City

Mon 4/13

10:05 pm-11:43 pm

2 stops39h 38m

$1,567

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Tue 4/7

8:40 am-7:35 am

3 stops32h 55m

Jeju City

Mon 4/13

10:20 pm-1:55 pm

2 stops29h 35m

$1,730

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 3/29

4:15 pm-6:20 am

1 stop24h 05m

Jeju City

Sun 4/5

10:35 pm-2:50 pm

2 stops54h 15m

$1,744

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 3/29

4:15 pm-6:20 am

1 stop24h 05m

Jeju City

Sun 4/5

10:35 pm-2:50 pm

2 stops54h 15m

$1,774

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sat 3/28

7:24 pm-5:30 pm

2 stops32h 06m

Jeju City

Sat 4/4

10:30 am-9:00 pm

1 stop24h 30m

$1,796

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

Sun 3/8

12:50 pm-12:50 pm

3 stops34h 00m

Jeju City

Mon 3/16

6:45 am-2:41 pm

2 stops45h 56m

$1,916

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

Fastest flight time

25h 05m

Direct flights

None
The fastest flight from Illinois to Jeju-do takes 25h 05m
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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