Latest deals
FAQs
Price Alerts

Cheap flights from Illinois to Jeju-do from $637

1 adult
1 adult, Economy, 0 bags

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
4:15 pm - 6:30 amORD  Chicago O'Hare Intl-CJU Jeju City
24h 15m1 stop Hong Kong Intl
Cathay Pacific Logo
7:30 am - 1:55 pmCJU  Jeju City-ORD Chicago O'Hare Intl
20h 25m1 stop Hong Kong Intl
$1,263Cathay Pacific
Sun, Oct 18 - Thu, Oct 22
Cathay Pacific Logo
4:15 pm - 6:40 amORD  Chicago O'Hare Intl-CJU Jeju City
24h 25m1 stop Hong Kong Intl
Cathay Pacific Logo
7:45 am - 1:30 pmCJU  Jeju City-ORD Chicago O'Hare Intl
19h 45m1 stop Hong Kong Intl
$1,279Cathay Pacific
Sat, Oct 24 - Sat, Oct 31
Cathay Pacific Logo
2:10 pm - 6:40 amORD  Chicago O'Hare Intl-CJU Jeju City
25h 30m1 stop Hong Kong Intl
Cathay Pacific Logo
7:45 am - 1:30 pmCJU  Jeju City-ORD Chicago O'Hare Intl
19h 45m1 stop Hong Kong Intl
$1,304Cathay Pacific
Mon, Mar 8 - Mon, Mar 22
Cathay Pacific Logo
2:10 pm - 6:40 amORD  Chicago O'Hare Intl-CJU Jeju City
25h 30m1 stop Hong Kong Intl
Cathay Pacific Logo
7:45 am - 12:30 pmCJU  Jeju City-ORD Chicago O'Hare Intl
19h 45m1 stop Hong Kong Intl
$1,335Cathay Pacific
Tue, Mar 2 - Thu, Mar 11
Cathay Pacific Logo
2:10 pm - 6:40 amORD  Chicago O'Hare Intl-CJU Jeju City
25h 30m1 stop Hong Kong Intl
Cathay Pacific Logo
7:45 am - 12:30 pmCJU  Jeju City-ORD Chicago O'Hare Intl
19h 45m1 stop Hong Kong Intl
$1,382Cathay Pacific
Tue, Feb 16 - Sat, Feb 20
Cathay Pacific Logo
3:10 pm - 6:40 amORD  Chicago O'Hare Intl-CJU Jeju City
25h 30m1 stop Hong Kong Intl
Cathay Pacific Logo
7:45 am - 1:30 pmCJU  Jeju City-ORD Chicago O'Hare Intl
19h 45m1 stop Hong Kong Intl
$1,412Cathay Pacific
Sun, Oct 25 - Sun, Nov 1
Cathay Pacific Logo
2:10 pm - 6:40 amORD  Chicago O'Hare Intl-CJU Jeju City
25h 30m1 stop Hong Kong Intl
Cathay Pacific Logo
7:45 am - 12:30 pmCJU  Jeju City-ORD Chicago O'Hare Intl
19h 45m1 stop Hong Kong Intl
$1,416Cathay Pacific
Tue, Feb 16 - Sat, Feb 20
Cathay Pacific Logo
2:10 pm - 6:40 amORD  Chicago O'Hare Intl-CJU Jeju City
25h 30m1 stop Hong Kong Intl
Cathay Pacific Logo
7:45 am - 12:30 pmCJU  Jeju City-ORD Chicago O'Hare Intl
19h 45m1 stop Hong Kong Intl
$1,421Cathay Pacific
Tue, Feb 16 - Sat, Feb 20
Multiple Airlines Logo
12:30 am - 4:05 pmORD  Chicago O'Hare Intl-CJU Jeju City
49h 35m2 stops Taipei City Taiwan Taoyuan Intl Busan Gimhae
Multiple Airlines Logo
9:15 am - 8:35 pmCJU  Jeju City-ORD Chicago O'Hare Intl
49h 20m2 stops Busan Gimhae Taipei City Taiwan Taoyuan Intl
$1,448Multiple Airlines
Sat, Oct 24 - Sun, Nov 1
Multiple Airlines Logo
2:10 pm - 6:40 amORD  Chicago O'Hare Intl-CJU Jeju City
25h 30m1 stop Hong Kong Intl
Multiple Airlines Logo
7:45 am - 8:35 pmCJU  Jeju City-ORD Chicago O'Hare Intl
26h 50m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl
$1,488Multiple Airlines
Mon, Mar 8 - Mon, Mar 22

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

Cathay Pacific flights from Illinois to Jeju-do

Our best Cathay Pacific deals on Illinois to Jeju-do flight tickets
Cathay Pacific
Oct 18
ORD4:15 pmChicago O'Hare Intl
24h 15m
1 stop
CJU6:30 amJeju City
Oct 22
CJU7:30 amJeju City
20h 25m
1 stop
ORD1:55 pmChicago O'Hare Intl
$1,263
Cathay Pacific
Oct 24
ORD4:15 pmChicago O'Hare Intl
24h 25m
1 stop
CJU6:40 amJeju City
Oct 31
CJU7:45 amJeju City
19h 45m
1 stop
ORD1:30 pmChicago O'Hare Intl
$1,279
Cathay Pacific
Mar 8
ORD2:10 pmChicago O'Hare Intl
25h 30m
1 stop
CJU6:40 amJeju City
Mar 22
CJU7:45 amJeju City
19h 45m
1 stop
ORD1:30 pmChicago O'Hare Intl
$1,304

China Southern flights from Illinois to Jeju-do

Our best China Southern deals on Illinois to Jeju-do flight tickets
China Southern
Feb 16
ORD5:10 pmChicago O'Hare Intl
29h 25m
2 stops
CJU1:35 pmJeju City
Feb 20
CJU2:35 pmJeju City
29h 25m
2 stops
ORD5:00 amChicago O'Hare Intl
$2,298
China Southern
Feb 16
ORD5:10 pmChicago O'Hare Intl
29h 25m
2 stops
CJU1:35 pmJeju City
Feb 20
CJU2:35 pmJeju City
29h 25m
2 stops
ORD5:00 amChicago O'Hare Intl
$3,494

momondo Fare Finder

 
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 Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Sun 10/18

4:15 pm-6:30 am

1 stop24h 15m

Jeju City

Thu 10/22

7:30 am-1:55 pm

1 stop20h 25m

$1,263
Quickest round-trip

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Sat 10/24

4:15 pm-6:40 am

1 stop24h 25m

Jeju City

Sat 10/31

7:45 am-1:30 pm

1 stop19h 45m

$1,279

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Mon 3/8

2:10 pm-6:40 am

1 stop25h 30m

Jeju City

Mon 3/22

7:45 am-1:30 pm

1 stop19h 45m

$1,304

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Tue 3/2

2:10 pm-6:40 am

1 stop25h 30m

Jeju City

Thu 3/11

7:45 am-12:30 pm

1 stop19h 45m

$1,335

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Tue 2/16

2:10 pm-6:40 am

1 stop25h 30m

Jeju City

Sat 2/20

7:45 am-12:30 pm

1 stop19h 45m

$1,382

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Sun 10/25

3:10 pm-6:40 am

1 stop25h 30m

Jeju City

Sun 11/1

7:45 am-1:30 pm

1 stop19h 45m

$1,412

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Tue 2/16

2:10 pm-6:40 am

1 stop25h 30m

Jeju City

Sat 2/20

7:45 am-12:30 pm

1 stop19h 45m

$1,416

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Tue 2/16

2:10 pm-6:40 am

1 stop25h 30m

Jeju City

Sat 2/20

7:45 am-12:30 pm

1 stop19h 45m

$1,421

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Sat 10/24

12:30 am-4:05 pm

2 stops49h 35m

Jeju City

Sun 11/1

9:15 am-8:35 pm

2 stops49h 20m

$1,448

ChicagoJeju City

ORD Chicago O'Hare Intl - CJU Jeju City

ORDCJU

Chicago O'Hare Intl

Mon 3/8

2:10 pm-6:40 am

1 stop25h 30m

Jeju City

Mon 3/22

7:45 am-8:35 pm

2 stops26h 50m

$1,488

Flights are sorted by cheapest round-trip flights first.

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

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

Best Price Found

$637

Fastest flight time

24h 15m

Direct flights

None
The best one-way flight to Jeju-do from Illinois in the past 72 hours is $637. The best round-trip flight deal from Illinois to Jeju-do found on momondo in the last 72 hours is $1,263.
The fastest flight from Illinois to Jeju-do takes 24h 15m
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.

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
Mon 10/12
Mon 10/19
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

Flights to Seoulfrom $615
Flights to Jeju Cityfrom $855
Flights to Busanfrom $818
Flights to Daegufrom $1,011
Flights to Gwangjufrom $888
Flights to Yeosu
Flights to Jinjufrom $1,461
Flights to Ulsanfrom $1,469
Flights to Muan