What is the cheapest time of day to fly from IL to CJ?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Jeju-do as you normally would.

Can I find deals for flights from Illinois to Jeju-do that include hotel bookings?

Yes. In addition to deals on Illinois to Jeju-do flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Illinois to Jeju-do?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Jeju-do.

Can I find deals for business class flights from Illinois to Jeju-do?

Yes. Cheapflights offers flight deals from Illinois to Jeju-do by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$676+ Flights from Illinois to Jeju-do

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Cheap flight deals from Illinois to Jeju-do

Round-trip from	$1,411 (Gurufare)
One-way from	$1,311 (Yatra.com)

From Illinois to Jeju-do

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One-way flight from Illinois to Jeju-do

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Find flight deals from Illinois to Jeju-do

Cheapest flights from Illinois to Jeju-do
Explore the most affordable flight options available from Illinois to Jeju-do. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.

mié. 10/154:00 pmORD - CJU

1 stop24h 20mCathay Pacific

mié. 10/227:55 amCJU - ORD

1 stop20h 30mCathay Pacific

Deal found 4/29

$1,317

mié. 10/159:00 amORD - CJU

2 stops46h 15mAir China

mié. 10/2210:05 pmCJU - ORD

2 stops46h 05mAir China

Deal found 4/29

$1,562

mar. 6/101:30 amORD - CJU

3 stops25h 10mMultiple Airlines

mié. 6/188:00 amCJU - ORD

3 stops42h 38mMultiple Airlines

Deal found 4/29

$1,616

Best flights from Illinois to Jeju-do
Discover carefully curated flight deals from Illinois to Jeju-do that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated mayo 1, 2025.

vie. 7/44:00 pmORD - CJU

1 stop31h 30mCathay Pacific

mié. 7/167:55 amCJU - ORD

1 stop20h 30mCathay Pacific

Deal found 4/30

$1,411

sáb. 6/148:25 pmORD - CJU

3 stops35h 50mMultiple Airlines

sáb. 6/217:55 amCJU - ORD

3 stops36h 56mMultiple Airlines

Deal found 4/30

$1,833

vie. 7/49:05 amORD - CJU

2 stops46h 00mAir China

mié. 7/1610:05 pmCJU - ORD

2 stops45h 40mAir China

Deal found 4/30

$2,778

Last-minute flights from Illinois to Jeju-do
Discover last-minute flight deals from Illinois to Jeju-do. Data last updated mayo 1, 2025 and is based on user searches.

sáb. 5/3112:30 amORD - CJU

1 stop27h 00mMultiple Airlines

sáb. 6/711:20 amCJU - ORD

2 stops36h 20mMultiple Airlines

Deal found 4/29

$2,242

One-way flights from Illinois to Jeju-do
Search for one-way flight options from Illinois to Jeju-do. Find affordable one-way fares based on user searches. Data last updated mayo 1, 2025.

sáb. 6/146:48 amORD - CJU

2 stops39h 42mChina Eastern

Deal found 4/30

$1,311

sáb. 6/144:00 pmORD - CJU

1 stop24h 20mCathay Pacific

Deal found 4/30

$1,468

vie. 6/131:30 amORD - CJU

2 stops22h 40mMultiple Airlines

Deal found 4/30

$1,678

Cheapflights 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

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

mié. 10/15

4:00 pm-6:20 am

1 stop24h 20m

Jeju City

mié. 10/22

7:55 am-2:25 pm

1 stop20h 30m

$1,317

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

mié. 10/15

9:00 am-9:15 pm

2 stops46h 15m

Jeju City

mié. 10/22

10:05 pm-6:10 am

2 stops46h 05m

$1,562

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

mar. 6/10

1:30 am-4:40 pm

3 stops25h 10m

Jeju City

mié. 6/18

8:00 am-12:38 pm

3 stops42h 38m

$1,616

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

mié. 10/15

8:00 am-5:30 pm

2 stops43h 30m

$676

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

mié. 10/15

4:00 pm-6:20 am

1 stop24h 20m

$884

ChicagoJeju City

ORD - CJU

ORDCJU

Chicago O'Hare Intl

vie. 6/13

7:18 pm-6:10 pm

2 stops56h 52m

$1,241

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Best time to book a flight from Illinois to Jeju-do

Have a flexible travel schedule? Discover the best time to fly to Jeju-do from Illinois with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Jeju-do

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Jeju-do

Cathay Pacific

7.5

Good

855 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Mar 2025

BOS - HKG

It would have been nice to understand the dates of takeoff! We missed our flight and now have to pay an extra $454.00 Very stressful and not easy to check in or get information

Cathay Pacific

7.5

Good

855 reviews

Cathay Pacific

7.5

Good

855 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Mar 2025

BOS - HKG

It would have been nice to understand the dates of takeoff! We missed our flight and now have to pay an extra $454.00 Very stressful and not easy to check in or get information

China Eastern

7.1

Good

148 reviews

Cathay Pacific

7.5

Good

855 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Mar 2025

BOS - HKG

It would have been nice to understand the dates of takeoff! We missed our flight and now have to pay an extra $454.00 Very stressful and not easy to check in or get information

Related info for your journey

Can I find deals for flights from Illinois to Jeju-do that include hotel bookings?
Yes. In addition to deals on Illinois to Jeju-do flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Illinois to Jeju-do?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Jeju-do.
Can I find deals for business class flights from Illinois to Jeju-do?
Yes. Cheapflights offers flight deals from Illinois to Jeju-do by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

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$676+ Cheap flights from Illinois to Jeju-do

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Jeju-do with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Illinois to Jeju-do

Keep the following information in mind while searching for Illinois to Jeju-do flight deals. Data was last updated mayo 1, 2025.

Round-trip from

One-way from

Find flight deals from Illinois to Jeju-do

Cheapest flights from Illinois to Jeju-doExplore the most affordable flight options available from Illinois to Jeju-do. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.

Explore the most affordable flight options available from Illinois to Jeju-do. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Jeju-do that are best for you.

Best time to book a flight from Illinois to Jeju-do

Have a flexible travel schedule? Discover the best time to fly to Jeju-do from Illinois with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Jeju-do

Reviews of airlines servicing Jeju-do

Related info for your journey

Find useful and relevant information for your journey from Illinois to Jeju-do. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Illinois to Jeju-do that include hotel bookings?

How can I find direct flights from Illinois to Jeju-do?

Can I find deals for business class flights from Illinois to Jeju-do?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Jeju-do

See prices for flight routes from nearby airports that may be better suited for you.

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Book with Flexibility

Travel Smart

Cheapest flights from Illinois to Jeju-do
Explore the most affordable flight options available from Illinois to Jeju-do. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.