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Incheon Intl

$360+ Cheap flights from Illinois to Incheon Intl (ICN)

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ICN
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap flight deals from Illinois to Incheon Intl

Cheapest flights from Illinois to Incheon Intl
Explore the most affordable flight options available from Illinois to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

This Gotogate deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:35 pmORD - ICN
1 stop39h 50mCathay Pacific
Fri 1/231:45 pmICN - ORD
1 stop38h 10mCathay Pacific
Deal found 12/25$1,051
This Kiwi.com deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:30 pmORD - ICN
1 stop28h 15mMultiple Airlines
Fri 1/236:55 pmICN - ORD
2 stops55h 02mMultiple Airlines
Deal found 12/25$1,227
This Mytrip deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:00 amORD - ICN
2 stops33h 40mMultiple Airlines
Wed 1/79:55 pmICN - ORD
2 stops34h 57mMultiple Airlines
Deal found 12/27$1,374
This Trip.com deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:30 pmORD - ICN
1 stop20h 00mMultiple Airlines
Wed 1/1410:20 pmICN - ORD
2 stops28h 48mMultiple Airlines
Deal found 12/26$1,420
This Mytrip deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:30 amORD - ICN
2 stops31h 10mMultiple Airlines
Tue 1/69:55 pmICN - ORD
1 stop25h 36mMultiple Airlines
Deal found 12/25$1,421
This Mytrip deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:34 amORD - ICN
1 stop29h 06mMultiple Airlines
Tue 1/69:55 pmICN - ORD
1 stop25h 36mMultiple Airlines
Deal found 12/26$1,429
This Booking.com deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:30 pmORD - ICN
1 stop28h 15mEVA Air
Wed 1/143:05 pmICN - ORD
1 stop19h 30mEVA Air
Deal found 12/26$1,431
This Trip.com deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:30 pmORD - ICN
1 stop20h 00mMultiple Airlines
Sun 1/119:55 pmICN - ORD
1 stop39h 47mMultiple Airlines
Deal found 12/26$1,454
This oojo deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:30 pmORD - ICN
1 stop28h 15mEVA Air
Wed 1/147:45 pmICN - ORD
1 stop38h 50mEVA Air
Deal found 12/26$1,460
This Mytrip deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:00 amORD - ICN
2 stops33h 40mMultiple Airlines
Sat 1/109:55 pmICN - ORD
2 stops34h 57mMultiple Airlines
Deal found 12/27$1,481
This Booking.com deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:00 pmORD - ICN
2 stops35h 00mAir Canada
Wed 1/145:55 pmICN - ORD
2 stops38h 13mAir Canada
Deal found 12/26$1,494
This Korean Air deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:05 amSTL - ICN
1 stop18h 25mKorean Air
Thu 1/17:30 pmICN - STL
1 stop17h 46mKorean Air
Deal found 12/26$1,703

Find flight deals from Illinois to Incheon Intl

Keep the following information in mind while searching for Illinois to Incheon Intl flight deals. Data was last updated December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$767
(Kiwi.com)

One-way from

$360
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$2,072

Good round-trip deal

$792 or less

Good one-way deal

$563 or less
Provider with most accurate pricing for Chicago (CHI)-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Seoul (SEL) flights.
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From Illinois to Incheon Intl
Search Deals
One-way flight from Illinois to Incheon Intl
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High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($67 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Illinois to Incheon Intl.
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Price to beat on a one-way flight from Illinois to Incheon Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Incheon Intl 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, Cheapflights users made 2,558,603 searches. Data last updated December 28, 2025.
Use the filters below to find and compare flights from Illinois to Incheon Intl Airport that are best for you.

Fly from

Illinois

Fly to

Incheon Intl

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 1/22

2:50 pm-6:35 pm

1 stop36h 45m

Incheon Intl

Mon 1/26

8:35 pm-1:54 pm

1 stop32h 19m

$779

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sun 4/19

6:59 pm-2:10 pm

1 stop29h 11m

Incheon Intl

Thu 4/30

7:20 pm-12:22 am

1 stop19h 02m

$846

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sun 2/1

5:00 pm-5:40 am

1 stop21h 40m

Incheon Intl

Thu 2/5

12:45 pm-3:37 pm

1 stop17h 52m

$846

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 2/11

7:15 am-4:45 pm

1 stop18h 30m

Incheon Intl

Wed 2/18

7:15 pm-11:22 pm

1 stop19h 07m

$846

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 1/20

9:59 am-5:45 am

1 stop28h 46m

Incheon Intl

Sun 2/15

7:40 pm-12:25 am

1 stop19h 45m

$846

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 2/9

6:57 pm-5:45 am

1 stop19h 48m

Incheon Intl

Mon 2/16

9:35 am-8:43 pm

1 stop26h 08m

$846

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 1/23

8:30 am-5:40 am

2 stops30h 10m

Incheon Intl

Mon 2/9

12:45 pm-10:00 pm

2 stops24h 15m

$850

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 2/11

9:57 am-5:40 am

2 stops28h 43m

Incheon Intl

Wed 2/18

12:45 pm-10:14 pm

3 stops24h 29m

$850

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 1/22

11:20 am-5:40 am

2 stops27h 20m

Incheon Intl

Mon 1/26

12:45 pm-10:58 pm

2 stops25h 13m

$850

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Thu 2/19

2:35 pm-12:45 pm

1 stop31h 10m

Incheon Intl

Tue 3/10

1:45 pm-1:55 pm

1 stop38h 10m

$881

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/28

Showing 1-10 of 56 results
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Best time to book a flight from Illinois to Incheon Intl

Have a flexible travel schedule? Discover the best time to fly to Incheon Intl 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 Incheon Intl Airport

What is the cheapest month to book a flight from Illinois to Incheon Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Illinois to Incheon Intl Airport (average of $202). Flying from Illinois to Incheon Intl Airport in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Illinois to Incheon Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 28, 2025.

When flying from Illinois to Incheon Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 44% versus a flight in the afternoon.

Related info for your journey

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

  • How long is the flight from Illinois to Incheon Intl Airport?

    Airlines like Delta, United Airlines, and Cathay Pacific fly from Illinois to Incheon Intl Airport in about 21h 40m. The time it takes to get you to your destination can typically vary by up to 9h 30m. Airlines will cover a distance of 6670 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Incheon Intl Airport one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at $446. Turkish Airlines flights start at $491 while deals on American Airlines start at $504 one-way.

  • What are the most popular routes from Illinois to Incheon Intl Airport?

    The most popular route from Illinois to Incheon Intl Airport is Chicago O'Hare Intl - Incheon Intl. You may also consider Chicago Midway - Incheon Intl or Lambert-St Louis - Incheon Intl.

  • What are the most reliable airlines from Illinois to Incheon Intl Airport?

    Consider Delta (64%), Korean Air (51%) or Atlas Air (42%) when booking your flight. These represent the most reliable airlines when flying from Illinois to Incheon Intl Airport.

  • What are the cheapest flights from Illinois to Incheon Intl Airport?

    Looking for the cheapest flight from Illinois to Incheon Intl Airport? While on average our users pay $2,286, our data indicates the cheapest price to be $402. The most popular route (Chicago O'Hare Intl - Incheon Intl), is priced around $767.

  • Can I find deals for flights from Illinois to Incheon Intl that include hotel bookings?

    Yes. In addition to deals on Illinois to Incheon Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Incheon Intl?

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

  • Can I find deals for business class flights from Illinois to Incheon Intl?

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

  • What is the cheapest month to book a flight from Illinois to Incheon Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Incheon Intl Airport (average of $202). Flying from Illinois to Incheon Intl Airport in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Incheon Intl Airport?

Book flights to Incheon Intl Airport if you plan to visit one of these locations
Suwon
Seongnam

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Alternative routes for Illinois to Incheon Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Atlanta to Gimpo Intl flights
Boston to Gimpo Intl flights
George Bush Intcntl to Gimpo Intl flights
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Midway to Incheon Intl flights
Nashville to Incheon Intl flights
Santa Ana to Incheon Intl flights
LaGuardia to Gimpo Intl flights

Top 9 airlines flying from Illinois to Incheon Intl

Discover the top 9 airlines that operate flights from Illinois to Incheon Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$194Average$1,883FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$287Average$1,704FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$639Average$901FlexibilityNo cancel feeOn-time72%
Turkish AirlinesCheapest$849Average$1,076FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$926Average$1,580FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$1,003Average$1,310FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$1,098Average$1,338FlexibilityNo cancel feeOn-time67%
FinnairCheapest$1,110Average$1,375FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,505Average$1,896FlexibilityNo cancel feeOn-time81%

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