HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$232+ Cheap flights from Incheon Intl (ICN) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — ORD
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Incheon Intl to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Incheon Intl to Illinois

Keep the following information in mind while searching for Incheon Intl to Illinois flight deals. Data was last updated April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$232
(Vakatrip)

Popular in

August

Cheapest in

February

Average price

$1,232

Good round-trip deal

$1,227 or less

Good one-way deal

$1,039 or less
Provider with most accurate pricing for Seoul (SEL)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Chicago (CHI) flights.
Search Deals
From Incheon Intl to Illinois
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($307 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from Incheon Intl to Illinois.
Search Deals
Price to beat on a one-way flight from Incheon Intl to Illinois.
Search Deals

Find flight deals from Incheon Intl to Illinois

Cheapest flights from Incheon Intl to Illinois
Explore the most affordable flight options available from Incheon Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Vakatrip deal was found by Cheapflights users on 4/29. 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 Vakatrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/3010:40 amICN - ORD
Nonstop13h 00mKorean Air
Thu 5/112:20 pmORD - ICN
Nonstop14h 30mKorean Air
Deal found 4/29$232
This Mytrip deal was found by Cheapflights users on 4/29. 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 5/68:40 pmICN - ORD
1 stop28h 56mMultiple Airlines
Tue 5/138:37 amORD - ICN
1 stop29h 43mMultiple Airlines
Deal found 4/29$682
This United Airlines deal was found by Cheapflights users on 4/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:00 pmICN - ORD
1 stop28h 26mUnited Airlines
Mon 1/126:00 amORD - ICN
3 stops32h 40mUnited Airlines
Deal found 4/27$761
This Trip.com deal was found by Cheapflights users on 4/28. 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.
Sat 5/32:40 pmICN - STL
2 stops44h 25mMultiple Airlines
Sat 5/108:15 pmSTL - ICN
2 stops42h 05mMultiple Airlines
Deal found 4/28$784
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/105:45 pmICN - ORD
1 stop36h 57mAir Canada
Fri 10/2410:00 amORD - ICN
1 stop17h 30mAir Canada
Deal found 4/29$843
This Trip.com deal was found by Cheapflights users on 4/28. 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.
Sat 5/318:40 pmICN - MDW
2 stops26h 23mMultiple Airlines
Thu 6/266:20 amMDW - ICN
2 stops32h 00mMultiple Airlines
Deal found 4/28$868
This Gotogate deal was found by Cheapflights users on 4/28. 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.
Fri 11/148:10 pmICN - STL
1 stop34h 16mAir Canada
Sat 11/224:15 pmSTL - ICN
2 stops57h 50mAir Canada
Deal found 4/28$946
This Gotogate deal was found by Cheapflights users on 4/29. 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.
Sat 7/512:40 pmICN - ORD
1 stop37h 25mLOT
Sun 8/249:40 pmORD - ICN
1 stop42h 45mLOT
Deal found 4/29$949
This WhyPayMore deal was found by Cheapflights users on 4/28. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2312:00 pmICN - ORD
1 stop23h 00mEVA Air
Sun 7/1312:30 amORD - ICN
1 stop20h 30mEVA Air
Deal found 4/28$956
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/294:50 pmICN - STL
2 stops31h 12mUnited Airlines
Tue 9/308:25 amSTL - ICN
2 stops29h 55mUnited Airlines
Deal found 4/28$1,096
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:40 pmICN - MDW
1 stop32h 29mDelta
Thu 10/169:20 amMDW - ICN
1 stop18h 00mDelta
Deal found 4/29$1,180
This Korean Air deal was found by Cheapflights users on 4/28. 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 5/2010:15 amICN - MDW
1 stop16h 13mKorean Air
Mon 5/269:20 amMDW - ICN
1 stop18h 00mKorean Air
Deal found 4/28$1,298

Cheapflights Fare Finder

Customize your flight search to find flights from Incheon Intl to Illinois 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 April 29, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to Illinois that are best for you.

Fly from

Incheon Intl

Fly to

Illinois

Route

Depart

Return

Price

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Sat 5/10

10:40 am-9:40 am

Nonstop13h 00m

Chicago O'Hare Intl

Sat 5/17

12:20 pm-4:50 pm

Nonstop14h 30m

$232

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Sat 5/31

2:40 pm-11:05 pm

1 stop22h 25m

Chicago O'Hare Intl

Thu 6/26

6:10 am-4:20 am

1 stop32h 10m

$685

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Mon 9/15

4:50 pm-8:03 pm

1 stop17h 13m

Chicago O'Hare Intl

Wed 10/1

2:30 pm-4:20 am

1 stop23h 50m

$790

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 10/10

5:45 pm-4:42 pm

1 stop36h 57m

Chicago O'Hare Intl

Fri 10/24

10:00 am-5:30 pm

1 stop17h 30m

$843

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/26

4:40 pm-12:04 am

1 stop21h 24m

Lambert-St Louis

Tue 6/17

6:41 am-4:40 pm

1 stop19h 59m

$858

IncheonChicago

ICN - MDW

ICNMDW

Incheon Intl

Sat 5/31

8:40 pm-9:03 am

2 stops26h 23m

Chicago Midway

Thu 6/26

6:20 am-4:20 am

2 stops32h 00m

$868

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Sat 7/5

12:40 pm-12:05 pm

1 stop37h 25m

Chicago O'Hare Intl

Sun 8/24

9:40 pm-6:25 am

1 stop42h 45m

$949

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 5/23

12:00 pm-9:00 pm

1 stop23h 00m

Chicago O'Hare Intl

Sun 7/13

12:30 am-11:00 am

1 stop20h 30m

$956

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 5/13

7:05 pm-12:36 pm

1 stop31h 31m

Lambert-St Louis

Mon 7/28

1:30 pm-4:15 pm

1 stop36h 45m

$1,073

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 8/29

4:50 pm-10:02 am

2 stops31h 12m

Lambert-St Louis

Tue 9/30

8:25 am-4:20 am

2 stops29h 55m

$1,096

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 37 results
1
2
3
4

Best time to book a flight from Incheon Intl to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Incheon Intl Airport to Illinois (average of $245). Flying from Incheon Intl Airport to Illinois in March is currently the most expensive (average of $321). 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 ICN to IL?

Find hourly flight availability from Incheon Intl to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

When flying from Incheon Intl Airport to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Incheon Intl Airport to Illinois

Explore weekly flight availability from Incheon Intl to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 29, 2025.

The most flights from ICN to USIL are scheduled on a Monday (2 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated April 29, 2025.
Peruse reviews from past customers who have flown with EVA Air, Korean Air and Singapore Airlines from Seoul to Illinois to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Korean Air
8.4
Very good
1,066 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Singapore Airlines
8.1
Very good
1,292 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Delta
8.0
Very good
7,936 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Alaska Airlines
8.0
Very good
9,961 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Related info for your journey

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

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $473. However, be on the lookout for offers from American Airlines and EVA Air, as they are both options that can get you from Incheon Intl Airport to Illinois for a low price.

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

    While some choose either Incheon Intl - Chicago Midway or Incheon Intl - Lambert-St Louis, Incheon Intl - Chicago O'Hare Intl is the most popular route from Incheon Intl Airport to Illinois.

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

    The cheapest flight price from Incheon Intl Airport to Illinois is $637. On average you can expect to pay $1,149. The most popular route, (Incheon Intl - Chicago O'Hare Intl), can usually be booked for $649.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Incheon Intl to Illinois 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 Incheon Intl Airport to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Incheon Intl Airport to Illinois (average of $245). Flying from Incheon Intl Airport to Illinois in March is currently the most expensive (average of $321). 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

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 Incheon Intl to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to John F Kennedy Intl flights
Incheon Intl to Los Angeles flights
Incheon Intl to Newark flights
Incheon Intl to LaGuardia flights
Incheon Intl to Seattle flights
Incheon Intl to Honolulu flights
Incheon Intl to Dulles Intl flights
Incheon Intl to Dallas/Fort Worth flights
Incheon Intl to San Francisco flights
Gimpo Intl to John F Kennedy Intl flights
Incheon Intl to O'Hare Intl flights
Gimpo Intl to Los Angeles flights
Incheon Intl to Atlanta flights
Gimpo Intl to Honolulu flights
Gimpo Intl to San Francisco flights
Incheon Intl to Boston flights
Incheon Intl to Ontario flights
Incheon Intl to Las Vegas flights
Incheon Intl to San Jose flights
Gimpo Intl to Newark flights
Incheon Intl to Detroit flights
Incheon Intl to Reagan-National flights
Incheon Intl to Baltimore flights
Incheon Intl to Santa Ana flights
Incheon Intl to Minneapolis flights
Gimpo Intl to O'Hare Intl flights
Incheon Intl to Oakland flights
Incheon Intl to Love Field flights
Incheon Intl to Burbank flights
Incheon Intl to Midway flights
Incheon Intl to Orlando flights
Incheon Intl to Raleigh flights
Incheon Intl to Denver flights
Incheon Intl to Austin flights
Incheon Intl to Tampa flights
Incheon Intl to Portland flights
Gimpo Intl to Boston flights
Gimpo Intl to Baltimore flights
Incheon Intl to Salt Lake City flights
Gimpo Intl to Atlanta flights
Incheon Intl to Nashville flights
Incheon Intl to Charlotte flights
Incheon Intl to Sky Harbor Intl flights
Incheon Intl to Hobby flights

Top 6 airlines flying from Incheon Intl to Illinois

Discover the top 6 airlines that operate flights from Incheon Intl to Illinois. 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$383Average$1,434FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$697Average$968FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$730Average$1,062FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$959Average$1,590FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$1,047Average$1,249FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,153Average$1,353FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.