Illinois

$358+ Cheap flights from Incheon Intl (ICN) to Illinois

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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — ORD
Nov 25 — Dec 21
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

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

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 November 20, 2024.

This United Airlines deal was found by Cheapflights users on 11/19. 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.
Mon 11/2512:45 pmICN - ORD
1 stop19h 10mUnited Airlines
Thu 11/282:00 pmORD - ICN
2 stops35h 15mUnited Airlines
Deal found 11/19$566
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/236:50 pmICN - ORD
1 stop28h 35mAmerican Airlines
Thu 1/235:00 amORD - ICN
1 stop20h 45mAmerican Airlines
Deal found 11/20$769
This Air Canada deal was found by Cheapflights users on 11/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/226:20 pmICN - ORD
1 stop35h 19mAir Canada
Mon 12/23:40 pmORD - ICN
1 stop34h 05mAir Canada
Deal found 11/20$790
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/266:50 pmICN - STL
2 stops28h 53mAmerican Airlines
Tue 12/35:31 pmSTL - ICN
1 stop32h 14mAmerican Airlines
Deal found 11/20$806
This United Airlines deal was found by Cheapflights users on 11/20. 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 11/266:00 pmICN - STL
2 stops20h 30mUnited Airlines
Tue 12/31:39 pmSTL - ICN
2 stops25h 01mUnited Airlines
Deal found 11/20$835
This Mytrip deal was found by Cheapflights users on 11/19. 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.
Fri 12/66:20 pmICN - ORD
2 stops32h 45mMultiple Airlines
Mon 12/93:21 pmORD - ICN
3 stops34h 24mMultiple Airlines
Deal found 11/19$911
This Onlinetour deal was found by Cheapflights users on 11/19. 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 Onlinetour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/62:40 pmICN - ORD
1 stop24h 19mAsiana Airlines
Mon 12/96:00 pmORD - ICN
1 stop32h 30mAsiana Airlines
Deal found 11/19$964
This Delta deal was found by Cheapflights users on 11/19. 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.
Tue 11/198:05 pmICN - MDW
2 stops30h 53mDelta
Sun 2/26:59 pmMDW - ICN
1 stop29h 31mDelta
Deal found 11/19$1,352
This Kiwi.com deal was found by Cheapflights users on 11/19. 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.
Thu 12/56:15 pmICN - STL
1 stop20h 44mMultiple Airlines
Fri 12/137:00 amSTL - ICN
1 stop19h 50mMultiple Airlines
Deal found 11/19$1,353
This Gotogate deal was found by Cheapflights users on 11/19. 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 12/138:10 pmICN - STL
1 stop33h 56mAir Canada
Thu 12/263:50 pmSTL - ICN
1 stop35h 35mAir Canada
Deal found 11/19$1,489
This Kiwi.com deal was found by Cheapflights users on 11/20. 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.
Sun 11/2410:20 amICN - MDW
1 stop16h 36mMultiple Airlines
Fri 11/2910:21 pmMDW - ICN
2 stops30h 04mMultiple Airlines
Deal found 11/20$1,687
This WestJet deal was found by Cheapflights users on 11/19. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/610:20 amICN - MDW
2 stops50h 46mWestJet
Mon 12/912:44 pmMDW - ICN
2 stops49h 01mWestJet
Deal found 11/19$1,986

Find flights from Incheon Intl to Illinois within your budget

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Sat 2/1

12:45 pm-11:01 am

3 stops37h 16m

Chicago O'Hare Intl

Wed 2/5

12:45 pm-5:40 am

2 stops25h 55m

$666

IncheonMoline

ICN - MLI

ICNMLI

Incheon Intl

Fri 1/31

6:50 pm-10:53 am

2 stops31h 03m

Moline Quad-City

Fri 2/28

6:32 pm-4:30 pm

2 stops30h 58m

$708

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Tue 1/28

6:50 pm-9:04 pm

1 stop17h 14m

Chicago O'Hare Intl

Wed 2/5

8:59 pm-4:45 pm

2 stops28h 46m

$764

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Wed 3/5

4:55 pm-2:39 pm

1 stop36h 44m

Chicago O'Hare Intl

Mon 3/10

3:40 pm-3:25 pm

1 stop33h 45m

$790

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Tue 2/4

6:15 pm-11:59 pm

1 stop20h 44m

Chicago O'Hare Intl

Tue 2/11

7:45 am-5:50 pm

1 stop19h 05m

$900

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 12/6

12:45 pm-4:29 pm

2 stops18h 44m

Lambert-St Louis

Sat 12/7

11:05 am-5:40 am

2 stops27h 35m

$913

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Sat 2/15

1:25 pm-8:00 pm

1 stop45h 35m

Chicago O'Hare Intl

Fri 2/21

9:55 pm-7:40 am

1 stop42h 45m

$919

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 12/6

2:40 pm-11:59 pm

1 stop24h 19m

Chicago O'Hare Intl

Mon 12/9

6:00 pm-5:30 pm

1 stop32h 30m

$964

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 3/28

4:55 pm-3:06 pm

2 stops36h 11m

Lambert-St Louis

Fri 4/4

3:50 pm-4:05 pm

2 stops34h 15m

$1,007

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 3/28

5:50 pm-4:08 pm

1 stop36h 18m

Lambert-St Louis

Fri 4/4

5:34 am-3:15 pm

1 stop19h 41m

$1,086

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 46 results
1
2
3
...
5

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.

Travel insights for flights from Incheon Intl to Illinois

Get recent, data-driven insights about flights from Incheon Intl to Illinois including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Incheon Intl Airport to Illinois (average of $232). Flying from Incheon Intl Airport to Illinois in June is currently the most expensive (average of $308). 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 November 20, 2024.

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 November 20, 2024.

The most flights from ICN to USIL are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 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 November 20, 2024.
Peruse reviews from past customers who have flown with American Airlines, United Airlines and Air Canada 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.
8.5
Very good
1,024 reviews

Overall

8.5

Crew

8.7

Comfort

8.3

Boarding

8.5

Entertainment

8.2

Food

8.1

Reviews

1 / 10

The only reason I gave comfort a good and not an excellent is over something Korean Air has no control. I choose an aisle seat so I can easily stand and walk to the lavatory and so I have only one seat mate to contend with. In my case, I had someone who chose to horn in on my space. At its worst, she laid her head on her companion’s lap with her feet close to me. She made sure her feet were covered with her blanket and scrunched up so she wasn’t exactly in my face. That was good enough for me not to complain to the fight attendants.

8.5
Very good
1,024 reviews
8.5
Very good
1,024 reviews

Overall

8.5

Crew

8.7

Comfort

8.3

Boarding

8.5

Entertainment

8.2

Food

8.1

Reviews

1 / 10

The only reason I gave comfort a good and not an excellent is over something Korean Air has no control. I choose an aisle seat so I can easily stand and walk to the lavatory and so I have only one seat mate to contend with. In my case, I had someone who chose to horn in on my space. At its worst, she laid her head on her companion’s lap with her feet close to me. She made sure her feet were covered with her blanket and scrunched up so she wasn’t exactly in my face. That was good enough for me not to complain to the fight attendants.

8.4
Very good
1,308 reviews
8.5
Very good
1,024 reviews

Overall

8.5

Crew

8.7

Comfort

8.3

Boarding

8.5

Entertainment

8.2

Food

8.1

Reviews

1 / 10

The only reason I gave comfort a good and not an excellent is over something Korean Air has no control. I choose an aisle seat so I can easily stand and walk to the lavatory and so I have only one seat mate to contend with. In my case, I had someone who chose to horn in on my space. At its worst, she laid her head on her companion’s lap with her feet close to me. She made sure her feet were covered with her blanket and scrunched up so she wasn’t exactly in my face. That was good enough for me not to complain to the fight attendants.

8.3
Very good
476 reviews
8.5
Very good
1,024 reviews

Overall

8.5

Crew

8.7

Comfort

8.3

Boarding

8.5

Entertainment

8.2

Food

8.1

Reviews

1 / 10

The only reason I gave comfort a good and not an excellent is over something Korean Air has no control. I choose an aisle seat so I can easily stand and walk to the lavatory and so I have only one seat mate to contend with. In my case, I had someone who chose to horn in on my space. At its worst, she laid her head on her companion’s lap with her feet close to me. She made sure her feet were covered with her blanket and scrunched up so she wasn’t exactly in my face. That was good enough for me not to complain to the fight attendants.

8.0
Very good
8,756 reviews
8.5
Very good
1,024 reviews

Overall

8.5

Crew

8.7

Comfort

8.3

Boarding

8.5

Entertainment

8.2

Food

8.1

Reviews

1 / 10

The only reason I gave comfort a good and not an excellent is over something Korean Air has no control. I choose an aisle seat so I can easily stand and walk to the lavatory and so I have only one seat mate to contend with. In my case, I had someone who chose to horn in on my space. At its worst, she laid her head on her companion’s lap with her feet close to me. She made sure her feet were covered with her blanket and scrunched up so she wasn’t exactly in my face. That was good enough for me not to complain to the fight attendants.

7.8
Good
1,350 reviews
8.5
Very good
1,024 reviews

Overall

8.5

Crew

8.7

Comfort

8.3

Boarding

8.5

Entertainment

8.2

Food

8.1

Reviews

1 / 10

The only reason I gave comfort a good and not an excellent is over something Korean Air has no control. I choose an aisle seat so I can easily stand and walk to the lavatory and so I have only one seat mate to contend with. In my case, I had someone who chose to horn in on my space. At its worst, she laid her head on her companion’s lap with her feet close to me. She made sure her feet were covered with her blanket and scrunched up so she wasn’t exactly in my face. That was good enough for me not to complain to the fight attendants.

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 American Airlines, with whom users have recently found tickets for as low as $474. However, be on the lookout for offers from United Airlines and Air Canada, 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?

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

    The cheapest flight price from Incheon Intl Airport to Illinois is $1,103. On average you can expect to pay $2,526. The most popular route, (Incheon Intl - Chicago O'Hare Intl), can usually be booked for $724.

  • 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, September is the cheapest month in which you can book a flight from Incheon Intl Airport to Illinois (average of $232). Flying from Incheon Intl Airport to Illinois in June is currently the most expensive (average of $308). 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.

Top 4 airlines flying from Incheon Intl to Illinois

Discover the top 4 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$697Average$992FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$1,089Average$1,481FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,194Average$1,504FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,314Average$1,652FlexibilityNo cancel feeOn-timeN/A
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.