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Incheon Intl

$330+ 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ICN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap 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 September 15, 2025.

Round-trip from

$725
(lol.travel)

One-way from

$330
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,238

Good round-trip deal

$847 or less

Good one-way deal

$504 or less
From Illinois to Incheon Intl
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One-way flight from Illinois to Incheon Intl
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Highest demand for flights based on searches. 5% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($64 potential savings vs. average RT price).
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Average for round-trip flights in September 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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Find 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 September 15, 2025.

This eDestinos deal was found by Cheapflights users on 9/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/14:00 pmORD - ICN
1 stop30h 40mCathay Pacific
Tue 10/1410:10 amICN - ORD
1 stop42h 15mCathay Pacific
Deal found 9/13$704
This lol.travel deal was found by Cheapflights users on 9/14. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/294:00 pmORD - ICN
1 stop30h 40mCathay Pacific
Mon 10/138:05 pmICN - ORD
1 stop32h 20mCathay Pacific
Deal found 9/14$725
This eDestinos deal was found by Cheapflights users on 9/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/244:00 pmORD - ICN
1 stop32h 05mCathay Pacific
Tue 9/303:10 pmICN - ORD
1 stop37h 15mCathay Pacific
Deal found 9/13$726
This oojo deal was found by Cheapflights users on 9/13. 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.
Thu 10/234:00 pmORD - ICN
1 stop39h 10mCathay Pacific
Wed 11/123:00 pmICN - ORD
1 stop37h 00mCathay Pacific
Deal found 9/13$730
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/214:00 pmORD - ICN
1 stop30h 40mCathay Pacific
Mon 11/107:35 pmICN - ORD
1 stop32h 25mCathay Pacific
Deal found 9/15$745
This oojo deal was found by Cheapflights users on 9/15. 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.
Thu 9/184:00 pmORD - ICN
1 stop37h 05mCathay Pacific
Mon 10/131:40 pmICN - ORD
1 stop38h 45mCathay Pacific
Deal found 9/15$754
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 11/166:30 amORD - ICN
1 stop42h 40mMultiple Airlines
Sun 11/309:20 pmICN - ORD
2 stops31h 15mMultiple Airlines
Deal found 9/12$758
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/164:00 pmORD - ICN
1 stop37h 05mCathay Pacific
Tue 9/303:10 pmICN - ORD
1 stop37h 15mCathay Pacific
Deal found 9/15$760
This American Airlines deal was found by Cheapflights users on 9/13. 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 10/208:05 pmSTL - ICN
2 stops29h 25mAmerican Airlines
Sun 10/265:55 pmICN - STL
1 stop29h 25mAmerican Airlines
Deal found 9/13$825
This American Airlines deal was found by Cheapflights users on 9/13. 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.
Sat 9/273:59 pmSTL - ICN
1 stop33h 31mAmerican Airlines
Sun 10/265:55 pmICN - STL
1 stop29h 25mAmerican Airlines
Deal found 9/13$844
This American Airlines deal was found by Cheapflights users on 9/13. 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 10/285:53 pmSTL - ICN
2 stops32h 02mAmerican Airlines
Tue 11/47:15 pmICN - STL
2 stops29h 05mAmerican Airlines
Deal found 9/13$849
This Delta deal was found by Cheapflights users on 9/15. 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.
Fri 10/246:50 amSTL - ICN
1 stop18h 30mDelta
Sat 11/17:30 pmICN - STL
1 stop17h 37mDelta
Deal found 9/15$856

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 September 15, 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

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Tue 3/3

2:40 pm-9:15 pm

1 stop39h 35m

Incheon Intl

Thu 3/12

7:35 pm-2:00 pm

1 stop32h 25m

$815

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 10/28

6:05 pm-3:55 pm

1 stop31h 50m

Incheon Intl

Tue 11/4

7:15 pm-9:20 am

2 stops29h 05m

$849

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 10/24

6:00 am-5:20 pm

1 stop21h 20m

Incheon Intl

Sat 11/1

7:30 pm-11:07 pm

1 stop17h 37m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 10/30

5:24 pm-4:40 am

2 stops21h 16m

Incheon Intl

Thu 11/6

12:45 pm-4:27 pm

1 stop18h 42m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 10/2

6:00 am-6:35 pm

1 stop22h 35m

Incheon Intl

Mon 10/13

8:35 pm-12:03 am

1 stop17h 28m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 9/27

6:40 am-4:25 pm

1 stop19h 45m

Incheon Intl

Sun 10/26

7:25 pm-11:41 pm

1 stop18h 16m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 10/29

5:20 am-3:55 pm

1 stop20h 35m

Incheon Intl

Wed 11/5

7:15 pm-10:58 pm

1 stop18h 43m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 10/25

5:15 pm-4:55 am

1 stop21h 40m

Incheon Intl

Sat 11/1

7:30 pm-11:07 pm

1 stop17h 37m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 10/24

6:50 am-3:20 pm

1 stop18h 30m

Incheon Intl

Sun 11/2

7:40 pm-12:24 am

1 stop19h 44m

$856

ChicagoIncheon

MDW - ICN

MDWICN

Chicago Midway

Tue 10/21

5:56 pm-4:55 am

1 stop20h 59m

Incheon Intl

Mon 10/27

9:55 pm-11:25 pm

1 stop39h 30m

$925

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 54 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, February is the cheapest month in which you can book a flight from Illinois to Incheon Intl Airport (average of $990). Flying from Illinois to Incheon Intl Airport in December is currently the most expensive (average of $1,633). 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 September 15, 2025.

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

Weekly flight availability from Illinois to Incheon Intl Airport

Explore weekly flight availability from Illinois to Incheon Intl. 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 September 15, 2025.

The most flights from USIL to ICN 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).

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 Cathay Pacific, American Airlines, and Delta fly from Illinois to Incheon Intl Airport in about 21h 20m. The time it takes to get you to your destination can typically vary by up to 18h 15m. 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 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 (80%), Korean Air (65%) or Atlas Air (8%) 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 $2,035, our data indicates the cheapest price to be $403. The most popular route (Chicago O'Hare Intl - Incheon Intl), is priced around $725.

  • 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, February is the cheapest month in which you can book a flight from Illinois to Incheon Intl Airport (average of $990). Flying from Illinois to Incheon Intl Airport in December is currently the most expensive (average of $1,633). 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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Dallas/Fort Worth to Gimpo Intl flights
George Bush Intcntl to Incheon Intl flights
Dulles Intl to Gimpo Intl flights
O'Hare Intl to Gimpo Intl flights
Philadelphia to Incheon Intl flights
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San Diego to Incheon Intl flights
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George Bush Intcntl to Gimpo Intl flights
Raleigh to Incheon Intl flights
Tampa to Incheon Intl flights
Honolulu to Gimpo Intl flights
Charlotte to Incheon Intl flights
Boston to Gimpo Intl flights
San Jose to Gimpo Intl flights
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$297Average$1,016FlexibilityNo cancel feeOn-time69%
DeltaCheapest$297Average$1,906FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$639Average$897FlexibilityNo cancel feeOn-time72%
Turkish AirlinesCheapest$848Average$1,036FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$901Average$1,288FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$926Average$1,119FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$1,085Average$1,322FlexibilityNo cancel feeOn-time74%
FinnairCheapest$1,110Average$1,375FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,493Average$1,868FlexibilityNo cancel feeOn-time81%

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