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Incheon Intl

$331+ 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ICN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 11, 2025.

Round-trip from

$693
(Kiwi.com)

One-way from

$331
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,298

Good round-trip deal

$852 or less

Good one-way deal

$583 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. 4% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($57 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 11, 2025.

This lol.travel deal was found by Cheapflights users on 9/11. 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 9/11$715
This oojo deal was found by Cheapflights users on 9/11. 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.
Mon 9/294:00 pmORD - ICN
1 stop37h 05mCathay Pacific
Tue 10/2810:05 amICN - ORD
1 stop41h 55mCathay Pacific
Deal found 9/11$728
This oojo deal was found by Cheapflights users on 9/11. 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 stop30h 40mCathay Pacific
Wed 11/127:35 pmICN - ORD
1 stop32h 25mCathay Pacific
Deal found 9/11$730
This oojo deal was found by Cheapflights users on 9/10. 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 10/14:00 pmORD - ICN
1 stop39h 10mCathay Pacific
Tue 10/148:05 pmICN - ORD
1 stop32h 20mCathay Pacific
Deal found 9/10$735
This oojo deal was found by Cheapflights users on 9/10. 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 stop30h 40mCathay Pacific
Tue 11/117:35 pmICN - ORD
1 stop32h 25mCathay Pacific
Deal found 9/10$737
This FlightHub deal was found by Cheapflights users on 9/10. 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.
Mon 11/32:40 pmORD - ICN
1 stop32h 15mCathay Pacific
Tue 11/187:35 pmICN - ORD
1 stop32h 25mCathay Pacific
Deal found 9/10$745
This oojo deal was found by Cheapflights users on 9/10. 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 9/174:00 pmORD - ICN
1 stop37h 05mCathay Pacific
Wed 10/151:40 pmICN - ORD
1 stop38h 45mCathay Pacific
Deal found 9/10$752
This FlightHub deal was found by Cheapflights users on 9/10. 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 stop30h 40mCathay Pacific
Tue 10/143:10 pmICN - ORD
1 stop37h 15mCathay Pacific
Deal found 9/10$760
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Fri 10/175:30 pmORD - ICN
1 stop36h 10mWestJet
Sat 10/258:45 pmICN - ORD
1 stop30h 50mWestJet
Deal found 9/10$761
This Mytrip deal was found by Cheapflights users on 9/11. 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 10/224:00 pmORD - ICN
1 stop32h 05mCathay Pacific
Wed 11/51:50 pmICN - ORD
1 stop38h 10mCathay Pacific
Deal found 9/11$763
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/267:25 amORD - ICN
1 stop42h 45mMultiple Airlines
Mon 11/108:35 pmICN - ORD
1 stop24h 47mMultiple Airlines
Deal found 9/11$764
This Cathay Pacific deal was found by Cheapflights users on 9/10. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:40 pmORD - ICN
1 stop32h 15mCathay Pacific
Tue 11/187:35 pmICN - ORD
1 stop32h 25mCathay Pacific
Deal found 9/10$765

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 11, 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

MDW - ICN

MDWICN

Chicago Midway

Thu 10/16

5:56 pm-4:55 am

1 stop20h 59m

Incheon Intl

Mon 10/20

8:45 pm-1:38 pm

2 stops30h 53m

$838

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 10/13

12:38 pm-4:50 am

2 stops26h 12m

Incheon Intl

Mon 10/20

6:20 pm-12:03 am

1 stop19h 43m

$854

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 10/24

5:20 am-3:30 pm

1 stop20h 10m

Incheon Intl

Sat 11/1

5:55 pm-8:53 pm

1 stop16h 58m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sun 10/26

6:40 am-4:50 pm

1 stop20h 10m

Incheon Intl

Sun 11/2

7:40 pm-12:24 am

1 stop19h 44m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sun 10/26

7:00 am-6:35 pm

1 stop21h 35m

Incheon Intl

Sun 11/2

8:35 pm-11:59 pm

1 stop18h 24m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 9/27

6:00 am-5:20 pm

1 stop21h 20m

Incheon Intl

Sun 10/26

6:00 pm-11:41 pm

1 stop19h 41m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 10/25

5:20 am-3:55 pm

1 stop20h 35m

Incheon Intl

Sat 11/1

5:55 pm-8:53 pm

1 stop16h 58m

$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

Fri 10/24

6:50 am-3:20 pm

1 stop18h 30m

Incheon Intl

Sun 11/2

7:25 pm-9:38 pm

1 stop17h 13m

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 11/10

1:35 pm-5:40 am

2 stops25h 05m

Incheon Intl

Thu 11/27

12:45 pm-3:46 pm

2 stops42h 01m

$858

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 59 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 11, 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 11, 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 American Airlines, Delta, and Alaska Airlines fly from Illinois to Incheon Intl Airport in about 20h 10m. The time it takes to get you to your destination can typically vary by up to 1h 25m. 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 Alaska Airlines, which is currently one of the cheapest options available, starting at $433. United Airlines flights start at $448 while deals on Air Canada start at $501 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 (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 $2,059, our data indicates the cheapest price to be $418. The most popular route (Chicago O'Hare Intl - Incheon Intl), is priced around $735.

  • 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
Daejeon

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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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Denver to Incheon Intl flights
Boston to Gimpo Intl flights
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Raleigh to Incheon Intl flights
George Bush Intcntl to Gimpo Intl flights
Salt Lake City to Incheon Intl flights
Tampa to Incheon Intl flights
Atlanta to Gimpo Intl flights
Reagan-National to Gimpo Intl flights
Miami to Incheon Intl flights
San Jose 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$297Average$1,906FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$639Average$909FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$660Average$1,016FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$845Average$1,020FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$848Average$1,041FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$901Average$1,286FlexibilityNo cancel feeOn-time67%
EVA AirCheapest$1,085Average$1,333FlexibilityNo cancel feeOn-time74%
FinnairCheapest$1,110Average$1,375FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,491Average$1,868FlexibilityNo cancel feeOn-time81%

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