HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Incheon Intl

$398+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ICN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Incheon Intl 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 Illinois to Incheon Intl

Keep the following information in mind while searching for Illinois to Incheon Intl flight deals. Data was last updated July 3, 2025.

Round-trip from

$760
(oojo)

One-way from

$398
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,697

Good round-trip deal

$832 or less

Good one-way deal

$446 or less
From Illinois to Incheon Intl
Search Deals
One-way flight from Illinois to Incheon Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Incheon Intl.
Search Deals
Price to beat on a one-way flight from Illinois to Incheon Intl.
Search Deals

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 July 3, 2025.

This oojo deal was found by Cheapflights users on 7/3. 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 9/84:00 pmORD - ICN
1 stop39h 10mCathay Pacific
Mon 9/228:05 pmICN - ORD
1 stop32h 20mCathay Pacific
Deal found 7/3$760
This American Airlines deal was found by Cheapflights users on 7/3. 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 9/17:59 pmSTL - ICN
2 stops29h 31mAmerican Airlines
Sat 9/205:25 pmICN - STL
1 stop16h 50mAmerican Airlines
Deal found 7/3$847
This United Airlines deal was found by Cheapflights users on 7/3. 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 9/15:15 amSTL - ICN
2 stops19h 45mUnited Airlines
Sat 9/2011:30 amICN - STL
2 stops23h 16mUnited Airlines
Deal found 7/3$857
This Delta deal was found by Cheapflights users on 7/2. 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.
Mon 9/16:00 amSTL - ICN
2 stops20h 30mDelta
Sat 9/2010:15 amICN - STL
2 stops22h 50mDelta
Deal found 7/2$861
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 7/305:30 pmORD - ICN
2 stops38h 05mMultiple Airlines
Fri 8/2912:45 pmICN - ORD
1 stop19h 29mMultiple Airlines
Deal found 7/2$923
This FlightHub deal was found by Cheapflights users on 7/2. 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 8/57:50 pmORD - ICN
1 stop31h 50mTurkish Airlines
Wed 8/2710:20 amICN - ORD
1 stop45h 35mTurkish Airlines
Deal found 7/2$1,015
This CrystalTravel deal was found by Cheapflights users on 7/2. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2512:30 amORD - ICN
1 stop21h 55mEVA Air
Wed 9/2412:00 pmICN - ORD
1 stop22h 45mEVA Air
Deal found 7/2$1,059
This Air Canada deal was found by Cheapflights users on 7/2. 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.
Wed 7/164:00 pmSTL - ICN
2 stops34h 05mAir Canada
Mon 10/137:05 pmICN - STL
1 stop38h 33mAir Canada
Deal found 7/2$1,102
This American Airlines deal was found by Cheapflights users on 7/2. 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 9/16:20 amMLI - ICN
1 stop19h 10mAmerican Airlines
Sat 9/135:25 pmICN - MLI
1 stop18h 07mAmerican Airlines
Deal found 7/2$1,113
This Travelocity deal was found by Cheapflights users on 7/1. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/94:00 pmSTL - ICN
1 stop35h 30mMultiple Airlines
Mon 7/1410:35 amICN - STL
2 stops24h 15mMultiple Airlines
Deal found 7/1$1,125
This Delta deal was found by Cheapflights users on 7/3. 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 7/35:27 pmMLI - ICN
2 stops32h 58mDelta
Thu 7/106:50 pmICN - MLI
1 stop17h 29mDelta
Deal found 7/3$1,520
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Thu 7/39:05 amMLI - ICN
2 stops29h 15mUnited Airlines
Thu 7/1011:30 amICN - MLI
2 stops19h 13mUnited Airlines
Deal found 7/3$1,599

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 July 3, 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

Mon 9/8

4:00 pm-9:10 pm

1 stop39h 10m

Incheon Intl

Mon 9/22

8:05 pm-2:25 pm

1 stop32h 20m

$760

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 9/1

7:59 pm-3:30 pm

2 stops29h 31m

Incheon Intl

Sat 9/20

5:25 pm-8:15 pm

1 stop16h 50m

$847

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 9/1

5:15 am-3:00 pm

2 stops19h 45m

Incheon Intl

Sat 9/20

11:30 am-8:46 pm

2 stops23h 16m

$857

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 9/1

6:00 am-4:30 pm

2 stops20h 30m

Incheon Intl

Sat 9/20

10:15 am-7:05 pm

2 stops22h 50m

$861

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Wed 7/30

5:30 pm-9:35 pm

2 stops38h 05m

Incheon Intl

Fri 8/29

12:45 pm-6:14 pm

1 stop19h 29m

$923

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Tue 8/5

7:50 pm-5:40 pm

1 stop31h 50m

Incheon Intl

Wed 8/27

10:20 am-5:55 pm

1 stop45h 35m

$1,015

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Mon 8/25

12:30 am-12:25 pm

1 stop21h 55m

Incheon Intl

Wed 9/24

12:00 pm-8:45 pm

1 stop22h 45m

$1,059

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 7/16

4:00 pm-4:05 pm

2 stops34h 05m

Incheon Intl

Mon 10/13

7:05 pm-7:38 pm

1 stop38h 33m

$1,102

MolineIncheon

MLI - ICN

MLIICN

Moline Quad-City

Mon 9/1

6:20 am-3:30 pm

1 stop19h 10m

Incheon Intl

Sat 9/13

5:25 pm-9:32 pm

1 stop18h 07m

$1,113

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 7/15

6:41 am-5:55 pm

1 stop21h 14m

Incheon Intl

Fri 7/18

8:55 pm-4:54 am

1 stop21h 59m

$1,198

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 31 results
1
2
3
4

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 $998). Flying from Illinois to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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 July 3, 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 July 3, 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).

Reviews of airlines servicing Incheon Intl

Get insights into the airlines that provide service to Incheon Intl. 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 Incheon Intl. Reviews last updated July 3, 2025.
Peruse reviews from past customers who have flown with Korean Air, Delta, and Cathay Pacific from Illinois to Incheon Intl Airport to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,101 reviews

Overall

8.4

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,101 reviews
Korean Air
8.4
Very good
1,101 reviews

Overall

8.4

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,982 reviews
Korean Air
8.4
Very good
1,101 reviews

Overall

8.4

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Cathay Pacific
7.6
Good
921 reviews
Korean Air
8.4
Very good
1,101 reviews

Overall

8.4

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air France
7.5
Good
1,465 reviews
Korean Air
8.4
Very good
1,101 reviews

Overall

8.4

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Qatar Airways
7.4
Good
3,594 reviews
Korean Air
8.4
Very good
1,101 reviews

Overall

8.4

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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.

  • 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 $398. Delta flights start at $481 while deals on American Airlines start at $487 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 (82%), Korean Air (73%) or Atlas Air (17%) 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 $2,507, our data indicates the cheapest price to be $399. The most popular route (Chicago O'Hare Intl - Incheon Intl), is priced around $759.

  • 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 $998). Flying from Illinois to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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 Illinois?

Book flights to Illinois if you plan to visit one of these locations
Suwon
Seongnam
Daejeon

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 Illinois to Incheon Intl

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

Top 10 airlines flying from Illinois to Incheon Intl

Discover the top 10 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$660Average$1,016FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$805Average$937FlexibilityNo cancel feeOn-time72%
Turkish AirlinesCheapest$848Average$1,039FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$891Average$1,302FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$895Average$1,026FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$1,079Average$1,306FlexibilityNo cancel feeOn-time74%
FinnairCheapest$1,110Average$1,402FlexibilityNo cancel feeOn-time76%
Asiana AirlinesCheapest$1,271Average$1,405FlexibilityNo cancel feeOn-time76%
DeltaCheapest$1,271Average$1,887FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,517Average$1,854FlexibilityNo 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.