How long is the flight from Incheon Intl Airport to Illinois?

Departing from Incheon Intl Airport to Illinois will take you 18h 40m. The distance from Incheon Intl Airport to Illinois is about 6670 mi. This flight may include one or multiple stops.

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.

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).

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 $1,104. On average you can expect to pay $1,973. The most popular route, (Incheon Intl - Chicago O'Hare Intl), can usually be booked for $564.

What are the most popular airlines that fly from Incheon Intl Airport to Illinois?

When booking a flight from Incheon Intl Airport to Illinois, you may want to consider flying on Korean Air, Delta or Air Canada as they are the most popular for this route.

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.

$395+ Cheap Flights from Incheon Intl Airport to Illinois

Q: How much does it cost to fly round-trip from Incheon Intl Airport to Illinois?

Airfare is below average for this route at the moment. Incheon Intl Airport to Illinois flights typically cost between $1,122 and $1,787 in November. The cheapest round-trip price found within the last 3 days was $582 on American Airlines (Nov 7-Nov 10).

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Cheap flight deals from Incheon Intl to Illinois

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$582 (American Airlines)
One-way from	$395 (Kiwi.com)
Popular in	January
Cheapest in	November
Average price	$894
Good round-trip deal	$1,273 or less
Good one-way deal	$1,109 or less

Provider with most accurate pricing for Seoul (SEL)-Chicago (CHI) flight deals.

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Provider most trusted by Cheapflights users for Seoul (SEL)-Chicago (CHI) flights.

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From Incheon Intl to Illinois

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One-way flight from Incheon Intl to Illinois

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Highest demand for flights based on searches. 2% potential increase in price ($24 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).

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Average for round-trip flights in October 2025

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Price to beat on a round-trip flight from Incheon Intl to Illinois.

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Price to beat on a one-way flight from Incheon Intl to Illinois.

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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 October 16, 2025.

Wed 11/57:15 pmICN - ORD

1 stop18h 05mAmerican Airlines

Sun 11/910:58 pmORD - ICN

2 stops26h 47mAmerican Airlines

Deal found 10/14

$575

Fri 11/77:15 pmICN - ORD

1 stop28h 29mAmerican Airlines

Mon 11/1010:00 pmORD - ICN

2 stops27h 45mAmerican Airlines

Deal found 10/16

$582

Tue 11/1812:45 pmICN - ORD

2 stops19h 13mUnited Airlines

Wed 12/310:45 amORD - ICN

1 stop27h 55mUnited Airlines

Deal found 10/15

$590

Mon 11/312:45 pmICN - ORD

2 stops36h 17mUnited Airlines

Sun 11/97:10 amORD - ICN

2 stops42h 05mUnited Airlines

Deal found 10/14

$591

Mon 11/36:00 pmICN - ORD

1 stop26h 00mUnited Airlines

Mon 11/246:15 amORD - ICN

1 stop19h 00mUnited Airlines

Deal found 10/16

$593

Fri 11/77:15 pmICN - ORD

1 stop28h 29mAmerican Airlines

Sat 11/1510:05 pmORD - ICN

1 stop27h 40mAmerican Airlines

Deal found 10/14

$597

Thu 11/137:15 pmICN - ORD

2 stops27h 10mAmerican Airlines

Sat 11/226:38 pmORD - ICN

2 stops31h 07mAmerican Airlines

Deal found 10/14

$598

Wed 10/224:50 pmICN - ORD

3 stops31h 12mUnited Airlines

Sun 10/266:15 amORD - ICN

1 stop18h 55mUnited Airlines

Deal found 10/15

$601

Wed 10/1511:30 amICN - ORD

1 stop19h 38mUnited Airlines

Wed 11/122:40 pmORD - ICN

2 stops24h 00mUnited Airlines

Deal found 10/14

$603

Tue 12/167:15 pmICN - MLI

2 stops34h 48mAmerican Airlines

Wed 12/316:20 amMLI - ICN

1 stop19h 25mAmerican Airlines

Deal found 10/15

$616

Thu 11/208:05 pmICN - STL

2 stops19h 41mDelta

Wed 12/35:34 pmSTL - ICN

2 stops31h 56mDelta

Deal found 10/16

$624

Sun 11/2312:45 pmICN - ORD

1 stop17h 05mUnited Airlines

Wed 12/31:05 pmORD - ICN

2 stops25h 35mUnited Airlines

Deal found 10/15

$625

Best flights from Incheon Intl to Illinois
Discover carefully curated flight deals from Incheon Intl to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 16, 2025.

Fri 2/66:00 pmICN - MLI

2 stops31h 12mUnited Airlines

Tue 2/108:46 amMLI - ICN

2 stops29h 54mUnited Airlines

Deal found 10/14

$590

Tue 12/167:15 pmICN - MLI

2 stops34h 48mAmerican Airlines

Wed 12/316:20 amMLI - ICN

1 stop19h 25mAmerican Airlines

Deal found 10/15

$616

Tue 2/177:30 pmICN - STL

1 stop18h 40mDelta

Sun 3/226:30 amSTL - ICN

2 stops20h 00mDelta

Deal found 10/15

$621

Tue 11/49:55 pmICN - MDW

1 stop17h 00mMultiple Airlines

Thu 11/1312:30 pmMDW - ICN

2 stops49h 40mMultiple Airlines

Deal found 10/14

$803

Thu 12/116:00 pmICN - ORD

1 stop27h 02mUnited Airlines

Thu 1/86:47 amORD - ICN

1 stop18h 28mUnited Airlines

Deal found 10/15

$590

Wed 2/187:30 pmICN - STL

1 stop18h 40mDelta

Tue 3/176:30 amSTL - ICN

1 stop19h 00mDelta

Deal found 10/15

$621

Thu 11/207:15 pmICN - STL

1 stop18h 19mAmerican Airlines

Wed 12/37:00 amSTL - ICN

1 stop18h 45mAmerican Airlines

Deal found 10/16

$627

Tue 11/46:00 pmICN - ORD

1 stop20h 10mUnited Airlines

Wed 11/126:15 amORD - ICN

1 stop19h 00mUnited Airlines

Deal found 10/14

$590

Wed 2/187:30 pmICN - STL

1 stop28h 24mDelta

Mon 3/236:30 amSTL - ICN

2 stops20h 00mDelta

Deal found 10/15

$621

Tue 11/186:00 pmICN - ORD

1 stop16h 40mUnited Airlines

Fri 11/286:15 amORD - ICN

1 stop19h 00mUnited Airlines

Deal found 10/15

$590

Tue 2/177:40 pmICN - STL

1 stop17h 02mDelta

Tue 3/176:30 amSTL - ICN

1 stop19h 00mDelta

Deal found 10/15

$621

Fri 11/712:45 pmICN - ORD

2 stops26h 30mUnited Airlines

Mon 11/102:39 pmORD - ICN

2 stops24h 01mUnited Airlines

Deal found 10/14

$591

Fri 4/36:50 pmICN - CMI

2 stops40h 37mQatar Airways

Sun 4/51:16 pmCMI - ICN

2 stops37h 49mQatar Airways

Deal found 10/14

$1,591

Thu 11/207:30 pmICN - STL

1 stop31h 29mDelta

Wed 12/36:00 amSTL - ICN

2 stops19h 30mDelta

Deal found 10/16

$624

Mon 10/275:05 pmICN - ORD

2 stops21h 10mUnited Airlines

Mon 11/242:21 pmORD - ICN

2 stops24h 19mUnited Airlines

Deal found 10/16

$593

Tue 11/49:55 pmICN - MDW

1 stop17h 00mMultiple Airlines

Wed 11/263:47 pmMDW - ICN

2 stops38h 48mMultiple Airlines

Deal found 10/16

$901

Mon 2/212:45 pmICN - ORD

1 stop17h 08mUnited Airlines

Fri 2/136:35 amORD - ICN

1 stop18h 40mUnited Airlines

Deal found 10/16

$593

Sun 10/267:30 pmICN - STL

1 stop17h 37mDelta

Sat 11/85:15 pmSTL - ICN

2 stops31h 15mDelta

Deal found 10/15

$673

Fri 2/66:50 pmICN - MLI

1 stop35h 37mAmerican Airlines

Tue 2/107:31 amMLI - ICN

2 stops42h 14mAmerican Airlines

Deal found 10/14

$939

Sat 11/159:55 pmICN - MDW

1 stop41h 00mMultiple Airlines

Sat 11/229:58 pmMDW - ICN

2 stops51h 22mMultiple Airlines

Deal found 10/16

$994

Wed 11/196:00 pmICN - ORD

2 stops17h 58mUnited Airlines

Sat 11/296:15 amORD - ICN

1 stop19h 00mUnited Airlines

Deal found 10/15

$625

Tue 2/36:00 pmICN - ORD

2 stops18h 15mUnited Airlines

Sat 2/288:20 pmORD - ICN

1 stop28h 55mUnited Airlines

Deal found 10/16

$638

Sun 11/99:55 pmICN - MDW

1 stop17h 00mMultiple Airlines

Tue 11/116:26 pmMDW - ICN

1 stop20h 14mMultiple Airlines

Deal found 10/14

$1,081

Tue 12/1612:45 pmICN - MLI

2 stops23h 24mUnited Airlines

Fri 1/910:47 amMLI - ICN

2 stops27h 53mUnited Airlines

Deal found 10/15

$651

Sun 11/29:55 pmICN - MDW

1 stop17h 00mMultiple Airlines

Thu 11/136:26 pmMDW - ICN

1 stop20h 14mMultiple Airlines

Deal found 10/16

$1,134

Tue 2/1712:45 pmICN - STL

2 stops24h 29mUnited Airlines

Thu 3/195:54 pmSTL - ICN

2 stops20h 46mUnited Airlines

Deal found 10/15

$659

Tue 12/166:00 pmICN - MLI

2 stops18h 09mUnited Airlines

Wed 12/311:00 pmMLI - ICN

2 stops25h 40mUnited Airlines

Deal found 10/15

$672

Thu 11/67:30 pmICN - MDW

1 stop28h 25mDelta

Mon 11/177:02 pmMDW - ICN

1 stop29h 28mDelta

Deal found 10/14

$1,180

Fri 4/35:25 pmICN - CMI

2 stops33h 12mAmerican Airlines

Sun 4/56:54 amCMI - ICN

1 stop18h 36mAmerican Airlines

Deal found 10/16

$1,687

Wed 11/57:30 pmICN - MDW

1 stop28h 25mDelta

Sat 11/157:02 pmMDW - ICN

1 stop29h 28mDelta

Deal found 10/14

$1,180

Last-minute flights from Incheon Intl to Illinois
Discover last-minute flight deals from Incheon Intl to Illinois. Data last updated October 16, 2025 and is based on user searches.

Wed 10/224:50 pmICN - ORD

3 stops31h 12mUnited Airlines

Sun 10/266:15 amORD - ICN

1 stop18h 55mUnited Airlines

Deal found 10/15

$601

Mon 11/312:45 pmICN - ORD

2 stops36h 17mUnited Airlines

Sun 11/97:10 amORD - ICN

2 stops42h 05mUnited Airlines

Deal found 10/14

$591

Mon 11/36:00 pmICN - ORD

1 stop26h 00mUnited Airlines

Mon 11/246:15 amORD - ICN

1 stop19h 00mUnited Airlines

Deal found 10/16

$593

Wed 11/57:15 pmICN - ORD

1 stop18h 05mAmerican Airlines

Sun 11/910:58 pmORD - ICN

2 stops26h 47mAmerican Airlines

Deal found 10/14

$575

Thu 11/68:10 pmICN - ORD

2 stops32h 16mMultiple Airlines

Fri 11/147:34 pmORD - ICN

2 stops31h 51mMultiple Airlines

Deal found 10/14

$629

Fri 11/77:15 pmICN - ORD

1 stop28h 29mAmerican Airlines

Mon 11/1010:08 pmORD - ICN

2 stops27h 37mAmerican Airlines

Deal found 10/16

$582

Fri 11/77:15 pmICN - ORD

1 stop28h 29mAmerican Airlines

Sat 11/1510:05 pmORD - ICN

1 stop27h 40mAmerican Airlines

Deal found 10/14

$597

Thu 11/137:15 pmICN - ORD

2 stops27h 10mAmerican Airlines

Sat 11/226:38 pmORD - ICN

2 stops31h 07mAmerican Airlines

Deal found 10/14

$598

Tue 11/186:00 pmICN - ORD

2 stops20h 59mUnited Airlines

Fri 11/286:15 amORD - ICN

1 stop19h 00mUnited Airlines

Deal found 10/15

$590

Thu 11/208:05 pmICN - STL

2 stops19h 41mDelta

Wed 12/35:34 pmSTL - ICN

2 stops31h 56mDelta

Deal found 10/16

$624

Thu 11/207:15 pmICN - STL

1 stop18h 19mAmerican Airlines

Wed 12/37:00 amSTL - ICN

1 stop18h 45mAmerican Airlines

Deal found 10/16

$627

Sun 11/2312:45 pmICN - ORD

1 stop17h 05mUnited Airlines

Fri 11/287:10 amORD - ICN

1 stop31h 30mUnited Airlines

Deal found 10/15

$625

One-way flights from Incheon Intl to Illinois
Search for one-way flight options from Incheon Intl to Illinois. Find affordable one-way fares based on user searches. Data last updated October 16, 2025.

Sat 11/159:20 pmICN - ORD

3 stops52h 22mMultiple Airlines

Deal found 10/15

$395

Sat 11/229:20 pmICN - ORD

3 stops52h 18mMultiple Airlines

Deal found 10/15

$396

Fri 10/316:55 pmICN - ORD

2 stops42h 34mMultiple Airlines

Deal found 10/16

$398

Tue 12/29:20 pmICN - ORD

3 stops55h 37mMultiple Airlines

Deal found 10/15

$407

Wed 11/197:35 amICN - ORD

2 stops43h 25mMultiple Airlines

Deal found 10/15

$416

Fri 10/316:55 pmICN - MDW

2 stops34h 02mMultiple Airlines

Deal found 10/16

$416

Thu 10/239:30 pmICN - ORD

1 stop29h 15mMultiple Airlines

Deal found 10/15

$421

Sun 11/309:20 pmICN - ORD

3 stops50h 57mMultiple Airlines

Deal found 10/15

$423

Wed 12/31:05 pmICN - ORD

2 stops55h 55mMultiple Airlines

Deal found 10/15

$424

Wed 10/229:30 pmICN - MDW

1 stop39h 55mMultiple Airlines

Deal found 10/16

$427

Thu 11/61:05 pmICN - ORD

2 stops48h 55mMultiple Airlines

Deal found 10/15

$432

Sun 2/19:20 pmICN - MDW

2 stops27h 45mMultiple Airlines

Deal found 10/15

$451

Cheapflights Fare Finder

Use the filters below to find and compare flights from Incheon Intl Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonMoline

ICN - MLI

ICNMLI

Incheon Intl

Fri 2/6

6:00 pm-10:12 am

2 stops31h 12m

Moline Quad-City

Tue 2/10

8:46 am-5:40 am

2 stops29h 54m

$590

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Thu 12/11

6:00 pm-6:02 am

1 stop27h 02m

Chicago O'Hare Intl

Thu 1/8

6:47 am-4:15 pm

1 stop18h 28m

$590

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Tue 11/4

6:00 pm-11:10 pm

1 stop20h 10m

Chicago O'Hare Intl

Wed 11/12

6:15 am-4:15 pm

1 stop19h 00m

$590

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Tue 11/18

6:00 pm-7:40 pm

1 stop16h 40m

Chicago O'Hare Intl

Fri 11/28

6:15 am-4:15 pm

1 stop19h 00m

$590

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 11/7

12:45 pm-12:15 am

2 stops26h 30m

Chicago O'Hare Intl

Mon 11/10

2:39 pm-5:40 am

2 stops24h 01m

$591

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Mon 10/27

5:05 pm-12:15 am

2 stops21h 10m

Chicago O'Hare Intl

Mon 11/24

2:21 pm-5:40 am

2 stops24h 19m

$593

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Mon 2/2

12:45 pm-2:53 pm

1 stop17h 08m

Chicago O'Hare Intl

Fri 2/13

6:35 am-4:15 pm

1 stop18h 40m

$593

IncheonMoline

ICN - MLI

ICNMLI

Incheon Intl

Tue 12/16

7:15 pm-3:03 pm

2 stops34h 48m

Moline Quad-City

Wed 12/31

6:20 am-4:45 pm

1 stop19h 25m

$616

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 2/17

7:30 pm-11:10 pm

1 stop18h 40m

Lambert-St Louis

Sun 3/22

6:30 am-4:30 pm

2 stops20h 00m

$621

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 2/18

7:30 pm-11:10 pm

1 stop18h 40m

Lambert-St Louis

Tue 3/17

6:30 am-3:30 pm

1 stop19h 00m

$621

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 48 results

...

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 $201). Flying from Incheon Intl Airport to Illinois in November is currently the most expensive (average of $1,002). 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?

Unlike in the evening, when flights are generally more expensive, you can save up to 31% on flights from Incheon Intl Airport to Illinois by exploring options for tickets in the afternoon.

Weekly flight availability from Incheon Intl Airport to Illinois

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).

How much does it cost to fly round-trip from Incheon Intl Airport to Illinois?

Reviews of airlines servicing Illinois

See what other customers who have flown with Korean Air, Asiana Airlines, and Delta from Incheon Intl Airport to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very good

1,149 reviews

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Korean Air

8.4

Very good

1,149 reviews

Korean Air

8.4

Very good

1,149 reviews

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Asiana Airlines

8.2

Very good

486 reviews

Korean Air

8.4

Very good

1,149 reviews

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Delta

8.0

Very good

7,982 reviews

Korean Air

8.4

Very good

1,149 reviews

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

American Airlines

7.2

Good

11,040 reviews

Korean Air

8.4

Very good

1,149 reviews

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Air Canada

7.1

Good

10,307 reviews

Korean Air

8.4

Very good

1,149 reviews

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Related info for your journey

How long is the flight from Incheon Intl Airport to Illinois?
Departing from Incheon Intl Airport to Illinois will take you 18h 40m. The distance from Incheon Intl Airport to Illinois is about 6670 mi. This flight may include one or multiple stops.
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 $1,104. On average you can expect to pay $1,973. The most popular route, (Incheon Intl - Chicago O'Hare Intl), can usually be booked for $564.
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 $201). Flying from Incheon Intl Airport to Illinois in November is currently the most expensive (average of $1,002). 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

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Complete your trip

Illinois car rentals

Chicago O'Hare Intl Airport car rentals

Chicago Midway Airport car rentals

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Chicago Greater Rockford Airport car rentals

Champaign University-Willard Airport car rentals

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Belleville Airport car rentals

Marion Williamson County Airport car rentals

Quincy Regional Airport car rentals

Top 4 airlines flying from Incheon Intl to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$229	Average$1,356	FlexibilityNo cancel fee	On-timeN/A
Asiana Airlines	Cheapest$558	Average$1,047	FlexibilityNo cancel fee	On-time76%
Air Canada	Cheapest$730	Average$1,053	FlexibilityNo cancel fee	On-time67%
Korean Air	Cheapest$787	Average$1,381	FlexibilityNo cancel fee	On-time81%

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$395+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.

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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 October 16, 2025.

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Find flight deals from Incheon Intl to Illinois

Cheapest flights from Incheon Intl to IllinoisExplore 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 October 16, 2025.

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 October 16, 2025.

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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.

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?

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 October 16, 2025.

Weekly flight availability from Incheon Intl Airport to Illinois

How much does it cost to fly round-trip from Incheon Intl Airport to Illinois?

Reviews of airlines servicing Illinois

See what other customers who have flown with Korean Air, Asiana Airlines, and Delta from Incheon Intl Airport to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

How long is the flight from Incheon Intl Airport to Illinois?

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

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

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

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

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Alternative routes for Incheon Intl to Illinois

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Top 4 airlines flying from Incheon Intl to Illinois

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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 October 16, 2025.