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$232+ Cheap flights from South Korea to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — ORD
may. 5 — may. 121
lun. 5/5
lun. 5/12
1 adult, Economy
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Cheap flight deals from South Korea to Illinois

Keep the following information in mind while searching for South Korea to Illinois flight deals. Data was last updated abril 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$232
(Vakatrip)

Popular in

August

Cheapest in

February

Average price

$1,232

Good round-trip deal

$1,227 or less

Good one-way deal

$1,039 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 South Korea to Illinois
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($307 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from South Korea to Illinois.
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Price to beat on a one-way flight from South Korea to Illinois.
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Find flight deals from South Korea to Illinois

Cheapest flights from South Korea to Illinois
Explore the most affordable flight options available from South Korea to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 30, 2025.

This Vakatrip deal was found by Cheapflights users on 4/29. 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 Vakatrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/3010:40 amICN - ORD
Nonstop13h 00mKorean Air
jue. 5/112:20 pmORD - ICN
Nonstop14h 30mKorean Air
Deal found 4/29$232
This Mytrip deal was found by Cheapflights users on 4/29. 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.
mar. 5/68:40 pmICN - ORD
1 stop28h 56mMultiple Airlines
mar. 5/138:37 amORD - ICN
1 stop29h 43mMultiple Airlines
Deal found 4/29$682
This United Airlines deal was found by Cheapflights users on 4/27. 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.
mar. 12/236:00 pmICN - ORD
1 stop28h 26mUnited Airlines
lun. 1/126:00 amORD - ICN
3 stops32h 40mUnited Airlines
Deal found 4/27$761
This Trip.com deal was found by Cheapflights users on 4/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/32:40 pmICN - STL
2 stops44h 25mMultiple Airlines
sáb. 5/108:15 pmSTL - ICN
2 stops42h 05mMultiple Airlines
Deal found 4/28$784
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/105:45 pmICN - ORD
1 stop36h 57mAir Canada
vie. 10/2410:00 amORD - ICN
1 stop17h 30mAir Canada
Deal found 4/29$843
This Trip.com deal was found by Cheapflights users on 4/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/318:40 pmICN - MDW
2 stops26h 23mMultiple Airlines
jue. 6/266:20 amMDW - ICN
2 stops32h 00mMultiple Airlines
Deal found 4/28$868
This Gotogate deal was found by Cheapflights users on 4/28. 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.
vie. 11/148:10 pmICN - STL
1 stop34h 16mAir Canada
sáb. 11/224:15 pmSTL - ICN
2 stops57h 50mAir Canada
Deal found 4/28$946
This Gotogate deal was found by Cheapflights users on 4/29. 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.
sáb. 7/512:40 pmICN - ORD
1 stop37h 25mLOT
dom. 8/249:40 pmORD - ICN
1 stop42h 45mLOT
Deal found 4/29$949
This WhyPayMore deal was found by Cheapflights users on 4/28. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/2312:00 pmICN - ORD
1 stop23h 00mEVA Air
dom. 7/1312:30 amORD - ICN
1 stop20h 30mEVA Air
Deal found 4/28$956
This Gotogate deal was found by Cheapflights users on 4/29. 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.
sáb. 11/11:50 pmGMP - ORD
1 stop20h 45mEVA Air
dom. 11/911:30 pmORD - GMP
1 stop27h 30mEVA Air
Deal found 4/29$992
This Gotogate deal was found by Cheapflights users on 4/29. 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.
lun. 10/207:55 pmGMP - ORD
1 stop26h 45mANA
vie. 11/284:25 pmORD - GMP
1 stop27h 55mANA
Deal found 4/29$1,039
This United Airlines deal was found by Cheapflights users on 4/28. 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.
vie. 8/294:50 pmICN - STL
2 stops31h 12mUnited Airlines
mar. 9/308:25 amSTL - ICN
2 stops29h 55mUnited Airlines
Deal found 4/28$1,096

Cheapflights Fare Finder

Customize your flight search to find flights from South Korea 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 2,558,603 searches. Data last updated abril 30, 2025.
Use the filters below to find and compare flights from South Korea to Illinois that are best for you.

Fly from

South Korea

Fly to

Illinois

Route

Depart

Return

Price

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

sáb. 5/31

2:40 pm-11:05 pm

1 stop22h 25m

Chicago O'Hare Intl

jue. 6/26

6:10 am-4:20 am

1 stop32h 10m

$685

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

lun. 9/15

4:50 pm-8:03 pm

1 stop17h 13m

Chicago O'Hare Intl

mié. 10/1

2:30 pm-4:20 am

1 stop23h 50m

$790

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

vie. 10/10

5:45 pm-4:42 pm

1 stop36h 57m

Chicago O'Hare Intl

vie. 10/24

10:00 am-5:30 pm

1 stop17h 30m

$843

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

lun. 5/26

4:40 pm-12:04 am

1 stop21h 24m

Lambert-St Louis

mar. 6/17

6:41 am-4:40 pm

1 stop19h 59m

$858

IncheonChicago

ICN - MDW

ICNMDW

Incheon Intl

sáb. 5/31

8:40 pm-9:03 am

2 stops26h 23m

Chicago Midway

jue. 6/26

6:20 am-4:20 am

2 stops32h 00m

$868

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

sáb. 7/5

12:40 pm-12:05 pm

1 stop37h 25m

Chicago O'Hare Intl

dom. 8/24

9:40 pm-6:25 am

1 stop42h 45m

$949

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

vie. 5/23

12:00 pm-9:00 pm

1 stop23h 00m

Chicago O'Hare Intl

dom. 7/13

12:30 am-11:00 am

1 stop20h 30m

$956

SeoulChicago

GMP - ORD

GMPORD

Seoul Gimpo Intl

lun. 10/20

7:55 pm-8:40 am

1 stop26h 45m

Chicago O'Hare Intl

vie. 11/28

4:25 pm-11:20 am

1 stop27h 55m

$1,039

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

mar. 5/13

7:05 pm-12:36 pm

1 stop31h 31m

Lambert-St Louis

lun. 7/28

1:30 pm-4:15 pm

1 stop36h 45m

$1,073

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

vie. 8/29

4:50 pm-10:02 am

2 stops31h 12m

Lambert-St Louis

mar. 9/30

8:25 am-4:20 am

2 stops29h 55m

$1,096

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 60 results
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Best time to book a flight from South Korea to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from South Korea 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 South Korea to Illinois

What is the cheapest month to book a flight from South Korea to Illinois?

Currently, August is the cheapest month in which you can book a flight from South Korea to Illinois (average of $245). Flying from South Korea to Illinois in March is currently the most expensive (average of $321). 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 KR to IL?

Find hourly flight availability from South Korea 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 abril 30, 2025.

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

Weekly flight availability from South Korea to Illinois

Explore weekly flight availability from South Korea 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 abril 30, 2025.

The most flights from KR0 to USIL are scheduled on a Monday (2 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 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 abril 30, 2025.
Read through reviews of airlines operating flights from South Korea to Illinois, such as EVA Air, Korean Air and Japan Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Korean Air
8.4
Very good
1,066 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Japan Airlines
8.3
Very good
1,459 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
ANA
8.3
Very good
852 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Asiana Airlines
8.2
Very good
442 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Related info for your journey

Find useful and relevant information for your journey from South Korea 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 South Korea to Illinois one-way?

    $473 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on EVA Air and Japan Airlines, with prices starting from $602 and $825, respectively.

  • Can I find deals for flights from South Korea to Illinois that include hotel bookings?

    Yes. In addition to deals on South Korea to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from South Korea to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from South Korea to Illinois.

  • Can I find deals for business class flights from South Korea to Illinois?

    Yes. Cheapflights offers flight deals from South Korea 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 South Korea to Illinois?

    Currently, August is the cheapest month in which you can book a flight from South Korea to Illinois (average of $245). Flying from South Korea to Illinois in March is currently the most expensive (average of $321). 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

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Alternative routes for South Korea to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from South Korea to Illinois

Discover the top 6 airlines that operate flights from South Korea 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 2,558,603 searches. Data last updated abril 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$383Average$1,434FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$697Average$968FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$730Average$1,062FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$959Average$1,590FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$1,047Average$1,249FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,153Average$1,353FlexibilityNo cancel feeOn-time81%

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