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$392+ Cheap flights from Illinois to South Korea

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ICN
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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Cheap flight deals from Illinois to South Korea

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to South Korea (KR0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 22, 2024.

Round-trip from

$780
(Ovago)

One-way from

$392
(Kiwi.com)
From Illinois to South Korea
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One-way flight from Illinois to South Korea
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Find flight deals from Illinois to South Korea

Cheapest flights from Illinois to South Korea
Explore the most affordable flight options available from Illinois to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2024.

This Cathay Pacific deal was found by Cheapflights users on 12/20. 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.
Tue 12/312:40 pmORD - ICN
1 stop31h 05mCathay Pacific
Wed 4/308:15 pmICN - ORD
1 stop32h 10mCathay Pacific
Deal found 12/20$1,306
This Turkish Airlines deal was found by Cheapflights users on 12/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3111:55 amORD - ICN
1 stop39h 25mTurkish Airlines
Thu 5/111:20 pmICN - ORD
1 stop24h 30mTurkish Airlines
Deal found 12/20$1,324
This Justfly.com deal was found by Cheapflights users on 12/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2512:56 pmORD - ICN
2 stops35h 19mAir Canada
Fri 1/174:55 pmICN - ORD
1 stop36h 44mAir Canada
Deal found 12/22$1,346
This Mytrip deal was found by Cheapflights users on 12/21. 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.
Tue 12/242:05 pmORD - ICN
3 stops33h 45mMultiple Airlines
Thu 1/308:10 pmICN - ORD
2 stops33h 13mMultiple Airlines
Deal found 12/21$1,548
This Priceline deal was found by Cheapflights users on 12/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/253:50 pmSTL - ICN
2 stops32h 25mMultiple Airlines
Fri 12/277:30 pmICN - STL
1 stop17h 36mMultiple Airlines
Deal found 12/21$1,939
This Korean Air deal was found by Cheapflights users on 12/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3011:05 amORD - ICN
Nonstop15h 10mKorean Air
Mon 4/2810:40 amICN - ORD
Nonstop13h 10mKorean Air
Deal found 12/20$1,962
This Kiwi.com deal was found by Cheapflights users on 12/21. 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.
Tue 12/246:20 amMDW - ICN
1 stop20h 15mMultiple Airlines
Thu 1/301:20 pmICN - MDW
2 stops25h 57mMultiple Airlines
Deal found 12/21$1,997
This United Airlines deal was found by Cheapflights users on 12/21. 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.
Sun 12/2211:10 amSTL - ICN
2 stops38h 05mUnited Airlines
Sun 12/296:00 pmICN - STL
1 stop21h 28mUnited Airlines
Deal found 12/21$2,119
This Delta deal was found by Cheapflights users on 12/21. 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.
Tue 12/246:00 amMDW - ICN
1 stop20h 45mDelta
Thu 1/305:50 pmICN - MDW
1 stop19h 30mDelta
Deal found 12/21$2,200
This ANA deal was found by Cheapflights users on 12/20. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/304:25 pmORD - GMP
1 stop27h 55mANA
Wed 4/307:55 pmGMP - ORD
1 stop26h 45mANA
Deal found 12/20$2,200
This ANA deal was found by Cheapflights users on 12/20. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/304:25 pmORD - GMP
1 stop27h 55mMultiple Airlines
Wed 4/307:55 pmGMP - ORD
2 stops24h 13mMultiple Airlines
Deal found 12/20$2,210
This Lufthansa deal was found by Cheapflights users on 12/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/316:30 pmORD - ICN
2 stops25h 45mLufthansa
Tue 4/2911:40 amICN - ORD
2 stops37h 15mLufthansa
Deal found 12/20$2,225

Find flights from Illinois to South Korea within your budget

Customize your flight search to find flights from Illinois to South Korea 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 December 22, 2024.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Wed 5/28

11:00 am-4:50 pm

2 stops39h 50m

Busan Gimhae

Sat 6/21

5:50 pm-9:00 pm

2 stops41h 10m

$780

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 1/27

6:00 am-3:30 pm

1 stop18h 30m

Incheon Intl

Mon 2/3

7:30 pm-11:09 pm

1 stop18h 39m

$877

MolineIncheon

MLI - ICN

MLIICN

Moline Quad-City

Sun 2/16

5:05 pm-5:45 am

1 stop21h 40m

Incheon Intl

Wed 2/26

7:25 pm-10:26 pm

1 stop18h 01m

$877

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 3/6

7:07 am-4:45 pm

1 stop18h 38m

Incheon Intl

Thu 3/13

5:50 pm-8:48 am

1 stop28h 58m

$883

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 2/1

4:36 pm-5:40 am

2 stops22h 04m

Incheon Intl

Sat 2/8

6:00 pm-6:59 pm

1 stop15h 59m

$902

MolineIncheon

MLI - ICN

MLIICN

Moline Quad-City

Fri 2/14

5:35 pm-4:15 pm

2 stops31h 40m

Incheon Intl

Mon 2/24

6:00 pm-10:24 am

2 stops31h 24m

$906

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Tue 2/4

8:35 pm-4:45 pm

1 stop29h 10m

Incheon Intl

Tue 2/11

6:50 pm-12:09 am

2 stops20h 19m

$926

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Thu 4/3

7:50 pm-7:50 am

1 stop22h 00m

Incheon Intl

Thu 4/10

11:20 pm-9:50 am

1 stop24h 30m

$927

ChampaignIncheon

CMI - ICN

CMIICN

Champaign University-Willard

Tue 2/4

6:48 am-4:45 pm

1 stop18h 57m

Incheon Intl

Tue 2/11

6:50 pm-8:39 pm

1 stop16h 49m

$929

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Tue 4/8

4:05 pm-12:35 pm

1 stop30h 30m

Incheon Intl

Thu 4/24

10:10 am-2:25 pm

1 stop42h 15m

$947

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

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

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

Travel insights for flights from Illinois to South Korea

Get recent, data-driven insights about flights from Illinois to South Korea including ideal travel times, pricing trends, and more.

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

Currently, October is the cheapest month in which you can book a flight from Illinois to South Korea (average of $1,086). Flying from Illinois to South Korea in June is currently the most expensive (average of $1,729). 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 KR?

Find hourly flight availability from Illinois to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2024.

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

Weekly flight availability from Illinois to South Korea

Explore weekly flight availability from Illinois to South Korea. 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 December 22, 2024.

The most flights from USIL to KR0 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).

Rainfall in South Korea by month

Plan your trip to South Korea by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in South Korea ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit South Korea when rainfall is around 0.8 in.

Temperature in South Korea by month

Plan your trip to South Korea by taking into account the average temperature totals by month.

If weather is an important factor for your trip to South Korea, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing South Korea

Get insights into the airlines that provide service to South Korea. 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 South Korea. Reviews last updated December 22, 2024.
Peruse reviews from past customers who have flown with Delta, American Airlines and United Airlines from Illinois to South Korea to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,265 reviews

Boarding

8.4

Crew

8.6

Comfort

8.3

Overall

8.4

Food

8.0

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

EVA Air
8.4
Very good
1,265 reviews
EVA Air
8.4
Very good
1,265 reviews

Boarding

8.4

Crew

8.6

Comfort

8.3

Overall

8.4

Food

8.0

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Korean Air
8.4
Very good
1,025 reviews
EVA Air
8.4
Very good
1,265 reviews

Boarding

8.4

Crew

8.6

Comfort

8.3

Overall

8.4

Food

8.0

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

ANA
8.4
Very good
844 reviews
EVA Air
8.4
Very good
1,265 reviews

Boarding

8.4

Crew

8.6

Comfort

8.3

Overall

8.4

Food

8.0

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Japan Airlines
8.3
Very good
1,440 reviews
EVA Air
8.4
Very good
1,265 reviews

Boarding

8.4

Crew

8.6

Comfort

8.3

Overall

8.4

Food

8.0

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Singapore Airlines
8.1
Very good
1,331 reviews
EVA Air
8.4
Very good
1,265 reviews

Boarding

8.4

Crew

8.6

Comfort

8.3

Overall

8.4

Food

8.0

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Related info for your journey

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

    $500 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Turkish Airlines, with prices starting from $506 and $546, respectively.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Illinois to South Korea (average of $1,086). Flying from Illinois to South Korea in June is currently the most expensive (average of $1,729). 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.

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Top 10 airlines flying from Illinois to South Korea

Discover the top 10 airlines that operate flights from Illinois to South Korea. 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 December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$876Average$1,092FlexibilityNo cancel feeOn-time77%
Cathay PacificCheapest$880Average$1,120FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$895Average$1,318FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$895Average$1,384FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$906Average$1,308FlexibilityNo cancel feeOn-time69%
EVA AirCheapest$1,076Average$1,276FlexibilityNo cancel feeOn-time74%
LOTCheapest$1,216Average$1,551FlexibilityNo cancel feeOn-time81%
FinnairCheapest$1,266Average$1,552FlexibilityNo cancel feeOn-time76%
Asiana AirlinesCheapest$1,280Average$1,646FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,544Average$2,250FlexibilityNo cancel feeOn-time81%
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