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$232+ Cheap flights from Seoul (SEL) 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — ORD
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Seoul to Illinois

Keep the following information in mind while searching for Seoul to Illinois flight deals. Data was last updated May 1, 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

$1,090

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 Seoul (SEL) 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 May 2025
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Price to beat on a round-trip flight from Seoul (SEL) to Illinois.
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Price to beat on a one-way flight from Seoul (SEL) to Illinois.
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Find flight deals from Seoul to Illinois

Cheapest flights from Seoul to Illinois
Explore the most affordable flight options available from Seoul to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/30. 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 5/208:40 pmICN - ORD
1 stop24h 02mMultiple Airlines
Sun 5/256:10 amORD - ICN
1 stop21h 25mMultiple Airlines
Deal found 4/30$643
This United Airlines deal was found by Cheapflights users on 4/30. 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 10/911:30 amICN - ORD
2 stops22h 20mUnited Airlines
Fri 10/177:15 amORD - ICN
1 stop31h 05mUnited Airlines
Deal found 4/30$761
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.
Fri 10/105:45 pmICN - ORD
1 stop36h 57mAir Canada
Fri 10/2410:00 amORD - ICN
1 stop17h 30mAir Canada
Deal found 4/29$843
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/136:20 pmICN - STL
1 stop19h 39mMultiple Airlines
Sat 8/97:32 pmSTL - ICN
1 stop32h 23mMultiple Airlines
Deal found 4/29$917
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.
Sat 7/512:40 pmICN - ORD
1 stop37h 25mLOT
Sun 8/249:40 pmORD - ICN
1 stop42h 45mLOT
Deal found 4/29$949
This WhyPayMore 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2312:00 pmICN - ORD
1 stop23h 00mEVA Air
Sun 7/1312:30 amORD - ICN
1 stop20h 30mEVA Air
Deal found 4/29$955
This Gotogate deal was found by Cheapflights users on 4/30. 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.
Sun 11/28:10 pmICN - STL
1 stop34h 16mAir Canada
Sat 11/84:15 pmSTL - ICN
2 stops57h 50mAir Canada
Deal found 4/30$962
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.
Sat 11/11:50 pmGMP - ORD
1 stop20h 45mEVA Air
Sun 11/911:30 pmORD - GMP
1 stop27h 30mEVA Air
Deal found 4/29$992
This Gotogate deal was found by Cheapflights users on 4/30. 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.
Mon 9/2212:40 pmGMP - ORD
1 stop34h 00mANA
Wed 9/245:45 pmORD - GMP
1 stop38h 35mANA
Deal found 4/30$1,031
This American Airlines deal was found by Cheapflights users on 4/30. 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 9/155:25 pmICN - STL
1 stop19h 02mAmerican Airlines
Tue 10/145:28 amSTL - ICN
1 stop20h 02mAmerican Airlines
Deal found 4/30$1,054
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/411:30 amICN - STL
2 stops19h 03mUnited Airlines
Sun 9/75:30 pmSTL - ICN
2 stops31h 30mUnited Airlines
Deal found 4/30$1,079
This Delta deal was found by Cheapflights users on 4/30. 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 9/186:40 pmICN - MDW
1 stop32h 29mDelta
Thu 10/169:20 amMDW - ICN
1 stop18h 00mDelta
Deal found 4/30$1,159

Cheapflights Fare Finder

Customize your flight search to find flights from Seoul 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 May 1, 2025.
Use the filters below to find and compare flights from Seoul to Illinois that are best for you.

Fly from

Seoul

Fly to

Illinois

Route

Depart

Return

Price

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Tue 5/20

8:40 pm-6:42 am

1 stop24h 02m

Chicago O'Hare Intl

Sun 5/25

6:10 am-5:35 pm

1 stop21h 25m

$643

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Thu 10/9

11:30 am-7:50 pm

2 stops22h 20m

Chicago O'Hare Intl

Fri 10/17

7:15 am-4:20 am

1 stop31h 05m

$761

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 10/10

5:45 pm-4:42 pm

1 stop36h 57m

Chicago O'Hare Intl

Fri 10/24

10:00 am-5:30 pm

1 stop17h 30m

$843

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 5/13

6:20 pm-11:59 pm

1 stop19h 39m

Lambert-St Louis

Sat 8/9

7:32 pm-5:55 pm

1 stop32h 23m

$917

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Sat 7/5

12:40 pm-12:05 pm

1 stop37h 25m

Chicago O'Hare Intl

Sun 8/24

9:40 pm-6:25 am

1 stop42h 45m

$949

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 5/23

12:00 pm-9:00 pm

1 stop23h 00m

Chicago O'Hare Intl

Sun 7/13

12:30 am-11:00 am

1 stop20h 30m

$955

SeoulChicago

GMP - ORD

GMPORD

Seoul Gimpo Intl

Mon 9/22

12:40 pm-8:40 am

1 stop34h 00m

Chicago O'Hare Intl

Wed 9/24

5:45 pm-10:20 pm

1 stop38h 35m

$1,031

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 9/15

5:25 pm-10:27 pm

1 stop19h 02m

Lambert-St Louis

Tue 10/14

5:28 am-3:30 pm

1 stop20h 02m

$1,054

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 9/4

11:30 am-4:53 pm

1 stop19h 23m

Lambert-St Louis

Sun 9/7

5:30 pm-3:00 pm

2 stops31h 30m

$1,079

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/12

5:45 pm-7:58 pm

2 stops40h 13m

Lambert-St Louis

Mon 8/4

1:30 pm-4:05 pm

2 stops36h 35m

$1,091

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 58 results
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Best time to book a flight from Seoul to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Seoul to Illinois (average of $245). Flying from Seoul 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 SEL to IL?

Find hourly flight availability from Seoul 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 May 1, 2025.

When flying from Seoul to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Seoul to Illinois

Explore weekly flight availability from Seoul 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 May 1, 2025.

The most flights from SEL 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).

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 May 1, 2025.
See what other customers who have flown with EVA Air, Korean Air and Japan Airlines from Seoul to Illinois have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

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

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

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
1,068 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

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
1,464 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

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

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

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

Comfort

8.3

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

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 Seoul 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 Seoul to Illinois one-way?

    $479 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 WestJet and EVA Air, with prices starting from $539 and $601, respectively.

  • What are the most popular routes from Seoul to Illinois?

    While some choose either Seoul Gimpo Intl - Chicago O'Hare Intl or Incheon Intl - Chicago Midway, Incheon Intl - Chicago O'Hare Intl is the most popular route from Seoul to Illinois.

  • What are the cheapest flights from Seoul to Illinois?

    The cheapest flight price from Seoul to Illinois is $637. On average you can expect to pay $1,149. The most popular route, (Incheon Intl - Chicago O'Hare Intl), can usually be booked for $635.

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

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

  • How can I find direct flights from Seoul to Illinois?

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

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

    Yes. Cheapflights offers flight deals from Seoul 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 Seoul to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Seoul to Illinois (average of $245). Flying from Seoul 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 Seoul 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 Seoul to Illinois

Discover the top 6 airlines that operate flights from Seoul 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 May 1, 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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