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$427+ Cheap flights from Illinois to Seoul (SEL)

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEL
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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Cheap flight deals from Illinois to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Seoul (SEL). 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 18, 2024.

Round-trip from

$815
(Trip.com)

One-way from

$427
(Kiwi.com)
From Illinois to Seoul (SEL)
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One-way flight from Illinois to Seoul (SEL)
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Find flight deals from Illinois to Seoul

Cheapest flights from Illinois to Seoul
Explore the most affordable flight options available from Illinois to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This Kiwi.com deal was found by Cheapflights users on 12/18. 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.
Mon 12/309:54 pmORD - ICN
2 stops51h 16mMultiple Airlines
Fri 1/107:45 pmICN - ORD
1 stop41h 07mMultiple Airlines
Deal found 12/18$1,359
This Air Canada deal was found by Cheapflights users on 12/18. 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 12/253:40 pmORD - ICN
1 stop32h 35mAir Canada
Fri 1/174:55 pmICN - ORD
1 stop36h 44mAir Canada
Deal found 12/18$1,533
This Ovago deal was found by Cheapflights users on 12/18. 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 Ovago 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
Tue 1/71:50 pmICN - ORD
1 stop38h 10mCathay Pacific
Deal found 12/18$1,576
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/251:15 pmORD - ICN
2 stops32h 05mFinnair
Fri 1/1711:00 pmICN - ORD
2 stops35h 20mFinnair
Deal found 12/17$1,745
This LOT deal was found by Cheapflights users on 12/18. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/299:55 pmORD - ICN
2 stops42h 45mLOT
Thu 1/912:35 pmICN - ORD
1 stop46h 25mLOT
Deal found 12/18$1,778
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Tue 12/248:35 amSTL - ICN
2 stops30h 05mUnited Airlines
Wed 1/16:00 pmICN - STL
1 stop21h 28mUnited Airlines
Deal found 12/16$2,041
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/3112:46 pmORD - ICN
2 stops25h 54mUnited Airlines
Tue 1/76:00 pmICN - ORD
2 stops19h 45mUnited Airlines
Deal found 12/17$2,099
This FlightHub deal was found by Cheapflights users on 12/18. 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.
Fri 12/2711:30 pmORD - ICN
1 stop28h 15mEVA Air
Tue 1/77:45 pmICN - ORD
1 stop38h 50mEVA Air
Deal found 12/18$2,177
This Delta deal was found by Cheapflights users on 12/18. 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 12/3111:05 amORD - ICN
Nonstop15h 10mDelta
Tue 1/78:05 pmICN - ORD
1 stop19h 06mDelta
Deal found 12/18$2,205
This Turkish Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/255:30 pmSTL - ICN
2 stops57h 50mMultiple Airlines
Mon 12/3012:10 amICN - STL
2 stops30h 37mMultiple Airlines
Deal found 12/16$2,269
This Delta deal was found by Cheapflights users on 12/16. 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 12/236:04 amSTL - ICN
1 stop18h 26mDelta
Tue 12/317:30 pmICN - STL
1 stop17h 36mDelta
Deal found 12/16$2,287
This Gotogate deal was found by Cheapflights users on 12/17. 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.
Tue 12/3111:05 amORD - ICN
Nonstop15h 10mKorean Air
Thu 1/910:40 amICN - ORD
Nonstop13h 00mKorean Air
Deal found 12/17$2,317

Find flights from Illinois to Seoul within your budget

Customize your flight search to find flights from Illinois to Seoul 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 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 1/18

7:09 pm-8:30 pm

2 stops34h 21m

Incheon Intl

Sun 1/26

6:55 pm-9:16 am

2 stops29h 21m

$815

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 3/13

6:00 am-3:30 pm

1 stop19h 30m

Incheon Intl

Wed 5/21

6:25 pm-11:38 pm

1 stop19h 13m

$877

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 3/24

6:29 pm-3:55 pm

2 stops31h 26m

Incheon Intl

Thu 4/24

5:25 pm-10:26 pm

1 stop19h 01m

$882

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sun 2/2

8:27 am-5:40 am

2 stops30h 13m

Incheon Intl

Sat 2/8

12:45 pm-8:43 pm

2 stops22h 58m

$906

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Fri 1/17

11:55 am-6:20 pm

1 stop39h 25m

Incheon Intl

Sat 2/1

12:10 am-10:10 am

1 stop25h 00m

$924

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Mon 2/10

5:00 am-4:45 pm

1 stop20h 45m

Incheon Intl

Mon 2/17

6:50 pm-9:14 pm

1 stop17h 24m

$927

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Wed 1/22

2:40 pm-6:35 pm

1 stop36h 55m

Incheon Intl

Sun 1/26

1:50 pm-1:00 pm

1 stop38h 10m

$955

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Mon 2/10

7:50 am-5:30 am

2 stops30h 40m

Incheon Intl

Mon 2/17

8:50 pm-1:25 pm

2 stops31h 35m

$957

ChicagoIncheon

MDW - ICN

MDWICN

Chicago Midway

Thu 2/20

6:40 am-5:30 am

2 stops31h 50m

Incheon Intl

Sun 3/9

8:50 pm-11:34 am

2 stops28h 44m

$1,052

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Thu 1/16

5:00 am-4:45 pm

1 stop20h 45m

Incheon Intl

Wed 1/29

6:50 pm-8:25 am

1 stop28h 35m

$1,072

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 57 results
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Best time to book a flight from Illinois to Seoul

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

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

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

Currently, October is the cheapest month in which you can book a flight from Illinois to Seoul (average of $1,086). Flying from Illinois to Seoul 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 SEL?

Find hourly flight availability from Illinois to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

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

Weekly flight availability from Illinois to Seoul

Explore weekly flight availability from Illinois to Seoul. 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 18, 2024.

The most flights from USIL to SEL 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 Seoul by month

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

In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.

Temperature in Seoul by month

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

If weather is an important factor for your trip to Seoul, 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 35.6 F).

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated December 18, 2024.
Read through reviews of airlines operating flights from Illinois to Seoul, such as Delta, American Airlines and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,273 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.2

Food

8.0

Overall

8.4

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
1,273 reviews
EVA Air
8.4
Very good
1,273 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.2

Food

8.0

Overall

8.4

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
839 reviews
EVA Air
8.4
Very good
1,273 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.2

Food

8.0

Overall

8.4

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
1,018 reviews
EVA Air
8.4
Very good
1,273 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.2

Food

8.0

Overall

8.4

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
1,443 reviews
EVA Air
8.4
Very good
1,273 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.2

Food

8.0

Overall

8.4

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
1,329 reviews
EVA Air
8.4
Very good
1,273 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.2

Food

8.0

Overall

8.4

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 Seoul. 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 Seoul one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $499. Users have also found prices from $545 and $563 on Turkish Airlines and WestJet, respectively.

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

    The most popular flight routes from Illinois to Seoul are Chicago O'Hare Intl - Incheon Intl, Chicago O'Hare Intl - Seoul Gimpo Intl and Chicago Midway - Incheon Intl.

  • What are the most reliable airlines from Illinois to Seoul?

    Before booking your flight to Seoul from Illinois, check out the most reliable airlines to get you to your destination on time: Delta (85%), Korean Air (53%), Atlas Air( 18%).

  • What are the cheapest flights from Illinois to Seoul?

    While on average a flight from Illinois to Seoul is generally $2,580, our data shows the cheapest flight currently is $505. When looking at the most popular route, (Chicago O'Hare Intl - Incheon Intl), you can expect to pay $821 for that flight.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Illinois to Seoul (average of $1,086). Flying from Illinois to Seoul 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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Alternative routes for Illinois to Seoul

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Seoul

Discover the top 10 airlines that operate flights from Illinois to Seoul. 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 18, 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$1,888FlexibilityNo cancel feeOn-time81%
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