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$422+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEL
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
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 November 20, 2024.

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 November 20, 2024.

This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/206:00 amSTL - ICN
1 stop18h 30mDelta
Wed 12/45:50 pmICN - STL
1 stop20h 51mDelta
Deal found 11/20$902
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Sat 11/235:00 amORD - ICN
1 stop20h 30mAmerican Airlines
Wed 12/116:50 pmICN - ORD
1 stop17h 28mAmerican Airlines
Deal found 11/19$953
This Kiwi.com deal was found by Cheapflights users on 11/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/58:56 pmORD - ICN
2 stops32h 34mMultiple Airlines
Wed 12/116:55 pmICN - ORD
1 stop37h 04mMultiple Airlines
Deal found 11/20$955
This American Airlines deal was found by Cheapflights users on 11/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/206:20 amMLI - ICN
1 stop19h 25mAmerican Airlines
Tue 11/266:50 pmICN - MLI
1 stop17h 49mAmerican Airlines
Deal found 11/18$1,062
This Air Canada deal was found by Cheapflights users on 11/19. 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.
Tue 11/198:25 pmORD - ICN
2 stops29h 20mAir Canada
Thu 11/286:20 pmICN - ORD
1 stop35h 19mAir Canada
Deal found 11/19$1,065
This oojo deal was found by Cheapflights users on 11/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/262:40 pmORD - ICN
1 stop31h 05mCathay Pacific
Wed 12/43:00 pmICN - ORD
1 stop37h 00mCathay Pacific
Deal found 11/19$1,069
This Korean Air deal was found by Cheapflights users on 11/19. 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.
Sat 12/76:00 amSTL - ICN
1 stop18h 30mMultiple Airlines
Fri 12/135:50 pmICN - STL
1 stop18h 14mMultiple Airlines
Deal found 11/19$1,104
This Kissandfly.com deal was found by Cheapflights users on 11/20. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/246:00 amORD - ICN
1 stop19h 45mBritish Airways
Sat 12/76:50 pmICN - ORD
1 stop29h 40mBritish Airways
Deal found 11/20$1,105
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/236:34 pmSTL - ICN
2 stops31h 11mAmerican Airlines
Sat 11/306:50 pmICN - STL
2 stops28h 59mAmerican Airlines
Deal found 11/20$1,107
This FlightHub deal was found by Cheapflights users on 11/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/211:55 amORD - ICN
1 stop30h 10mTurkish Airlines
Sun 12/812:10 amICN - ORD
1 stop25h 00mTurkish Airlines
Deal found 11/20$1,108
This oojo deal was found by Cheapflights users on 11/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2511:30 pmORD - ICN
1 stop20h 00mEVA Air
Mon 12/27:45 pmICN - ORD
1 stop38h 50mEVA Air
Deal found 11/20$1,147
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Wed 12/49:00 amORD - GMP
2 stops22h 20mMultiple Airlines
Tue 12/107:50 amGMP - ORD
2 stops22h 35mMultiple Airlines
Deal found 11/19$1,169

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 1/25

3:50 pm-3:15 pm

2 stops32h 25m

Incheon Intl

Fri 1/31

8:10 pm-3:06 pm

1 stop33h 56m

$864

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 1/22

6:00 am-3:30 pm

1 stop18h 30m

Incheon Intl

Wed 1/29

7:25 pm-11:37 pm

1 stop19h 12m

$902

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 4/5

6:00 pm-4:20 am

1 stop20h 20m

Incheon Intl

Tue 4/22

4:50 pm-12:27 am

1 stop21h 37m

$903

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Tue 12/3

8:35 pm-4:45 pm

1 stop29h 10m

Incheon Intl

Tue 12/10

6:50 pm-11:59 pm

1 stop20h 09m

$953

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Thu 12/5

8:56 pm-8:30 pm

2 stops32h 34m

Incheon Intl

Wed 12/11

6:55 pm-4:59 pm

1 stop37h 04m

$955

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Sat 5/10

7:50 pm-7:50 am

1 stop22h 00m

Incheon Intl

Fri 5/30

11:20 pm-9:50 am

1 stop24h 30m

$960

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Sun 3/30

4:05 pm-9:15 pm

1 stop39h 10m

Incheon Intl

Sat 4/12

1:35 pm-2:25 pm

1 stop38h 50m

$978

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Mon 4/21

7:46 pm-4:05 pm

1 stop30h 19m

Incheon Intl

Wed 4/30

6:00 pm-12:49 pm

2 stops32h 49m

$987

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Sun 4/13

12:30 am-6:45 pm

1 stop28h 15m

Incheon Intl

Mon 4/28

12:00 pm-9:00 pm

1 stop23h 00m

$1,023

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Sun 1/26

7:05 am-10:20 pm

2 stops24h 15m

Seoul Gimpo Intl

Sat 2/1

12:05 pm-7:37 pm

2 stops22h 32m

$1,081

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

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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 $1,102). Flying from Illinois to Seoul in June is currently the most expensive (average of $1,708). 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 November 20, 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 November 20, 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 November 20, 2024.
Read through reviews of airlines operating flights from Illinois to Seoul, such as Air Canada, Delta and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,024 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.5

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

Korean Air
8.5
Very good
1,024 reviews
Korean Air
8.5
Very good
1,024 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.5

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

EVA Air
8.4
Very good
1,308 reviews
Korean Air
8.5
Very good
1,024 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.5

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

ANA
8.4
Very good
833 reviews
Korean Air
8.5
Very good
1,024 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.5

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

Japan Airlines
8.3
Very good
1,460 reviews
Korean Air
8.5
Very good
1,024 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.5

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

Singapore Airlines
8.1
Very good
1,336 reviews
Korean Air
8.5
Very good
1,024 reviews

Comfort

8.3

Entertainment

8.2

Overall

8.5

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

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 Air Canada. According to our data, you can fly for as low as $466. Users have also found prices from $511 and $518 on Turkish Airlines and American Airlines, 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 (73%), Korean Air (56%), Atlas Air( 15%).

  • What are the cheapest flights from Illinois to Seoul?

    While on average a flight from Illinois to Seoul is generally $2,354, our data shows the cheapest flight currently is $562. When looking at the most popular route, (Chicago O'Hare Intl - Incheon Intl), you can expect to pay $771 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 $1,102). Flying from Illinois to Seoul in June is currently the most expensive (average of $1,708). 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$845Average$1,365FlexibilityNo cancel feeOn-time71%
Cathay PacificCheapest$885Average$1,123FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$896Average$1,334FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$906Average$1,320FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$911Average$1,077FlexibilityNo cancel feeOn-time77%
EVA AirCheapest$1,076Average$1,275FlexibilityNo cancel feeOn-time74%
LOTCheapest$1,216Average$1,489FlexibilityNo cancel feeOn-time81%
FinnairCheapest$1,334Average$1,565FlexibilityNo cancel feeOn-time76%
Asiana AirlinesCheapest$1,491Average$1,646FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,544Average$1,962FlexibilityNo cancel feeOn-time81%
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