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$494+ Cheap flights from Seoul (SEL) to Illinois

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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — ORD
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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Cheap flight deals from Seoul to Illinois

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

$557
(American Airlines)

One-way from

$494
(American Airlines)
From Seoul (SEL) to Illinois
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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 December 22, 2024.

This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/236:50 pmICN - ORD
1 stop19h 19mAmerican Airlines
Thu 1/238:50 pmORD - ICN
2 stops28h 55mAmerican Airlines
Deal found 12/21$752
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2412:45 pmICN - ORD
2 stops35h 59mUnited Airlines
Thu 12/266:15 amORD - ICN
1 stop32h 25mUnited Airlines
Deal found 12/22$981
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/268:10 pmICN - ORD
1 stop26h 55mAir Canada
Thu 1/93:40 pmORD - ICN
1 stop32h 35mAir Canada
Deal found 12/21$1,017
This Asiana 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:15 pmICN - ORD
1 stop17h 10mMultiple Airlines
Sat 3/17:00 amORD - ICN
1 stop19h 50mMultiple Airlines
Deal found 12/21$1,047
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/287:45 pmICN - ORD
1 stop38h 50mEVA Air
Thu 6/1912:30 amORD - ICN
1 stop20h 30mEVA Air
Deal found 12/21$1,190
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2510:40 amICN - ORD
Nonstop12h 50mKorean Air
Sun 10/512:20 pmORD - ICN
Nonstop14h 30mKorean Air
Deal found 12/20$1,273
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/281:20 pmICN - MDW
2 stops26h 07mMultiple Airlines
Sat 1/47:00 amMDW - ICN
2 stops42h 10mMultiple Airlines
Deal found 12/21$1,280
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/252:40 pmICN - ORD
1 stop19h 15mAsiana Airlines
Sun 10/57:15 amORD - ICN
1 stop20h 20mAsiana Airlines
Deal found 12/20$1,325
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2512:25 pmGMP - ORD
1 stop33h 55mANA
Wed 1/14:25 pmORD - GMP
1 stop39h 05mANA
Deal found 12/21$1,326
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.
Wed 12/2510:40 amICN - ORD
Nonstop12h 50mDelta
Wed 1/16:00 amORD - ICN
1 stop19h 15mDelta
Deal found 12/21$1,332
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2712:20 amICN - ORD
1 stop47h 05mEtihad Airways
Sun 2/231:10 pmORD - ICN
1 stop31h 05mEtihad Airways
Deal found 12/22$1,415
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2712:10 amICN - ORD
1 stop25h 00mTurkish Airlines
Wed 2/268:30 pmORD - ICN
1 stop21h 35mTurkish Airlines
Deal found 12/21$1,431

Find flights from Seoul to Illinois within your budget

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 December 22, 2024.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

IncheonChampaign

ICN - CMI

ICNCMI

Incheon Intl

Wed 2/5

6:50 pm-11:14 am

2 stops31h 24m

Champaign University-Willard

Wed 2/19

12:27 pm-4:45 pm

2 stops37h 18m

$557

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Tue 1/28

6:00 pm-2:34 pm

2 stops35h 34m

Chicago O'Hare Intl

Wed 1/29

8:29 pm-4:15 pm

2 stops28h 46m

$721

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Tue 2/4

6:50 pm-7:11 am

2 stops27h 21m

Chicago O'Hare Intl

Thu 2/13

6:00 am-4:45 pm

1 stop19h 45m

$752

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 2/3

12:45 pm-6:09 pm

1 stop20h 24m

Lambert-St Louis

Fri 2/21

9:00 am-5:40 am

1 stop29h 40m

$829

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Thu 4/24

5:45 pm-4:48 pm

2 stops37h 03m

Chicago O'Hare Intl

Thu 5/1

3:40 pm-4:05 pm

1 stop34h 25m

$860

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Thu 3/20

12:35 pm-9:00 pm

1 stop46h 25m

Chicago O'Hare Intl

Tue 11/11

9:55 pm-7:10 am

1 stop42h 15m

$886

SeoulChicago

GMP - ORD

GMPORD

Seoul Gimpo Intl

Wed 2/12

7:50 pm-7:20 am

1 stop26h 30m

Chicago O'Hare Intl

Tue 2/18

4:25 pm-11:20 am

1 stop27h 55m

$901

SeoulChicago

GMP - ORD

GMPORD

Seoul Gimpo Intl

Thu 1/30

12:05 pm-5:45 pm

2 stops20h 40m

Chicago O'Hare Intl

Wed 2/12

10:35 am-6:20 pm

1 stop16h 45m

$915

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 2/21

4:55 pm-12:37 pm

3 stops34h 42m

Chicago O'Hare Intl

Thu 2/27

5:33 pm-6:25 pm

2 stops33h 52m

$916

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 4/10

5:45 pm-2:59 pm

2 stops35h 14m

Lambert-St Louis

Sun 4/13

3:50 pm-4:05 pm

2 stops34h 15m

$963

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 53 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.

Travel insights for flights from Seoul to Illinois

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

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 $317). 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 December 22, 2024.

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 December 22, 2024.

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 December 22, 2024.
See what other customers who have flown with Air Canada, LOT and United 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
1,265 reviews

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Food

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

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Food

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

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Food

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

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Food

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

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Food

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.

Asiana Airlines
8.3
Very good
474 reviews
EVA Air
8.4
Very good
1,265 reviews

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Food

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 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?

    $494 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 Japan Airlines, with prices starting from $644 and $648, respectively.

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

    While some choose either Incheon Intl - Chicago Midway or Seoul Gimpo Intl - Chicago O'Hare Intl, 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 $849. On average you can expect to pay $1,329. The most popular route, (Incheon Intl - Chicago O'Hare Intl), can usually be booked for $721.

  • 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 $317). 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 Seoul to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Seoul to Illinois

Discover the top 5 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 December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$697Average$992FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$820Average$1,038FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,089Average$1,481FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,194Average$1,492FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,269Average$1,532FlexibilityNo cancel feeOn-timeN/A
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