What are the cheapest airlines to fly from Illinois to Seoul one-way?

For one-way options, check prices for Cathay Pacific. According to our data, you can fly for as low as $436. Users have also found prices from $568 and $609 on United 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 cheapest flights from Illinois to Seoul?

While on average a flight from Illinois to Seoul is generally $2,026, our data shows the cheapest flight currently is $447. When looking at the most popular route, (Chicago O'Hare Intl - Incheon Intl), you can expect to pay $750 for that flight.

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 (86%), Korean Air (76%), Atlas Air( 11%).

What are the most popular airlines that fly from Illinois to Seoul?

When booking a flight from Illinois to Seoul, you may want to consider flying on American Airlines, Air Canada or Finnair as they are the most popular for this route.

How far in advance should I book a flight from Illinois to Seoul?

Find a great deal and save up to 3% by booking at least 41 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Illinois to Seoul within the next two weeks, with the cheapest ticket starting at $927.

What is the cheapest month to fly from Illinois to Seoul?

Our data shows that January tends to be the cheapest month to fly to Seoul from Illinois. Users have commonly found prices around $1,486 for the month, but tickets can be as low as $891. Due to multiple factors, prepare for potentially higher prices in December.

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.

$423+ Flights from Illinois to Seoul

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Cheap flight deals from Illinois to Seoul

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$993 (United Airlines)
One-way from	$436 (Mytrip)
Popular in	December
Cheapest in	January
Average price	$1,331
Good round-trip deal	$897 or less
Good one-way deal	$525 or less

Provider with most accurate pricing for Chicago (CHI)-Seoul (SEL) flight deals.

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Provider most trusted by Cheapflights users for Chicago (CHI)-Seoul (SEL) flights.

Search Deals

From Illinois to Seoul (SEL)

Search Deals

One-way flight from Illinois to Seoul (SEL)

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($97 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($58 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

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Price to beat on a round-trip flight from Illinois to Seoul (SEL).

Search Deals

Price to beat on a 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 abril 22, 2025.

lun. 11/101:27 pmSTL - ICN

2 stops25h 13mUnited Airlines

jue. 11/2712:45 pmICN - STL

1 stop19h 18mUnited Airlines

Deal found 4/21

$992

dom. 8/3112:30 amORD - GMP

1 stop27h 40mEVA Air

mar. 9/237:15 pmGMP - ORD

1 stop39h 30mEVA Air

Deal found 4/22

$1,128

dom. 9/712:30 amORD - ICN

1 stop20h 30mMultiple Airlines

jue. 9/118:45 pmICN - ORD

2 stops53h 54mMultiple Airlines

Deal found 4/22

$1,148

dom. 9/712:30 amORD - ICN

1 stop20h 30mEVA Air

jue. 9/1812:00 pmICN - ORD

1 stop22h 45mEVA Air

Deal found 4/21

$1,154

vie. 7/44:00 pmORD - ICN

1 stop37h 05mCathay Pacific

mar. 7/228:05 pmICN - ORD

1 stop32h 20mCathay Pacific

Deal found 4/21

$1,162

jue. 5/11:30 pmSTL - ICN

2 stops36h 35mMultiple Airlines

jue. 5/221:30 pmICN - STL

3 stops35h 55mMultiple Airlines

Deal found 4/22

$1,164

dom. 10/57:50 pmORD - ICN

1 stop31h 50mTurkish Airlines

vie. 10/3110:45 amICN - ORD

1 stop38h 25mTurkish Airlines

Deal found 4/21

$1,182

lun. 4/2812:00 pmSTL - ICN

2 stops34h 40mCathay Pacific

mié. 5/213:10 pmICN - STL

2 stops45h 35mCathay Pacific

Deal found 4/22

$1,233

mié. 10/11:30 pmSTL - ICN

2 stops60h 35mAir Canada

lun. 10/67:05 pmICN - STL

2 stops38h 52mAir Canada

Deal found 4/22

$1,261

mar. 5/61:33 pmORD - ICN

2 stops31h 47mFinnair

sáb. 5/249:50 pmICN - ORD

2 stops45h 20mFinnair

Deal found 4/22

$1,273

jue. 4/245:34 pmSTL - ICN

1 stop33h 46mDelta

sáb. 5/316:40 pmICN - STL

1 stop18h 46mDelta

Deal found 4/22

$1,281

mié. 10/19:20 amMDW - ICN

2 stops19h 25mWestJet

vie. 10/108:45 pmICN - MDW

2 stops27h 06mWestJet

Deal found 4/20

$1,370

Best flights from Illinois to Seoul
Discover carefully curated flight deals from Illinois to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 22, 2025.

lun. 9/15:49 pmSTL - ICN

1 stop20h 31mUnited Airlines

sáb. 9/2011:30 amICN - STL

1 stop19h 23mUnited Airlines

Deal found 4/21

$993

dom. 8/3112:30 amORD - GMP

1 stop27h 40mEVA Air

mar. 9/237:15 pmGMP - ORD

1 stop39h 30mEVA Air

Deal found 4/22

$1,128

dom. 9/712:30 amORD - ICN

1 stop20h 30mMultiple Airlines

jue. 9/118:45 pmICN - ORD

2 stops53h 54mMultiple Airlines

Deal found 4/22

$1,148

mié. 7/24:00 pmORD - ICN

1 stop39h 10mCathay Pacific

jue. 7/243:10 pmICN - ORD

1 stop37h 15mCathay Pacific

Deal found 4/22

$1,162

sáb. 8/911:45 pmORD - ICN

1 stop27h 55mTurkish Airlines

sáb. 8/1610:20 amICN - ORD

1 stop25h 40mTurkish Airlines

Deal found 4/22

$1,192

mié. 10/11:30 pmSTL - ICN

2 stops60h 35mAir Canada

lun. 10/67:05 pmICN - STL

2 stops38h 52mAir Canada

Deal found 4/22

$1,261

mar. 5/61:33 pmORD - ICN

2 stops31h 47mFinnair

sáb. 5/249:50 pmICN - ORD

2 stops45h 20mFinnair

Deal found 4/22

$1,273

lun. 9/227:15 amORD - ICN

2 stops21h 30mWestJet

mar. 9/308:45 pmICN - ORD

2 stops29h 54mWestJet

Deal found 4/22

$1,339

sáb. 9/67:00 amSTL - GMP

2 stops24h 50mJapan Airlines

vie. 9/127:55 amGMP - STL

2 stops18h 53mJapan Airlines

Deal found 4/21

$1,462

jue. 5/86:00 amSTL - ICN

1 stop21h 20mDelta

jue. 5/2210:15 amICN - STL

1 stop20h 32mDelta

Deal found 4/22

$1,510

jue. 9/257:59 pmSTL - ICN

2 stops31h 06mQatar Airways

mié. 10/2912:20 amICN - STL

2 stops36h 14mQatar Airways

Deal found 4/21

$1,546

lun. 9/111:50 amORD - GMP

1 stop20h 30mANA

mar. 9/237:40 amGMP - ORD

1 stop21h 15mANA

Deal found 4/22

$1,604

Last-minute flights from Illinois to Seoul
Discover last-minute flight deals from Illinois to Seoul. Data last updated abril 22, 2025 and is based on user searches.

jue. 4/245:34 pmSTL - ICN

1 stop33h 46mDelta

sáb. 5/316:40 pmICN - STL

1 stop18h 46mDelta

Deal found 4/22

$1,281

sáb. 4/265:58 pmSTL - ICN

1 stop20h 22mUnited Airlines

sáb. 5/311:30 amICN - STL

2 stops19h 03mUnited Airlines

Deal found 4/21

$1,280

dom. 4/275:50 pmSTL - ICN

1 stop20h 30mUnited Airlines

jue. 5/1511:30 amICN - STL

1 stop25h 15mUnited Airlines

Deal found 4/21

$1,320

dom. 4/276:00 amSTL - ICN

1 stop18h 10mDelta

jue. 5/1510:15 amICN - STL

1 stop20h 32mDelta

Deal found 4/22

$1,343

dom. 4/2712:30 amORD - GMP

1 stop27h 40mMultiple Airlines

lun. 5/512:05 pmGMP - ORD

1 stop35h 10mMultiple Airlines

Deal found 4/22

$1,433

dom. 4/2711:21 amSTL - ICN

2 stops39h 44mQatar Airways

mié. 5/141:20 amICN - STL

2 stops36h 44mQatar Airways

Deal found 4/22

$1,594

lun. 4/2812:00 pmSTL - ICN

2 stops34h 40mCathay Pacific

mié. 5/213:10 pmICN - STL

2 stops45h 35mCathay Pacific

Deal found 4/22

$1,233

lun. 4/2812:30 amORD - GMP

1 stop28h 45mEVA Air

mar. 5/67:15 pmGMP - ORD

1 stop39h 45mEVA Air

Deal found 4/22

$1,244

mar. 4/294:00 pmORD - ICN

1 stop32h 05mCathay Pacific

vie. 8/153:10 pmICN - ORD

1 stop37h 15mCathay Pacific

Deal found 4/21

$1,324

mié. 4/3012:30 amORD - ICN

1 stop20h 30mEVA Air

mar. 5/612:00 pmICN - ORD

1 stop23h 00mEVA Air

Deal found 4/21

$1,161

mié. 4/304:00 pmORD - ICN

1 stop39h 10mMultiple Airlines

dom. 6/151:30 pmICN - ORD

3 stops33h 56mMultiple Airlines

Deal found 4/21

$1,172

jue. 5/11:30 pmSTL - ICN

2 stops36h 35mMultiple Airlines

jue. 5/221:30 pmICN - STL

3 stops35h 55mMultiple Airlines

Deal found 4/22

$1,164

One-way flights from Illinois to Seoul
Search for one-way flight options from Illinois to Seoul. Find affordable one-way fares based on user searches. Data last updated abril 22, 2025.

lun. 4/284:00 pmORD - ICN

1 stop30h 40mCathay Pacific

Deal found 4/22

$436

jue. 5/297:59 pmORD - ICN

1 stop34h 31mMultiple Airlines

Deal found 4/21

$476

jue. 5/14:00 pmORD - GMP

3 stops51h 05mMultiple Airlines

Deal found 4/22

$562

mar. 5/272:40 pmSTL - ICN

3 stops36h 25mMultiple Airlines

Deal found 4/22

$563

lun. 7/285:30 pmSTL - ICN

2 stops20h 50mUnited Airlines

Deal found 4/22

$568

mié. 6/41:40 pmORD - ICN

2 stops39h 05mWestJet

Deal found 4/22

$609

dom. 5/188:30 amMDW - ICN

2 stops41h 15mMultiple Airlines

Deal found 4/21

$634

dom. 4/2712:30 amORD - ICN

1 stop20h 30mEVA Air

Deal found 4/22

$660

dom. 6/16:00 amSTL - ICN

2 stops46h 45mWestJet

Deal found 4/21

$674

mié. 5/712:30 amORD - GMP

1 stop22h 20mEVA Air

Deal found 4/22

$692

jue. 5/151:55 pmORD - ICN

1 stop30h 50mEtihad Airways

Deal found 4/21

$718

mar. 5/272:40 pmSTL - GMP

3 stops41h 45mMultiple Airlines

Deal found 4/22

$755

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

lun. 9/1

5:49 pm-4:20 am

1 stop20h 31m

Incheon Intl

sáb. 9/20

11:30 am-4:53 pm

1 stop19h 23m

$993

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

dom. 8/31

12:30 am-6:10 pm

1 stop27h 40m

Seoul Gimpo Intl

mar. 9/23

7:15 pm-8:45 pm

1 stop39h 30m

$1,128

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

dom. 9/7

12:30 am-11:00 am

1 stop20h 30m

Incheon Intl

jue. 9/11

8:45 pm-12:39 pm

2 stops53h 54m

$1,148

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

dom. 9/7

12:30 am-11:00 am

1 stop20h 30m

Incheon Intl

jue. 9/18

12:00 pm-8:45 pm

1 stop22h 45m

$1,154

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

vie. 7/4

4:00 pm-7:05 pm

1 stop37h 05m

Incheon Intl

mar. 7/22

8:05 pm-2:25 pm

1 stop32h 20m

$1,162

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

dom. 10/5

7:50 pm-5:40 pm

1 stop31h 50m

Incheon Intl

vie. 10/31

10:45 am-11:10 am

1 stop38h 25m

$1,182

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

mié. 10/1

6:30 am-6:35 pm

1 stop22h 05m

Incheon Intl

lun. 10/6

7:05 pm-3:18 pm

1 stop34h 13m

$1,215

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

mié. 10/1

1:30 pm-4:05 pm

2 stops60h 35m

Incheon Intl

lun. 10/6

7:05 pm-7:57 pm

2 stops38h 52m

$1,261

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

mar. 5/6

1:33 pm-11:20 am

2 stops31h 47m

Incheon Intl

sáb. 5/24

9:50 pm-5:10 am

2 stops45h 20m

$1,273

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

mar. 9/9

1:55 pm-6:45 pm

2 stops38h 50m

Incheon Intl

dom. 9/21

8:45 pm-4:43 pm

1 stop33h 58m

$1,309

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Showing 1-10 of 60 results

...

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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Seoul

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

Currently, February is the cheapest month in which you can book a flight from Illinois to Seoul (average of $1,001). Flying from Illinois to Seoul in June is currently the most expensive (average of $1,650). 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?

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

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

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

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

Read through reviews of airlines operating flights from Illinois to Seoul, such as EVA Air, Korean Air and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

EVA Air

8.4

Very good

1,179 reviews

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Korean Air

8.4

Very good

1,062 reviews

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Japan Airlines

8.3

Very good

1,450 reviews

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

China Airlines

8.3

Very good

727 reviews

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

ANA

8.3

Very good

847 reviews

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Related info for your journey

What are the cheapest airlines to fly from Illinois to Seoul one-way?
For one-way options, check prices for Cathay Pacific. According to our data, you can fly for as low as $436. Users have also found prices from $568 and $609 on United 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 (86%), Korean Air (76%), Atlas Air( 11%).
What are the cheapest flights from Illinois to Seoul?
While on average a flight from Illinois to Seoul is generally $2,026, our data shows the cheapest flight currently is $447. When looking at the most popular route, (Chicago O'Hare Intl - Incheon Intl), you can expect to pay $750 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, February is the cheapest month in which you can book a flight from Illinois to Seoul (average of $1,001). Flying from Illinois to Seoul in June is currently the most expensive (average of $1,650). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Illinois to Seoul

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Top 10 airlines flying from Illinois to Seoul

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$660	Average$1,023	FlexibilityNo cancel fee	On-time69%
Cathay Pacific	Cheapest$821	Average$942	FlexibilityNo cancel fee	On-time72%
Turkish Airlines	Cheapest$848	Average$1,056	FlexibilityNo cancel fee	On-time77%
Air Canada	Cheapest$891	Average$1,318	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$895	Average$1,049	FlexibilityNo cancel fee	On-time71%
EVA Air	Cheapest$1,059	Average$1,245	FlexibilityNo cancel fee	On-time74%
Finnair	Cheapest$1,110	Average$1,503	FlexibilityNo cancel fee	On-time76%
Delta	Cheapest$1,271	Average$1,832	FlexibilityNo cancel fee	On-timeN/A
Asiana Airlines	Cheapest$1,271	Average$1,880	FlexibilityNo cancel fee	On-time76%
Korean Air	Cheapest$1,520	Average$1,809	FlexibilityNo cancel fee	On-time81%

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$423+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Seoul with Cheapflights

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Cheap flight deals from Illinois to Seoul

Keep the following information in mind while searching for Illinois to Seoul flight deals. Data was last updated abril 22, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to Seoul

Cheapest flights from Illinois to SeoulExplore 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 abril 22, 2025.

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 abril 22, 2025.

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Use the filters below to find and compare flights from Illinois to Seoul that are best for you.

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.

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Everything you need to know about your flight from Illinois to Seoul

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

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 abril 22, 2025.

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 abril 22, 2025.

Rainfall in Seoul by month

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

Temperature in Seoul by month

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

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 abril 22, 2025.

Read through reviews of airlines operating flights from Illinois to Seoul, such as EVA Air, Korean Air and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

What are the most popular routes from Illinois to Seoul?

What are the most reliable airlines from Illinois to Seoul?

What are the cheapest flights from Illinois to Seoul?

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

How can I find direct flights from Illinois to Seoul?

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

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

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Alternative routes for Illinois to Seoul

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Top 10 airlines flying from Illinois to Seoul

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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 abril 22, 2025.