How many flights depart from Illinois to Seoul on average per week?

As of August 2026, there are 14 flights per week flying from Illinois to Seoul. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

How long does it take to fly to Seoul?

If you’re flying from a popular airport in Illinois, such as Chicago or Moline, and flying into Seoul, then you can expect flight times to average 15h 50m and 27h 38m, respectively.

How many flights depart from Illinois to Seoul on average per day?

2 flights are operational daily from Illinois to Seoul as of August 2026. The most popular departure time for this route is 12:00PM, with 100% of flights per day taking off in the afternoon.

What airlines fly to Seoul?

Korean Air, EVA Air and Delta are the top three most popular airlines that fly to Seoul from Illinois according to our data. Korean Air is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 11 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Illinois to Seoul?

Air Canada, Delta, and United Airlines are the most popular carriers operating from Illinois to Seoul

When did momondo last update prices for flights from Illinois to Seoul?

Prices for flights from Illinois to Seoul refresh daily.

How many operators does momondo search for flights from Illinois to Seoul?

As of August 2026, there are 11 operators available to choose from for flights from Illinois to Seoul.

How old do you have to be to fly from Illinois to Seoul?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Seoul.

What documentation or ID do you need to fly to Seoul?

The required travel and health documents for your Seoul trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seoul. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$405 Cheap Flights from Illinois to Seoul in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Seoul

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:10 pm - 4:25 pmSTL Lambert-St Louis-ICN Incheon Intl

38h 15m1 stop Montreal Pierre Elliott Trudeau Intl

6:55 pm - 3:26 pmICN Incheon Intl-STL Lambert-St Louis

35h 31m2 stops Vancouver Intl Toronto Pearson Intl

$1,018Air Canada

Mon, Oct 5 - Wed, Nov 4

12:10 pm - 4:25 pmSTL Lambert-St Louis-ICN Incheon Intl

38h 15m1 stop Montreal Pierre Elliott Trudeau Intl

8:10 pm - 3:26 pmICN Incheon Intl-STL Lambert-St Louis

34h 16m1 stop Toronto Pearson Intl

$1,018Air Canada

Mon, Oct 5 - Wed, Nov 4

12:10 pm - 4:25 pmSTL Lambert-St Louis-ICN Incheon Intl

38h 15m1 stop Montreal Pierre Elliott Trudeau Intl

7:05 pm - 2:00 pmICN Incheon Intl-STL Lambert-St Louis

32h 55m1 stop Toronto Pearson Intl

$1,077Asiana Airlines

Mon, Sep 7 - Wed, Sep 16

2:40 pm - 5:30 pmSTL Lambert-St Louis-ICN Incheon Intl

36h 50m1 stop Toronto Pearson Intl

5:45 pm - 2:00 pmICN Incheon Intl-STL Lambert-St Louis

34h 15m2 stops Vancouver Intl Toronto Pearson Intl

$1,082Asiana Airlines

Wed, Sep 9 - Tue, Sep 15

12:30 am - 6:10 pmORD Chicago O'Hare Intl-GMP Seoul Gimpo Intl

27h 40m1 stop Taipei City Taiwan Taoyuan Intl

7:00 pm - 7:35 pmGMP Seoul Gimpo Intl-ORD Chicago O'Hare Intl

39h 35m1 stop Taipei City Sung Shan

$1,104EVA Air

Sun, Oct 4 - Tue, Nov 17

12:30 am - 7:15 pmORD Chicago O'Hare Intl-GMP Seoul Gimpo Intl

28h 45m1 stop Taipei City Taiwan Taoyuan Intl

7:00 pm - 7:35 pmGMP Seoul Gimpo Intl-ORD Chicago O'Hare Intl

39h 35m1 stop Taipei City Sung Shan

$1,104EVA Air

Mon, Oct 5 - Tue, Nov 17

3:34 pm - 12:40 pmSTL Lambert-St Louis-ICN Incheon Intl

31h 06m2 stops Dallas/Fort Worth Hong Kong Intl

1:55 am - 11:43 pmICN Incheon Intl-STL Lambert-St Louis

35h 48m2 stops Hong Kong Intl Dallas/Fort Worth

$1,106Cathay Pacific

Thu, Sep 10 - Tue, Sep 15

7:45 am - 4:20 pmSTL Lambert-St Louis-ICN Incheon Intl

17h 35m1 stop Salt Lake City

6:35 pm - 12:30 amICN Incheon Intl-STL Lambert-St Louis

20h 55m1 stop Salt Lake City

$1,107Delta

Tue, Nov 3 - Tue, Dec 8

6:00 am - 3:30 pmSTL Lambert-St Louis-ICN Incheon Intl

18h 30m1 stop Atlanta Hartsfield-Jackson

9:35 am - 4:36 pmICN Incheon Intl-STL Lambert-St Louis

22h 01m1 stop Detroit Metropolitan Wayne County

$1,107Delta

Mon, Nov 16 - Thu, Nov 26

4:15 pm - 5:30 amORD Chicago O'Hare Intl-ICN Incheon Intl

23h 15m1 stop Hong Kong Intl

7:35 pm - 1:55 pmICN Incheon Intl-ORD Chicago O'Hare Intl

32h 20m1 stop Hong Kong Intl

$1,179Cathay Pacific

Tue, Oct 20 - Sun, Oct 25

Cheap last minute flights

Enter your travel dates to find the best prices.

12:30 am - 6:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

28h 15m1 stop Taipei City Taiwan Taoyuan Intl

12:00 pm - 8:45 pmICN Incheon Intl-ORD Chicago O'Hare Intl

22h 45m1 stop Taipei City Taiwan Taoyuan Intl

$1,142Multiple Airlines

Wed, Aug 12 - Fri, Sep 11

5:30 pm - 6:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

35h 15m1 stop Calgary

2:35 am - 8:45 pmICN Incheon Intl-ORD Chicago O'Hare Intl

32h 10m3 stops Hong Kong Intl Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,195Multiple Airlines

Thu, Aug 13 - Wed, Sep 2

11:00 pm - 3:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

26h 45m2 stops Lambert-St Louis Dallas/Fort Worth

5:50 pm - 11:30 pmICN Incheon Intl-ORD Chicago O'Hare Intl

19h 40m1 stop Dallas/Fort Worth

$1,212American Airlines

Thu, Aug 13 - Fri, Sep 11

12:30 am - 6:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

28h 15m1 stop Taipei City Taiwan Taoyuan Intl

7:45 pm - 8:45 pmICN Incheon Intl-ORD Chicago O'Hare Intl

39h 00m1 stop Taipei City Taiwan Taoyuan Intl

$1,270EVA Air

Fri, Aug 14 - Tue, Sep 1

12:30 am - 6:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

28h 15m1 stop Taipei City Taiwan Taoyuan Intl

7:45 pm - 9:10 pmICN Incheon Intl-ORD Chicago O'Hare Intl

39h 25m1 stop Taipei City Taiwan Taoyuan Intl

$1,279EVA Air

Fri, Aug 14 - Sat, Aug 29

7:00 am - 3:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

18h 45m1 stop Dallas/Fort Worth

5:50 pm - 5:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

25h 40m2 stops Dallas/Fort Worth Indianapolis

$1,293American Airlines

Sat, Aug 15 - Tue, Sep 1

2:30 pm - 9:15 pmORD Chicago O'Hare Intl-GMP Seoul Gimpo Intl

16h 45m1 stop Tokyo Haneda

8:00 am - 10:45 amGMP Seoul Gimpo Intl-ORD Chicago O'Hare Intl

16h 45m1 stop Tokyo Haneda

$1,305Japan Airlines

Thu, Aug 13 - Thu, Sep 3

2:30 pm - 9:15 pmORD Chicago O'Hare Intl-GMP Seoul Gimpo Intl

16h 45m1 stop Tokyo Haneda

7:15 pm - 10:45 amGMP Seoul Gimpo Intl-ORD Chicago O'Hare Intl

29h 30m1 stop Tokyo Haneda

$1,315Japan Airlines

Thu, Aug 13 - Mon, Sep 14

4:40 pm - 4:20 amSTL Lambert-St Louis-ICN Incheon Intl

21h 40m2 stops Denver Intl San Francisco

11:30 am - 10:59 pmICN Incheon Intl-STL Lambert-St Louis

25h 29m2 stops San Francisco Chicago O'Hare Intl

$1,364United Airlines

Fri, Aug 14 - Sat, Aug 22

8:49 am - 4:05 pmORD Chicago O'Hare Intl-ICN Incheon Intl

17h 16m1 stop Vancouver Intl

5:45 pm - 5:06 pmICN Incheon Intl-ORD Chicago O'Hare Intl

37h 21m2 stops Vancouver Intl Calgary

$1,525Air Canada

Sun, Aug 16 - Tue, Aug 18

Cheap direct flights

Enter your travel dates to find the best prices.

12:10 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 40mnonstop

10:40 am - 9:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,754Korean Air

Thu, Sep 24 - Thu, Oct 1

12:10 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 40mnonstop

10:40 am - 9:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,774Korean Air

Thu, Sep 24 - Thu, Oct 1

12:10 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 40mnonstop

10:40 am - 9:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,776Korean Air

Mon, Sep 14 - Wed, Sep 23

12:30 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 20mnonstop

10:40 am - 9:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,776Korean Air

Mon, Aug 24 - Tue, Sep 8

12:10 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 40mnonstop

10:40 am - 9:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,779Korean Air

Thu, Sep 24 - Thu, Oct 1

12:10 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 40mnonstop

10:40 am - 9:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,865Delta

Thu, Sep 10 - Tue, Sep 15

12:15 pm - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 00mnonstop

10:40 am - 8:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,865Delta

Wed, Oct 28 - Tue, Nov 24

11:15 am - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 00mnonstop

10:40 am - 8:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,865Delta

Mon, Nov 2 - Mon, Nov 16

12:10 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 40mnonstop

10:40 am - 9:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,865Delta

Wed, Sep 23 - Mon, Sep 28

12:30 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 20mnonstop

10:40 am - 9:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$25,803Multiple Airlines

Sat, Aug 29 - Wed, Sep 2

Save money when you book flights with momondo

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Asiana Airlines flights from Illinois to Seoul

Our best Asiana Airlines deals on Illinois to Seoul flight tickets

Asiana Airlines

Sep 7

STL12:10 pmLambert-St Louis

38h 15m

1 stop

ICN4:25 pmIncheon Intl

Sep 16

ICN7:05 pmIncheon Intl

32h 55m

1 stop

STL2:00 pmLambert-St Louis

$1,077

Asiana Airlines

Sep 9

STL2:40 pmLambert-St Louis

36h 50m

1 stop

ICN5:30 pmIncheon Intl

Sep 15

ICN5:45 pmIncheon Intl

34h 15m

2 stops

STL2:00 pmLambert-St Louis

$1,082

Asiana Airlines

Sep 11

STL8:55 amLambert-St Louis

18h 35m

1 stop

ICN5:30 pmIncheon Intl

Sep 16

ICN7:05 pmIncheon Intl

32h 55m

1 stop

STL2:00 pmLambert-St Louis

$1,119

Cathay Pacific flights from Illinois to Seoul

Our best Cathay Pacific deals on Illinois to Seoul flight tickets

Cathay Pacific

Sep 10

STL3:34 pmLambert-St Louis

31h 06m

2 stops

ICN12:40 pmIncheon Intl

Sep 15

ICN1:55 amIncheon Intl

35h 48m

2 stops

STL11:43 pmLambert-St Louis

$1,106

Cathay Pacific

Oct 16

STL7:10 pmLambert-St Louis

37h 15m

2 stops

ICN10:25 pmIncheon Intl

Oct 25

ICN3:00 pmIncheon Intl

43h 57m

2 stops

STL8:57 pmLambert-St Louis

$1,155

Cathay Pacific

Oct 16

STL7:10 pmLambert-St Louis

28h 55m

2 stops

ICN2:05 pmIncheon Intl

Oct 25

ICN3:00 pmIncheon Intl

44h 59m

2 stops

STL9:59 pmLambert-St Louis

$1,156

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 10/5

12:10 pm-4:25 pm

1 stop38h 15m

Incheon Intl

Wed 11/4

6:55 pm-3:26 pm

2 stops35h 31m

$1,018

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 10/5

12:10 pm-4:25 pm

1 stop38h 15m

Incheon Intl

Wed 11/4

8:10 pm-3:26 pm

1 stop34h 16m

$1,018

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 9/7

12:10 pm-4:25 pm

1 stop38h 15m

Incheon Intl

Wed 9/16

7:05 pm-2:00 pm

1 stop32h 55m

$1,077

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Wed 9/9

2:40 pm-5:30 pm

1 stop36h 50m

Incheon Intl

Tue 9/15

5:45 pm-2:00 pm

2 stops34h 15m

$1,082

ChicagoSeoul

ORD Chicago O'Hare Intl - GMP Seoul Gimpo Intl

ORDGMP

Chicago O'Hare Intl

Sun 10/4

12:30 am-6:10 pm

1 stop27h 40m

Seoul Gimpo Intl

Tue 11/17

7:00 pm-7:35 pm

1 stop39h 35m

$1,104

ChicagoSeoul

ORD Chicago O'Hare Intl - GMP Seoul Gimpo Intl

ORDGMP

Chicago O'Hare Intl

Mon 10/5

12:30 am-7:15 pm

1 stop28h 45m

Seoul Gimpo Intl

Tue 11/17

7:00 pm-7:35 pm

1 stop39h 35m

$1,104

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Thu 9/10

3:34 pm-12:40 pm

2 stops31h 06m

Incheon Intl

Tue 9/15

1:55 am-11:43 pm

2 stops35h 48m

$1,106

Quickest round-trip

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 11/3

7:45 am-4:20 pm

1 stop17h 35m

Incheon Intl

Tue 12/8

6:35 pm-12:30 am

1 stop20h 55m

$1,107

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 11/16

6:00 am-3:30 pm

1 stop18h 30m

Incheon Intl

Thu 11/26

9:35 am-4:36 pm

1 stop22h 01m

$1,107

ChicagoIncheon

ORD Chicago O'Hare Intl - ICN Incheon Intl

ORDICN

Chicago O'Hare Intl

Tue 10/20

4:15 pm-5:30 am

1 stop23h 15m

Incheon Intl

Sun 10/25

7:35 pm-1:55 pm

1 stop32h 20m

$1,179

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Seoul

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Seoul?

The month of October is another great option to travel to Seoul, with average flight prices from Illinois averaging around $1,273.

What is the cheapest day to depart on your flight to Seoul?

According to our data, Tuesday is the cheapest day to fly to Seoul from Illinois. The lowest ticket price found for a Tuesday departure recently was $936. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Saturday, with ticket prices averaging around $1,148.

What is the cheapest Illinois to Seoul flight route?

Fly from Chicago O'Hare Intl to Incheon Intl for the best Illinois - Seoul flight prices

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

You are more likely to see cheaper flights to Seoul from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around $1,514 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from Illinois for as low as $945 on momondo.

What cabin class options are available on Illinois to Seoul flights?

There are 4 cabin classes available to choose from on Illinois to Seoul flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Seoul flights?

You could potentially save up to 10% on your flight if you consider stops on a Illinois to Seoul flight.

Cheap Illinois to Seoul flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Seoul

Best Price Found	$500
Fastest flight time	14h 20m
Direct flights	Every day
Airports in Seoul	2 airports

The best one-way flight to Seoul from Illinois in the past 72 hours is $500. The best round-trip flight deal from Illinois to Seoul found on momondo in the last 72 hours is $951.

The fastest flight from Illinois to Seoul takes 14h 20m

Direct flights go from Illinois to Seoul every day.

There are 2 airports in Seoul. From Illinois there are direct flights to Incheon Intl (ICN).

Search flight deals

Frequently asked questions about flying from Illinois to Seoul

When did momondo last update prices for flights from Illinois to Seoul?
Prices for flights from Illinois to Seoul refresh daily.
How many operators does momondo search for flights from Illinois to Seoul?
As of August 2026, there are 11 operators available to choose from for flights from Illinois to Seoul.
How old do you have to be to fly from Illinois to Seoul?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Seoul.
What documentation or ID do you need to fly to Seoul?
The required travel and health documents for your Seoul trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seoul. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Illinois to Seoul?
Based on momondo bookings for flights between Illinois and Seoul, the leading plane model is Boeing 777-300ER, making up 82.14% of the total bookings. Other popular models include Airbus A350-900 with 9.23%, Boeing 777 with 5.65%, and Boeing 787-10 Dreamliner with 0.60%.

Best airlines flying from Illinois to Seoul

Compare and see reviews for airlines that fly from Illinois to Seoul with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $194	Free Cancellation	Rating 7.8 8,503 reviews	Search Delta flights
Cathay Pacific	PriceFrom $639	Free Cancellation	Rating 7.6 1,451 reviews	Search Cathay Pacific flights
Turkish Airlines	PriceFrom $845	Free Cancellation	Rating 7.4 4,481 reviews	Search Turkish Airlines flights
American Airlines	PriceFrom $916	Free Cancellation	Rating 7.1 11,918 reviews	Search American Airlines flights
Japan Airlines	PriceFrom $931	Free Cancellation	Rating 8.3 1,901 reviews	Search Japan Airlines flights
EVA Air	PriceFrom $947	Free Cancellation	Rating 8.5 1,515 reviews	Search EVA Air flights
Air Canada	PriceFrom $1,072	Free Cancellation	Rating 7.1 11,466 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $1,148	Free Cancellation	Rating 8.1 556 reviews	Search Asiana Airlines flights
Finnair	PriceFrom $1,174	Free Cancellation	Rating 7.6 1,426 reviews	Search Finnair flights
United Airlines	PriceFrom $1,191	Free Cancellation	Rating 7.4 10,115 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Seoul?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Seoul. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Illinois to Seoul with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seoul from Illinois with this policy.

How can momondo help me find flights from Illinois to Seoul?

momondo provides multiple filters to help you find the best flight to Seoul from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Illinois to Seoul right now. Can momondo alert me if prices change?

Price alerts on flights to Seoul from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Seoul trip

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Fly into one of these airports located in Seoul

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Cheap flights from Illinois to Seoul from $405

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Seoul departing on 10/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Cheap last minute flights

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Asiana Airlines flights from Illinois to Seoul

Our best Asiana Airlines deals on Illinois to Seoul flight tickets

Cathay Pacific flights from Illinois to Seoul

Our best Cathay Pacific deals on Illinois to Seoul flight tickets

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

See travel insights to Seoul from

How to get the cheapest flight ticket from Illinois to Seoul

What is the cheapest month to fly to Seoul?

What is the cheapest day to depart on your flight to Seoul?

What is the cheapest Illinois to Seoul flight route?

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

What cabin class options are available on Illinois to Seoul flights?

Can stopping save me money on Illinois to Seoul flights?

What is the cheapest airline that flies from Illinois to Seoul?

What airlines fly to Seoul?

How many flights depart from Illinois to Seoul on average per day?

How many flights depart from Illinois to Seoul on average per week?

How long does it take to fly to Seoul?

Cheap Illinois to Seoul flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Seoul

Frequently asked questions about flying from Illinois to Seoul

Best airlines flying from Illinois to Seoul

Compare and see reviews for airlines that fly from Illinois to Seoul with momondo

Why use momondo?

An easier way to manage your Seoul trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul

Fly your favorite airline to Seoul

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Seoul

List of cabin classes available on flights landing in Seoul. Availability may vary depending on flight origin and airline.

Popular cities in South Korea

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Illinois

According to popular flight searches on momondo this year

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