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

Cathay Pacific, EVA Air, and United Airlines are the most popular carriers operating from Illinois to Seoul

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

2 flights are operational daily from Illinois to Seoul as of September 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 33% 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.

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 20h 30m and 29h 15m, respectively.

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

As of September 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.

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 September 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.

$438 Cheap Flights from Illinois to Seoul in 2026/27

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.

9:45 am - 3:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

39h 00m1 stop Addis Ababa Bole

12:05 am - 7:40 amICN Incheon Intl-ORD Chicago O'Hare Intl

46h 35m1 stop Addis Ababa Bole

$849Ethiopian Air

Sat, Nov 21 - Sat, Nov 28

9:45 am - 3:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

39h 00m1 stop Addis Ababa Bole

12:05 am - 7:40 amICN Incheon Intl-ORD Chicago O'Hare Intl

46h 35m2 stops Addis Ababa Bole Rome Fiumicino

$852Ethiopian Air

Sat, Nov 21 - Sat, Nov 28

11:45 am - 6:20 pmORD Chicago O'Hare Intl-ICN Incheon Intl

39h 35m1 stop Istanbul

12:05 am - 6:20 pmICN Incheon Intl-ORD Chicago O'Hare Intl

33h 15m1 stop Istanbul

$901Turkish Airlines

Thu, Dec 3 - Tue, Dec 15

8:10 pm - 8:35 amORD Chicago O'Hare Intl-ICN Incheon Intl

22h 25m1 stop Istanbul

10:40 am - 10:00 amICN Incheon Intl-ORD Chicago O'Hare Intl

38h 20m1 stop Istanbul

$939Turkish Airlines

Mon, Oct 19 - Mon, Jan 18

3:35 pm - 5:10 pmORD Chicago O'Hare Intl-ICN Incheon Intl

34h 35m1 stop Vancouver Intl

6:55 pm - 2:32 pmICN Incheon Intl-ORD Chicago O'Hare Intl

34h 37m1 stop Vancouver Intl

$1,063Air Canada

Sun, Jan 17 - Wed, Jan 27

3:35 pm - 5:10 pmORD Chicago O'Hare Intl-ICN Incheon Intl

34h 35m1 stop Vancouver Intl

6:55 pm - 2:32 pmICN Incheon Intl-ORD Chicago O'Hare Intl

34h 37m1 stop Vancouver Intl

$1,063Air Canada

Wed, Jan 27 - Tue, Feb 16

6:13 am - 1:50 pmPIA Greater Peoria-ICN Incheon Intl

41h 37m2 stops Chicago O'Hare Intl Hong Kong Intl

8:00 am - 12:10 amICN Incheon Intl-PIA Greater Peoria

30h 10m2 stops Hong Kong Intl Chicago O'Hare Intl

$1,065Cathay Pacific

Mon, Mar 22 - Thu, Apr 1

6:13 am - 12:45 pmPIA Greater Peoria-ICN Incheon Intl

40h 32m2 stops Chicago O'Hare Intl Hong Kong Intl

8:00 am - 12:10 amICN Incheon Intl-PIA Greater Peoria

30h 10m2 stops Hong Kong Intl Chicago O'Hare Intl

$1,065Cathay Pacific

Tue, Mar 23 - Thu, Apr 1

12:30 am - 10:30 amORD Chicago O'Hare Intl-ICN Incheon Intl

20h 00m1 stop Taipei City Taiwan Taoyuan Intl

7:45 pm - 7:35 pmICN Incheon Intl-ORD Chicago O'Hare Intl

38h 50m1 stop Taipei City Taiwan Taoyuan Intl

$1,086EVA Air

Mon, Oct 26 - Tue, Nov 3

12:30 am - 10:30 amORD Chicago O'Hare Intl-ICN Incheon Intl

20h 00m1 stop Taipei City Taiwan Taoyuan Intl

11:40 am - 7:35 pmICN Incheon Intl-ORD Chicago O'Hare Intl

22h 55m1 stop Taipei City Taiwan Taoyuan Intl

$1,102EVA Air

Mon, Oct 26 - Tue, Nov 3

Cheap last minute flights

Enter your travel dates to find the best prices.

6:55 am - 6:00 amORD Chicago O'Hare Intl-ICN Incheon Intl

33h 05m2 stops Los Angeles Manila Ninoy Aquino Intl

7:20 am - 12:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

31h 10m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,112Multiple Airlines

Thu, Oct 1 - Mon, Oct 5

6:55 am - 6:00 amORD Chicago O'Hare Intl-ICN Incheon Intl

33h 05m2 stops Los Angeles Manila Ninoy Aquino Intl

7:20 am - 12:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

31h 10m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,113Multiple Airlines

Thu, Oct 1 - Mon, Oct 5

12:30 am - 11:00 amORD Chicago O'Hare Intl-ICN Incheon Intl

20h 30m1 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

$1,121EVA Air

Wed, Sep 30 - Mon, Oct 5

12:30 am - 12:10 pmORD Chicago O'Hare Intl-ICN Incheon Intl

21h 40m1 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

$1,138EVA Air

Wed, Sep 30 - Thu, Oct 8

4:15 pm - 7:05 pmORD Chicago O'Hare Intl-ICN Incheon Intl

36h 50m1 stop Hong Kong Intl

1:55 am - 1:55 pmICN Incheon Intl-ORD Chicago O'Hare Intl

26h 00m1 stop Hong Kong Intl

$1,244Cathay Pacific

Sun, Oct 4 - Mon, Oct 12

4:15 pm - 10:25 pmORD Chicago O'Hare Intl-ICN Incheon Intl

40h 10m1 stop Hong Kong Intl

8:00 am - 1:55 pmICN Incheon Intl-ORD Chicago O'Hare Intl

19h 55m1 stop Hong Kong Intl

$1,244Cathay Pacific

Fri, Oct 2 - Thu, Oct 15

11:05 pm - 3:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

26h 40m2 stops Lambert-St Louis Dallas/Fort Worth

5:50 pm - 11:59 pmICN Incheon Intl-ORD Chicago O'Hare Intl

20h 09m1 stop Dallas/Fort Worth

$1,319American Airlines

Sun, Oct 4 - Tue, Oct 13

10:15 am - 9:15 pmORD Chicago O'Hare Intl-GMP Seoul Gimpo Intl

21h 00m1 stop Tokyo Narita

8:15 am - 10:00 amGMP Seoul Gimpo Intl-ORD Chicago O'Hare Intl

16h 45m1 stop Tokyo Haneda

$1,633Japan Airlines

Mon, Oct 5 - Mon, Nov 2

10:15 am - 9:15 pmORD Chicago O'Hare Intl-GMP Seoul Gimpo Intl

21h 00m1 stop Tokyo Narita

7:40 pm - 7:30 amGMP Seoul Gimpo Intl-ORD Chicago O'Hare Intl

26h 50m1 stop Tokyo Haneda

$1,707Japan Airlines

Mon, Oct 5 - Sun, Nov 1

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

14h 40mnonstop

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

12h 50mnonstop

$2,663Delta

Mon, Oct 5 - Mon, Nov 2

Cheap direct flights

Enter your travel dates to find the best prices.

11:10 am - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

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

12h 50mnonstop

$1,717Korean Air

Wed, Nov 4 - Sun, Feb 7

12:10 pm - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

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

12h 50mnonstop

$1,722Korean Air

Mon, Oct 26 - Mon, Nov 9

11:10 am - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

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

12h 50mnonstop

$1,723Korean Air

Mon, Nov 16 - Tue, Dec 1

12:10 pm - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

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

12h 50mnonstop

$1,723Korean Air

Mon, Oct 26 - Mon, Nov 9

11:10 am - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

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

12h 50mnonstop

$1,815Delta

Wed, Feb 24 - Wed, Mar 10

11:10 am - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

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

12h 50mnonstop

$1,815Delta

Mon, Nov 2 - Mon, Nov 16

11:10 am - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

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

12h 50mnonstop

$1,815Delta

Wed, Jan 27 - Tue, Feb 16

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

14h 40mnonstop

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

12h 50mnonstop

$10,104Multiple Airlines

Thu, Oct 22 - Tue, Nov 10

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

$10,329Multiple Airlines

Sun, Oct 18 - Wed, Oct 28

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

$11,004Multiple Airlines

Mon, Oct 19 - Tue, Oct 27

Save money when you book flights with momondo

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Ethiopian Air flights from Illinois to Seoul

Our best Ethiopian Air deals on Illinois to Seoul flight tickets

Ethiopian Air

Nov 21

ORD9:45 amChicago O'Hare Intl

39h 00m

1 stop

ICN3:45 pmIncheon Intl

Nov 28

ICN12:05 amIncheon Intl

46h 35m

1 stop

ORD7:40 amChicago O'Hare Intl

$849

Ethiopian Air

Nov 21

ORD9:45 amChicago O'Hare Intl

39h 00m

1 stop

ICN3:45 pmIncheon Intl

Nov 28

ICN12:05 amIncheon Intl

46h 35m

2 stops

ORD7:40 amChicago O'Hare Intl

$852

Ethiopian Air

Oct 17

ORD10:15 amChicago O'Hare Intl

39h 45m

1 stop

ICN4:00 pmIncheon Intl

Oct 29

ICN12:05 amIncheon Intl

46h 35m

2 stops

ORD8:40 amChicago O'Hare Intl

$856

Cathay Pacific flights from Illinois to Seoul

Our best Cathay Pacific deals on Illinois to Seoul flight tickets

Cathay Pacific

Feb 4

PIA5:42 amGreater Peoria

41h 08m

2 stops

ICN1:50 pmIncheon Intl

Feb 17

ICN7:35 pmIncheon Intl

36h 24m

2 stops

PIA4:59 pmGreater Peoria

$1,065

Cathay Pacific

Mar 21

PIA5:30 pmGreater Peoria

65h 10m

2 stops

ICN12:40 amIncheon Intl

Apr 1

ICN8:00 amIncheon Intl

30h 10m

2 stops

PIA12:10 amGreater Peoria

$1,071

Cathay Pacific

Feb 2

PIA5:42 amGreater Peoria

40h 03m

2 stops

ICN12:45 pmIncheon Intl

Feb 16

ICN1:55 amIncheon Intl

30h 04m

2 stops

PIA4:59 pmGreater Peoria

$1,083

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoIncheon

ORD Chicago O'Hare Intl - ICN Incheon Intl

ORDICN

Chicago O'Hare Intl

Sat 11/21

9:45 am-3:45 pm

1 stop39h 00m

Incheon Intl

Sat 11/28

12:05 am-7:40 am

1 stop46h 35m

$849

ChicagoIncheon

ORD Chicago O'Hare Intl - ICN Incheon Intl

ORDICN

Chicago O'Hare Intl

Sat 11/21

9:45 am-3:45 pm

1 stop39h 00m

Incheon Intl

Sat 11/28

12:05 am-7:40 am

2 stops46h 35m

$852

ChicagoIncheon

ORD Chicago O'Hare Intl - ICN Incheon Intl

ORDICN

Chicago O'Hare Intl

Thu 12/3

11:45 am-6:20 pm

1 stop39h 35m

Incheon Intl

Tue 12/15

12:05 am-6:20 pm

1 stop33h 15m

$901

ChicagoIncheon

ORD Chicago O'Hare Intl - ICN Incheon Intl

ORDICN

Chicago O'Hare Intl

Mon 10/19

8:10 pm-8:35 am

1 stop22h 25m

Incheon Intl

Mon 1/18

10:40 am-10:00 am

1 stop38h 20m

$939

ChicagoIncheon

ORD Chicago O'Hare Intl - ICN Incheon Intl

ORDICN

Chicago O'Hare Intl

Sun 1/17

3:35 pm-5:10 pm

1 stop34h 35m

Incheon Intl

Wed 1/27

6:55 pm-2:32 pm

1 stop34h 37m

$1,063

ChicagoIncheon

ORD Chicago O'Hare Intl - ICN Incheon Intl

ORDICN

Chicago O'Hare Intl

Wed 1/27

3:35 pm-5:10 pm

1 stop34h 35m

Incheon Intl

Tue 2/16

6:55 pm-2:32 pm

1 stop34h 37m

$1,063

PeoriaIncheon

PIA Greater Peoria - ICN Incheon Intl

PIAICN

Greater Peoria

Mon 3/22

6:13 am-1:50 pm

2 stops41h 37m

Incheon Intl

Thu 4/1

8:00 am-12:10 am

2 stops30h 10m

$1,065

PeoriaIncheon

PIA Greater Peoria - ICN Incheon Intl

PIAICN

Greater Peoria

Tue 3/23

6:13 am-12:45 pm

2 stops40h 32m

Incheon Intl

Thu 4/1

8:00 am-12:10 am

2 stops30h 10m

$1,065

ChicagoIncheon

ORD Chicago O'Hare Intl - ICN Incheon Intl

ORDICN

Chicago O'Hare Intl

Mon 10/26

12:30 am-10:30 am

1 stop20h 00m

Incheon Intl

Tue 11/3

7:45 pm-7:35 pm

1 stop38h 50m

$1,086

Quickest round-trip

ChicagoIncheon

ORD Chicago O'Hare Intl - ICN Incheon Intl

ORDICN

Chicago O'Hare Intl

Mon 10/26

12:30 am-10:30 am

1 stop20h 00m

Incheon Intl

Tue 11/3

11:40 am-7:35 pm

1 stop22h 55m

$1,102

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 January 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 $964. 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 $1,165.

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

Flying to Seoul from Illinois in the evening is the least expensive time of day to depart. momondo users have found prices as low as $868 when looking at flights departing in the evening. In the morning is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,038 per ticket.

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 $1,521 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 $987 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 13% 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	$438
Fastest flight time	14h 40m
Direct flights	Every day
Airports in Seoul	2 airports

The best one-way flight to Seoul from Illinois in the past 72 hours is $438. The best round-trip flight deal from Illinois to Seoul found on momondo in the last 72 hours is $849.

The fastest flight from Illinois to Seoul takes 14h 40m

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 September 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 81.94% of the total bookings. Other popular models include Airbus A350-900 with 11.61%, Boeing 777 with 3.23%, and Boeing 787-10 Dreamliner with 0.65%.

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 $293	Free Cancellation	Rating 7.8 8,610 reviews	Search Delta flights
Turkish Airlines	PriceFrom $845	Free Cancellation	Rating 7.4 4,453 reviews	Search Turkish Airlines flights
Cathay Pacific	PriceFrom $865	Free Cancellation	Rating 7.6 1,506 reviews	Search Cathay Pacific flights
American Airlines	PriceFrom $916	Free Cancellation	Rating 7.0 12,100 reviews	Search American Airlines flights
Japan Airlines	PriceFrom $942	Free Cancellation	Rating 8.3 1,931 reviews	Search Japan Airlines flights
EVA Air	PriceFrom $948	Free Cancellation	Rating 8.5 1,537 reviews	Search EVA Air flights
Asiana Airlines	PriceFrom $1,148	Free Cancellation	Rating 8.1 563 reviews	Search Asiana Airlines flights
Finnair	PriceFrom $1,174	Free Cancellation	Rating 7.6 1,432 reviews	Search Finnair flights
United Airlines	PriceFrom $1,191	Free Cancellation	Rating 7.4 10,256 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,464	Free Cancellation	Rating 7.1 11,704 reviews	Search Air Canada 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

Seoul Gimpo Intl Airport

Incheon Intl Airport

Cheap flights from Illinois to Seoul from $438

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 11/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Illinois to Seoul

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Ethiopian Air flights from Illinois to Seoul

Our best Ethiopian Air 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 time of 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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