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

14 flights are operational weekly from Illinois to South Korea as of February 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

How long is the flight from Illinois to South Korea?

The flight from Illinois to South Korea depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Chicago (a popular airport in Illinois) to Incheon Intl Airport (the most popular airport in South Korea), then the flight time is 15h 47m on average. If you fly from Moline (another popular airport in Illinois) to Incheon Intl Airport, then the average flight time is 29h 51m.

What is the cheapest airline that flies from Illinois to South Korea?

United Airlines, Delta, and Japan Airlines are the most popular carriers operating from Illinois to South Korea

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

2 flights are operational daily from Illinois to South Korea as of February 2026. The most popular departure time for this route is 11:00AM, with 100% of flights per day taking off at noon.

What airlines fly to South Korea?

Korean Air, Delta and EVA Air are the top three most popular airlines that fly to South Korea from Illinois according to our data. Korean Air is the first choice among our users, with 47% of people opting to fly with this airline when traveling to South Korea. Keep in mind that there are 9 different airlines that fly to South Korea on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Illinois to South Korea were last updated today.

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

As of February 2026, there are 9 operators available to choose from for flights from Illinois to South Korea.

How old do you have to be to fly from Illinois to South Korea?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to South Korea.

What documentation or ID do you need to fly to South Korea?

The travel and health documents you'll need for your trip to South Korea may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at South Korea. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$327 Cheap Flights from Illinois to South Korea in 2026

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Find the cheapest flights from Illinois to South Korea

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:51 pm - 5:40 am

ORD

ICN

19h 49m

1 stop

6:00 pm - 6:47 am

ICN

ORD

26h 47m

2 stops

$731Multiple Airlines

Mo, Mrz 2 - Mo, Apr 27

7:00 am - 6:35 pm

STL

ICN

20h 35m

1 stop

8:35 pm - 1:51 pm

ICN

STL

31h 16m

1 stop

$739Multiple Airlines

Mi, Mrz 4 - Mo, Mrz 9

7:00 am - 6:35 pm

STL

ICN

21h 35m

1 stop

8:35 pm - 11:59 pm

ICN

STL

17h 24m

1 stop

$767Multiple Airlines

So, Mrz 22 - Do, Apr 2

7:12 am - 3:45 pm

STL

ICN

18h 33m

1 stop

5:50 pm - 10:59 pm

ICN

STL

19h 09m

1 stop

$817American Airlines

Mo, Apr 13 - Do, Apr 23

4:30 pm - 4:40 am

STL

ICN

22h 10m

2 stops

5:00 pm - 11:34 pm

ICN

STL

20h 34m

2 stops

$871United Airlines

Di, Mrz 10 - Di, Mrz 17

6:11 pm - 3:45 pm

STL

ICN

31h 34m

1 stop

5:50 pm - 8:24 am

ICN

STL

28h 34m

2 stops

$877American Airlines

So, Apr 12 - Do, Apr 30

11:15 am - 4:20 am

STL

ICN

27h 05m

2 stops

11:30 am - 10:28 pm

ICN

STL

24h 58m

2 stops

$897United Airlines

Mi, Apr 15 - Mi, Apr 22

6:40 pm - 10:55 am

ORD

GMP

26h 15m

1 stop

8:00 am - 11:00 am

GMP

ORD

17h 00m

1 stop

$989Japan Airlines

Di, Mrz 10 - Mi, Mai 13

6:40 pm - 10:55 am

ORD

GMP

26h 15m

1 stop

8:00 am - 2:45 pm

GMP

ORD

20h 45m

1 stop

$998Japan Airlines

Mo, Mrz 9 - Mo, Mrz 16

9:45 am - 8:45 pm

STL

PUS

21h 00m

2 stops

8:00 am - 11:58 pm

PUS

STL

29h 58m

2 stops

$1,410Delta

So, Mrz 29 - So, Apr 5

Turkish Airlines flights from Illinois to South Korea

Our best Turkish Airlines deals on Illinois to South Korea flight tickets

Turkish Airlines

Mar 2

ORD8:20 pmChicago O'Hare Intl

31h 00m

1 stop

ICN6:20 pmIncheon Intl

Mar 10

ICN12:10 amIncheon Intl

33h 15m

1 stop

ORD7:25 pmChicago O'Hare Intl

$818

Turkish Airlines

Mar 5

ORD11:50 amChicago O'Hare Intl

39h 30m

1 stop

ICN6:20 pmIncheon Intl

Mar 11

ICN12:10 amIncheon Intl

24h 55m

1 stop

ORD11:05 amChicago O'Hare Intl

$819

Turkish Airlines

Apr 20

ORD11:25 amChicago O'Hare Intl

31h 10m

1 stop

ICN8:35 amIncheon Intl

May 8

ICN10:15 amIncheon Intl

37h 25m

1 stop

ORD9:40 amChicago O'Hare Intl

$828

United Airlines flights from Illinois to South Korea

Our best United Airlines deals on Illinois to South Korea flight tickets

United Airlines

Feb 16

STL8:17 amLambert-St Louis

30h 23m

2 stops

ICN5:40 amIncheon Intl

Feb 20

ICN6:00 pmIncheon Intl

17h 26m

2 stops

STL8:26 pmLambert-St Louis

$821

United Airlines

Feb 16

STL5:25 pmLambert-St Louis

21h 15m

1 stop

ICN5:40 amIncheon Intl

Feb 20

ICN12:45 pmIncheon Intl

18h 59m

1 stop

STL4:44 pmLambert-St Louis

$867

United Airlines

Mar 10

STL4:30 pmLambert-St Louis

22h 10m

2 stops

ICN4:40 amIncheon Intl

Mar 17

ICN5:00 pmIncheon Intl

20h 34m

2 stops

STL11:34 pmLambert-St Louis

$871

Fly from

Fly to

Route

Depart

Return

Price

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Mo 3/2

6:51 pm-5:40 am

1 stop19h 49m

Incheon Intl

Mo 4/27

6:00 pm-6:47 am

2 stops26h 47m

$731

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mi 3/4

7:00 am-6:35 pm

1 stop20h 35m

Incheon Intl

Mo 3/9

8:35 pm-1:51 pm

1 stop31h 16m

$739

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

So 3/22

7:00 am-6:35 pm

1 stop21h 35m

Incheon Intl

Do 4/2

8:35 pm-11:59 pm

1 stop17h 24m

$767

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mo 4/13

7:12 am-3:45 pm

1 stop18h 33m

Incheon Intl

Do 4/23

5:50 pm-10:59 pm

1 stop19h 09m

$817

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Di 3/10

4:30 pm-4:40 am

2 stops22h 10m

Incheon Intl

Di 3/17

5:00 pm-11:34 pm

2 stops20h 34m

$871

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

So 4/12

6:11 pm-3:45 pm

1 stop31h 34m

Incheon Intl

Do 4/30

5:50 pm-8:24 am

2 stops28h 34m

$877

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mi 4/15

11:15 am-4:20 am

2 stops27h 05m

Incheon Intl

Mi 4/22

11:30 am-10:28 pm

2 stops24h 58m

$897

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Di 3/10

6:40 pm-10:55 am

1 stop26h 15m

Seoul Gimpo Intl

Mi 5/13

8:00 am-11:00 am

1 stop17h 00m

$989

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Mo 3/9

6:40 pm-10:55 am

1 stop26h 15m

Seoul Gimpo Intl

Mo 3/16

8:00 am-2:45 pm

1 stop20h 45m

$998

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

So 3/29

9:45 am-8:45 pm

2 stops21h 00m

Busan Gimhae

So 4/5

8:00 am-11:58 pm

2 stops29h 58m

$1,410

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 South Korea

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 South Korea?

If you aren’t able to travel to South Korea during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $924.

What is the cheapest day to depart on your flight to South Korea?

On average, the least expensive day to fly to South Korea from Illinois is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $921. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to South Korea for around $1,127.

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

Flying to South Korea from Illinois in the evening is the least expensive time of day to depart. momondo users have found prices as low as $982 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,032 on average. Flights to South Korea from Illinois in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Illinois to South Korea flight route?

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

How far in advance should I book a flight to South Korea?

You are more likely to see cheaper flights to South Korea from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around $1,528 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Korea from Illinois for as low as $827 on momondo.

What cabin class options are available on Illinois to South Korea flights?

There are 4 cabin classes available to choose from on Illinois to South Korea 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 South Korea flights?

You could potentially save up to 2% on your flight if you consider stops on a Illinois to South Korea flight.

Cheap Illinois to South Korea flight deals and tips

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

Best Price Found	$470
Fastest flight time	14h 20m
Direct flights	Every day
Airports in South Korea	24 airports

The best one-way flight to South Korea from Illinois in the past 72 hours is $470. The best round-trip flight deal from Illinois to South Korea found on momondo in the last 72 hours is $814.

The fastest flight from Illinois to South Korea takes 14h 20m

Direct flights go from Illinois to South Korea every day.

There are 24 airports in South Korea. From Illinois there are direct flights to Incheon Intl (ICN).

Search flight deals

When did momondo last update prices for flights from Illinois to South Korea?
Prices for flights from Illinois to South Korea were last updated today.
How many operators does momondo search for flights from Illinois to South Korea?
As of February 2026, there are 9 operators available to choose from for flights from Illinois to South Korea.
How old do you have to be to fly from Illinois to South Korea?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to South Korea.
What documentation or ID do you need to fly to South Korea?
The travel and health documents you'll need for your trip to South Korea may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at South Korea. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Illinois to South Korea?
momondo data reveals that the most frequently booked plane model on the route from Illinois to South Korea is Boeing 777-300ER, representing 92.13% of all bookings. The subsequent popular models are Airbus A350-900 at 2.25%, Boeing 787-10 Dreamliner at 1.50%, and Boeing 777-300 at 1.50%.

Best airlines flying from Illinois to South Korea

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,191 reviews	Search Delta flights
United Airlines	PriceFrom $287	Free Cancellation	Rating 7.4 9,286 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $639	Free Cancellation	Rating 7.6 1,162 reviews	Search Cathay Pacific flights
Turkish Airlines	PriceFrom $877	Free Cancellation	Rating 7.3 4,212 reviews	Search Turkish Airlines flights
American Airlines	PriceFrom $915	Free Cancellation	Rating 7.2 11,277 reviews	Search American Airlines flights
EVA Air	PriceFrom $1,003	Free Cancellation	Rating 8.4 1,353 reviews	Search EVA Air flights
Air Canada	PriceFrom $1,098	Free Cancellation	Rating 7.1 10,717 reviews	Search Air Canada flights
Finnair	PriceFrom $1,259	Free Cancellation	Rating 7.6 1,362 reviews	Search Finnair flights
Korean Air	PriceFrom $1,559	Free Cancellation	Rating 8.4 1,191 reviews	Search Korean Air flights

Why use momondo?

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

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

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

momondo does allow users to show only those flights to South Korea from Illinois which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Illinois to South Korea?

momondo helps you find the best flight between Illinois and South Korea by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Illinois to South Korea now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to South Korea and let you know when they change.

An easier way to manage your South Korea 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.

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Popular cities in South Korea

Flights to Seoulfrom $522

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Flights to Daegufrom $965

Flights to Yeosu

Flights to Gwangjufrom $1,799

Flights to Jinjufrom $1,747

Flights to Muan

Flights to Ulsanfrom $1,003

Cheap flights from Illinois to South Korea from $327

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 South Korea departing on 3/2. 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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Turkish Airlines flights from Illinois to South Korea

Our best Turkish Airlines deals on Illinois to South Korea flight tickets

United Airlines flights from Illinois to South Korea

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How to get the cheapest flight ticket from Illinois to South Korea

What is the cheapest month to fly to South Korea?

What is the cheapest day to depart on your flight to South Korea?

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

What is the cheapest Illinois to South Korea flight route?

How far in advance should I book a flight to South Korea?

What cabin class options are available on Illinois to South Korea flights?

Can stopping save me money on Illinois to South Korea flights?

What is the cheapest airline that flies from Illinois to South Korea?

What airlines fly to South Korea?

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

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

How long is the flight from Illinois to South Korea?

Cheap Illinois to South Korea flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in South Korea

Best airlines flying from Illinois to South Korea

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

Why use momondo?

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

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

How can momondo help me find flights from Illinois to South Korea?

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

An easier way to manage your South Korea 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

Popular cities in South Korea

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

Illinois flight routes

According to popular flight searches on momondo this year

South Korea flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to South Korea

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

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