What airlines fly to Illinois?

Korean Air, Delta and Air Canada are the top three most popular airlines that fly to Illinois from South Korea according to our data. Korean Air is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

As of December 2025, there are 1 flights per day flying from South Korea to Illinois. The most common time of day flights depart is 10:00AM, with 100% of flights taking off at noon.

How long is the flight from South Korea to Illinois?

The flight from South Korea to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Incheon (a popular airport in South Korea) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 12h 50m on average. If you fly from Seoul (another popular airport in South Korea) to Chicago O'Hare Intl Airport, then the average flight time is 15h 20m.

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

As of December 2025, 12 flights take off from South Korea and land in Illinois each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

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

American Airlines, Air Canada, and Japan Airlines are the most popular carriers operating from South Korea to Illinois

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

Prices for flights from South Korea to Illinois are refreshed on a daily basis.

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

As of December 2025, there are 7 operators available to choose from for flights from South Korea to Illinois.

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

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 South Korea to Illinois.

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

The required travel and health documents for your Illinois 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 Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$376 Cheap Flights from South Korea to Illinois in 2025/26

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Find the cheapest flights from South Korea to Illinois

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Recent round-trip flight deals from South Korea to Illinois

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8:35 pm - 11:50 pm

ICN

ORD

18h 15m1 stop

8:00 am - 6:35 pm

ORD

ICN

19h 35m1 stop

$550Hawaiian Airlines

Thu, Jan 29 - Wed, Feb 11

7:15 pm - 10:59 pm

ICN

STL

18h 44m1 stop

9:54 am - 4:45 pm

STL

ICN

39h 51m2 stops

$554American Airlines

Thu, Feb 5 - Mon, Feb 9

8:35 pm - 11:50 pm

ICN

ORD

18h 15m1 stop

5:29 pm - 6:35 pm

ORD

ICN

34h 06m1 stop

$576Multiple Airlines

Fri, Jan 30 - Sat, Feb 28

8:35 pm - 3:14 pm

ICN

ORD

32h 39m1 stop

6:00 am - 6:35 pm

ORD

ICN

22h 35m1 stop

$582Multiple Airlines

Fri, Mar 20 - Sun, Mar 29

7:20 pm - 12:22 am

ICN

STL

19h 02m1 stop

3:25 pm - 5:20 pm

STL

ICN

35h 55m1 stop

$644Delta

Tue, Apr 14 - Tue, Apr 21

7:00 pm - 11:12 pm

ICN

STL

18h 12m2 stops

5:29 pm - 5:20 pm

STL

ICN

33h 51m1 stop

$645Delta

Mon, Apr 13 - Sun, Apr 19

7:00 am - 4:37 pm

PUS

STL

24h 37m2 stops

6:10 am - 7:35 pm

STL

PUS

22h 25m2 stops

$941Korean Air

Thu, Jan 22 - Mon, Jan 26

6:55 pm - 7:35 pm

PUS

ORD

39h 40m1 stop

11:30 pm - 5:40 pm

ORD

PUS

27h 10m1 stop

$986EVA Air

Tue, Feb 10 - Tue, Feb 17

6:55 pm - 7:35 pm

PUS

ORD

39h 40m1 stop

11:30 pm - 5:40 pm

ORD

PUS

27h 10m1 stop

$1,025EVA Air

Tue, Feb 10 - Tue, Feb 17

7:00 am - 12:46 pm

PUS

MDW

20h 46m2 stops

9:35 am - 8:10 am

MDW

PUS

32h 35m2 stops

$1,438Korean Air

Fri, Mar 6 - Mon, Mar 9

Asiana Airlines flights from South Korea to Illinois

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

Asiana Airlines

Jun 2

ICN8:40 pmIncheon Intl

18h 18m

1 stop

ORD12:58 amChicago O'Hare Intl

Jun 30

ORD6:15 pmChicago O'Hare Intl

20h 05m

1 stop

ICN4:20 amIncheon Intl

$896

Find similar

Asiana Airlines

Jun 2

ICN8:40 pmIncheon Intl

18h 18m

1 stop

ORD12:58 amChicago O'Hare Intl

Jun 30

ORD6:15 pmChicago O'Hare Intl

20h 05m

1 stop

ICN4:20 amIncheon Intl

$899

Find similar

Asiana Airlines

May 12

ICN8:40 pmIncheon Intl

18h 19m

1 stop

ORD12:59 amChicago O'Hare Intl

May 23

ORD6:15 pmChicago O'Hare Intl

20h 05m

1 stop

ICN4:20 amIncheon Intl

$991

Find similar

American Airlines flights from South Korea to Illinois

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

American Airlines

Feb 5

ICN7:15 pmIncheon Intl

30h 05m

2 stops

STL10:20 amLambert-St Louis

Feb 9

STL9:54 amLambert-St Louis

39h 51m

2 stops

ICN4:45 pmIncheon Intl

$554

Find similar

American Airlines

Feb 5

ICN7:15 pmIncheon Intl

32h 48m

2 stops

STL1:03 pmLambert-St Louis

Feb 9

STL9:54 amLambert-St Louis

39h 51m

2 stops

ICN4:45 pmIncheon Intl

$555

Find similar

American Airlines

Feb 4

ICN7:15 pmIncheon Intl

19h 29m

1 stop

ORD11:44 pmChicago O'Hare Intl

Feb 8

ORD1:15 pmChicago O'Hare Intl

36h 30m

1 stop

ICN4:45 pmIncheon Intl

$574

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Thu 1/29

8:35 pm-11:50 pm

1 stop18h 15m

Chicago O'Hare Intl

Wed 2/11

8:00 am-6:35 pm

1 stop19h 35m

$550

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 2/5

7:15 pm-10:59 pm

1 stop18h 44m

Lambert-St Louis

Mon 2/9

9:54 am-4:45 pm

2 stops39h 51m

$554

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 1/30

8:35 pm-11:50 pm

1 stop18h 15m

Chicago O'Hare Intl

Sat 2/28

5:29 pm-6:35 pm

1 stop34h 06m

$576

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 3/20

8:35 pm-3:14 pm

1 stop32h 39m

Chicago O'Hare Intl

Sun 3/29

6:00 am-6:35 pm

1 stop22h 35m

$582

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 4/14

7:20 pm-12:22 am

1 stop19h 02m

Lambert-St Louis

Tue 4/21

3:25 pm-5:20 pm

1 stop35h 55m

$644

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

7:00 pm-11:12 pm

2 stops18h 12m

Lambert-St Louis

Sun 4/19

5:29 pm-5:20 pm

1 stop33h 51m

$645

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Thu 1/22

7:00 am-4:37 pm

2 stops24h 37m

Lambert-St Louis

Mon 1/26

6:10 am-7:35 pm

2 stops22h 25m

$941

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Tue 2/10

6:55 pm-7:35 pm

1 stop39h 40m

Chicago O'Hare Intl

Tue 2/17

11:30 pm-5:40 pm

1 stop27h 10m

$986

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Tue 2/10

6:55 pm-7:35 pm

1 stop39h 40m

Chicago O'Hare Intl

Tue 2/17

11:30 pm-5:40 pm

1 stop27h 10m

$1,025

BusanChicago

PUS - MDW

PUSMDW

Busan Gimhae

Fri 3/6

7:00 am-12:46 pm

2 stops20h 46m

Chicago Midway

Mon 3/9

9:35 am-8:10 am

2 stops32h 35m

$1,438

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

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 Illinois?

The cheapest month to fly to Illinois from South Korea is in November. Flight prices, which tend to average around $598, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $742.

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

The cheapest day to depart from South Korea to Illinois is on a Monday when prices can be found for as low as $1,356. Flights from South Korea to Illinois on a Wednesday will generally be more expensive and average around $1,536. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from South Korea to Illinois during this time can be as low as $1,098. Flights in the evening are often more expensive with an average ticket price of $1,995.

What is the cheapest South Korea to Illinois flight route?

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

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

You are more likely to see cheaper flights to Illinois from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $1,226 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from South Korea for as low as $815 on momondo.

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

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

No. A direct flight is the cheapest option for a flight between South Korea to Illinois.

Cheap South Korea to Illinois flight deals and tips

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

Fastest flight time	12h 50m
Direct flights	Every day
Airports in Illinois	98 airports

The fastest flight from South Korea to Illinois takes 12h 50m

Direct flights go from South Korea to Illinois every day.

There are 98 airports in Illinois. From South Korea there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

When did momondo last update prices for flights from South Korea to Illinois?
Prices for flights from South Korea to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from South Korea to Illinois?
As of December 2025, there are 7 operators available to choose from for flights from South Korea to Illinois.
How old do you have to be to fly from South Korea to Illinois?
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 South Korea to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois 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 Illinois. 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 South Korea to Illinois?
Based on momondo bookings for flights between South Korea and Illinois, the leading plane model is Boeing 777-300ER, making up 82.46% of the total bookings. Other popular models include Airbus A380-800 with 7.89%, Boeing 787-9 Dreamliner with 4.39%, and Airbus A350-900 with 3.51%.

Best airlines flying from South Korea to Illinois

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

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $197	Free Cancellation	Rating 8.0 11,548 reviews	Search Alaska Airlines flights
Delta	PriceFrom $229	Free Cancellation	Rating 7.9 8,021 reviews	Search Delta flights
Asiana Airlines	PriceFrom $558	Free Cancellation	Rating 8.2 500 reviews	Search Asiana Airlines flights
United Airlines	PriceFrom $586	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
Korean Air	PriceFrom $687	Free Cancellation	Rating 8.4 1,184 reviews	Search Korean Air flights
Air Canada	PriceFrom $730	Free Cancellation	Rating 7.1 10,562 reviews	Search Air Canada flights

Why use momondo?

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

Finding the right flight to Illinois from South Korea is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

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

Yes. All flights to Illinois from South Korea on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from South Korea.

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

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

An easier way to manage your Illinois 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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Cheap flights from South Korea to Illinois from $376

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from South Korea to Illinois departing on 2/26. 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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Find the cheapest flights from South Korea to Illinois

Recent round-trip flight deals from South Korea to Illinois

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Asiana Airlines flights from South Korea to Illinois

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

American Airlines flights from South Korea to Illinois

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

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See travel insights to Illinois from

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

What is the cheapest month to fly to Illinois?

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

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

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from South Korea to Illinois during this time can be as low as $1,098. Flights in the evening are often more expensive with an average ticket price of $1,995.

What is the cheapest South Korea to Illinois flight route?

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

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

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

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

No. A direct flight is the cheapest option for a flight between South Korea to Illinois.

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

American Airlines, Air Canada, and Japan Airlines are the most popular carriers operating from South Korea to Illinois

What airlines fly to Illinois?

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

As of December 2025, there are 1 flights per day flying from South Korea to Illinois. The most common time of day flights depart is 10:00AM, with 100% of flights taking off at noon.

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

As of December 2025, 12 flights take off from South Korea and land in Illinois each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

How long is the flight from South Korea to Illinois?

Cheap South Korea to Illinois flight deals and tips

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

Fastest flight time

Direct flights

Airports in Illinois

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

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

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

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

What is the most popular plane model from South Korea to Illinois?

Best airlines flying from South Korea to Illinois

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

Why use momondo?

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

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

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

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

An easier way to manage your Illinois 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 Illinois

Popular cities in Illinois

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