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 53% 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 August 2025, there are 2 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 10m.

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

WestJet and Air Canada are the most popular carriers operating from South Korea to Illinois

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

As of August 2025, 14 flights take off from South Korea and land in Illinois each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

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 August 2025, there are 6 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.

$382 Cheap Flights from South Korea to Illinois in 2025

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Find the cheapest flights from South Korea to Illinois

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from South Korea to Illinois

6:00 pm - 9:51 amICN-ORD

29h 51m1 stop

3:40 pm - 4:15 pmORD-ICN

34h 35m1 stop

$518Air Canada

Find Deal

Wed, Sep 24 - Wed, Jun 10

6:00 pm - 2:55 pmICN-ORD

34h 55m1 stop

3:35 pm - 4:15 pmORD-ICN

34h 40m1 stop

$523Air Canada

Find Deal

Fri, Sep 19 - Mon, Oct 20

4:50 pm - 9:24 pmICN-ORD

18h 34m1 stop

4:30 pm - 4:20 amORD-ICN

21h 50m1 stop

$552United Airlines

Find Deal

Thu, Sep 11 - Wed, Sep 24

4:50 pm - 10:42 pmICN-ORD

19h 52m2 stops

12:55 pm - 4:20 amORD-ICN

25h 25m2 stops

$555United Airlines

Find Deal

Fri, Sep 12 - Wed, Oct 22

6:40 pm - 11:30 amICN-STL

30h 50m1 stop

6:01 am - 5:20 pmSTL-ICN

21h 19m2 stops

$635Delta

Find Deal

Mon, Sep 15 - Mon, Sep 22

6:40 pm - 2:44 pmICN-STL

34h 04m1 stop

5:30 pm - 3:20 pmSTL-ICN

31h 50m1 stop

$688Delta

Find Deal

Sat, Sep 13 - Sat, Sep 20

6:40 pm - 11:02 pmICN-STL

18h 22m1 stop

8:53 am - 5:20 pmSTL-ICN

18h 27m1 stop

$701Korean Air

Find Deal

Mon, Oct 13 - Tue, Oct 21

7:55 am - 9:05 amGMP-ORD

15h 10m1 stop

1:05 am - 9:50 pmORD-GMP

30h 45m1 stop

$775Japan Airlines

Find Deal

Thu, Sep 11 - Tue, Sep 23

7:55 am - 9:05 amGMP-ORD

15h 10m1 stop

1:05 am - 9:50 pmORD-GMP

30h 45m1 stop

$790Japan Airlines

Find Deal

Thu, Sep 11 - Tue, Sep 23

6:40 pm - 11:02 pmICN-STL

18h 22m1 stop

6:00 am - 3:50 pmSTL-ICN

18h 50m1 stop

$836Korean Air

Find Deal

Mon, Oct 13 - Thu, Nov 6

Air Canada flights from South Korea to Illinois

Our best Air Canada deals on South Korea to Illinois flight tickets

Air Canada

Sep 24

ICN6:00 pmIncheon Intl

29h 51m

1 stop

ORD9:51 amChicago O'Hare Intl

Jun 10

ORD3:40 pmChicago O'Hare Intl

34h 35m

1 stop

ICN4:15 pmIncheon Intl

$518

Find similar

Air Canada

Sep 19

ICN6:00 pmIncheon Intl

34h 55m

1 stop

ORD2:55 pmChicago O'Hare Intl

Oct 20

ORD3:35 pmChicago O'Hare Intl

34h 40m

1 stop

ICN4:15 pmIncheon Intl

$523

Find similar

Air Canada

Sep 12

ICN6:00 pmIncheon Intl

29h 48m

1 stop

ORD9:48 amChicago O'Hare Intl

Oct 22

ORD3:35 pmChicago O'Hare Intl

34h 40m

1 stop

ICN4:15 pmIncheon Intl

$527

Find similar

Japan Airlines flights from South Korea to Illinois

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

Japan Airlines

Sep 11

GMP7:55 amSeoul Gimpo Intl

15h 10m

1 stop

ORD9:05 amChicago O'Hare Intl

Sep 23

ORD1:05 amChicago O'Hare Intl

30h 45m

1 stop

GMP9:50 pmSeoul Gimpo Intl

$775

Find similar

Japan Airlines

Sep 11

GMP7:55 amSeoul Gimpo Intl

15h 10m

1 stop

ORD9:05 amChicago O'Hare Intl

Sep 23

ORD1:05 amChicago O'Hare Intl

30h 45m

1 stop

GMP9:50 pmSeoul Gimpo Intl

$790

Find similar

Japan Airlines

Sep 11

GMP7:55 amSeoul Gimpo Intl

15h 10m

1 stop

ORD9:05 amChicago O'Hare Intl

Sep 23

ORD1:05 amChicago O'Hare Intl

30h 45m

1 stop

GMP9:50 pmSeoul Gimpo Intl

$794

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Wed 9/24

6:00 pm-9:51 am

1 stop29h 51m

Chicago O'Hare Intl

Wed 6/10

3:40 pm-4:15 pm

1 stop34h 35m

$518

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 9/19

6:00 pm-2:55 pm

1 stop34h 55m

Chicago O'Hare Intl

Mon 10/20

3:35 pm-4:15 pm

1 stop34h 40m

$523

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Thu 9/11

4:50 pm-9:24 pm

1 stop18h 34m

Chicago O'Hare Intl

Wed 9/24

4:30 pm-4:20 am

1 stop21h 50m

$552

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 9/12

4:50 pm-10:42 pm

2 stops19h 52m

Chicago O'Hare Intl

Wed 10/22

12:55 pm-4:20 am

2 stops25h 25m

$555

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 9/15

6:40 pm-11:30 am

1 stop30h 50m

Lambert-St Louis

Mon 9/22

6:01 am-5:20 pm

2 stops21h 19m

$635

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 9/13

6:40 pm-2:44 pm

1 stop34h 04m

Lambert-St Louis

Sat 9/20

5:30 pm-3:20 pm

1 stop31h 50m

$688

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 10/13

6:40 pm-11:02 pm

1 stop18h 22m

Lambert-St Louis

Tue 10/21

8:53 am-5:20 pm

1 stop18h 27m

$701

SeoulChicago

GMP - ORD

GMPORD

Seoul Gimpo Intl

Thu 9/11

7:55 am-9:05 am

1 stop15h 10m

Chicago O'Hare Intl

Tue 9/23

1:05 am-9:50 pm

1 stop30h 45m

$775

SeoulChicago

GMP - ORD

GMPORD

Seoul Gimpo Intl

Thu 9/11

7:55 am-9:05 am

1 stop15h 10m

Chicago O'Hare Intl

Tue 9/23

1:05 am-9:50 pm

1 stop30h 45m

$790

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 10/13

6:40 pm-11:02 pm

1 stop18h 22m

Lambert-St Louis

Thu 11/6

6:00 am-3:50 pm

1 stop18h 50m

$836

Flights are sorted by cheapest round-trip flights first.

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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 February. Flight prices, which tend to average around $876, 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 February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $879.

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 Tuesday when prices can be found for as low as $1,328. Flights from South Korea to Illinois on a Wednesday will generally be more expensive and average around $1,538. 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 $1,304 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 $1,051 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?

You could potentially save up to 30% on your flight if you consider stops on a South Korea to Illinois flight.

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

Best Price Found	$382
Fastest flight time	15h 10m
Direct flights	Every day
Airports in Illinois	3 airports

The best one-way flight to Illinois from South Korea in the past 72 hours is $382. The best round-trip flight deal from South Korea to Illinois found on momondo in the last 72 hours is $518.

The fastest flight from South Korea to Illinois takes 15h 10m

Direct flights go from South Korea to Illinois every day.

There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)

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 August 2025, there are 6 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 88.42% of the total bookings. Other popular models include Airbus A350-900 with 4.24%, Airbus A380-800 with 3.67%, and Boeing 787-9 Dreamliner with 3.11%.

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
Delta	PriceFrom $229	Free Cancellation	Rating 8.0 7,983 reviews	Search Delta flights
Asiana Airlines	PriceFrom $558	Free Cancellation	Rating 8.2 468 reviews	Search Asiana Airlines flights
Air Canada	PriceFrom $730	Free Cancellation	Rating 7.1 9,855 reviews	Search Air Canada flights
American Airlines	PriceFrom $778	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Korean Air	PriceFrom $857	Free Cancellation	Rating 8.4 1,122 reviews	Search Korean Air flights
United Airlines	PriceFrom $959	Free Cancellation	Rating 7.4 8,904 reviews	Search United Airlines 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 $382

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 8/29. 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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Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from South Korea to Illinois

Recent round-trip flight deals from South Korea to Illinois

Recent one-way flight deals from South Korea to Illinois

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Air Canada flights from South Korea to Illinois

Our best Air Canada deals on South Korea to Illinois flight tickets

Japan Airlines flights from South Korea to Illinois

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

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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

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?

You could potentially save up to 30% on your flight if you consider stops on a South Korea to Illinois flight.

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

WestJet and Air Canada 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 August 2025, there are 2 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 August 2025, 14 flights take off from South Korea and land in Illinois each week. The most common flight departure day for this route is Mon, with 14% 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

Best Price Found

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