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

WestJet, Hawaiian Airlines, and United 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 July 2025. 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 South Korea?

Korean Air, Air Canada 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 57% of people opting to fly with this airline when traveling to South Korea. Keep in mind that there are 10 different airlines that fly to South Korea on a routine basis, so you have a few additional options to choose from.

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 July 2025. 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 37m on average. If you fly from Moline (another popular airport in Illinois) to Incheon Intl Airport, then the average flight time is 31h 31m.

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 July 2025, there are 10 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.

$379 Cheap Flights from Illinois to South Korea in 2025

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Find the cheapest flights from Illinois to South Korea

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

2:40 pm - 12:45 pmORD-ICN

31h 05m1 stop

7:35 pm - 1:00 pmICN-ORD

32h 25m1 stop

$745Cathay Pacific

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Mon, Nov 10 - Mon, Nov 24

4:00 pm - 9:10 pmORD-ICN

39h 10m1 stop

1:40 pm - 2:25 pmICN-ORD

38h 45m1 stop

$758Cathay Pacific

Find Deal

Wed, Sep 17 - Tue, Sep 23

7:59 pm - 3:30 pmSTL-ICN

29h 31m2 stops

5:25 pm - 8:05 amICN-STL

28h 40m2 stops

$844American Airlines

Find Deal

Mon, Sep 1 - Sat, Sep 20

5:49 pm - 3:00 pmSTL-ICN

31h 11m1 stop

11:30 am - 4:53 pmICN-STL

19h 23m1 stop

$845United Airlines

Find Deal

Mon, Sep 1 - Sat, Sep 20

5:30 pm - 4:20 amSTL-ICN

20h 50m2 stops

11:30 am - 4:33 pmICN-STL

19h 03m2 stops

$849United Airlines

Find Deal

Mon, Sep 1 - Sat, Sep 20

7:41 pm - 3:30 pmSTL-ICN

29h 49m1 stop

5:25 pm - 3:08 pmICN-STL

35h 43m1 stop

$853American Airlines

Find Deal

Mon, Sep 1 - Sat, Sep 20

8:46 am - 5:20 pmSTL-ICN

18h 34m1 stop

7:40 pm - 12:38 amICN-STL

18h 58m1 stop

$856Delta

Find Deal

Mon, Sep 1 - Tue, Sep 30

5:30 pm - 9:35 pmORD-ICN

38h 05m2 stops

10:05 pm - 6:11 amICN-ORD

22h 06m1 stop

$856

Find Deal

Wed, Sep 3 - Wed, Sep 10

5:30 pm - 9:35 pmORD-ICN

38h 05m2 stops

12:45 pm - 11:31 pmICN-ORD

24h 46m1 stop

$859

Find Deal

Sat, Sep 6 - Mon, Oct 13

6:00 am - 4:25 pmSTL-ICN

20h 25m2 stops

7:40 pm - 12:38 amICN-STL

18h 58m1 stop

$861Delta

Find Deal

Mon, Sep 1 - Tue, Sep 30

Delta flights from Illinois to South Korea

Our best Delta deals on Illinois to South Korea flight tickets

Delta

Sep 1

STL8:46 amLambert-St Louis

18h 34m

1 stop

ICN5:20 pmIncheon Intl

Sep 30

ICN7:40 pmIncheon Intl

18h 58m

1 stop

STL12:38 amLambert-St Louis

$856

Find similar

Delta

Sep 1

STL6:00 amLambert-St Louis

20h 25m

2 stops

ICN4:25 pmIncheon Intl

Sep 30

ICN7:40 pmIncheon Intl

18h 58m

1 stop

STL12:38 amLambert-St Louis

$861

Find similar

Delta

Sep 12

STL6:00 amLambert-St Louis

21h 20m

1 stop

ICN5:20 pmIncheon Intl

Oct 25

ICN6:50 pmIncheon Intl

17h 09m

1 stop

STL9:59 pmLambert-St Louis

$862

Find similar

Cathay Pacific flights from Illinois to South Korea

Our best Cathay Pacific deals on Illinois to South Korea flight tickets

Cathay Pacific

Nov 10

ORD2:40 pmChicago O'Hare Intl

31h 05m

1 stop

ICN12:45 pmIncheon Intl

Nov 24

ICN7:35 pmIncheon Intl

32h 25m

1 stop

ORD1:00 pmChicago O'Hare Intl

$745

Find similar

Cathay Pacific

Sep 17

ORD4:00 pmChicago O'Hare Intl

39h 10m

1 stop

ICN9:10 pmIncheon Intl

Sep 23

ICN1:40 pmIncheon Intl

38h 45m

1 stop

ORD2:25 pmChicago O'Hare Intl

$758

Find similar

Cathay Pacific

Aug 21

ORD4:00 pmChicago O'Hare Intl

39h 10m

1 stop

ICN9:10 pmIncheon Intl

Sep 1

ICN8:05 pmIncheon Intl

32h 20m

1 stop

ORD2:25 pmChicago O'Hare Intl

$759

Find similar

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 October is also cheap. Prices for this month can be found on momondo for an average of $1,181.

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 Monday. momondo users have found tickets for Monday departures for as low as $1,082. 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 $1,380.

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

Flying to South Korea from Illinois in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,183 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,432 on average. Flights to South Korea from Illinois in the afternoon 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 $1,510 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 $1,302 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 17% 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	$379
Fastest flight time	16h 50m
Direct flights	Every day
Airports in South Korea	3 airports

The best one-way flight to South Korea from Illinois in the past 72 hours is $379. The best round-trip flight deal from Illinois to South Korea found on momondo in the last 72 hours is $745.

The fastest flight from Illinois to South Korea takes 16h 50m

Direct flights go from Illinois to South Korea every day.

There are 3 airports near South Korea: Incheon Intl (ICN), Daegu (TAE), Seoul Gimpo Intl (GMP)

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 July 2025, there are 10 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 85.59% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 3.75%, Boeing 777 at 3.15%, and Airbus A350-900 at 1.95%.

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
United Airlines	PriceFrom $660	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $805	Free Cancellation	Rating 7.6 929 reviews	Search Cathay Pacific flights
Turkish Airlines	PriceFrom $848	Free Cancellation	Rating 7.3 3,896 reviews	Search Turkish Airlines flights
Air Canada	PriceFrom $891	Free Cancellation	Rating 7.1 9,695 reviews	Search Air Canada flights
American Airlines	PriceFrom $895	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
EVA Air	PriceFrom $1,079	Free Cancellation	Rating 8.4 1,215 reviews	Search EVA Air flights
Finnair	PriceFrom $1,110	Free Cancellation	Rating 7.6 1,312 reviews	Search Finnair flights
Asiana Airlines	PriceFrom $1,271	Free Cancellation	Rating 8.2 454 reviews	Search Asiana Airlines flights
Delta	PriceFrom $1,271	Free Cancellation	Rating 8.0 7,951 reviews	Search Delta flights
Korean Air	PriceFrom $1,517	Free Cancellation	Rating 8.4 1,105 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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Find better results for your trip to South Korea

Popular cities in South Korea

Flights to Seoulfrom $596

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Cheap flights from Illinois to South Korea from $379

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 9/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Illinois to South Korea

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Delta flights from Illinois to South Korea

Our best Delta deals on Illinois to South Korea flight tickets

Cathay Pacific flights from Illinois to South Korea

Our best Cathay Pacific deals on Illinois to South Korea flight tickets

See travel insights to South Korea from

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

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 October is also cheap. Prices for this month can be found on momondo for an average of $1,181.

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?

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?

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 17% on your flight if you consider stops on a Illinois to South Korea flight.

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

WestJet, Hawaiian Airlines, and United Airlines are the most popular carriers operating from Illinois to South Korea

What airlines fly 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 July 2025. The most popular departure time for this route is 12:00PM, with 100% of flights per day taking off in the afternoon.

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 July 2025. 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?

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

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

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

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

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

What is the most popular plane model from Illinois to 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