How many flights depart from Illinois to Incheon Intl Airport on average per week?

As of May 2026, 14 flights take off from Illinois and land in Incheon Intl Airport 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 does it take to fly to Incheon Intl Airport?

On average, it takes 15h 43m to fly from Illinois to Incheon Intl Airport if you fly out of Chicago (the most popular airport in Illinois) and into Incheon Intl Airport (the most popular airport in Incheon Intl Airport). If you’re flying out of Moline and into Incheon Intl Airport, then the flight time is around 28h 05m.

What is the cheapest airline that flies from Illinois to Incheon Intl?

Alaska Airlines, Air Canada, and Finnair are the most popular carriers operating from Illinois to Incheon Intl

How many flights depart from Illinois to Incheon Intl Airport on average per day?

As of May 2026, 2 flights take off from Illinois and land in Incheon Intl Airport each day. The most common flight departure time for this route is 12:00PM, with 100% of daily flights taking off in the afternoon.

What airlines fly to Incheon Intl Airport?

Korean Air, EVA Air and Delta are the top three most popular airlines that fly to Incheon Intl Airport from Illinois according to our data. Korean Air is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Incheon Intl Airport. Keep in mind that there are 11 different airlines that fly to Incheon Intl Airport 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 Incheon Intl Airport?

Prices for flights from Illinois to Incheon Intl Airport were last updated today.

How many operators does momondo search for flights from Illinois to Incheon Intl Airport?

As of May 2026, there are 11 operators available to choose from for flights from Illinois to Incheon Intl Airport.

How old do you have to be to fly from Illinois to Incheon Intl Airport?

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 Incheon Intl Airport.

What documentation or ID do you need to fly to Incheon Intl Airport?

The travel and health documents required for your trip to Incheon Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Incheon Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$473 Cheap Flights from Illinois to Incheon Intl Airport in 2026

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Find the cheapest flights from Illinois to Seoul

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:30 pm - 6:45 pm

ORD

ICN

35h 15m

1 stop

12:55 pm - 12:42 am

ICN

ORD

49h 47m

2 stops

$1,170Multiple Airlines

Wed, Jul 29 - Thu, Sep 3

4:15 pm - 12:40 pm

ORD

ICN

30h 25m

1 stop

8:00 am - 1:55 pm

ICN

ORD

19h 55m

1 stop

$1,181Cathay Pacific

Tue, Jun 2 - Tue, Jun 9

9:30 pm - 11:20 am

ORD

ICN

23h 50m

1 stop

9:50 pm - 5:50 pm

ICN

ORD

34h 00m

1 stop

$1,189Finnair

Tue, May 12 - Tue, May 19

9:30 pm - 11:20 am

ORD

ICN

23h 50m

1 stop

9:50 pm - 5:50 pm

ICN

ORD

34h 00m

1 stop

$1,233Finnair

Tue, May 12 - Tue, May 26

12:10 pm - 4:05 pm

STL

ICN

61h 55m

2 stops

6:55 pm - 3:30 pm

ICN

STL

35h 35m

2 stops

$1,266Air Canada

Sat, Aug 22 - Mon, Nov 23

12:10 pm - 4:05 pm

STL

ICN

61h 55m

2 stops

6:55 pm - 3:30 pm

ICN

STL

35h 35m

2 stops

$1,300Air Canada

Sat, Oct 17 - Sun, Nov 1

7:00 am - 5:15 pm

STL

ICN

44h 15m

2 stops

12:20 am - 11:59 pm

ICN

STL

38h 39m

2 stops

$1,321Qatar Airways

Thu, Oct 29 - Fri, Nov 6

7:20 am - 3:45 pm

MLI

ICN

18h 25m

1 stop

5:50 pm - 10:12 pm

ICN

MLI

18h 22m

1 stop

$1,406American Airlines

Mon, Aug 24 - Sat, Sep 5

7:20 am - 3:45 pm

MLI

ICN

18h 25m

1 stop

5:50 pm - 10:12 pm

ICN

MLI

18h 22m

1 stop

$1,407American Airlines

Mon, Aug 24 - Sat, Sep 5

2:47 pm - 5:05 pm

CMI

ICN

36h 18m

2 stops

1:20 am - 2:19 pm

ICN

CMI

50h 59m

2 stops

$1,726Qatar Airways

Sat, Sep 5 - Tue, Sep 8

Cathay Pacific flights from Illinois to Incheon Intl Airport

Our best Cathay Pacific deals on Illinois to Incheon Intl Airport flight tickets

Cathay Pacific

Aug 20

ORD4:00 pmChicago O'Hare Intl

37h 05m

1 stop

ICN7:05 pmIncheon Intl

Sep 4

ICN1:55 amIncheon Intl

26h 25m

1 stop

ORD2:20 pmChicago O'Hare Intl

$1,168

Cathay Pacific

Aug 13

ORD4:00 pmChicago O'Hare Intl

42h 25m

1 stop

ICN12:25 amIncheon Intl

Aug 22

ICN1:55 amIncheon Intl

26h 25m

1 stop

ORD2:20 pmChicago O'Hare Intl

$1,169

Cathay Pacific

Sep 8

ORD4:00 pmChicago O'Hare Intl

23h 30m

1 stop

ICN5:30 amIncheon Intl

Sep 17

ICN1:40 pmIncheon Intl

38h 15m

1 stop

ORD1:55 pmChicago O'Hare Intl

$1,170

WestJet flights from Illinois to Incheon Intl Airport

Our best WestJet deals on Illinois to Incheon Intl Airport flight tickets

WestJet

Sep 5

ORD5:30 pmChicago O'Hare Intl

35h 15m

1 stop

ICN6:45 pmIncheon Intl

Sep 13

ICN8:45 pmIncheon Intl

33h 55m

1 stop

ORD4:40 pmChicago O'Hare Intl

$1,176

WestJet

Sep 5

ORD5:30 pmChicago O'Hare Intl

35h 15m

1 stop

ICN6:45 pmIncheon Intl

Sep 13

ICN8:45 pmIncheon Intl

33h 55m

1 stop

ORD4:40 pmChicago O'Hare Intl

$1,177

WestJet

Sep 5

ORD5:30 pmChicago O'Hare Intl

35h 15m

1 stop

ICN6:45 pmIncheon Intl

Sep 13

ICN8:45 pmIncheon Intl

33h 55m

1 stop

ORD4:40 pmChicago O'Hare Intl

$1,178

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Incheon Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Wed 7/29

5:30 pm-6:45 pm

1 stop35h 15m

Incheon Intl

Thu 9/3

12:55 pm-12:42 am

2 stops49h 47m

$1,170

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Tue 6/2

4:15 pm-12:40 pm

1 stop30h 25m

Incheon Intl

Tue 6/9

8:00 am-1:55 pm

1 stop19h 55m

$1,181

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Tue 5/12

9:30 pm-11:20 am

1 stop23h 50m

Incheon Intl

Tue 5/19

9:50 pm-5:50 pm

1 stop34h 00m

$1,189

ChicagoIncheon

ORD - ICN

ORDICN

Chicago O'Hare Intl

Tue 5/12

9:30 pm-11:20 am

1 stop23h 50m

Incheon Intl

Tue 5/26

9:50 pm-5:50 pm

1 stop34h 00m

$1,233

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 8/22

12:10 pm-4:05 pm

2 stops61h 55m

Incheon Intl

Mon 11/23

6:55 pm-3:30 pm

2 stops35h 35m

$1,266

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 10/17

12:10 pm-4:05 pm

2 stops61h 55m

Incheon Intl

Sun 11/1

6:55 pm-3:30 pm

2 stops35h 35m

$1,300

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 10/29

7:00 am-5:15 pm

2 stops44h 15m

Incheon Intl

Fri 11/6

12:20 am-11:59 pm

2 stops38h 39m

$1,321

Quickest round-trip

MolineIncheon

MLI - ICN

MLIICN

Moline Quad-City

Mon 8/24

7:20 am-3:45 pm

1 stop18h 25m

Incheon Intl

Sat 9/5

5:50 pm-10:12 pm

1 stop18h 22m

$1,406

MolineIncheon

MLI - ICN

MLIICN

Moline Quad-City

Mon 8/24

7:20 am-3:45 pm

1 stop18h 25m

Incheon Intl

Sat 9/5

5:50 pm-10:12 pm

1 stop18h 22m

$1,407

ChampaignIncheon

CMI - ICN

CMIICN

Champaign University-Willard

Sat 9/5

2:47 pm-5:05 pm

2 stops36h 18m

Incheon Intl

Tue 9/8

1:20 am-2:19 pm

2 stops50h 59m

$1,726

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 Incheon Intl Airport

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 Incheon Intl Airport?

The cheapest month to fly to Incheon Intl Airport from Illinois is in October. Flight prices, which tend to average around $137, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of October, then departing from Illinois during the month February is also very affordable. Most momondo users find prices during this month for around $177.

What is the cheapest day to depart on your flight to Incheon Intl Airport?

The cheapest day to depart from Illinois to Incheon Intl Airport is on a Tuesday when prices can be found for as low as $877. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,094. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

What is the cheapest time of day to depart on your flight to Incheon Intl Airport?

In the morning is the cheapest time of day to fly from Illinois to Incheon Intl Airport when you can find flight prices for as low as $969. Flying to Incheon Intl Airport in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $982 on average. Flights to Incheon Intl Airport from Illinois in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Illinois to Incheon Intl flight route?

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

How far in advance should I book a flight from Illinois to Incheon Intl Airport?

You are more likely to see cheaper flights to Incheon Intl Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,462 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from Illinois for as low as $978 on momondo.

Can stopping save me money on Illinois to Incheon Intl Airport flights?

You could potentially save up to 19% on your flight if you consider stops on a Illinois to Incheon Intl Airport flight.

Cheap Illinois to Incheon Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Incheon Intl Airport

Best Price Found	$637
Fastest flight time	14h 20m
Direct flights	Every day

The best one-way flight to Incheon Intl Airport from Illinois in the past 72 hours is $637. The best round-trip flight deal from Illinois to Incheon Intl Airport found on momondo in the last 72 hours is $1,046.

The fastest flight from Illinois to Incheon Intl Airport takes 14h 20m

Direct flights go from Illinois to Incheon Intl Airport every day.

Search flight deals

Frequently asked questions about flying from Illinois to Incheon Intl Airport

When did momondo last update prices for flights from Illinois to Incheon Intl Airport?
Prices for flights from Illinois to Incheon Intl Airport were last updated today.
How many operators does momondo search for flights from Illinois to Incheon Intl Airport?
As of May 2026, there are 11 operators available to choose from for flights from Illinois to Incheon Intl Airport.
How old do you have to be to fly from Illinois to Incheon Intl Airport?
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 Incheon Intl Airport.
What documentation or ID do you need to fly to Incheon Intl Airport?
The travel and health documents required for your trip to Incheon Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Incheon Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Illinois to Incheon Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Incheon Intl Airport is Boeing 777-300ER, representing 90.62% of all bookings. The subsequent popular models are Airbus A350-900 at 4.06%, Boeing 787-10 Dreamliner at 1.25%, and Boeing 787-8 Dreamliner at 0.94%.

Best airlines flying from Illinois to Incheon Intl Airport

Compare and see reviews for airlines that fly from Illinois to Incheon Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,457 reviews	Search Delta flights
Cathay Pacific	PriceFrom $639	Free Cancellation	Rating 7.6 1,322 reviews	Search Cathay Pacific flights
Turkish Airlines	PriceFrom $845	Free Cancellation	Rating 7.4 4,357 reviews	Search Turkish Airlines flights
American Airlines	PriceFrom $916	Free Cancellation	Rating 7.1 11,668 reviews	Search American Airlines flights
Japan Airlines	PriceFrom $931	Free Cancellation	Rating 8.3 1,812 reviews	Search Japan Airlines flights
EVA Air	PriceFrom $948	Free Cancellation	Rating 8.5 1,444 reviews	Search EVA Air flights
Air Canada	PriceFrom $1,088	Free Cancellation	Rating 7.1 11,012 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $1,148	Free Cancellation	Rating 8.1 530 reviews	Search Asiana Airlines flights
Finnair	PriceFrom $1,174	Free Cancellation	Rating 7.6 1,393 reviews	Search Finnair flights
United Airlines	PriceFrom $1,191	Free Cancellation	Rating 7.4 9,696 reviews	Search United Airlines flights

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Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Seoul for you.

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

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

How can momondo help me find flights from Illinois to Seoul?

Once all potential Illinois to Seoul flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

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

An easier way to manage your Incheon Intl Airport trip

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Flights to Seoul Gimpo Intl Airportfrom $712

Cheap flights from Illinois to Seoul from $538

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 8/3. 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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Cathay Pacific flights from Illinois to Incheon Intl Airport

Our best Cathay Pacific deals on Illinois to Incheon Intl Airport flight tickets

WestJet flights from Illinois to Incheon Intl Airport

Our best WestJet deals on Illinois to Incheon Intl Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Incheon Intl Airport that are best for you.

See travel insights to Seoul from

How to get the cheapest flight ticket from Illinois to Incheon Intl Airport

What is the cheapest month to fly to Incheon Intl Airport?

What is the cheapest day to depart on your flight to Incheon Intl Airport?

What is the cheapest time of day to depart on your flight to Incheon Intl Airport?

What is the cheapest Illinois to Incheon Intl flight route?

How far in advance should I book a flight from Illinois to Incheon Intl Airport?

Can stopping save me money on Illinois to Incheon Intl Airport flights?

What is the cheapest airline that flies from Illinois to Incheon Intl?

What airlines fly to Incheon Intl Airport?

How many flights depart from Illinois to Incheon Intl Airport on average per day?

How many flights depart from Illinois to Incheon Intl Airport on average per week?

How long does it take to fly to Incheon Intl Airport?

Cheap Illinois to Incheon Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Incheon Intl Airport

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Illinois to Incheon Intl Airport

Best airlines flying from Illinois to Incheon Intl Airport

Compare and see reviews for airlines that fly from Illinois to Incheon Intl Airport with momondo

Traveling to a place near Seoul?

Why use momondo?

An easier way to manage your Incheon Intl Airport 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 Seoul

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

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