How does KAYAK find such low prices on flights from Illinois to Seoul?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Seoul. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Seoul?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois to Seoul?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seoul with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Seoul?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seoul from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$396 CHEAP FLIGHTS from Illinois to Seoul

KAYAK searches hundreds of travel sites at once for deals on flights to Seoul

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Cheap Flights from Illinois to Seoul

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Seoul that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Seoul

Thu, Aug 28 - Wed, Sep 10

4:00 pm - 9:10 pmORD-ICN

39h 10m1 stop

1:40 pm - 2:25 pmICN-ORD

38h 45m1 stop

$809Cathay Pacific

Find Deal

Mon, Sep 15 - Mon, Oct 20

4:00 pm - 12:40 pmORD-ICN

30h 40m1 stop

8:05 pm - 2:25 pmICN-ORD

32h 20m1 stop

$810Cathay Pacific

Find Deal

Sat, Sep 6 - Tue, Sep 9

9:56 am - 10:45 amSTL-GMP

34h 49m2 stops

12:05 pm - 1:31 pmGMP-STL

39h 26m2 stops

$835Japan Airlines

Find Deal

Sat, Sep 13 - Sun, Sep 21

5:30 pm - 9:35 pmORD-ICN

38h 05m2 stops

12:45 pm - 11:31 pmICN-ORD

24h 46m1 stop

$841

Find Deal

Mon, Sep 1 - Sat, Sep 20

5:15 am - 3:00 pmSTL-ICN

19h 45m2 stops

11:30 am - 4:53 pmICN-STL

19h 23m1 stop

$853United Airlines

Find Deal

Mon, Sep 1 - Sat, Sep 20

5:49 pm - 4:20 amSTL-ICN

20h 31m1 stop

11:30 am - 4:33 pmICN-STL

19h 03m2 stops

$854United Airlines

Find Deal

Sat, Sep 13 - Sun, Sep 21

3:21 pm - 9:35 pmORD-ICN

40h 14m2 stops

12:45 pm - 11:31 pmICN-ORD

24h 46m1 stop

$865

Find Deal

Sat, Oct 18 - Mon, Oct 27

5:28 am - 3:30 pmSTL-ICN

20h 02m1 stop

6:50 pm - 2:02 pmICN-STL

33h 12m1 stop

$872American Airlines

Find Deal

Sat, Oct 18 - Mon, Oct 27

5:28 am - 3:30 pmSTL-ICN

20h 02m1 stop

6:50 pm - 8:55 amICN-STL

28h 05m1 stop

$873American Airlines

Find Deal

Fri, Oct 17 - Tue, Oct 28

1:05 am - 9:50 pmORD-GMP

30h 45m1 stop

7:50 am - 8:25 amGMP-ORD

14h 35m1 stop

$1,121Japan Airlines

Find Deal

Useful Info

Low season	January
High season	June
Cheapest flight	$396

Best time to beat the crowds with an average 30% drop in price.

Most popular time to fly with an average 9% increase in price.

Flight from Chicago O'Hare Airport to Seoul Incheon Airport

How does KAYAK find such low prices on flights from Illinois to Seoul?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Seoul.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Seoul?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Seoul?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seoul with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Seoul?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seoul from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Seoul

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Cabin class types available on flights to Illinois

First Class flights to Seoulfrom $16,314

Business Class flights to Seoulfrom $4,160

Prem Econ Class flights to Seoulfrom $4,785

Economy Class flights to Seoulfrom $771

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

$396 Find Cheap Flights from Illinois to Seoul

KAYAK searches hundreds of travel sites at once for deals on flights to Seoul

Cheap Flights from Illinois to Seoul

Recent round-trip flight deals from Illinois to Seoul

Recent one-way flight deals from Illinois to Seoul

Recent last minute flight deals from Illinois to Seoul

Recent direct flight deals from Illinois to Seoul

Good to know

FAQs for booking flights from Illinois to Seoul

How does KAYAK find such low prices on flights from Illinois to Seoul?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Seoul.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Seoul?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Seoul?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seoul with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Seoul?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seoul from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Seoul

Cabin class types available on flights to Illinois

Complete your trip to Seoul with a hotel stay or car rental

Find direct flights for Seoul

Flights to other popular destinations

Flights from domestic origins to Seoul

Choose which airport to fly into in Seoul

Find deals for your return flight