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>

$341 CHEAP FLIGHTS from Illinois to Seoul

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

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Flight Deals

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

Mon, Sep 8 - Mon, Sep 15

4:00 pm - 12:40 pmORD-ICN

30h 40m1 stop

8:05 pm - 2:25 pmICN-ORD

32h 20m1 stop

$760Cathay Pacific

Find Deal

Sun, Nov 9 - Thu, Nov 13

2:40 pm - 1:55 pmORD-ICN

32h 15m1 stop

7:35 pm - 1:00 pmICN-ORD

32h 25m1 stop

$761Cathay Pacific

Find Deal

Sat, Sep 27 - Sat, Oct 18

4:00 pm - 12:40 pmORD-ICN

30h 40m1 stop

3:10 pm - 2:25 pmICN-ORD

37h 15m1 stop

$763Cathay Pacific

Find Deal

Fri, Oct 24 - Fri, Nov 14

5:30 pm - 6:45 pmORD-ICN

35h 15m1 stop

6:55 pm - 12:12 amICN-ORD

44h 17m2 stops

$829

Find Deal

Sat, Sep 20 - Fri, Feb 6

6:00 am - 6:35 pmSTL-ICN

22h 35m1 stop

8:35 pm - 1:52 pmICN-STL

32h 17m1 stop

$851Hawaiian Airlines

Find Deal

Fri, Sep 19 - Tue, Feb 3

8:40 am - 5:20 pmSTL-ICN

18h 40m1 stop

8:05 pm - 12:37 amICN-STL

19h 32m2 stops

$857Delta

Find Deal

Sat, Sep 27 - Sun, Oct 26

6:00 am - 6:35 pmSTL-ICN

22h 35m1 stop

8:35 pm - 11:59 pmICN-STL

17h 24m1 stop

$866Alaska Airlines

Find Deal

Sun, Aug 31 - Wed, Sep 3

6:00 am - 4:30 pmSTL-ICN

20h 30m2 stops

10:15 am - 10:02 pmICN-STL

25h 47m2 stops

$871Delta

Find Deal

Wed, Sep 17 - Fri, Oct 17

11:15 am - 4:50 amORD-ICN

27h 35m2 stops

9:30 pm - 12:45 pmICN-ORD

29h 15m1 stop

$889

Find Deal

Mon, Sep 1 - Sat, Sep 20

6:30 pm - 7:00 pmSTL-ICN

34h 30m3 stops

9:25 pm - 2:39 pmICN-STL

31h 14m2 stops

$2,175Alaska Airlines

Find Deal

Useful Info

Low season	August
High season	June
Cheapest flight	$341

Best time to beat the crowds but there is an average 18% increase in price.

Most popular time to fly with an average 12% 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 $26,570

Business Class flights to Seoulfrom $4,268

Prem Econ Class flights to Seoulfrom $5,635

Economy Class flights to Seoulfrom $775

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

$341 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