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>

$350 CHEAP FLIGHTS from Illinois to Seoul

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

...and more

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Flight Deals

Cheap Flights from Illinois to Seoul

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, Apr 13 - Mon, Apr 20

7:05 pm - 4:20 am

STL

ICN

19h 15m

1 stop

4:50 pm - 5:50 am

ICN

STL

27h 00m

1 stop

$817United Airlines

Thu, Apr 16 - Thu, Apr 23

7:05 pm - 4:20 am

STL

ICN

19h 15m

1 stop

11:30 am - 4:56 pm

ICN

STL

19h 26m

2 stops

$822United Airlines

Thu, Apr 16 - Thu, Apr 23

8:30 am - 4:20 am

STL

ICN

29h 50m

1 stop

4:50 pm - 5:50 am

ICN

STL

27h 00m

1 stop

$824United Airlines

Tue, Apr 14 - Tue, Apr 21

3:15 pm - 4:20 am

STL

ICN

23h 05m

2 stops

11:30 am - 8:54 pm

ICN

STL

23h 24m

2 stops

$827Lufthansa

Tue, Apr 14 - Tue, Apr 21

8:30 am - 4:20 am

STL

ICN

29h 50m

1 stop

11:30 am - 8:54 pm

ICN

STL

23h 24m

2 stops

$835Lufthansa

Wed, Apr 15 - Wed, Apr 22

4:05 pm - 4:05 pm

STL

ICN

34h 00m

2 stops

5:45 pm - 3:24 pm

ICN

STL

35h 39m

2 stops

$872Air Canada

Mon, Apr 13 - Mon, Apr 20

4:05 pm - 4:05 pm

STL

ICN

34h 00m

2 stops

5:45 pm - 3:25 pm

ICN

STL

35h 40m

2 stops

$873Air Canada

Sat, Apr 25 - Thu, Jul 16

12:53 pm - 5:15 am

ORD

ICN

26h 22m

1 stop

12:55 pm - 11:59 pm

ICN

ORD

25h 04m

2 stops

$928Multiple Airlines

Wed, Apr 22 - Tue, Jul 21

11:25 am - 8:35 am

ORD

ICN

31h 10m

1 stop

11:20 pm - 6:15 pm

ICN

ORD

32h 55m

1 stop

$929Turkish Airlines

Tue, Apr 21 - Thu, Jun 18

7:21 pm - 3:50 pm

ORD

ICN

30h 29m

1 stop

1:45 pm - 5:35 am

ICN

ORD

29h 50m

2 stops

$930Multiple Airlines

Useful Info

Low season	December
High season	June
Cheapest flight	$350

Best time to beat the crowds but there is an average 38% increase in price.

Most popular time to fly with an average 25% 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

Premium Economy Class flights to Seoulfrom $5,635

Economy Class flights to Seoulfrom $701

$350 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