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.

$454 CHEAP FLIGHTS from Illinois to Seoul

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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

Thu, Nov 19 - Sat, Nov 28

9:45 am - 3:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

39h 00m1 stop Addis Ababa Bole

12:05 am - 7:40 amICN Incheon Intl-ORD Chicago O'Hare Intl

46h 35m2 stops Addis Ababa Bole Rome Fiumicino

$853Ethiopian Air

Sat, Nov 14 - Sat, Nov 21

9:45 am - 3:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

39h 00m1 stop Addis Ababa Bole

12:05 am - 7:40 amICN Incheon Intl-ORD Chicago O'Hare Intl

46h 35m2 stops Addis Ababa Bole Rome Fiumicino

$858Ethiopian Air

Mon, Nov 30 - Wed, Dec 9

11:45 am - 6:20 pmORD Chicago O'Hare Intl-ICN Incheon Intl

39h 35m1 stop Istanbul

12:05 am - 6:20 pmICN Incheon Intl-ORD Chicago O'Hare Intl

33h 15m1 stop Istanbul

$1,006Turkish Airlines

Wed, Dec 9 - Wed, Dec 16

11:45 am - 1:55 pmORD Chicago O'Hare Intl-ICN Incheon Intl

35h 10m1 stop Istanbul

12:05 am - 6:20 pmICN Incheon Intl-ORD Chicago O'Hare Intl

33h 15m1 stop Istanbul

$1,012Turkish Airlines

Sun, Oct 25 - Sun, Nov 1

6:00 am - 4:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

20h 45m1 stop Dallas/Fort Worth

6:50 pm - 10:30 pmICN Incheon Intl-ORD Chicago O'Hare Intl

18h 40m1 stop Dallas/Fort Worth

$1,047American Airlines

Wed, Oct 28 - Tue, Nov 24

5:00 am - 4:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

21h 45m1 stop Dallas/Fort Worth

6:50 pm - 12:20 amICN Incheon Intl-ORD Chicago O'Hare Intl

20h 30m1 stop Dallas/Fort Worth

$1,054American Airlines

Mon, Oct 5 - Sun, Oct 11

12:38 pm - 2:05 pmCMI Champaign University-Willard-ICN Incheon Intl

35h 27m2 stops Chicago O'Hare Intl Hong Kong Intl

1:40 pm - 6:05 pmICN Incheon Intl-CMI Champaign University-Willard

42h 25m2 stops Hong Kong Intl Chicago O'Hare Intl

$1,085Cathay Pacific

Sun, Oct 18 - Wed, Oct 28

3:40 pm - 4:05 pmORD Chicago O'Hare Intl-ICN Incheon Intl

34h 25m1 stop Vancouver Intl

5:55 pm - 2:37 pmICN Incheon Intl-ORD Chicago O'Hare Intl

34h 42m1 stop Vancouver Intl

$1,101Air Canada

Mon, Oct 19 - Mon, Oct 26

3:40 pm - 4:05 pmORD Chicago O'Hare Intl-ICN Incheon Intl

34h 25m1 stop Vancouver Intl

5:55 pm - 2:37 pmICN Incheon Intl-ORD Chicago O'Hare Intl

34h 42m1 stop Vancouver Intl

$1,102Air Canada

Sat, Oct 10 - Wed, Oct 28

4:05 pm - 12:40 pmCMI Champaign University-Willard-ICN Incheon Intl

54h 35m2 stops Chicago O'Hare Intl Hong Kong Intl

7:35 pm - 6:05 pmICN Incheon Intl-CMI Champaign University-Willard

36h 30m2 stops Hong Kong Intl Chicago O'Hare Intl

$1,109Cathay Pacific

Recent last minute flight deals from Illinois to Seoul

Mon, Sep 14 - Thu, Sep 24

9:15 pm - 3:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

28h 30m1 stop Dallas/Fort Worth

5:50 pm - 11:30 pmICN Incheon Intl-ORD Chicago O'Hare Intl

19h 40m1 stop Dallas/Fort Worth

$1,054American Airlines

Fri, Sep 18 - Sat, Sep 26

9:15 pm - 3:45 pmORD Chicago O'Hare Intl-ICN Incheon Intl

28h 30m1 stop Dallas/Fort Worth

5:50 pm - 12:14 amICN Incheon Intl-ORD Chicago O'Hare Intl

20h 24m1 stop Dallas/Fort Worth

$1,054American Airlines

Tue, Sep 15 - Wed, Sep 23

6:55 am - 6:00 amORD Chicago O'Hare Intl-ICN Incheon Intl

33h 05m2 stops Los Angeles Manila Ninoy Aquino Intl

7:20 am - 5:00 amICN Incheon Intl-ORD Chicago O'Hare Intl

35h 40m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,113Multiple Airlines

Tue, Sep 15 - Sun, Sep 20

8:23 am - 6:00 amORD Chicago O'Hare Intl-ICN Incheon Intl

31h 37m2 stops Los Angeles Manila Ninoy Aquino Intl

7:20 am - 5:00 amICN Incheon Intl-ORD Chicago O'Hare Intl

35h 40m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,113Multiple Airlines

Wed, Sep 16 - Wed, Sep 23

12:30 am - 11:00 amORD Chicago O'Hare Intl-ICN Incheon Intl

20h 30m1 stop Taipei City Taiwan Taoyuan Intl

12:00 pm - 8:45 pmICN Incheon Intl-ORD Chicago O'Hare Intl

22h 45m1 stop Taipei City Taiwan Taoyuan Intl

$1,121EVA Air

Wed, Sep 16 - Tue, Sep 22

12:30 am - 11:00 amORD Chicago O'Hare Intl-ICN Incheon Intl

20h 30m1 stop Taipei City Taiwan Taoyuan Intl

7:45 pm - 8:45 pmICN Incheon Intl-ORD Chicago O'Hare Intl

39h 00m1 stop Taipei City Taiwan Taoyuan Intl

$1,121EVA Air

Sun, Sep 13 - Tue, Sep 15

7:09 am - 5:30 pmORD Chicago O'Hare Intl-ICN Incheon Intl

20h 21m1 stop Toronto Pearson Intl

5:45 pm - 5:05 pmICN Incheon Intl-ORD Chicago O'Hare Intl

37h 20m2 stops Vancouver Intl Calgary

$1,157Air Canada

Thu, Sep 17 - Sun, Sep 27

7:09 am - 5:30 pmORD Chicago O'Hare Intl-ICN Incheon Intl

20h 21m1 stop Toronto Pearson Intl

5:45 pm - 8:00 amICN Incheon Intl-ORD Chicago O'Hare Intl

28h 15m2 stops Vancouver Intl Toronto Pearson Intl

$1,165Air Canada

Thu, Sep 17 - Sun, Oct 4

4:15 pm - 5:30 amORD Chicago O'Hare Intl-ICN Incheon Intl

23h 15m1 stop Hong Kong Intl

8:05 pm - 1:55 pmICN Incheon Intl-ORD Chicago O'Hare Intl

31h 50m1 stop Hong Kong Intl

$1,203Cathay Pacific

Tue, Sep 15 - Tue, Sep 22

4:00 pm - 7:05 pmORD Chicago O'Hare Intl-ICN Incheon Intl

37h 05m1 stop Hong Kong Intl

1:40 pm - 1:55 pmICN Incheon Intl-ORD Chicago O'Hare Intl

38h 15m1 stop Hong Kong Intl

$2,039Cathay Pacific

Recent direct flight deals from Illinois to Seoul

Wed, Nov 4 - Sun, Feb 7

11:10 am - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

10:40 am - 8:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,717Korean Air

Mon, Oct 26 - Mon, Nov 9

12:10 pm - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

10:40 am - 8:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,720Korean Air

Thu, Nov 12 - Mon, Nov 16

11:10 am - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

10:40 am - 8:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,763Korean Air

Thu, Nov 5 - Tue, Nov 10

11:10 am - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

10:40 am - 8:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,764Korean Air

Tue, Oct 20 - Wed, Oct 28

12:10 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 40mnonstop

10:40 am - 9:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,769Korean Air

Wed, Oct 28 - Tue, Nov 24

12:10 pm - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

10:40 am - 8:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,815Delta

Wed, Sep 23 - Wed, Oct 14

12:10 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 40mnonstop

10:40 am - 9:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,815Delta

Tue, Nov 3 - Mon, Nov 16

11:10 am - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

10:40 am - 8:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,815Delta

Wed, Oct 28 - Tue, Nov 24

12:10 pm - 5:15 pmORD Chicago O'Hare Intl-ICN Incheon Intl

15h 05mnonstop

10:40 am - 8:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$1,816Delta

Sat, Oct 24 - Mon, Nov 2

12:10 pm - 4:50 pmORD Chicago O'Hare Intl-ICN Incheon Intl

14h 40mnonstop

10:40 am - 8:30 amICN Incheon Intl-ORD Chicago O'Hare Intl

12h 50mnonstop

$10,859Multiple Airlines

Useful Info

Low season	January
High season	October
Cheapest flight	$454

Best time to beat the crowds with an average 36% drop in price.

Most popular time to fly with an average 3% increase in price.

Flight from Chicago 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.