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Find cheap flights from Illinois to South Korea from $426

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Illinois to South Korea departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 5/27
Mon 6/3

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In the last 7 days travelers have searched 43,623,357 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

June

Cheapest flight

$426
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from Chicago O'Hare Airport to Incheon

FAQs for booking flights from Illinois to South Korea

  • How does KAYAK find such low prices on flights from Illinois to South Korea?

    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 South Korea.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to South Korea 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 South Korea?

    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 South Korea 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 South Korea?

    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 South Korea from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Illinois to South Korea

Recent round-trip flight deals

9/24Tue
1 stopCathay Pacific
32h 05mORD-ICN
10/17Thu
1 stopCathay Pacific
32h 10mICN-ORD
$945
10/17Thu
1 stopCathay Pacific
30h 30mORD-ICN
10/23Wed
1 stopCathay Pacific
42h 15mICN-ORD
$950
9/18Wed
1 stopTurkish Airlines
31h 20mORD-ICN
10/10Thu
1 stopTurkish Airlines
32h 25mICN-ORD
$959
10/15Tue
1 stopTurkish Airlines
31h 10mORD-ICN
11/8Fri
1 stopTurkish Airlines
39h 20mICN-ORD
$986
9/23Mon
1 stopEVA Air
20h 30mORD-ICN
10/1Tue
1 stopEVA Air
22h 45mICN-ORD
$1,051
9/17Tue
1 stopEVA Air
28h 15mORD-ICN
10/10Thu
1 stopEVA Air
22h 45mICN-ORD
$1,081
9/24Tue
1 stopAir India
32h 40mORD-ICN
10/1Tue
1 stopAir India
33h 10mICN-ORD
$1,122
9/17Tue
1 stopAir India
32h 40mORD-ICN
9/28Sat
1 stopAir India
33h 10mICN-ORD
$1,141
9/25Wed
1 stop
28h 15mORD-ICN
10/3Thu
2 stops
24h 13mICN-ORD
$1,235
10/9Wed
2 stops
28h 10mORD-ICN
10/16Wed
1 stop
38h 50mICN-ORD
$1,239

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Recent one-way flight deals

5/8Wed
3 stops
33h 17mORD-ICN
$426
5/8Wed
2 stops
27h 03mORD-ICN
$483
7/31Wed
1 stopTurkish Airlines
22h 15mORD-ICN
$582
8/19Mon
1 stopTurkish Airlines
22h 15mORD-ICN
$585
8/18Sun
1 stopEVA Air
20h 30mORD-ICN
$623
9/10Tue
1 stopCathay Pacific
30h 30mORD-ICN
$639
8/20Tue
1 stopEVA Air
28h 15mORD-ICN
$640
9/10Tue
1 stopCathay Pacific
32h 05mORD-ICN
$648
7/16Tue
2 stopsAmerican Airlines
31h 29mSTL-ICN
$858
7/12Fri
1 stopAmerican Airlines
19h 53mSTL-ICN
$1,168

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Last minute flights from Illinois to South Korea

Last minute flight, train and bus deals

4/30Tue
multi-stopCathay Pacific
30h 30mORD-ICN
5/20Mon
multi-stopCathay Pacific
32h 10mICN-ORD
$1,049
4/30Tue
multi-stopCathay Pacific
37h 10mORD-ICN
5/10Fri
multi-stopCathay Pacific
38h 50mICN-ORD
$1,089
5/2Thu
multi-stop
35h 40mORD-ICN
5/8Wed
multi-stop
36h 25mICN-ORD
$1,104
5/2Thu
multi-stopTurkish Airlines
22h 15mORD-ICN
5/10Fri
multi-stopTurkish Airlines
37h 15mICN-ORD
$1,130
4/29Mon
multi-stop
21h 05mORD-ICN
5/29Wed
multi-stop
36h 25mICN-ORD
$1,133
5/2Thu
multi-stopTurkish Airlines
22h 15mORD-ICN
5/9Thu
multi-stopTurkish Airlines
24h 20mICN-ORD
$1,142
4/30Tue
multi-stopEVA Air
20h 30mORD-ICN
12/21Sat
multi-stopEVA Air
23h 05mICN-ORD
$1,211
4/28Sun
multi-stopEVA Air
20h 30mORD-ICN
5/29Wed
multi-stopEVA Air
23h 00mICN-ORD
$1,242
5/2Thu
multi-stopAmerican Airlines
18h 14mSTL-ICN
5/16Thu
multi-stopAmerican Airlines
16h 03mICN-STL
$1,327
5/2Thu
multi-stopAmerican Airlines
32h 34mSTL-ICN
5/16Thu
multi-stopAmerican Airlines
30h 28mICN-STL
$1,328

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Flights to South Korea

Return flight deals:

South Korea - Illinois

Cabin classes:

$5,176
$885