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Find cheap flights from Illinois to South Korea from $520

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 8/24. 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
Sat 6/29
Sat 7/6

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In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

June

Cheapest flight

$520
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 21% 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

10/7Mon
1 stopEVA Air
28h 45mORD-GMP
10/23Wed
1 stopEVA Air
38h 25mGMP-ORD
$1,085
8/28Wed
1 stopEVA Air
22h 20mORD-GMP
9/4Wed
1 stopEVA Air
38h 25mGMP-ORD
$1,118
8/24Sat
1 stop
26h 48mORD-ICN
9/2Mon
3 stops
39h 52mICN-ORD
$1,218
8/26Mon
1 stopTurkish Airlines
22h 15mORD-ICN
9/30Mon
1 stopTurkish Airlines
37h 10mICN-ORD
$1,232
8/22Thu
1 stop
37h 10mORD-ICN
9/3Tue
2 stops
29h 58mICN-ORD
$1,248
10/3Thu
1 stopAmerican Airlines
17h 15mSTL-ICN
11/20Wed
1 stopAmerican Airlines
19h 01mICN-STL
$1,268
11/9Sat
2 stopsAmerican Airlines
30h 22mSTL-ICN
11/20Wed
1 stopAmerican Airlines
19h 01mICN-STL
$1,271
8/27Tue
2 stopsAir Canada
38h 05mSTL-ICN
9/10Tue
2 stopsAir Canada
35h 20mICN-STL
$1,284
7/10Wed
1 stopTurkish Airlines
22h 15mORD-ICN
7/17Wed
1 stopTurkish Airlines
37h 10mICN-ORD
$1,310
8/27Tue
1 stopAir Canada
30h 23mORD-ICN
9/10Tue
1 stopAir Canada
34h 26mICN-ORD
$1,326

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Recent one-way flight deals

8/24Sat
2 stops
33h 13mORD-ICN
$520
7/24Wed
2 stops
51h 54mORD-ICN
$531
7/29Mon
1 stopTurkish Airlines
22h 15mORD-ICN
$574
8/27Tue
1 stopTurkish Airlines
31h 10mORD-ICN
$588
9/25Wed
1 stopEVA Air
22h 20mORD-GMP
$642
8/18Sun
1 stopEVA Air
20h 30mORD-ICN
$643
9/10Tue
2 stopsCathay Pacific
36h 58mSTL-ICN
$709
9/6Fri
2 stopsCathay Pacific
43h 38mSTL-ICN
$765
7/2Tue
2 stopsAmerican Airlines
31h 37mSTL-ICN
$778
7/2Tue
1 stopAmerican Airlines
18h 15mSTL-ICN
$779

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Last minute flights from Illinois to South Korea

Last minute flight, train and bus deals

6/4Tue
multi-stop
33h 32mORD-ICN
6/18Tue
multi-stop
26h 15mICN-ORD
$1,500
6/4Tue
multi-stop
33h 32mORD-ICN
6/18Tue
multi-stop
31h 46mICN-ORD
$1,511
6/4Tue
multi-stop
33h 17mORD-ICN
6/8Sat
multi-stop
31h 34mICN-ORD
$1,539
6/1Sat
multi-stopLOT
21h 50mORD-ICN
8/25Sun
multi-stopLOT
46h 20mICN-ORD
$1,805
6/1Sat
multi-stopLOT
50h 20mORD-ICN
8/27Tue
multi-stopLOT
46h 20mICN-ORD
$1,808
6/2Sun
multi-stopTurkish Airlines
40h 15mORD-ICN
7/11Thu
multi-stopTurkish Airlines
24h 20mICN-ORD
$1,814
5/31Fri
multi-stopAir Canada
30h 08mORD-ICN
8/27Tue
multi-stopAir Canada
25h 40mICN-ORD
$1,839
5/31Fri
multi-stopAir Canada
30h 08mORD-ICN
8/27Tue
multi-stopAir Canada
27h 56mICN-ORD
$1,903
6/2Sun
multi-stopFinnair
33h 30mORD-ICN
7/11Thu
multi-stopFinnair
33h 45mICN-ORD
$1,928
6/4Tue
multi-stopFinnair
33h 30mORD-ICN
6/11Tue
multi-stopFinnair
45h 27mICN-ORD
$2,068

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Flights to South Korea

Return flight deals:

South Korea - Illinois

Cabin classes:

$4,310
$4,710
$6,458
$900