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Find cheap flights from Illinois to South Korea from $525

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 9/21. 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 7/8
Mon 7/15

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In the last 7 days travelers have searched 43,124,673 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

June

Cheapest flight

$525
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

10/1Tue
1 stopCathay Pacific
32h 05mORD-ICN
10/21Mon
1 stopCathay Pacific
37h 15mICN-ORD
$953
10/9Wed
1 stopTurkish Airlines
31h 20mORD-ICN
10/23Wed
1 stopTurkish Airlines
32h 25mICN-ORD
$960
8/25Sun
1 stopEVA Air
28h 15mORD-ICN
9/30Mon
1 stopEVA Air
22h 45mICN-ORD
$1,048
11/27Wed
1 stopEVA Air
28h 15mORD-ICN
12/3Tue
1 stopEVA Air
23h 05mICN-ORD
$1,083
9/2Mon
1 stop
33h 25mORD-ICN
9/10Tue
2 stops
24h 28mICN-ORD
$1,104
11/14Thu
1 stopLOT
42h 15mORD-ICN
11/24Sun
1 stopLOT
26h 10mICN-ORD
$1,187
9/24Tue
2 stops
26h 30mORD-ICN
10/1Tue
1 stop
26h 44mICN-ORD
$1,219
9/7Sat
2 stopsAmerican Airlines
37h 47mMLI-ICN
9/15Sun
2 stopsAmerican Airlines
55h 38mICN-MLI
$1,239
9/7Sat
1 stopAmerican Airlines
37h 40mMLI-ICN
9/15Sun
2 stopsAmerican Airlines
55h 38mICN-MLI
$1,246
8/19Mon
1 stopLOT
23h 10mORD-ICN
11/19Tue
1 stopLOT
46h 25mICN-ORD
$1,250

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Recent one-way flight deals

9/21Sat
2 stops
44h 35mORD-ICN
$525
7/17Wed
3 stops
54h 47mMDW-ICN
$528
8/6Tue
1 stopTurkish Airlines
31h 10mORD-ICN
$574
7/31Wed
1 stopTurkish Airlines
31h 20mORD-ICN
$580
8/18Sun
1 stopEVA Air
28h 15mORD-ICN
$623
8/20Tue
1 stopEVA Air
28h 15mORD-ICN
$634
9/10Tue
1 stopCathay Pacific
37h 10mORD-ICN
$691
8/1Thu
1 stopCathay Pacific
30h 30mORD-ICN
$736
7/10Wed
1 stopAmerican Airlines
18h 15mSTL-ICN
$779
8/1Thu
1 stopAmerican Airlines
20h 15mORD-ICN
$915

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Last minute flights from Illinois to South Korea

Last minute flight, train and bus deals

6/13Thu
multi-stop
54h 15mORD-ICN
6/20Thu
multi-stop
32h 22mICN-ORD
$1,782
6/10Mon
multi-stop
44h 10mORD-ICN
6/15Sat
multi-stop
54h 59mICN-ORD
$1,883
6/12Wed
multi-stopFinnair
23h 50mORD-ICN
7/2Tue
multi-stopFinnair
33h 45mICN-ORD
$1,923
6/10Mon
multi-stopFinnair
32h 05mORD-ICN
6/21Fri
multi-stopFinnair
33h 45mICN-ORD
$1,928
6/10Mon
multi-stopLOT
42h 40mORD-ICN
6/15Sat
multi-stopLOT
44h 55mICN-ORD
$1,940
6/11Tue
multi-stopAir Canada
34h 25mORD-ICN
7/9Tue
multi-stopAir Canada
34h 21mICN-ORD
$1,962
6/10Mon
multi-stopAir Canada
34h 25mORD-ICN
6/21Fri
multi-stopAir Canada
27h 57mICN-ORD
$1,996
6/13Thu
multi-stopAir France
26h 15mORD-ICN
6/27Thu
multi-stopAir France
41h 10mICN-ORD
$1,999
6/12Wed
multi-stopAir France
25h 25mORD-ICN
6/26Wed
multi-stopAir France
41h 50mICN-ORD
$2,147
6/12Wed
multi-stopLOT
23h 10mORD-ICN
6/26Wed
multi-stopLOT
44h 55mICN-ORD
$2,164

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Flights to South Korea

Return flight deals:

South Korea - Illinois

Cabin classes:

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