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Find cheap flights from South Korea to Illinois from $399

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from South Korea to Illinois departing on 6/4. 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 6/8
Sat 6/15

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Good to know

Low season

February

High season

September

Cheapest flight

$399
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Incheon to Chicago O'Hare Airport

FAQs for booking flights from South Korea to Illinois

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

    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 South Korea to Illinois.

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

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

    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 Illinois with an airline and back to South Korea with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from South Korea to Illinois?

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

See more FAQs

Top 5 airlines serving from South Korea to Illinois

 
Need help choosing which airline to fly with from South Korea to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.5
Korean AirOverall score based on 1181 reviews
8.6Boarding
8.2Entertainment
8.3Comfort
8.8Crew
8.2Food
Airline reviews

The flight crews were extremely professional helpful and courteous. Departure and arrival times were accurate. No delay. Thanks

10.0 ExcellentAnonymous, Apr 2024ICN - SGN
Read more about Korean Air reviews

The flight crews were extremely professional helpful and courteous. Departure and arrival times were accurate. No delay. Thanks

Not very comfortable seated in the back plane due to turbulence

Everything about Korean air is great, hands down! Will always prefer this airline from other carriers.

Ford not that great the seat not to big for leg room like other airline

Crew was ok, but some passengers were a bit rude. Again, all outlets were not working, only the really slow charging usb plug on the entertainment system. Entertainment system was also bugged, some features just crash, the touch screen wasn't working and when trying to watch a movie the onscreen display kept flashing off and on making it very difficult to watch.

New plane. Perfect gluten free meal Very flawless procedures from check-in to the landing. Taking off on time and landing even earlier and the luggages are already there after shortest arrival report.

It was ok. Not good and not a bad experience

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

I like your stewardess, they are nice. However, your food could have been better and wheres your dessert? You do not offer beer or scotch. I do not drink alcohol biut my husband can have one or two, he has to ask if he can have one. during dinner or lunch, it should be offerred. Also, you do not have the most famous drinks ginger ale

Not accommodating ground staff On board slow service Crew members not very friendly

My overall experience with Singapore Airlines is great. Will definitely fly Singapore airline again.

When boarding, after business class should be premium economy, but economy class already lined-up at the gate blocking premium economy to board. Singapore airline crew should done a better job to organize this chaos :( Thank you.

It seems paying premium economy does not make difference with economy. No priority boarding, not worthy paying extra$$$ for premium economy.

Wonderful service, planes and interior in great condition, very pleasant experience

People were so nice! Economy seats were small and cramped feeling for me. I’m slender and 6 feet tall

They were able to assist my elderly father and myself after not being able to check in to scoot. The counter service was phenomenal. They did what they could to get us on the next plane so we could catch our Connecting flight. Scoot closed early on us so we ended up missing our flight.

They are great with every aspect of customer service. Helped my elderly father and aided him with using the restroom.

Due to the delay of my first flight, my connecting flight with JetBlue was canceled by Singapore Airlines, but the JetBlue crew was very accommodating and rebooked a seat for me. The crew was very nice and had good attitude.

The overall operation needs to be improved. The in-flight services took forever and sometimes ran out of options.

Check in was snails pace, only 1 of the luggage screen was working so long lines, an hour to check in Nobody seemed to want to fix the issue Flight was 45 minutes late Scoot is a mini sized plane ( sardine class plane), literally felt slammed between people

At the boarding gate, Jeju airline accepted "carry on" bags for checking in for free due to the "limited cabin space". This is because most passengers were carrying multiple bags that exceed the size and weight limit for carry on items. Rather than inspecting carry-on bags at the counter and requiring excess bags to be checked in for a fee, they allowed freeloading at the boarding gate to to the detriment of those who paid the fee for checked bags. This is totally unfair.

As posred earlier the crew was very accommodating & professional. Thank You Allen

All though you can not help it the kids was loud and unruly, The crew was very accommodating and professional. Thank You Allen.

No priority counter check in for families with young children.

The flight was delayed from GUM to ICN, there was no notification on how delayed the flight would be. Although we received notice, there was no specified time given. The flight was also very uncomfortable.

Cons: "Sold me a ticket then cancelled 15 minutes later due to not having updated information from the airline on bookings."

Captain smooth landing, Crew efficient and helpful. We saw Mt Fuji from the plane. Thanks.

On time and smooth flight from San Juan direct to Sint Maarten.

Just to be expected on a budget airline. Since all the flights were either late on the evening it would help to offer some food for purchase Since you tourists cannot buy decent food withoit local vaccination record in hong Kong this would really to help Using phone to submit electronic data is great but for the elderly this is a hassle

Flight cancelled without notidication, had to book an emergency replacement flight at the counter

Cons: "We should have been allowed to sit near our family (wives). There was empty row but they wanted to charge us to move up. Ridiculous!!"
Pros: "Absolutely nothing"
Cons: "The flight took forever to land. Pilot said prepare for descent and we stayed in the air for another forty minutes. The air smelled awful. One of the worst flights I’ve ever taken."
Pros: "I was able to purchase extended seat room for a reasonable price."
Cons: "No free drinks or entertainment or anything to help pass the flight time."
Cons: "Staff at check-in counter were not helpful. They were there and they weren't. We were there at the front while two of the counters were ready but didn't call us up. They were chatting with each other instead. We I asked them are they ready to work, she ask me where was I heading. What is the difference?"
Pros: "Price was good and HK to Tokyo times were good"
Cons: "No entertainment on 5 hour flight"
Pros: "Nothing in particular."
Cons: "They don't tell you that 1) you aend up paying more than other airlines charge by the time you add various 'extras'; and 2) you have to go through immigration because they are in another terminal. This means two hours of work, plus I missed my flight because I didn't have 3 hrs. They said my fault."

ok flight, but charged for everything. water, food, baggage. no free water available, I had to plead to give me water to take medicine.

Need to consider about zero entertainment services and lack of flight information!

I can't board the 2nd flight due to the last 1st flight. In the 1st flight check-in, I can't board due to the stupid problem of K-ETA visa. The booking system and the flight company should inform the customer a few days earlier. This is the worse experience in my life. I won't use KAYAK and the airline anymore. My friends were also surprised about this stupid situation. I won't use KAYAK and T'way anymore.

I can't board the flight due to the K-ETA problem. You should inform the customer clearly a few days before the flight. I can't cancel/change the flight now. This is the worst experience in my life. I also never hear about this kind of bad experience. I won't use the booking system and the flight company anymore.

Pros: "We received great assistance at the check-in counter and were helped out even though we arrived late. The ground crew was actually great."
Cons: "We only got water. Felt like a bus ride. Minimum comfort but fair for the price."

Book cheap flights from South Korea to Illinois

Recent round-trip flight deals

6/18Tue
2 stopsAmerican Airlines
27h 55mICN-ORD
6/19Wed
2 stopsAmerican Airlines
27h 45mORD-ICN
$678
6/3Mon
1 stopAmerican Airlines
19h 35mICN-ORD
6/19Wed
1 stopAmerican Airlines
19h 13mORD-ICN
$707
6/3Mon
1 stopAmerican Airlines
17h 20mICN-ORD
6/18Tue
1 stopAmerican Airlines
19h 13mORD-ICN
$709
10/25Fri
1 stopJapan Airlines
15h 15mGMP-ORD
2/12Wed
1 stopJapan Airlines
33h 35mORD-GMP
$910
10/24Thu
1 stopJapan Airlines
15h 15mGMP-ORD
2/18Tue
1 stopJapan Airlines
17h 00mORD-GMP
$920
10/24Thu
1 stopAsiana Airlines
18h 15mICN-ORD
11/2Sat
1 stopAsiana Airlines
20h 05mORD-ICN
$1,065
10/23Wed
1 stopUnited Airlines
26h 53mICN-ORD
10/27Sun
1 stopUnited Airlines
27h 54mORD-ICN
$1,093
10/24Thu
1 stopUnited Airlines
17h 55mICN-ORD
2/18Tue
1 stopUnited Airlines
20h 40mORD-ICN
$1,106
9/19Thu
1 stopKorean Air
16h 33mICN-STL
9/28Sat
1 stopKorean Air
18h 50mSTL-ICN
$1,339
9/20Fri
1 stopKorean Air
16h 33mICN-STL
9/28Sat
1 stopKorean Air
17h 10mSTL-ICN
$1,362

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Recent one-way flight deals

6/4Tue
2 stops
40h 57mICN-ORD
$399
6/4Tue
3 stops
36h 01mICN-ORD
$403
6/4Tue
1 stopAmerican Airlines
30h 30mICN-ORD
$429
5/21Tue
1 stopAmerican Airlines
19h 35mICN-ORD
$430
10/31Thu
1 stopJapan Airlines
14h 35mGMP-ORD
$665
10/31Thu
2 stopsJapan Airlines
21h 35mGMP-ORD
$675
5/17Fri
1 stopKorean Air
16h 12mICN-STL
$936
7/10Wed
1 stopKorean Air
15h 56mICN-STL
$1,216
8/16Fri
2 stopsUnited Airlines
24h 47mICN-STL
$1,250
8/13Tue
2 stopsUnited Airlines
31h 11mICN-STL
$1,255

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Last minute flights to Illinois

Last minute flight, train and bus deals

5/14Tue
multi-stopAmerican Airlines
27h 46mICN-ORD
5/21Tue
multi-stopAmerican Airlines
28h 51mORD-ICN
$710
5/14Tue
multi-stopAmerican Airlines
20h 34mICN-ORD
5/21Tue
multi-stopAmerican Airlines
28h 51mORD-ICN
$711
5/13Mon
multi-stop
42h 27mICN-ORD
7/31Wed
multi-stop
31h 10mORD-ICN
$1,118
5/10Fri
multi-stop
37h 22mICN-ORD
9/5Thu
multi-stop
36h 53mORD-ICN
$1,255
5/10Fri
multi-stopUnited Airlines
35h 52mICN-ORD
5/15Wed
multi-stopUnited Airlines
34h 30mORD-ICN
$1,367
5/10Fri
multi-stopAsiana Airlines
19h 45mICN-ORD
5/13Mon
multi-stopAsiana Airlines
20h 10mORD-ICN
$1,383
5/10Fri
multi-stopAsiana Airlines
18h 10mICN-ORD
9/5Thu
multi-stopAsiana Airlines
30h 50mORD-ICN
$1,389
5/12Sun
multi-stopUnited Airlines
33h 00mICN-ORD
5/25Sat
multi-stopUnited Airlines
41h 03mORD-ICN
$1,391
5/10Fri
multi-stopKorean Air
16h 59mICN-ORD
9/5Thu
nonstopKorean Air
14h 30mORD-ICN
$1,548
5/13Mon
multi-stopKorean Air
16h 59mICN-ORD
10/12Sat
nonstopKorean Air
14h 30mORD-ICN
$1,603

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Flights to Illinois

Return flight deals:

Illinois - South Korea

Cabin classes:

$4,911
$1,416