$379 Find Cheap Flights from Seoul Incheon Airport to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Incheon Intl to Illinois departing on 2/3. 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.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Illinois, as well as popular online travel agencies
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Best Illinois Flight Deals from Incheon Intl

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
Chicago1 stop$567
St. Louis
St. Louis2 stops$798

Good to know

Low season

February

High season

July

Cheapest flight

$379
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 35% increase in price.
Flight from Incheon to Chicago Midway Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Seoul Incheon Airport 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 Seoul Incheon Airport to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seoul Incheon Airport to 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 Seoul Incheon Airport 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 from Seoul Incheon Airport to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seoul Incheon Airport 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 from Seoul Incheon Airport to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be July, August and September. The cheapest month to fly from Incheon is March.
  • Morning departure is around 27% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Incheon Intl to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Incheon to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Incheon Intl 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.
8.4
Korean AirOverall score based on 1039 reviews
8.3Comfort
8.5Boarding
8.7Crew
8.2Entertainment
8.1Food
Airline reviews

I like it when the plane have waited for passengers like us who are trying to catch the plane. Detroit was my mom's port of entry we spent too much time looking for our luggages at baggage claim which no problem. But then the problem occur after the immigration when the homeland security agents forgot to give us our passports which it took so long to find them and I was very anxious because we might not be able to catch our flights but luckily the plane to knoxville still sitting there and waiting for us. Praise the Lord for everything.

10.0 ExcellentAnonymous, Jan 2025DTW - TYS
Read more Korean Air reviews

I like it when the plane have waited for passengers like us who are trying to catch the plane. Detroit was my mom's port of entry we spent too much time looking for our luggages at baggage claim which no problem. But then the problem occur after the immigration when the homeland security agents forgot to give us our passports which it took so long to find them and I was very anxious because we might not be able to catch our flights but luckily the plane to knoxville still sitting there and waiting for us. Praise the Lord for everything.

Absolutely wonderful,love the big clean plane specially the good food.

I took several flights that day, this was the only flight that was absolutely freezing!! It was so cold.

They changed aircrafts and they moved my seats that were already prepaid. I did not get the seats I paid for, so I got expensive seats that I didn't want

The flight was at least 3 hours late with not much of an explanation other than connecting flight was late

Good. Obviously there is a slightly condescending attitude of all American workers towards their customers but other than that all good.

Thanks for fixing the title of this question... the flight was a DELTA one marketed as a Korean Air flight. Which automatically makes it worse. The crew were actually rude in several cases and clearly lacked cultural sensitivity to the majority of the passengers (Koreans). This flight was also a minor heart attack before it started. Firstly, I thought I was buying a flight from Kayak, but it turns out they just acted as a front for this other company, UnderPricer, which took almost 24 hours to send a proper confirmation of the flight. We could not select the seats at checkout time either. We later submitted our seat selection to Korean Air, who proceeded to mess up the instructions to Delta, so our family was separated on the flight and our aisle seat was replaced with another middle seat.

It was a great experience in all aspects including passengers are respectful to each other. I will consider to fly with Korean Air again in the future.

It was a comfortable flight and the flight crew were lovely!

I won't hesitate to fly with Korean Air again and agian....if I can get a good deal.

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

Flight left early and arrived early. the whole trip was excellent.

It was terrible, I sat next to a person with a cat, I'm allergic to animal dander, my discomfort was extreme

Seats were really tight and the seat belts did not give enough slack.

Great list of movies, seat was generally comfortable, but not much shoulder room. The fresh baked cookie mostly made up for the lack of variety with the meals, which were all tomato based.

I like in St George and prefer to fly out of CDC than SGU. Hopefully, they will continue the flights out of Cedar

Broken jer bridge. Poor communication about it. Lost 2 of 4 luggage pieces

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

Newer plane, relatively easy boarding, not a full flight and was told that we could not be moved up because of weight and balance issues. Otherwise, a very good experience.

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

Flight was delayed two hours. No snacks and no tv screens. My bag got stuck in Chicago

The aircrew was solid, the flight was chill, I had no issues. The gate agent was not the best. I was trying to use a military bag upgrade to move my bag from under the seat to the overhead bins and he told me there’s no overhead bins on the plane, argued with me why booking put a military member in basic economy (I don’t really understand this) and made it an issue to even try to help me stating I’d have to call reservations to get a bag upgrade. When every other agent with United can add it at the gate, this man couldn’t be bothered.

lots of delays the crew were unclear about where to pick up my carry-on, which they took from me to check in on the plane.

They needed people to check a bag, they did check my bag and I had to wait 10 minutes after the flight to get it it wasn’t too bad

Did not even get on board. Was told I needed an esta agreement. Was not aware of this when I booked the fare and not told about them

My experience was medium staff where great I dislike flying in triple 7 seats very uncomfortable and no room on jet all the rest of the flights where great

Seating was horrible. Small seats. Access to flight information and extras very iser unfriendly. Kept losing internet after paying for it. Staff in madison was as unprofessional and unhelpful.

Delayed due to no crew. On a major holiday travel day.

Other than being delayed 5.5 hours and having to get a hotel because I missed my connecting flight, it was an okay flight. No in-flight Wi-Fi or entertainment.

It was nice being on a flight that had working wifi. The boarding was quick - why don’t all airlines have small boarding groups window to aisle? Makes so much sense!!! I was disappointed to be the first person stopped to have to gate check my carryon. Especially when there was plenty of overhead space at the back! But I get it…keeps it moving. Crew was nice.

The flight from Buffalo to Chicago was on an older and smaller plane. Seating was tight. Looking closely at the interior of the aircraft there were definitely signs of aging and wear.

The flight encountered a delay exceeding 4 hours. The food voucher issued was valued at $12, insufficient to cover our meal expenses. Consequently, I was unable to take my medication, leading to a drop in blood sugar levels and exacerbating my anxiety.

Airplane was cold. Flight attendants were rude. Phone charger did not work. No food available.

3hour delay In the last 3 months i had 3 flights and 2 of these had a more than 2:40 hrs delayed

My initial flight to ORD was extended without reason. We circled the airport a few time and then drove on the ground for at least 20 minutes. These kinds of delays are annoying but somewhat expected… it would be nice if the crew would make an announcement to give updates on how long we could expect to be delayed.

Fantastic. I am low vision and was impressed with how helpful and accommodating the service tam was. It was super appreciated! I was pleasantly surprised about how delicious the food was. Like, “I wish I had more even though I’m no longer hungry” delicious. 100% enjoyable trip.

My one complaint was that while we boarded using the standard enclosed gangway, when we arrived at SEATAC, the ground crew were slow to hook up the stairs. After reaching the tarmac we had to walk up a long ramp all outside in 35° weather. We just came from Bali and did not have warm weather clothes. This was in addition to having to collect our bags in Vancouver, take them through security again and then having to show our passports 4 more times all within the Air Canada section.

So we didn't actually go. We were hoping to go for the Inauguration of the first female president. When That Guy got elected, we bailed. Unfortunately, we got basically none of our money back, despite having travel insurance. Would not fly with Air Canada again unless I had to.

flight was delayed, there was open communication about the delay the delay pushed way past the posted delay time and

Ok Did not like that the second leg of flight was moved earlier making it a rush to make it

This was my first time flying on Air Canada and the experience was good and pleasant enough, great crew members and the price I paid was amazing,

This was my first time and the experience was good and pleasant enough, great crew members and the price I paid was amazing,

Overcharged by either United or Air Canada. Abuse of access to my credit/debit card.

I was overcharged either by United or sister airline Air Canada. It's exhausting dealing with companies nowadays that irresponsibly abuse access to credit/debit cards.

Air Canada is not only the worst airline in the business but the worst business in history.

Your crew was so so so wonderful Only thing sound be great if you kept some phone chargers and converters rest 👌👌👌👌

Book cheap flights from Incheon to Illinois

Recent round-trip flight deals

 
These are the cheapest round-trip flights from Incheon to Illinois found on KAYAK in the last 72 hours.
2/18Tue
1 stopUnited Airlines
25h 53mICN-ORD
2/19Wed
2 stopsUnited Airlines
60h 10mORD-ICN
$567
2/8Sat
3 stopsUnited Airlines
37h 16mICN-ORD
2/10Mon
2 stopsUnited Airlines
28h 05mORD-ICN
$666
1/31Fri
1 stopAmerican Airlines
28h 35mICN-ORD
2/12Wed
2 stopsAmerican Airlines
28h 55mORD-ICN
$748
2/12Wed
2 stopsAmerican Airlines
20h 19mICN-ORD
2/26Wed
2 stopsAmerican Airlines
28h 55mORD-ICN
$754
4/24Thu
1 stopAir Canada
32h 46mICN-ORD
5/1Thu
1 stopAir Canada
30h 29mORD-ICN
$859
4/25Fri
1 stopAir Canada
32h 46mICN-ORD
5/5Mon
1 stopAir Canada
30h 29mORD-ICN
$866
2/11Tue
1 stopDelta
29h 05mICN-MDW
2/18Tue
1 stopDelta
29h 31mMDW-ICN
$1,179
4/8Tue
2 stopsDelta
27h 27mICN-MDW
4/21Mon
1 stopDelta
17h 05mMDW-ICN
$1,180
4/8Tue
1 stopKorean Air
16h 20mICN-MDW
4/20Sun
1 stopKorean Air
17h 05mMDW-ICN
$1,296
6/3Tue
1 stopKorean Air
16h 15mICN-MDW
6/17Tue
1 stopKorean Air
18h 00mMDW-ICN
$1,305

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Incheon to Illinois found on KAYAK in the last 72 hours.
2/3Mon
3 stops
30h 52mICN-MDW
$379
2/2Sun
3 stops
46h 57mICN-MDW
$394
4/13Sun
2 stopsUnited Airlines
39h 17mICN-STL
$589
4/13Sun
2 stopsUnited Airlines
39h 17mICN-STL
$594
4/9Wed
1 stopDelta
21h 05mICN-STL
$623
4/25Fri
1 stopAir Canada
32h 46mICN-ORD
$628
4/24Thu
1 stopAir Canada
34h 54mICN-ORD
$656
2/3Mon
nonstopKorean Air
13h 00mICN-ORD
$1,013
4/4Fri
nonstopKorean Air
13h 10mICN-ORD
$1,022
4/25Fri
1 stopDelta
28h 52mICN-MDW
$1,071

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Last minute flights from Incheon Intl to Illinois

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Incheon to Illinois that are departing in the next 10 days.
1/22Wed
multi-stopUnited Airlines
38h 07mICN-ORD
1/24Fri
multi-stopUnited Airlines
18h 45mORD-ICN
$744
1/26Sun
multi-stopUnited Airlines
19h 20mICN-STL
2/2Sun
multi-stopUnited Airlines
36h 20mSTL-ICN
$899
1/26Sun
multi-stopUnited Airlines
15h 59mICN-STL
2/3Mon
multi-stopUnited Airlines
31h 40mSTL-ICN
$975
1/22Wed
multi-stopAmerican Airlines
28h 47mICN-ORD
1/24Fri
multi-stopAmerican Airlines
34h 41mORD-ICN
$1,075
1/22Wed
multi-stopAir Canada
27h 47mICN-ORD
1/25Sat
multi-stopAir Canada
32h 35mORD-ICN
$1,235
1/22Wed
multi-stopAir Canada
27h 47mICN-ORD
1/25Sat
multi-stopAir Canada
32h 15mORD-ICN
$1,302
1/22Wed
multi-stopDelta
29h 09mICN-MDW
1/25Sat
multi-stopDelta
29h 31mMDW-ICN
$1,454
1/22Wed
multi-stopKorean Air
18h 54mICN-ORD
1/25Sat
nonstopKorean Air
14h 50mORD-ICN
$1,477
1/22Wed
multi-stopKorean Air
18h 54mICN-ORD
1/23Thu
nonstopKorean Air
14h 50mORD-ICN
$1,502
1/22Wed
multi-stopDelta
17h 28mICN-ORD
1/24Fri
nonstopDelta
14h 50mORD-ICN
$1,508

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Everything you need to know for your flight from Incheon Intl to Illinois

Information on your arrival and departure airports

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