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Find cheap flights from Seoul Incheon Airport to Illinois from $394

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 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
Tue 6/4
Tue 6/11

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Best Illinois Flight Deals

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

Chicago
Chicago1 stop$696
Champaign
Champaign2 stops$2,600
St. Louis
St. Louis2 stops$973

Good to know

Low season

February

High season

September

Cheapest flight

$394
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 - booking Illinois flights

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Incheon 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 Incheon 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

  • Morning departure is around 85% 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 to Illinois

 
Need help choosing which airline to fly with from Incheon 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 1185 reviews
8.3Comfort
8.2Food
8.6Boarding
8.2Entertainment
8.8Crew
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

Staff on board were good - food was fine tasted good - tv was old 1970ts in seat back but hey it was a 2 out flight so no drama

Cons: "No entertainment, no place to plug in devices, extremely uncomfortable. The worst part was the Dixie cup of water served. Really?!? A bottle or larger cup would have broke the bank? Was so thirsty by the time we landed even though I had the attendants bring me water three times."

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

Excellent meal served with real utensils, cardboard served hot meals instead of plastic utensils and plastic covers. Quick service, friendly and accommodating stewards.

They made me check my carry on even though there was room We un boarded in a strange way but overall it was good

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.

The premium economy seats were not that great. It could have been more premium than economy seats.

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.

Transfer within the same terminal and lots of facilities at the airport.

Even though it was a very full flight, the service was still excellent, the plane did not feel too cramped and cabin crew made a sincere effort to help passengers find overhead space for stowing luggage.

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."

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 Incheon to Illinois

Recent round-trip flight deals

9/23Mon
1 stopAmerican Airlines
19h 47mICN-ORD
10/7Mon
1 stopAmerican Airlines
18h 06mORD-ICN
$696
6/13Thu
2 stopsAmerican Airlines
20h 33mICN-ORD
6/17Mon
1 stopAmerican Airlines
20h 15mORD-ICN
$699
9/23Mon
2 stopsAmerican Airlines
28h 05mICN-ORD
10/9Wed
1 stopAmerican Airlines
19h 15mORD-ICN
$700
9/20Fri
1 stopAir Canada
29h 54mICN-ORD
10/10Thu
1 stopAir Canada
17h 50mORD-ICN
$938
10/4Fri
2 stopsAir Canada
27h 56mICN-ORD
10/24Thu
2 stopsAir Canada
34h 30mORD-ICN
$939
10/25Fri
1 stopAsiana Airlines
19h 45mICN-ORD
2/12Wed
1 stopAsiana Airlines
19h 15mORD-ICN
$1,074
10/25Fri
1 stopUnited Airlines
22h 28mICN-ORD
2/12Wed
1 stopUnited Airlines
28h 00mORD-ICN
$1,095
5/21Tue
2 stopsUnited Airlines
21h 40mICN-ORD
6/28Fri
2 stopsUnited Airlines
19h 44mORD-ICN
$1,100
10/2Wed
1 stopKorean Air
15h 51mICN-STL
10/9Wed
1 stopKorean Air
18h 50mSTL-ICN
$1,267
9/11Wed
1 stopKorean Air
15h 51mICN-STL
9/18Wed
1 stopKorean Air
18h 50mSTL-ICN
$1,271

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Recent one-way flight deals

6/4Tue
3 stops
27h 20mICN-ORD
$394
6/2Sun
2 stops
41h 37mICN-ORD
$408
6/4Tue
2 stops
40h 57mICN-ORD
$409
6/3Mon
3 stops
36h 05mICN-ORD
$413
6/3Mon
3 stops
43h 37mICN-ORD
$418
8/26Mon
2 stopsSingapore Airlines
42h 55mICN-ORD
$824
9/9Mon
1 stopAsiana Airlines
36h 15mICN-ORD
$867
6/18Tue
1 stopKorean Air
16h 15mICN-STL
$1,027
8/29Thu
1 stopKorean Air
18h 59mICN-STL
$1,134
6/18Tue
3 stopsUnited Airlines
37h 39mICN-STL
$2,378

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Last minute flights from Incheon to Illinois

Last minute flight, train and bus deals

5/6Mon
multi-stopAmerican Airlines
26h 38mICN-ORD
6/4Tue
multi-stopAmerican Airlines
28h 51mORD-ICN
$751
5/6Mon
multi-stopAmerican Airlines
17h 20mICN-ORD
6/4Tue
multi-stopAmerican Airlines
28h 51mORD-ICN
$763
5/7Tue
multi-stopAmerican Airlines
27h 46mICN-ORD
6/4Tue
multi-stopAmerican Airlines
28h 51mORD-ICN
$765
5/8Wed
multi-stopUnited Airlines
16h 37mICN-ORD
5/28Tue
multi-stopUnited Airlines
27h 29mORD-ICN
$1,173
5/8Wed
multi-stop
18h 10mICN-ORD
5/28Tue
multi-stop
20h 00mORD-ICN
$1,302
5/7Tue
multi-stopAsiana Airlines
19h 45mICN-ORD
5/8Wed
multi-stopAsiana Airlines
20h 25mORD-ICN
$1,316
5/7Tue
multi-stopAsiana Airlines
18h 10mICN-ORD
5/9Thu
multi-stopAsiana Airlines
20h 10mORD-ICN
$1,320
5/7Tue
multi-stop
18h 10mICN-ORD
6/4Tue
multi-stop
21h 45mORD-ICN
$1,369
5/6Mon
multi-stopKorean Air
16h 19mICN-ORD
5/7Tue
nonstopKorean Air
14h 30mORD-ICN
$1,737
5/7Tue
multi-stopKorean Air
18h 45mICN-ORD
5/15Wed
nonstopKorean Air
14h 30mORD-ICN
$1,958

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Incheon - Illinois Flights

Departure:

Seoul Incheon Airport (ICN)South Korea

Return flight deals:

Illinois - Seoul Incheon Airport

Cabin classes:

$4,834
$1,376