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Cheap Flights from Incheon to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Sort by: Cheapest
Chicago
12h 50mNonstop
from $944per person
Champaign
33h 06m4 stops
from $1,473per person
Booking Insights

Price, demand and travel trends for Incheon Intl Airport to Illinois flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Incheon Intl Airport to Illinois recently?

The cheapest fare from Incheon Intl Airport to Illinois in the last week was $944 round-trip, to Chicago O'Hare Intl (ORD).

How do fares into airports in Illinois compare?

Flights from Incheon Intl Airport to Illinois arrive at a single airport, Chicago O'Hare Intl (ORD). Round-trip fares average about $1,322.

Are flights from Incheon Intl Airport to Illinois cheaper or more expensive than last year?

Fares from Incheon Intl Airport to Illinois are about 18% lower than they were in November last year, averaging $866 round-trip.

What's the cheapest month to fly from Incheon Intl Airport to Illinois?

December is typically the cheapest month to fly from Incheon Intl Airport to Illinois, with round-trip fares averaging $1,116. July and October are usually the most expensive, averaging $1,711 and $1,512, respectively.

How do fares from Incheon Intl Airport to Illinois vary by day of the week?

On average, Monday is the cheapest day to fly from Incheon Intl Airport to Illinois and Saturday is the most expensive. Looking at the past 12 months of KAYAK data, it's 25% more expensive to fly on a Saturday compared to Monday.

What's the best time of day to fly from Incheon Intl Airport to Illinois?

It's cheapest to fly to Illinois at night with average prices of $1,130. The morning is the most expensive time to fly, with average prices of $1,531.

What's the best time to book a flight from Incheon Intl Airport to Illinois?

Book your flights 25 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 25% compared to booking at the last minute (within 2 weeks of departure).

Key details for Incheon Intl Airport to Illinois flights

Low season

February

Cheapest flight

$502
Beat the crowds with an average 34% drop in travelers.
The most popular month to fly with an average 44% increase in travelers.
One-way flight from Incheon Intl Airport to Chicago O'Hare Intl Airport

Your Incheon Intl Airport to Illinois flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Incheon Intl Airport to Illinois?

    Yes. Fares from Incheon Intl Airport to Illinois are low right now. As a rule of thumb, a round-trip under $1,108 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Incheon Intl Airport to Illinois?

    Over the past 12 months, round-trip fares from Incheon Intl Airport to Illinois have typically cost between $1,108 and $1,621.

  • What are the main airports serving Illinois?

    Illinois has 17 airports. 95% of KAYAK users choose Chicago O'Hare Intl (ORD) as their arrival airport.

  • Which airlines fly nonstop from Incheon Intl Airport to Illinois?

    Based on the flight schedule for the next 3 months, just one airline regularly flies nonstop from Incheon Intl Airport to Illinois: Korean Air.

  • Which destinations in Illinois can I fly nonstop from Incheon Intl Airport?

    Based on the flight schedule for the next 3 months, you can fly nonstop from Incheon Intl Airport to just one destination in Illinois: Chicago.

  • Is it cheaper to fly with a layover from Incheon Intl Airport to Illinois?

    Yes, nonstop flights from Incheon Intl Airport to Illinois average $1,574 over the past 12 months, but flights with a layover can cost less. The most affordable connecting airports are:

    • Vancouver Intl (YVR) (avg. price $890)
    • Manila Ninoy Aquino Intl (MNL) (avg. price $1,006)
    • San Francisco (SFO) (avg. price $1,016)

  • How long is a flight from Incheon Intl Airport to Illinois?

    Nonstop flights from Incheon Intl Airport to Illinois take 12h 50m on average. All flights fly into Chicago O'Hare Intl (ORD).

  • Which cabin classes are available from Incheon Intl Airport to Illinois?

    On flights from Incheon Intl Airport to Illinois you can book Economy Class, Premium Economy Class, Business Class or First Class.

  • What are some popular landmarks around Illinois?

    Illinois is home to many popular sights. KAYAK travelers' favorites include:

    • Magnificent Mile
    • Grant Park
    • Soldier Field
    • River North

  • What are the earliest and latest flights from Incheon Intl Airport to Illinois?

    The earliest nonstop flight from Incheon Intl Airport to Illinois departs at 10:40 am and the latest leaves at 10:40 am. Nonstop flights take about 12h 50m.

Your guide to booking Incheon Intl Airport to Illinois flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 25 weeks before your trip. KAYAK data shows fares in this window are around 25% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • Flexible with your dates? Fly in December to save some money. It's typically the cheapest month on this route, while flights in July will cost you the most.
  • Fly out on a Monday to get the cheapest fares. Avoid Saturday flights, which are about 25% more expensive.
  • Start your trip in Chicago, the most popular destination in Illinois. From there, it's easy to continue on to other popular spots such as Rosemont, Schaumburg and Champaign.
  • Whether you're trying to save time or money, Chicago O'Hare Intl (ORD) is usually your best option from Incheon Intl Airport.

Reviews of the 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.
8.4
Korean AirOverall score based on 1218 reviews
8.3Comfort
8.2Entertainment
8.5Boarding
8.7Crew
8.1Food
Airline reviews

The business class is excellent. I loved the food, and the crew was very attentive and professional. From boarding to arrival, everything felt smooth and well-organised.

10.0 ExcellentFiruz, Apr 2026
Read more Korean Air reviews

The business class is excellent. I loved the food, and the crew was very attentive and professional. From boarding to arrival, everything felt smooth and well-organised.

Great service and comfort level. You can have more of vegetarian food options.

It’s great, long flight and arrive safe at destination

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

I can't believe they put my wife and I in the two middle seats! It is a very long flight and we had single flyers on either side of us blocking the way to the bathroom! There's no reason to not give one of us the isle seat so we could have managed bathroom needs and snacks with convenience. So I think very poorly of Korean air to put us both in the middle, I've never had that happen before and will probably avoid this airline in the future because of this. We tried to have them change it but they didn't so you pretty much lost a customer because of it.

One of the flight attendants stepped on my foot. I was on the aisle seat. A lady inside needed to get out. So Instood. Just then, a flight attentendant came wuicklybtheoughbthe aisle and stepprd on my sock covered toes. I let out a small sound. She stopped momentarily, but didn’t ask how I was just took off of the aisle. Never came back to see how I was. Fortunately, I was not really hurt other than a slight soreness in my toes. But I found that to be very negligent.

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

They were very accommodating of a dietary issue. Nice movie & tv selections. Non-stop helped get through a very long (15 hr) flight

Not very comfortable seated in the back plane due to turbulence

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

Coming back to America was a peaceful flight everyone and everything was perfect

Staff always with a smile and very helpful with my mom who has mobility issues.

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Two meals were served on this flight; one was a repeat of the meal I had had on the flight immediately preceding this one, which was bad enough I didn't even try it. Drinks were very limited. All I wanted was water, and on a 10.5 hour flight, I was given 3 cups of about 3 ounces each.

We took business class, It was comfortable and I was able to sleep.

Great service. They could offer vegetarian food and do more to reduce waste.

Very comfortable seats, delicious meals, and friendly and helpful staff

The legroom in economy was better than other airlines. Since my legs are long, that means a lot. Also, the A380 from Los Angeles to Incheon gave passengers a smooth ride. Everything went smoothly from boarding to disembarkation in Incheon. I'd fly Asiana again!

Staff was excellent. Food could use more variety. -More vegetable options. Menu didn't have juice or soda listed. -The croissants were outstanding!

Requested an aisle seat at the gate and got it. The staff so friendly

My experience was very good. Everything was excellent except for the food. The food was mediocre. Not alot of options and the flavor was okay.

Flight was very delayed so I was able to get on an earlier flight via stand-by. Crew communicated effectively around delay and worked to make customers comfortable. Wifi was ok, streaming TV was great. App functionality broke down once I was moved to stand-by on earlier flight.

Sat in the tarmac at O’Hare for 65 minutes. This is a regular occurrence for delta at O’Hare

Delta was fine though my flight was delayed 4 hours into LGA and my return into ORD involved a taxi of 1+ hour to the gate

It was as good as it could be. Flying is not a pleasant experience these days.

The plane was very warm the entire time, despite my vents being open. Additionally, we didn't have internet on our personal devices

One of the best airlines that I flew on, the flight attendants were very attentive and professional.

Check in process was terrible. Lady at counter didn’t know what she was doing

They boarded very early. We rushed to transfer and got to the gate 5 minutes after boarding was scheduled to start, however they were making a last call and holding signs for “all customers” to board. They were helpful at the gate, but I was surprised to see that we were some of the last to board at 5 minutes after scheduled boarding was to begin.

We left nearly 3 hours late...so that was not a good experience. We boarded and then ended up about 1 hour stuck at the gate. Not a good experience.

I appreciate how quickly and kindly the people at the gate at DCA accommodated several of us who wanted to switch from the 6pm flight to the 5pm flight at the last minute. The flight crew was helpful to us too (dealing with luggage).

Went from a plane with free internet to a plane with paid internet. The entertainment screens didn’t work. Crammed in the back and the crew hit my knee with the cart really hard - it hurt. No apologies. I’m still limping today.

Waited on tarmac to take off for approximately 15-25 minutes. When landing, the taxi to our gate took a similar amount of time. This happened on both of my United flights.

Comparing premium economy trips to other airlines United performs poorly in regard to food, service, bathroom cleanliness etc

Fine except from Chicago to moline three different gate changes and flight times

When booking, the connection times seem fine. But in reality, my two connections were cut short by the first leg being delayed due to issues at the destination (too much traffic going into SFO, ORD) and it became extremely stressful.

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

The crews are great.. Easy boarding. Inflight entertainment ok. Food is a disappointment.

There was no door or screen for privacy in Business class. With the price and class, the privacy is something the passengers expect. Understandably not all plane has the option but consider reconfiguration of the cabin. I would rather take other airlines in the future. The meal and snack options are different than what was in the website and printed information sheet. I also missed snacks but never offered again. It was not worth the price I paid.

$2600 for the flight with food then not even a dog will eat specially breakfast

Flight attendants were ok. But it was a full flight.

The service was good ... I wondered if the stewardess was OK though as she seemed quite sad.

Terrible food, unprofessional flight attendants, and an uncomfortable seat. The food they provided was the worst I have ever had since I flew. They were worse than any cheap food you can get at convenience stores. A flight attendant talked to me in an insulting and demanding manner. If she wanted to say something, she should have said it professionally and kindly. No flight attendants served any drinks or snacks. If I needed a drink or snacks, I had to get up from my seat and go to the airplane's back area and serve myself. What were the flight attendants doing during their work shifts? A man sitting in front of me fully extended his chair to the back, so I had virtually no space to eat with reasonable comfort. Many people were so inconsiderate of others and fully extended their chairs to the back that they did not have enough space to eat. Flight attendants ignored these situations and never bothered to tell passengers to return their chairs to upright positions during the mealtime. I want to be comfortable and don't care if others feel uncomfortable because of me. Those were the dominant thoughts of people in that airplane. I paid more than $2000.00 for this terrible experience.

Very nice. Cabin crew is very attentive and professional. So nice!

Not allowing food choice through app. Very hard to find,

No pillow, blanket, or complimentary food provided on 5 hour flight

I had a great time flying with Air Canada on my 16+ hour journey over to Korea. The food was wonderful they had all kinds of options. Keep up the good work Air Canada I will most definitely fly with you again.

Food made me sick. There were delays on almost every flight.

The flight was delayed, gate crew gave confusing and contradictory instructions on where to queue.

More options for your flight from Incheon to Illinois

Complete your trip to Illinois with a hotel stay or car rental