$329+ Cheap flights from Incheon Intl (ICN) to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Incheon Intl to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Incheon Intl to Illinois
Keep the following information in mind while searching for Incheon Intl to Illinois flight deals. Data was last updated April 17, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $635 (United Airlines) |
One-way from | $330 (Kiwi.com) |
Popular in | August |
Cheapest in | February |
Average price | $1,223 |
Good round-trip deal | $1,289 or less |
Good one-way deal | $912 or less |
Find flight deals from Incheon Intl to Illinois
Cheapest flights from Incheon Intl to IllinoisExplore the most affordable flight options available from Incheon Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.
Explore the most affordable flight options available from Incheon Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Expedia deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KAYAK deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Korean Air deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Korean Air deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Incheon Intl to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
IncheonChicago
ICN - ORD
ICNORD
Incheon Intl
Sun 4/27
3:45 pm-3:10 pm
1 stop37h 25m
Chicago O'Hare Intl
Tue 4/29
12:45 pm-3:00 pm
1 stop36h 15m
IncheonChicago
ICN - ORD
ICNORD
Incheon Intl
Wed 5/7
5:45 pm-2:43 pm
1 stop34h 58m
Chicago O'Hare Intl
Wed 5/14
3:35 pm-4:05 pm
1 stop34h 30m
IncheonChicago
ICN - MDW
ICNMDW
Incheon Intl
Sun 5/25
4:00 pm-1:38 pm
2 stops35h 38m
Chicago Midway
Sun 6/1
8:41 pm-5:20 pm
2 stops30h 39m
IncheonChicago
ICN - ORD
ICNORD
Incheon Intl
Sat 5/10
7:20 pm-9:59 pm
1 stop16h 39m
Chicago O'Hare Intl
Thu 8/7
8:00 am-4:30 pm
1 stop18h 30m
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Sun 5/11
5:45 pm-7:58 pm
2 stops40h 13m
Lambert-St Louis
Thu 5/15
1:30 pm-4:05 pm
2 stops36h 35m
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Sun 5/11
6:20 pm-11:59 pm
1 stop19h 39m
Lambert-St Louis
Thu 5/15
6:22 pm-5:55 pm
1 stop33h 33m
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Mon 9/15
5:25 pm-10:27 pm
1 stop19h 02m
Lambert-St Louis
Tue 10/14
5:28 am-3:30 pm
1 stop20h 02m
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Thu 5/22
8:55 pm-5:03 am
1 stop22h 08m
Lambert-St Louis
Fri 6/20
7:10 pm-4:30 am
1 stop19h 20m
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Mon 6/16
11:30 am-8:48 pm
2 stops23h 18m
Lambert-St Louis
Thu 6/26
5:41 pm-4:20 am
1 stop20h 39m
IncheonChicago
ICN - MDW
ICNMDW
Incheon Intl
Thu 9/18
6:40 pm-1:09 pm
1 stop32h 29m
Chicago Midway
Thu 10/16
9:20 am-5:20 pm
1 stop18h 00m
Best time to book a flight from Incheon Intl to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Incheon Intl with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Incheon Intl Airport to Illinois
What is the cheapest month to book a flight from Incheon Intl Airport to Illinois?
Currently, August is the cheapest month in which you can book a flight from Incheon Intl Airport to Illinois (average of $245). Flying from Incheon Intl Airport to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ICN to IL?
Find hourly flight availability from Incheon Intl to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.
When flying from Incheon Intl Airport to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from Incheon Intl Airport to Illinois
Explore weekly flight availability from Incheon Intl to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 17, 2025.
The most flights from ICN to USIL are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
Rainfall in Illinois by month
Plan your trip to Illinois by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.
Temperature in Illinois by month
Plan your trip to Illinois by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated April 17, 2025.
Peruse reviews from past customers who have flown with EVA Air, Korean Air and Japan Airlines from Seoul to Illinois to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Boarding
Crew
Food
Entertainment
Overall
Reviews
Piotr,Feb 2025
TPE - ORD
Comfort
Boarding
Crew
Food
Entertainment
Overall
Reviews
Piotr,Feb 2025
TPE - ORD
Comfort
Boarding
Crew
Food
Entertainment
Overall
Reviews
Piotr,Feb 2025
TPE - ORD
Comfort
Boarding
Crew
Food
Entertainment
Overall
Reviews
Piotr,Feb 2025
TPE - ORD
Comfort
Boarding
Crew
Food
Entertainment
Overall
Reviews
Piotr,Feb 2025
TPE - ORD
Comfort
Boarding
Crew
Food
Entertainment
Overall
Reviews
Piotr,Feb 2025
TPE - ORD
Related info for your journey
Find useful and relevant information for your journey from Incheon Intl to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Incheon Intl to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Incheon Intl to Illinois
Discover the top 6 airlines that operate flights from Incheon Intl to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$697 | Average$976 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$730 | Average$1,062 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,047 | Average$1,268 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$1,119 | Average$1,590 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,186 | Average$1,414 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,269 | Average$1,485 | FlexibilityNo cancel fee | On-timeN/A |