$423+ Cheap flights from Illinois to Incheon Intl (ICN)
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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ICN
May 5 — May 121
1 adult, Economy
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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
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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 Illinois to Incheon Intl
Keep the following information in mind while searching for Illinois to Incheon Intl flight deals. Data was last updated April 30, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $1,160 (United Airlines) |
One-way from | $424 (WhyPayMore) |
Popular in | December |
Cheapest in | January |
Average price | $1,331 |
Good round-trip deal | $879 or less |
Good one-way deal | $531 or less |
Find flight deals from Illinois to Incheon Intl
Cheapest flights from Illinois to Incheon IntlExplore the most affordable flight options available from Illinois to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.
Explore the most affordable flight options available from Illinois to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 11/107:05 amSTL - ICN
1 stop31h 35mUnited Airlines
Thu 11/2712:45 pmICN - STL
1 stop19h 18mUnited Airlines
Deal found 4/29![United Airlines logo]()
$993
This Delta deal was found by Cheapflights users on 4/29. 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.
Mon 11/105:45 pmSTL - ICN
2 stops30h 45mDelta
Thu 11/279:35 amICN - STL
2 stops23h 27mDelta
Deal found 4/29![Delta logo]()
$1,060
This Hawaiian Airlines deal was found by Cheapflights users on 4/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/163:17 pmSTL - ICN
1 stop37h 18mHawaiian Airlines
Fri 9/198:35 pmICN - STL
1 stop17h 24mHawaiian Airlines
Deal found 4/28![Hawaiian Airlines logo]()
$1,083
This Gurufare deal was found by Cheapflights users on 4/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/24:00 pmORD - ICN
1 stop30h 40mCathay Pacific
Fri 5/98:05 pmICN - ORD
1 stop32h 20mCathay Pacific
Deal found 4/28![Cathay Pacific logo]()
$1,146
This Ovago deal was found by Cheapflights users on 4/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1212:30 amORD - ICN
1 stop20h 30mEVA Air
Sun 9/2812:00 pmICN - ORD
1 stop22h 45mEVA Air
Deal found 4/28![EVA Air logo]()
$1,158
This Turkish Airlines deal was found by Cheapflights users on 4/28. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/197:50 pmORD - ICN
1 stop31h 50mTurkish Airlines
Wed 10/811:20 pmICN - ORD
1 stop24h 20mTurkish Airlines
Deal found 4/28![Turkish Airlines logo]()
$1,160
This Trip.com deal was found by Cheapflights users on 4/28. 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.
Mon 4/2812:30 amORD - ICN
1 stop20h 30mMultiple Airlines
Fri 5/3010:05 pmICN - ORD
2 stops27h 45mMultiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$1,161
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/142:55 pmSTL - ICN
1 stop37h 40mAlaska Airlines
Fri 10/178:35 pmICN - STL
1 stop17h 21mAlaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$1,161
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/164:05 pmSTL - ICN
2 stops34h 00mAir Canada
Fri 9/196:00 pmICN - STL
1 stop39h 57mAir Canada
Deal found 4/28![Air Canada logo]()
$1,178
This Air Canada deal was found by Cheapflights users on 4/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/98:08 pmORD - ICN
2 stops29h 57mAir Canada
Wed 9/247:05 pmICN - ORD
2 stops26h 56mAir Canada
Deal found 4/29![Air Canada logo]()
$1,258
This EVA Air deal was found by Cheapflights users on 4/28. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/16:30 pmSTL - ICN
2 stops26h 30mMultiple Airlines
Tue 9/307:45 pmICN - STL
2 stops32h 54mMultiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$1,259
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/285:06 pmORD - ICN
2 stops28h 14mFinnair
Sun 9/79:50 pmICN - ORD
2 stops45h 28mFinnair
Deal found 4/29![Finnair logo]()
$1,273
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Incheon Intl 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 30, 2025.
Use the filters below to find and compare flights from Illinois to Incheon Intl Airport that are best for you.
Fly from
Illinois
Fly to
Incheon Intl
Route
Depart
Return
Price
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Fri 9/12
12:30 am-11:00 am
1 stop20h 30m
Incheon Intl
Sun 9/28
12:00 pm-8:45 pm
1 stop22h 45m
$1,158
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Fri 9/19
7:50 pm-5:40 pm
1 stop31h 50m
Incheon Intl
Wed 10/8
11:20 pm-9:40 am
1 stop24h 20m
$1,160
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 7/7
6:00 am-3:00 pm
1 stop19h 00m
Incheon Intl
Wed 7/16
4:50 pm-4:54 am
1 stop26h 04m
$1,160
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Mon 7/7
4:00 pm-12:40 pm
1 stop30h 40m
Incheon Intl
Thu 7/17
8:05 pm-2:25 pm
1 stop32h 20m
$1,162
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Sun 5/25
7:59 pm-5:05 pm
2 stops55h 06m
Incheon Intl
Mon 6/2
10:05 pm-6:42 am
1 stop22h 37m
$1,166
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Tue 9/9
8:08 pm-4:05 pm
2 stops29h 57m
Incheon Intl
Wed 9/24
7:05 pm-8:01 am
2 stops26h 56m
$1,258
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Thu 8/28
5:06 pm-11:20 am
2 stops28h 14m
Incheon Intl
Sun 9/7
9:50 pm-5:18 am
2 stops45h 28m
$1,273
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Wed 9/17
1:35 pm-3:35 pm
3 stops36h 00m
Incheon Intl
Tue 9/23
4:45 pm-8:54 pm
3 stops42h 09m
$1,355
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Sat 6/21
1:40 pm-6:45 pm
2 stops39h 05m
Incheon Intl
Sun 6/29
8:45 pm-4:44 pm
1 stop33h 59m
$1,374
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sat 7/5
5:00 pm-3:20 pm
1 stop32h 20m
Incheon Intl
Wed 7/9
10:15 am-5:08 pm
1 stop20h 53m
$1,410
Showing 1-10 of 54 results
Best time to book a flight from Illinois to Incheon Intl
Have a flexible travel schedule? Discover the best time to fly to Incheon Intl from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Illinois to Incheon Intl Airport
What is the cheapest month to book a flight from Illinois to Incheon Intl Airport?
Currently, February is the cheapest month in which you can book a flight from Illinois to Incheon Intl Airport (average of $1,001). Flying from Illinois to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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 IL to ICN?
Find hourly flight availability from Illinois to Incheon Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Incheon Intl Airport as you normally would.
Weekly flight availability from Illinois to Incheon Intl Airport
Explore weekly flight availability from Illinois to Incheon Intl. 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 30, 2025.
The most flights from USIL to ICN are scheduled on a Monday (2 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).
Rainfall in Incheon Intl by month
Plan your trip to Incheon Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Incheon Intl Airport ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Incheon Intl Airport when rainfall is around 0.8 in.
Temperature in Incheon Intl by month
Plan your trip to Incheon Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Incheon Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).
Reviews of airlines servicing Incheon Intl
Get insights into the airlines that provide service to Incheon Intl. 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 Incheon Intl. Reviews last updated April 30, 2025.
To help decide which airline to fly from Illinois to Seoul, see what other customers have to say about EVA Air, Korean Air and China Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
8.0
Boarding
8.4
Overall
8.4
Crew
8.6
Food
8.1
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Entertainment
8.0
Boarding
8.4
Overall
8.4
Crew
8.6
Food
8.1
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Entertainment
8.0
Boarding
8.4
Overall
8.4
Crew
8.6
Food
8.1
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Entertainment
8.0
Boarding
8.4
Overall
8.4
Crew
8.6
Food
8.1
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Entertainment
8.0
Boarding
8.4
Overall
8.4
Crew
8.6
Food
8.1
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Entertainment
8.0
Boarding
8.4
Overall
8.4
Crew
8.6
Food
8.1
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Related info for your journey
Find useful and relevant information for your journey from Illinois to Incheon Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Illinois?
Book flights to Illinois if you plan to visit one of these locationsSuwon
Seongnam
Daejeon
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Alternative routes for Illinois to Incheon Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top 10 airlines flying from Illinois to Incheon Intl
Discover the top 10 airlines that operate flights from Illinois to Incheon Intl. 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 30, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$660 | Average$1,020 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$805 | Average$940 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$848 | Average$1,068 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$891 | Average$1,318 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$895 | Average$1,049 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,059 | Average$1,250 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,110 | Average$1,503 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$1,156 | Average$1,850 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,271 | Average$1,595 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$1,519 | Average$1,818 | FlexibilityNo cancel fee | On-time81% |