$458+ Cheap flights from Illinois to Seoul (SEL)
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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Illinois to Seoul 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 Illinois to Seoul
Keep the following information in mind while searching for Illinois to Seoul flight deals. Data was last updated February 20, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $882 (United Airlines) |
One-way from | $458 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $1,469 |
Good round-trip deal | $1,044 or less |
Good one-way deal | $532 or less |
Find flight deals from Illinois to Seoul
Cheapest flights from Illinois to SeoulExplore the most affordable flight options available from Illinois to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.
Explore the most affordable flight options available from Illinois to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.
This United Airlines deal was found by Cheapflights users on 2/18. 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 2/18. 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 Turkish Airlines deal was found by Cheapflights users on 2/20. 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.
This Cathay Pacific deal was found by Cheapflights users on 2/19. 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 Cathay Pacific 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 2/20. 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 Korean Air deal was found by Cheapflights users on 2/18. 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 oojo deal was found by Cheapflights users on 2/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Flightnetwork deal was found by Cheapflights users on 2/18. 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 Flightnetwork 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 2/18. 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 2/19. 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 Air Canada deal was found by Cheapflights users on 2/20. 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.
This Booking.com deal was found by Cheapflights users on 2/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flights from Illinois to Seoul within your budget
Customize your flight search to find flights from Illinois to Seoul 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 February 20, 2025.
Fly from
Fly to
Route
Depart
Return
Price
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 3/20
7:00 am-3:15 pm
1 stop18h 15m
Incheon Intl
Thu 3/27
5:00 pm-9:51 am
2 stops30h 51m
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 3/20
6:00 am-3:30 pm
1 stop19h 30m
Incheon Intl
Thu 3/27
7:25 pm-9:14 am
1 stop27h 49m
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Wed 4/2
4:00 pm-9:10 pm
1 stop39h 10m
Incheon Intl
Tue 4/8
1:40 pm-2:25 pm
1 stop38h 45m
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Sat 4/5
7:16 pm-7:50 pm
1 stop34h 34m
Incheon Intl
Sun 4/13
1:30 pm-5:45 am
2 stops30h 15m
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Wed 3/19
12:55 pm-6:20 pm
1 stop39h 25m
Incheon Intl
Wed 3/26
10:45 am-11:10 am
1 stop38h 25m
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 4/30
6:50 am-4:25 pm
1 stop19h 35m
Incheon Intl
Thu 5/8
6:40 pm-9:33 pm
1 stop16h 53m
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Mon 4/21
12:30 am-11:00 am
1 stop20h 30m
Incheon Intl
Mon 5/5
12:00 pm-9:00 pm
1 stop23h 00m
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Mon 4/7
5:00 am-3:30 pm
1 stop20h 30m
Incheon Intl
Wed 4/23
5:25 pm-11:49 pm
2 stops20h 24m
ChicagoIncheon
ORD - ICN
ORDICN
Chicago O'Hare Intl
Sun 6/1
5:30 pm-6:45 pm
1 stop35h 15m
Incheon Intl
Sat 6/14
8:45 pm-4:44 pm
1 stop33h 59m
ChicagoSeoul
ORD - GMP
ORDGMP
Chicago O'Hare Intl
Fri 3/7
4:45 pm-1:05 pm
2 stops29h 20m
Seoul Gimpo Intl
Sat 3/15
2:25 pm-7:44 am
2 stops31h 19m
Best time to book a flight from Illinois to Seoul
Have a flexible travel schedule? Discover the best time to fly to Seoul from Illinois with our price prediction graph.
Travel insights for flights from Illinois to Seoul
Get recent, data-driven insights about flights from Illinois to Seoul including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from Illinois to Seoul?
Currently, February is the cheapest month in which you can book a flight from Illinois to Seoul (average of $1,036). Flying from Illinois to Seoul in June is currently the most expensive (average of $1,697). 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 SEL?
Find hourly flight availability from Illinois to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Seoul as you normally would.
Weekly flight availability from Illinois to Seoul
Explore weekly flight availability from Illinois to Seoul. 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 February 20, 2025.
The most flights from USIL to SEL 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 Seoul by month
Plan your trip to Seoul by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.
Temperature in Seoul by month
Plan your trip to Seoul by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Seoul, 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 35.6 F).
Reviews of airlines servicing Seoul
Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated February 20, 2025.
Read through reviews of airlines operating flights from Illinois to Seoul, such as EVA Air, ANA and Korean Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Piotr,Feb 2025
TPE - ORD
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Piotr,Feb 2025
TPE - ORD
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Piotr,Feb 2025
TPE - ORD
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Piotr,Feb 2025
TPE - ORD
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Piotr,Feb 2025
TPE - ORD
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Piotr,Feb 2025
TPE - ORD
Related info for your journey
Find useful and relevant information for your journey from Illinois to Seoul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Illinois to Seoul
See prices for flight routes from nearby airports that may be better suited for you.
Top 10 airlines flying from Illinois to Seoul
Discover the top 10 airlines that operate flights from Illinois to Seoul. 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 February 20, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$848 | Average$1,057 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$873 | Average$1,119 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$891 | Average$1,327 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$895 | Average$1,248 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$906 | Average$1,231 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,064 | Average$1,291 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,110 | Average$1,500 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$1,272 | Average$1,728 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$1,538 | Average$1,817 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,591 | Average$1,822 | FlexibilityNo cancel fee | On-timeN/A |