$468 Cheap Flights from Champaign (CMI) to Seoul (ICN)

View $468 flight on Tue, Nov 18, 2025Opens in a new window

Popular airlines from Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard) to Incheon Intl. Airport (ICN)

Cheap Flights from Champaign to Seoul (CMI-ICN)

Prices were available within the past 7 days and start at $468 for one-way flights and $916 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Nov 18 - Tue, Nov 25
CMI
Champaign
ICN
Seoul
$916 Roundtrip, found 1 day ago
$916
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Nov 18 from Champaign to Seoul, returning Tue, Nov 25, priced at $916 found 1 day ago
American Airlines
Mon, Dec 8 - Tue, Dec 23
CMI
Champaign
ICN
Seoul
$917 Roundtrip, found 4 days ago
$917
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Dec 8 from Champaign to Seoul, returning Tue, Dec 23, priced at $917 found 4 days ago
American Airlines
Fri, Jan 23 - Sun, Feb 8
CMI
Champaign
ICN
Seoul
$918 Roundtrip, found 5 days ago
$918
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Jan 23 from Champaign to Seoul, returning Sun, Feb 8, priced at $918 found 5 days ago
American Airlines
Tue, Nov 18 - Wed, Nov 26
CMI
Champaign
ICN
Seoul
$921 Roundtrip, found 2 days ago
$921
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Nov 18 from Champaign to Seoul, returning Wed, Nov 26, priced at $921 found 2 days ago
American Airlines
Tue, Nov 18 - Sat, Nov 22
CMI
Champaign
ICN
Seoul
$927 Roundtrip, found 2 days ago
$927
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Nov 18 from Champaign to Seoul, returning Sat, Nov 22, priced at $927 found 2 days ago
American Airlines
Tue, Nov 18 - Mon, Nov 24
CMI
Champaign
ICN
Seoul
$966 Roundtrip, found 2 days ago
$966
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Nov 18 from Champaign to Seoul, returning Mon, Nov 24, priced at $966 found 2 days ago
American Airlines
Mon, Dec 8 - Fri, Dec 19
CMI
Champaign
ICN
Seoul
$967 Roundtrip, found 4 days ago
$967
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Dec 8 from Champaign to Seoul, returning Fri, Dec 19, priced at $967 found 4 days ago
American Airlines
Mon, Dec 8 - Tue, Dec 23
CMI
Champaign
ICN
Seoul
$968 Roundtrip, found 4 days ago
$968
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Dec 8 from Champaign to Seoul, returning Tue, Dec 23, priced at $968 found 4 days ago
American Airlines
Mon, Dec 8 - Tue, Dec 9
CMI
Champaign
ICN
Seoul
$1,016 Roundtrip, found 4 days ago
$1,016
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Dec 8 from Champaign to Seoul, returning Tue, Dec 9, priced at $1,016 found 4 days ago
Qatar Airways
Tue, Nov 18 - Fri, Dec 5
CMI
Champaign
ICN
Seoul
$2,152 Roundtrip, found 3 days ago
$2,152
Roundtrip
found 3 days ago
Select Qatar Airways flight, departing Tue, Nov 18 from Champaign to Seoul, returning Fri, Dec 5, priced at $2,152 found 3 days ago

Alternative airports near Seoul

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Incheon Intl. ICN. Cheapest option available. Average driving time to city center is 47 minutes. Flights from $1,671
ICN
Incheon Intl.
Cheapest
Average driving time to city center47 min
Flights from $1,671

Frequently asked questions

How much does a flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Incheon Intl. Airport (ICN) cost?
Get a cheap one-way flight from $468 or cheap return flight from $916 from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Incheon Intl. Airport (ICN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Incheon Intl. Airport (ICN)?
November is the least expensive month to fly from CMI to ICN. Timing your trip outside of the busy season is often the key to landing a great deal.
What is the cheapest airline that flies from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Incheon Intl. Airport (ICN)?
To find the cheapest airline flying from CMI to ICN, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Incheon Intl. Airport (ICN)?
There aren't any daily direct flights departing from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Incheon Intl. Airport (ICN). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from CMI to ICN?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Incheon Intl. Airport (ICN)?
To arrive at Incheon Intl. Airport (ICN) on time, choose a flight that leaves University Of Illinois Urbana-Champaign Williard Airport (CMI) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Incheon Intl. Airport (ICN) last-minute?
Waiting until just before your departure to book a ticket from CMI to ICN generally means paying more. While you might find some last-minute deals, there's no guarantee. Keep your travel schedule open for a better chance of scoring a bargain.
Is it cheaper to book a CMI to ICN flight and hotel package?
You can save money by booking a CMI to ICN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your ideal flights and accommodations, consider adding extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Incheon Intl. Airport (ICN)?
If you booked your CMI to ICN flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

Travel information

Origin airport
University Of Illinois Urbana-Champaign Williard
Destination airport
Incheon Intl.
Airlines serving
American Airlines, Qatar Airways
Roundtrip price
$916
Distance
6647 mi

Book with confidence

Champaign to Seoul Flights

The cheapest times to fly from Champaign to Seoul

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Champaign to Seoul are during the month of November. You can find some of the cheapest flights from Champaign to Seoul with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Champaign to Seoul

Sunday is one of the best days to book for cheap flights from Champaign to Seoul: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Champaign to Seoul

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Champaign to Seoul in 2025. You can also book with separate airlines for your outbound and return journeys, from $468 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Champaign to Seoul flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Champaign to Seoul airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Champaign to Seoul Flights

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*Available to One Key members.