Cheap flights from Illinois to Incheon Intl Airport from $423
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Incheon Intl Airport departing on 8/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap round-trip flights
KAYAK's recommended round-trip deals from the most popular airlines that fly from Illinois to Seoul.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from Illinois to Seoul.
Cheap last minute flights
Planning a quick getaway from Illinois to Seoul? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to Seoul, so you can enjoy a seamless trip without layovers.
Cathay Pacific flights from Illinois to Incheon Intl Airport
Our best Cathay Pacific deals on Illinois to Incheon Intl Airport flight tickets
Cathay Pacific![Cathay Pacific]()
May 5![Cathay Pacific]()
May 19
ORD4:00 pmChicago O'Hare Intl
30h 40m
1 stop
ICN12:40 pmIncheon Intl
ICN3:10 pmIncheon Intl
37h 15m
1 stop
ORD2:25 pmChicago O'Hare Intl
Cathay Pacific![Cathay Pacific]()
May 6![Cathay Pacific]()
May 25
ORD4:00 pmChicago O'Hare Intl
37h 05m
1 stop
ICN7:05 pmIncheon Intl
ICN10:10 amIncheon Intl
42h 15m
1 stop
ORD2:25 pmChicago O'Hare Intl
Turkish Airlines flights from Illinois to Incheon Intl Airport
Our best Turkish Airlines deals on Illinois to Incheon Intl Airport flight tickets
Turkish Airlines![Turkish Airlines]()
Oct 1![Turkish Airlines]()
Oct 10
ORD11:45 pmChicago O'Hare Intl
42h 55m
1 stop
ICN8:40 amIncheon Intl
ICN10:20 amIncheon Intl
37h 20m
1 stop
ORD9:40 amChicago O'Hare Intl
Turkish Airlines![Turkish Airlines]()
Aug 19![Turkish Airlines]()
Oct 27
ORD7:50 pmChicago O'Hare Intl
31h 50m
1 stop
ICN5:40 pmIncheon Intl
ICN12:10 amIncheon Intl
25h 00m
1 stop
ORD11:10 amChicago O'Hare Intl
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How to get the cheapest flight ticket from Illinois to Incheon Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
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Other information
What is the cheapest month to fly to Incheon Intl Airport?
The cheapest month to fly to Incheon Intl Airport from Illinois is in January. Flight prices, which tend to average around $1,267, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of January, then departing from Illinois during the month February is also very affordable. Most momondo users find prices during this month for around $1,330.
What is the cheapest day to depart on your flight to Incheon Intl Airport?
The cheapest day to depart from Illinois to Incheon Intl Airport is on a Tuesday when prices can be found for as low as $1,088. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,409. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.
What is the cheapest time of day to depart on your flight to Incheon Intl Airport?
At noon is the cheapest time of day to fly from Illinois to Incheon Intl Airport when you can find flight prices for as low as $920. Flying to Incheon Intl Airport at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,466 on average. Flights to Incheon Intl Airport from Illinois in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Illinois to Incheon Intl flight route?
Fly from Chicago O'Hare Intl to Incheon Intl for the best Illinois - Incheon Intl flight prices
How far in advance should I book a flight to Incheon Intl Airport?
You are more likely to see cheaper flights to Incheon Intl Airport from Illinois when booking 21 weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,539 when searching 21 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from Illinois for as low as $1,364 on momondo.
What cabin class options are available on Illinois to Incheon Intl flights?
There are 3 cabin classes available to choose from on Illinois to Incheon Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Illinois to Incheon Intl?
Cathay Pacific, WestJet, and United Airlines are the most popular carriers operating from Illinois to Incheon Intl
What airlines fly to Incheon Intl Airport?
Korean Air, Air Canada and Turkish Airlines are the top three most popular airlines that fly to Incheon Intl Airport from Illinois according to our data. Korean Air is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Incheon Intl Airport. Keep in mind that there are 10 different airlines that fly to Incheon Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Illinois to Incheon Intl Airport on average per day?
As of April 2025, 2 flights take off from Illinois and land in Incheon Intl Airport each day. The most common flight departure time for this route is 12:00PM, with 100% of daily flights taking off in the afternoon.
How many flights depart from Illinois to Incheon Intl Airport on average per week?
As of April 2025, 14 flights take off from Illinois and land in Incheon Intl Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.
Cheap Illinois to Incheon Intl Airport flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Incheon Intl Airport
When did momondo last update prices for flights from Illinois to Incheon Intl Airport?
Prices for flights from Illinois to Incheon Intl Airport were last updated today.
How many operators does momondo search for flights from Illinois to Incheon Intl Airport?
As of April 2025, there are 10 operators available to choose from for flights from Illinois to Incheon Intl Airport.
How old do you have to be to fly from Illinois to Incheon Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Incheon Intl Airport.
What documentation or ID do you need to fly to Incheon Intl Airport?
The travel and health documents required for your trip to Incheon Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Incheon Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Illinois to Incheon Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Incheon Intl Airport is Boeing 777-300ER, representing 90.46% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 2.65%, Airbus A350-900 at 1.70%, and Airbus A380-800 at 1.27%.
Best airlines flying from Illinois to Incheon Intl Airport
Compare and see reviews for airlines that fly from Illinois to Incheon Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $660 | Free Cancellation | Rating 7.4 8,684 reviews | |||
| PriceFrom $848 | Free Cancellation | Rating 7.3 3,773 reviews | |||
| PriceFrom $873 | Free Cancellation | Rating 7.5 850 reviews | |||
| PriceFrom $891 | Free Cancellation | Rating 7.0 9,179 reviews | |||
| PriceFrom $895 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $1,059 | Free Cancellation | Rating 8.4 1,179 reviews | |||
| PriceFrom $1,110 | Free Cancellation | Rating 7.6 1,272 reviews | |||
| PriceFrom $1,156 | Free Cancellation | Rating 8.0 7,920 reviews | |||
| PriceFrom $1,271 | Free Cancellation | Rating 8.1 442 reviews | |||
| PriceFrom $1,524 | Free Cancellation | Rating 8.4 1,063 reviews |
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Why use momondo?
Why should I use momondo to find a flight deal from Illinois to Seoul?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Seoul for you.
Can I find flights from Illinois to Seoul with flexible booking policies on momondo?
Yes. All flights to Seoul from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Illinois to Seoul?
Once all potential Illinois to Seoul flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Illinois to Seoul right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Illinois to Seoul now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seoul and let you know when they change.
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