$327 Find Cheap Flights from Illinois to Seoul

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Seoul departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$731
Overall average: $1,501
Multiple Airlines
Mon 3/2Mon 4/27
ORD - ICN • 1 stop
Cheapest non-stop
$1,627
Typical prices: $1,612-$1,883
Korean Air
Tue 4/7Wed 4/22
ORD - ICN • Non-stop
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We hope you love your trip to Seoul!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Illinois to Seoul

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Seoul that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Seoul

Mon, Mar 2 - Mon, Apr 27
Multiple Airlines Logo
6:51 pm - 5:40 am
ORD
-
ICN
19h 49m
1 stop
Multiple Airlines Logo
6:00 pm - 6:47 am
ICN
-
ORD
26h 47m
2 stops
$731Multiple Airlines
Wed, Mar 4 - Mon, Mar 9
Multiple Airlines Logo
7:00 am - 6:35 pm
STL
-
ICN
20h 35m
1 stop
Multiple Airlines Logo
8:35 pm - 1:51 pm
ICN
-
STL
31h 16m
1 stop
$739Multiple Airlines
Tue, Mar 3 - Wed, May 6
Multiple Airlines Logo
6:51 pm - 5:40 am
ORD
-
ICN
19h 49m
1 stop
Multiple Airlines Logo
6:20 pm - 5:31 am
ICN
-
ORD
25h 11m
2 stops
$754Multiple Airlines
Mon, Apr 13 - Thu, Apr 23
American Airlines Logo
7:12 am - 3:45 pm
STL
-
ICN
18h 33m
1 stop
American Airlines Logo
5:50 pm - 10:59 pm
ICN
-
STL
19h 09m
1 stop
$817American Airlines
Mon, Mar 2 - Tue, Mar 10
Turkish Airlines Logo
8:20 pm - 6:20 pm
ORD
-
ICN
31h 00m
1 stop
Turkish Airlines Logo
12:10 am - 11:05 am
ICN
-
ORD
24h 55m
1 stop
$818Turkish Airlines
Wed, Apr 15 - Wed, Apr 22
Delta Logo
6:50 pm - 4:00 am
STL
-
ICN
19h 10m
1 stop
Delta Logo
7:40 pm - 11:13 pm
ICN
-
STL
17h 33m
1 stop
$867Delta
Wed, Apr 15 - Wed, Apr 22
Delta Logo
6:19 am - 4:50 pm
STL
-
ICN
20h 31m
2 stops
Delta Logo
7:20 pm - 12:25 am
ICN
-
STL
19h 05m
1 stop
$871Delta
Mon, Mar 9 - Mon, Mar 16
American Airlines Logo
7:00 am - 3:55 pm
STL
-
ICN
18h 55m
1 stop
American Airlines Logo
5:55 pm - 10:59 am
ICN
-
STL
31h 04m
1 stop
$873American Airlines
Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
11:15 am - 4:20 am
STL
-
ICN
27h 05m
2 stops
United Airlines Logo
11:30 am - 10:28 pm
ICN
-
STL
24h 58m
2 stops
$897United Airlines
Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
8:30 am - 4:20 am
STL
-
ICN
29h 50m
1 stop
United Airlines Logo
11:30 am - 10:28 pm
ICN
-
STL
24h 58m
2 stops
$905United Airlines
Useful Info

Good to know

Low seasonDecember
Cheapest flight$327
Best time to beat the crowds but there is an average 36% increase in price.
Most popular time to fly with an average 27% increase in price.
Flight from Chicago O'Hare Airport to Seoul Incheon Airport

FAQs for booking flights from Illinois to Seoul

  • How does KAYAK find such low prices on flights from Illinois to Seoul?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Seoul.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Seoul?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Seoul?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seoul with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Seoul?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seoul from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Seoul

Cabin class types available on flights to Illinois

Cabin classes available on flights to Seoul. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to Seoulfrom $26,570
Business Class flights to Seoulfrom $4,268
Premium Economy Class flights to Seoulfrom $5,635
Economy Class flights to Seoulfrom $723