$417 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 4/26. 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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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

Sun, Aug 30 - Mon, Oct 26
Turkish Airlines Logo
8:10 pm - 5:40 pm
ORD
-
ICN
31h 30m
1 stop
Turkish Airlines Logo
10:45 am - 11:05 am
ICN
-
ORD
38h 20m
1 stop
$947Turkish Airlines
Mon, Apr 20 - Tue, May 5
Multiple Airlines Logo
5:15 am - 3:50 pm
ORD
-
ICN
20h 35m
1 stop
Multiple Airlines Logo
1:00 pm - 10:04 pm
ICN
-
ORD
23h 04m
1 stop
$951Multiple Airlines
Mon, Apr 6 - Tue, May 12
Air Canada Logo
4:05 pm - 5:30 pm
STL
-
ICN
35h 25m
1 stop
Air Canada Logo
5:45 pm - 12:06 pm
ICN
-
STL
32h 21m
2 stops
$998Air Canada
Mon, Aug 17 - Wed, Oct 14
EVA Air Logo
12:30 am - 7:15 pm
ORD
-
GMP
28h 45m
1 stop
EVA Air Logo
8:20 pm - 8:45 pm
GMP
-
ORD
38h 25m
1 stop
$1,005EVA Air
Sun, Sep 13 - Tue, Sep 29
EVA Air Logo
12:30 am - 6:10 pm
ORD
-
GMP
27h 40m
1 stop
EVA Air Logo
7:15 pm - 8:45 pm
GMP
-
ORD
39h 30m
1 stop
$1,012EVA Air
Mon, Apr 6 - Tue, May 12
Air Canada Logo
4:05 pm - 5:30 pm
STL
-
ICN
35h 25m
1 stop
Air Canada Logo
7:05 pm - 12:06 pm
ICN
-
STL
31h 01m
1 stop
$1,035Air Canada
Sat, Apr 4 - Fri, Apr 17
United Airlines Logo
9:16 am - 4:20 am
STL
-
ICN
29h 04m
2 stops
United Airlines Logo
4:50 pm - 10:45 am
ICN
-
STL
31h 55m
2 stops
$1,063United Airlines
Wed, Apr 15 - Wed, Apr 22
Delta Logo
6:48 am - 4:25 pm
STL
-
ICN
19h 37m
1 stop
Delta Logo
7:20 pm - 12:25 am
ICN
-
STL
19h 05m
1 stop
$1,066Delta
Wed, Apr 15 - Wed, Apr 22
Delta Logo
7:00 am - 4:50 pm
STL
-
ICN
19h 50m
2 stops
Delta Logo
7:20 pm - 12:25 am
ICN
-
STL
19h 05m
1 stop
$1,071Delta
Sat, Aug 29 - Tue, Sep 8
United Airlines Logo
3:44 pm - 4:20 am
MLI
-
ICN
22h 36m
2 stops
United Airlines Logo
11:30 am - 6:01 pm
ICN
-
MLI
20h 31m
2 stops
$1,177United Airlines
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$417
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 26% 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 $701