$351 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 5/12. 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

Mon, May 11 - Tue, Jun 23
Air Canada Logo
1:00 pm - 4:05 pm
STL
-
ICN
37h 05m
2 stops
Air Canada Logo
6:00 pm - 8:25 pm
ICN
-
STL
40h 25m
1 stop
$900Air Canada
Mon, May 11 - Tue, Jun 23
Air Canada Logo
1:00 pm - 4:05 pm
STL
-
ICN
37h 05m
2 stops
Air Canada Logo
6:00 pm - 12:21 pm
ICN
-
STL
32h 21m
2 stops
$908Air Canada
Wed, Apr 15 - Wed, Apr 29
Asiana Airlines Logo
4:05 pm - 5:30 pm
STL
-
ICN
35h 25m
1 stop
Asiana Airlines Logo
7:05 pm - 3:25 pm
ICN
-
STL
34h 20m
1 stop
$922Asiana Airlines
Sun, Apr 26 - Mon, May 11
Asiana Airlines Logo
4:05 pm - 5:30 pm
STL
-
ICN
35h 25m
1 stop
Asiana Airlines Logo
5:45 pm - 8:25 pm
ICN
-
STL
40h 40m
2 stops
$931Asiana Airlines
Mon, Apr 6 - Tue, Apr 21
Multiple Airlines Logo
6:01 pm - 5:15 am
ORD
-
ICN
21h 14m
1 stop
Multiple Airlines Logo
1:00 pm - 5:50 am
ICN
-
ORD
30h 50m
1 stop
$939Multiple Airlines
Sun, Apr 19 - Sun, Apr 26
Multiple Airlines Logo
5:15 am - 3:50 pm
ORD
-
ICN
20h 35m
1 stop
Multiple Airlines Logo
1:30 pm - 6:20 am
ICN
-
ORD
30h 50m
2 stops
$942Multiple Airlines
Sat, Apr 25 - Sat, May 23
Turkish Airlines Logo
8:10 pm - 5:40 pm
ORD
-
ICN
31h 30m
1 stop
Turkish Airlines Logo
10:15 am - 9:40 am
ICN
-
ORD
37h 25m
1 stop
$943Turkish Airlines
Sun, Aug 23 - Thu, Sep 3
Turkish Airlines Logo
11:25 am - 5:40 pm
ORD
-
ICN
40h 15m
1 stop
Turkish Airlines Logo
11:20 pm - 9:40 am
ICN
-
ORD
24h 20m
1 stop
$948Turkish Airlines
Mon, Apr 27 - Tue, May 12
EVA Air Logo
12:30 am - 7:15 pm
ORD
-
GMP
28h 45m
1 stop
EVA Air Logo
7:15 pm - 9:00 pm
GMP
-
ORD
39h 45m
1 stop
$1,087EVA Air
Mon, Apr 27 - Tue, May 12
EVA Air Logo
12:30 am - 7:15 pm
ORD
-
GMP
28h 45m
1 stop
EVA Air Logo
7:15 pm - 9:00 pm
GMP
-
ORD
39h 45m
1 stop
$1,088EVA Air
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$351
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 31% increase in price.
Flight from Chicago Midway Airport to Incheon

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