$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 5/16. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Seoul

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

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

Tue, Apr 14 - Sat, May 9
Multiple Airlines Logo
6:01 pm - 5:15 am
ORD
-
ICN
21h 14m
1 stop
Multiple Airlines Logo
9:10 pm - 4:40 pm
ICN
-
ORD
33h 30m
2 stops
$747Multiple Airlines
Sat, Apr 18 - Mon, May 11
Multiple Airlines Logo
5:09 pm - 5:15 am
ORD
-
ICN
22h 06m
1 stop
Multiple Airlines Logo
6:00 pm - 6:47 am
ICN
-
ORD
26h 47m
2 stops
$752Multiple Airlines
Sat, Apr 18 - Tue, May 12
Multiple Airlines Logo
5:09 pm - 5:15 am
ORD
-
ICN
22h 06m
1 stop
Multiple Airlines Logo
9:10 pm - 6:54 pm
ICN
-
ORD
35h 44m
2 stops
$754Multiple Airlines
Wed, Apr 8 - Wed, Apr 15
Air Canada Logo
4:05 pm - 4:05 pm
STL
-
ICN
34h 00m
2 stops
Air Canada Logo
7:05 pm - 3:24 pm
ICN
-
STL
34h 19m
1 stop
$871Air Canada
Wed, Apr 15 - Thu, Apr 23
Air Canada Logo
4:05 pm - 4:05 pm
STL
-
ICN
34h 00m
2 stops
Air Canada Logo
7:05 pm - 3:24 pm
ICN
-
STL
34h 19m
1 stop
$872Air Canada
Mon, Apr 6 - Mon, Apr 27
Asiana Airlines Logo
4:05 pm - 5:30 pm
STL
-
ICN
35h 25m
1 stop
Asiana Airlines Logo
7:05 pm - 3:24 pm
ICN
-
STL
34h 19m
1 stop
$884Asiana Airlines
Mon, Apr 6 - Mon, Apr 27
Asiana Airlines Logo
4:05 pm - 5:30 pm
STL
-
ICN
35h 25m
1 stop
Asiana Airlines Logo
5:45 pm - 3:24 pm
ICN
-
STL
35h 39m
2 stops
$907Asiana Airlines
Fri, Apr 10 - Fri, Apr 17
Delta Logo
6:32 am - 4:25 pm
STL
-
ICN
19h 53m
1 stop
Delta Logo
7:20 pm - 12:25 am
ICN
-
STL
19h 05m
1 stop
$917Delta
Mon, Apr 6 - Mon, Apr 27
United Airlines Logo
8:15 pm - 3:00 pm
STL
-
ICN
28h 45m
2 stops
United Airlines Logo
4:50 pm - 8:25 am
ICN
-
STL
29h 35m
2 stops
$921United Airlines
Wed, Apr 8 - Wed, Apr 15
United Airlines Logo
3:20 pm - 4:20 am
MLI
-
ICN
23h 00m
2 stops
United Airlines Logo
11:30 am - 9:32 pm
ICN
-
MLI
24h 02m
2 stops
$1,601United Airlines
Useful Info

Good to know

Low seasonDecember
Cheapest flight$351
Best time to beat the crowds but there is an average 37% increase in price.
Most popular time to fly with an average 28% 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 $796