$401 Find Cheap Flights from Illinois to Seoul - Compare and Save

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 8/19. 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

Fri, Oct 23 - Sun, Oct 25
WestJet Logo
5:30 pm - 6:45 pm
ORD
-
ICN
35h 15m
1 stop
WestJet Logo
8:45 pm - 1:35 pm
ICN
-
ORD
30h 50m
1 stop
$915WestJet
Fri, Oct 23 - Sun, Oct 25
WestJet Logo
5:30 pm - 6:45 pm
ORD
-
ICN
35h 15m
1 stop
WestJet Logo
8:45 pm - 1:35 pm
ICN
-
ORD
30h 50m
1 stop
$919WestJet
Thu, Oct 15 - Sun, Oct 25
WestJet Logo
5:30 pm - 6:45 pm
ORD
-
ICN
35h 15m
1 stop
WestJet Logo
8:45 pm - 1:35 pm
ICN
-
ORD
30h 50m
1 stop
$936WestJet
Sun, Oct 18 - Tue, Nov 17
Multiple Airlines Logo
5:30 pm - 6:45 pm
ORD
-
ICN
35h 15m
1 stop
Multiple Airlines Logo
8:30 pm - 4:55 pm
ICN
-
ORD
35h 25m
1 stop
$948Multiple Airlines
Fri, Oct 30 - Tue, Nov 24
Multiple Airlines Logo
2:20 pm - 6:45 pm
ORD
-
ICN
38h 25m
1 stop
Multiple Airlines Logo
8:30 pm - 4:55 pm
ICN
-
ORD
35h 25m
1 stop
$963Multiple Airlines
Mon, Oct 26 - Wed, Nov 25
Delta Logo
6:00 am - 3:30 pm
STL
-
ICN
19h 30m
1 stop
Delta Logo
6:00 pm - 8:49 pm
ICN
-
STL
17h 49m
1 stop
$1,106Delta
Mon, Oct 26 - Wed, Nov 25
Delta Logo
6:00 am - 4:50 pm
STL
-
ICN
20h 50m
2 stops
Delta Logo
9:35 am - 1:20 pm
ICN
-
STL
18h 45m
1 stop
$1,110Delta
Mon, Aug 24 - Sat, Sep 5
Cathay Pacific Logo
6:00 am - 12:40 pm
MLI
-
ICN
40h 40m
2 stops
Cathay Pacific Logo
3:10 pm - 6:19 pm
ICN
-
MLI
41h 09m
2 stops
$1,205Cathay Pacific
Sun, Aug 30 - Tue, Sep 22
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
$1,241EVA Air
Mon, Aug 24 - Sat, Sep 5
Cathay Pacific Logo
11:43 am - 2:05 pm
MLI
-
ICN
36h 22m
2 stops
Cathay Pacific Logo
8:00 am - 6:16 pm
ICN
-
MLI
24h 16m
2 stops
$1,268Cathay Pacific
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$401
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 15% lower on average.
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 $25,503
Business Class flights to Seoulfrom $4,571
Premium Economy Class flights to Seoulfrom $7,901
Economy Class flights to Seoulfrom $918