$406 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 8/5. 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, Sep 28 - Tue, Oct 6
Multiple Airlines Logo
11:29 am - 2:05 pm
MLI
-
ICN
36h 36m
2 stops
Multiple Airlines Logo
1:55 am - 11:25 pm
ICN
-
MLI
35h 30m
2 stops
$1,143Multiple Airlines
Mon, Aug 24 - Sat, Sep 5
Cathay Pacific Logo
11:39 am - 7:05 pm
MLI
-
ICN
41h 26m
2 stops
Cathay Pacific Logo
8:00 am - 6:11 pm
ICN
-
MLI
24h 11m
2 stops
$1,163Cathay Pacific
Mon, Aug 24 - Fri, Sep 4
Cathay Pacific Logo
6:00 am - 12:40 pm
MLI
-
ICN
40h 40m
2 stops
Cathay Pacific Logo
1:55 am - 6:11 pm
ICN
-
MLI
30h 16m
2 stops
$1,166Cathay Pacific
Sat, Oct 17 - Sun, Oct 25
Cathay Pacific Logo
4:15 pm - 5:30 am
ORD
-
ICN
23h 15m
1 stop
Cathay Pacific Logo
1:45 pm - 1:55 pm
ICN
-
ORD
38h 10m
1 stop
$1,174Cathay Pacific
Mon, Aug 24 - Tue, Sep 8
EVA Air Logo
12:30 am - 7:15 pm
ORD
-
GMP
28h 45m
1 stop
EVA Air Logo
7:15 pm - 8:45 pm
GMP
-
ORD
39h 30m
1 stop
$1,239EVA Air
Sun, Oct 25 - Fri, Nov 20
Qatar Airways Logo
7:00 am - 5:15 pm
STL
-
ICN
44h 15m
2 stops
Qatar Airways Logo
12:20 am - 11:59 pm
ICN
-
STL
38h 39m
2 stops
$1,251Qatar Airways
Wed, Sep 2 - Sat, Sep 12
Air Canada Logo
12:10 pm - 4:25 pm
STL
-
ICN
38h 15m
1 stop
Air Canada Logo
7:05 pm - 2:00 pm
ICN
-
STL
32h 55m
1 stop
$1,297Air Canada
Sun, Sep 6 - Sun, Sep 13
Air Canada Logo
2:40 pm - 4:05 pm
STL
-
ICN
35h 25m
2 stops
Air Canada Logo
7:05 pm - 2:00 pm
ICN
-
STL
32h 55m
1 stop
$1,302Air Canada
Wed, Sep 2 - Sat, Sep 12
Asiana Airlines Logo
12:10 pm - 4:25 pm
STL
-
ICN
38h 15m
1 stop
Asiana Airlines Logo
7:05 pm - 2:00 pm
ICN
-
STL
32h 55m
1 stop
$1,336Asiana Airlines
Thu, Sep 17 - Fri, Nov 20
EVA Air Logo
12:30 am - 12:50 pm
ORD
-
GMP
22h 20m
1 stop
EVA Air Logo
1:50 pm - 7:35 pm
GMP
-
ORD
20h 45m
1 stop
$1,361EVA Air
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$406
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 13% 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 $26,570
Business Class flights to Seoulfrom $4,268
Premium Economy Class flights to Seoulfrom $5,635
Economy Class flights to Seoulfrom $813