$392 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
Cathay Pacific Logo
6:00 am - 2:05 pm
MLI
-
ICN
42h 05m
2 stops
Cathay Pacific Logo
8:00 am - 5:42 pm
ICN
-
MLI
23h 42m
2 stops
$1,112Cathay Pacific
Mon, Sep 28 - Tue, Oct 6
Cathay Pacific Logo
6:00 am - 2:05 pm
MLI
-
ICN
42h 05m
2 stops
Cathay Pacific Logo
8:00 am - 5:42 pm
ICN
-
MLI
23h 42m
2 stops
$1,113Cathay Pacific
Wed, Sep 16 - Fri, Sep 25
WestJet Logo
1:55 pm - 6:45 pm
STL
-
ICN
38h 50m
2 stops
WestJet Logo
8:45 pm - 9:34 am
ICN
-
STL
26h 49m
2 stops
$1,151WestJet
Mon, Aug 3 - Fri, Aug 7
Multiple Airlines Logo
10:16 am - 4:30 am
ORD
-
ICN
28h 14m
2 stops
Multiple Airlines Logo
10:05 pm - 6:17 am
ICN
-
ORD
22h 12m
1 stop
$1,177Multiple Airlines
Thu, Aug 27 - Mon, Sep 7
Multiple Airlines Logo
5:30 pm - 6:45 pm
ORD
-
ICN
35h 15m
1 stop
Multiple Airlines Logo
1:00 pm - 6:19 am
ICN
-
ORD
31h 19m
1 stop
$1,181Multiple Airlines
Wed, Sep 16 - Fri, Sep 25
WestJet Logo
1:55 pm - 6:45 pm
STL
-
ICN
38h 50m
2 stops
WestJet Logo
8:45 pm - 9:34 am
ICN
-
STL
26h 49m
2 stops
$1,186WestJet
Wed, Nov 11 - Wed, Dec 2
Qatar Airways Logo
7:00 am - 10:30 am
STL
-
ICN
36h 30m
2 stops
Qatar Airways Logo
12:20 am - 11:59 pm
ICN
-
STL
38h 39m
2 stops
$1,211Qatar Airways
Wed, Aug 26 - Wed, Sep 9
EVA Air Logo
12:30 am - 12:50 pm
ORD
-
GMP
22h 20m
1 stop
EVA Air Logo
8:20 pm - 8:45 pm
GMP
-
ORD
38h 25m
1 stop
$1,241EVA Air
Fri, Nov 13 - Tue, Dec 1
Qatar Airways Logo
7:00 am - 5:15 pm
STL
-
ICN
43h 15m
2 stops
Qatar Airways Logo
12:20 am - 11:59 pm
ICN
-
STL
38h 39m
2 stops
$1,251Qatar Airways
Sun, Sep 27 - Fri, Oct 9
EVA Air Logo
12:30 am - 6:10 pm
ORD
-
GMP
27h 40m
1 stop
EVA Air Logo
1:50 pm - 8:45 pm
GMP
-
ORD
20h 55m
1 stop
$1,277EVA Air
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$392
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 14% 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 $907