$398 Find Cheap Flights from Illinois to South Korea

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Useful Info

Good to know

Low seasonAugust
High seasonJune
Cheapest flight$398
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 26% increase in price.
Flight from Chicago O'Hare Airport to Seoul Incheon Airport

FAQs for booking flights from Illinois to South Korea

  • How does KAYAK find such low prices on flights from Illinois to South Korea?

    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 South Korea.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to South Korea?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to South Korea 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 South Korea?

    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 from Illinois to South Korea with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to South Korea?

    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 from Illinois to South Korea up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in South Korea?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in South Korea is Incheon Intl Airport (ICN), with an average flight price of $509.

  • What is the cheapest day to fly to South Korea?

    Based on KAYAK data, the cheapest day to fly to South Korea is Monday where round-trip tickets can be as cheap as $1,081. On the other hand, the most expensive day to fly is Friday, where round-trip prices are $1,377 on average.

  • What is the cheapest time of day to fly to South Korea?

    The cheapest time of day to fly to South Korea is generally in the morning, when round-trip flights cost $1,179 on average. Morning departures are around 20% cheaper than evening flights, on average. The most expensive time of day to fly to South Korea is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,432.

  • What is the cheapest flight to South Korea?

    The cheapest ticket to South Korea from Illinois found in the last 72 hours was to Incheon Intl Airport, at $772 round-trip. The most popular route is Chicago O'Hare Intl Airport (ORD) to Incheon Intl Airport (ICN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $772.

  • What is the cheapest month to fly from Illinois to South Korea?

    The cheapest month for flights from Illinois to South Korea is February, when tickets cost $1,016 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $2,016 and $1,787 respectively.

  • How far in advance should I book a flight from Illinois to South Korea?

    To get a below average price on the flight from Illinois to South Korea, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

  • How long is the flight to South Korea?

    An average nonstop flight from Illinois to South Korea takes 24h 27m, covering a distance of 6619 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Incheon Intl Airport (ICN) with an average flight time of 14h 20m.

  • What are the most popular destinations in South Korea?

    Based on KAYAK flight searches, the most popular destination is Seoul (97% of total searches to South Korea). The next most popular destinations are Busan (2%) and Jeju City (1%). Searches for flights to Daegu (0%), to Cheongju (0%) and to Wonju (0%) are also popular.

Book cheap flights from Illinois to South Korea

Recent round-trip flight deals

8/21Thu
1 stopCathay Pacific
30h 40mORD-ICN
8/31Sun
1 stopCathay Pacific
42h 15mICN-ORD
$747
8/21Thu
1 stopCathay Pacific
32h 05mORD-ICN
9/1Mon
1 stopCathay Pacific
37h 15mICN-ORD
$759
9/17Wed
2 stops
43h 50mORD-ICN
9/24Wed
1 stop
19h 26mICN-ORD
$852
9/6Sat
2 stops
37h 50mORD-ICN
9/20Sat
1 stop
19h 26mICN-ORD
$853
9/1Mon
2 stopsAmerican Airlines
29h 31mSTL-ICN
9/20Sat
1 stopAmerican Airlines
16h 50mICN-STL
$856
9/1Mon
1 stopAmerican Airlines
18h 29mSTL-ICN
9/20Sat
1 stopAmerican Airlines
29h 47mICN-STL
$857
11/10Mon
2 stopsUnited Airlines
21h 57mSTL-ICN
11/27Thu
2 stopsUnited Airlines
33h 13mICN-STL
$858
9/1Mon
2 stopsDelta
20h 30mSTL-ICN
9/20Sat
2 stopsDelta
22h 50mICN-STL
$861
9/12Fri
1 stopDelta
28h 41mSTL-ICN
10/25Sat
1 stopDelta
17h 09mICN-STL
$862
8/16Sat
2 stopsUnited Airlines
21h 35mSTL-ICN
8/23Sat
1 stopUnited Airlines
19h 23mICN-STL
$867

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Recent one-way flight deals

9/27Sat
1 stopWestJet
35h 15mORD-ICN
$398
8/18Mon
2 stops
43h 00mORD-ICN
$402
8/24Sun
2 stopsJapan Airlines
25h 05mSTL-GMP
$479
8/18Mon
2 stopsJapan Airlines
24h 49mSTL-GMP
$481
8/17Sun
1 stopDelta
22h 20mSTL-ICN
$481
10/14Tue
1 stopAmerican Airlines
31h 25mSTL-ICN
$487
10/14Tue
2 stopsAmerican Airlines
55h 22mSTL-ICN
$493
8/4Mon
1 stopTurkish Airlines
31h 50mORD-ICN
$495
10/16Thu
2 stopsDelta
31h 31mSTL-ICN
$501
8/19Tue
1 stopTurkish Airlines
31h 50mORD-ICN
$516

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Last minute flights from Illinois to South Korea

Last minute flight, train and bus deals

7/8Tue
multi-stopCathay Pacific
39h 10mORD-ICN
10/15Wed
multi-stopCathay Pacific
37h 15mICN-ORD
$1,199
7/4Fri
multi-stop
34h 15mORD-ICN
7/8Tue
multi-stop
27h 01mICN-ORD
$1,240
7/8Tue
multi-stopAir Canada
34h 25mORD-ICN
10/15Wed
multi-stopAir Canada
26h 56mICN-ORD
$1,281
7/8Tue
multi-stopAir Canada
28h 51mORD-ICN
10/15Wed
multi-stopAir Canada
26h 56mICN-ORD
$1,288
7/6Sun
multi-stopJapan Airlines
25h 50mSTL-GMP
7/8Tue
multi-stopJapan Airlines
25h 25mGMP-STL
$1,310
7/7Mon
multi-stopTurkish Airlines
40h 15mORD-ICN
7/14Mon
multi-stopTurkish Airlines
25h 40mICN-ORD
$1,314
7/8Tue
multi-stopTurkish Airlines
31h 50mORD-ICN
7/23Wed
multi-stopTurkish Airlines
24h 20mICN-ORD
$1,349
7/8Tue
multi-stopEVA Air
28h 15mORD-ICN
7/16Wed
multi-stopEVA Air
23h 10mICN-ORD
$1,370
7/7Mon
multi-stopEVA Air
21h 55mORD-ICN
10/15Wed
multi-stopEVA Air
39h 00mICN-ORD
$1,417
7/5Sat
multi-stopJapan Airlines
21h 46mSTL-GMP
7/21Mon
multi-stopJapan Airlines
29h 35mGMP-STL
$2,043

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Everything you need to know for your flight to South Korea

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to South Koreafrom $16,314
Business Class flights to South Koreafrom $4,023
Prem Econ Class flights to South Koreafrom $5,635
Economy Class flights to South Koreafrom $772

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