$452 Find Cheap Flights from Illinois to South Korea

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Useful Info
Useful Info

Good to know

Low seasonJanuary
High seasonJune
Cheapest flight$452
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 25% 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 $619.

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

    Based on KAYAK data, the cheapest day to fly to South Korea is Tuesday where round-trip tickets can be as cheap as $1,071. 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 at night, when round-trip flights cost $978 on average. Morning departures are around 17% 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 $788 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 $788.

  • 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 $1,030 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $2,005 and $1,773 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 05m, 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 Wonju (0%) and to Cheongju (0%) are also popular.

Book cheap flights from Illinois to South Korea

Recent round-trip flight deals

10/1Wed
1 stopTurkish Airlines
42h 55mORD-ICN
10/14Tue
1 stopTurkish Airlines
36h 40mICN-ORD
$890
8/28Thu
1 stopCathay Pacific
39h 10mORD-ICN
9/7Sun
1 stopCathay Pacific
37h 15mICN-ORD
$900
8/27Wed
2 stops
39h 05mORD-ICN
9/10Wed
1 stop
24h 46mICN-ORD
$956
11/10Mon
1 stopUnited Airlines
18h 10mSTL-ICN
11/27Thu
1 stopUnited Airlines
21h 27mICN-STL
$968
9/1Mon
1 stopAmerican Airlines
18h 29mSTL-ICN
9/30Tue
1 stopAmerican Airlines
19h 02mICN-STL
$976
9/1Mon
1 stopAmerican Airlines
20h 15mSTL-ICN
9/30Tue
2 stopsAmerican Airlines
20h 24mICN-STL
$981
9/1Mon
2 stopsUnited Airlines
21h 40mSTL-ICN
9/20Sat
1 stopUnited Airlines
19h 23mICN-STL
$982
11/10Mon
2 stopsDelta
30h 45mSTL-ICN
11/27Thu
2 stopsDelta
21h 23mICN-STL
$989
8/27Wed
3 stops
46h 00mORD-ICN
9/10Wed
3 stops
35h 32mICN-ORD
$1,017
9/27Sat
1 stopDelta
22h 30mSTL-ICN
10/26Sun
1 stopDelta
17h 32mICN-STL
$1,020

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Recent one-way flight deals

9/13Sat
2 stopsWestJet
39h 05mORD-ICN
$452
7/18Fri
1 stop
35h 12mORD-ICN
$491
9/13Sat
1 stopTurkish Airlines
27h 55mORD-ICN
$493
7/29Tue
1 stopTurkish Airlines
40h 15mORD-ICN
$497
8/12Tue
2 stopsUnited Airlines
23h 00mSTL-ICN
$522
7/2Wed
2 stopsUnited Airlines
24h 38mSTL-ICN
$563
7/8Tue
1 stopDelta
17h 35mSTL-ICN
$574
6/5Thu
1 stopAmerican Airlines
29h 43mSTL-ICN
$575
7/7Mon
2 stopsDelta
31h 15mSTL-ICN
$580
6/5Thu
2 stopsAmerican Airlines
33h 07mSTL-ICN
$643

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Last minute flights from Illinois to South Korea

Last minute flight, train and bus deals

5/23Fri
multi-stop
32h 40mORD-ICN
5/27Tue
multi-stop
36h 51mICN-ORD
$1,177
5/23Fri
multi-stop
32h 47mORD-ICN
5/27Tue
multi-stop
31h 12mICN-ORD
$1,194
5/20Tue
multi-stopAir Canada
42h 35mSTL-ICN
6/5Thu
multi-stopAir Canada
40h 13mICN-STL
$1,355
5/20Tue
multi-stopAir Canada
42h 35mSTL-ICN
6/9Mon
multi-stopAir Canada
40h 13mICN-STL
$1,487
5/20Tue
multi-stopUnited Airlines
18h 00mSTL-ICN
6/12Thu
multi-stopUnited Airlines
26h 13mICN-STL
$1,510
5/20Tue
multi-stopUnited Airlines
18h 00mSTL-ICN
6/10Tue
multi-stopUnited Airlines
21h 09mICN-STL
$1,515
5/20Tue
multi-stopDelta
18h 10mSTL-ICN
6/13Fri
multi-stopDelta
27h 36mICN-STL
$1,520
5/20Tue
multi-stopLOT
23h 30mORD-ICN
6/11Wed
multi-stopLOT
44h 55mICN-ORD
$1,554
5/20Tue
multi-stopLOT
42h 45mORD-ICN
6/1Sun
multi-stopLOT
46h 20mICN-ORD
$1,574
5/20Tue
multi-stopDelta
19h 40mSTL-ICN
6/8Sun
multi-stopDelta
17h 11mICN-STL
$2,059

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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 $23,025
Business Class flights to South Koreafrom $4,243
Prem Econ Class flights to South Koreafrom $4,393
Economy Class flights to South Koreafrom $788

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