How does KAYAK find such low prices on flights from Illinois to Jeju City?

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 Jeju City.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Jeju City 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 Jeju City?

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 Jeju City 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 Jeju City?

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

$615 CHEAP FLIGHTS from Illinois to Jeju City

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Cheap Flights from Illinois to Jeju City

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Illinois to Jeju City

Thu, Dec 3 - Thu, Dec 10

11:45 am - 10:40 pmORD Chicago O'Hare Intl-CJU Jeju City

43h 55m2 stops Istanbul Shanghai Pu Dong

11:10 am - 10:00 amCJU Jeju City-ORD Chicago O'Hare Intl

37h 50m2 stops Shanghai Pu Dong Istanbul

$1,180Multiple Airlines

Tue, Feb 16 - Sat, Feb 20

2:10 pm - 7:10 pmORD Chicago O'Hare Intl-CJU Jeju City

38h 00m1 stop Hong Kong Intl

7:45 am - 12:30 pmCJU Jeju City-ORD Chicago O'Hare Intl

19h 45m1 stop Hong Kong Intl

$1,228Cathay Pacific

Tue, Feb 16 - Sat, Feb 20

2:10 pm - 7:10 pmORD Chicago O'Hare Intl-CJU Jeju City

38h 00m1 stop Hong Kong Intl

7:45 am - 12:30 pmCJU Jeju City-ORD Chicago O'Hare Intl

19h 45m1 stop Hong Kong Intl

$1,259Cathay Pacific

Tue, Dec 1 - Tue, Dec 8

11:45 am - 5:55 pmORD Chicago O'Hare Intl-CJU Jeju City

39h 10m2 stops Istanbul Shanghai Pu Dong

1:50 pm - 10:00 amCJU Jeju City-ORD Chicago O'Hare Intl

35h 10m2 stops Shanghai Pu Dong Istanbul

$1,419Multiple Airlines

Mon, Nov 30 - Mon, Dec 7

10:25 am - 7:10 pmORD Chicago O'Hare Intl-CJU Jeju City

41h 45m2 stops Tokyo Narita Hong Kong Intl

7:45 am - 10:00 amCJU Jeju City-ORD Chicago O'Hare Intl

41h 15m2 stops Hong Kong Intl Tokyo Haneda

$1,433Multiple Airlines

Mon, Nov 30 - Mon, Dec 7

11:45 am - 10:35 amORD Chicago O'Hare Intl-CJU Jeju City

55h 50m3 stops Istanbul Hong Kong Intl Shanghai Pu Dong

11:35 am - 10:00 amCJU Jeju City-ORD Chicago O'Hare Intl

37h 25m3 stops Shanghai Pu Dong Hong Kong Intl Istanbul

$1,451Multiple Airlines

Tue, Dec 1 - Tue, Dec 8

2:10 pm - 6:40 amORD Chicago O'Hare Intl-CJU Jeju City

25h 30m1 stop Hong Kong Intl

7:45 am - 12:30 pmCJU Jeju City-ORD Chicago O'Hare Intl

19h 45m1 stop Hong Kong Intl

$1,464Cathay Pacific

Sat, Nov 14 - Sat, Nov 21

11:45 am - 12:50 pmORD Chicago O'Hare Intl-CJU Jeju City

34h 05m2 stops Istanbul Shanghai Pu Dong

1:50 pm - 6:20 pmCJU Jeju City-ORD Chicago O'Hare Intl

43h 30m2 stops Shanghai Pu Dong Istanbul

$1,470Multiple Airlines

Mon, Nov 30 - Mon, Dec 7

10:30 am - 5:45 pmORD Chicago O'Hare Intl-CJU Jeju City

40h 15m1 stop Tokyo Narita

10:10 pm - 4:55 pmCJU Jeju City-ORD Chicago O'Hare Intl

57h 45m2 stops Hong Kong Intl Manila Ninoy Aquino Intl

$1,476Multiple Airlines

Tue, Dec 1 - Tue, Dec 8

8:15 pm - 9:25 pmORD Chicago O'Hare Intl-CJU Jeju City

58h 10m3 stops Istanbul Hong Kong Intl Shanghai Pu Dong

11:35 am - 10:00 amCJU Jeju City-ORD Chicago O'Hare Intl

37h 25m3 stops Shanghai Pu Dong Hong Kong Intl Istanbul

$1,500Multiple Airlines

Useful Info

Cheapest flight	$615

Flight from Chicago to Jeju City

How does KAYAK find such low prices on flights from Illinois to Jeju City?
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 Jeju City.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Jeju City?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Jeju City 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 Jeju City?
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 Jeju City 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 Jeju City?
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 Jeju City from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.