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Cheap Flights to Illinois from ₩708,300

View ₩708,300 flight on Tue, Mar 23, 2027Opens in a new window

Popular airlines to Illinois

  • Delta

  • Frontier Airlines

  • American Airlines

  • United

  • Alaska Airlines

  • JetBlue Airways

  • Southwest Airlines

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How much is the cheapest flight to Illinois?

Prices were available within the past 7 days and start at ₩708,300 for one-way flights and ₩1,289,300 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Mon, Dec 14 - Mon, Jan 4
ICN
Seoul
ORD
Chicago
₩1,289,300 Roundtrip, found 3 hours ago
₩1,289,300
Roundtrip
found 3 hours ago
Select Philippine Airlines flight, departing Mon, Dec 14 from Seoul to Chicago, returning Mon, Jan 4, priced at ₩1,289,300 found 3 hours ago
Air Canada
Tue, Oct 6 - Tue, Oct 20
ICN
Seoul
ORD
Chicago
₩1,713,200 Roundtrip, found 1 hour ago
₩1,713,200
Roundtrip
found 1 hour ago
Select Air Canada flight, departing Tue, Oct 6 from Seoul to Chicago, returning Tue, Oct 20, priced at ₩1,713,200 found 1 hour ago
Asiana Airlines
Tue, Oct 6 - Sun, Oct 25
ICN
Seoul
ORD
Chicago
₩1,750,800 Roundtrip, found 5 hours ago
₩1,750,800
Roundtrip
found 5 hours ago
Select Asiana Airlines flight, departing Tue, Oct 6 from Seoul to Chicago, returning Sun, Oct 25, priced at ₩1,750,800 found 5 hours ago
United
Tue, Sep 8 - Wed, Sep 9
ICN
Seoul
ORD
Chicago
₩1,760,800 Roundtrip, found 2 days ago
₩1,760,800
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 8 from Seoul to Chicago, returning Wed, Sep 9, priced at ₩1,760,800 found 2 days ago
Turkish Airlines
Fri, Dec 18 - Tue, Jan 5
ICN
Seoul
ORD
Chicago
₩1,807,200 Roundtrip, found 3 hours ago
₩1,807,200
Roundtrip
found 3 hours ago
Select Turkish Airlines flight, departing Fri, Dec 18 from Seoul to Chicago, returning Tue, Jan 5, priced at ₩1,807,200 found 3 hours ago
EVA Airways
Tue, Nov 3 - Tue, Nov 17
ICN
Seoul
ORD
Chicago
₩1,842,900 Roundtrip, just found
₩1,842,900
Roundtrip
just found
Select EVA Airways flight, departing Tue, Nov 3 from Seoul to Chicago, returning Tue, Nov 17, priced at ₩1,842,900 just found
American Airlines
Wed, Oct 14 - Tue, Oct 20
ICN
Seoul
STL
St. Louis
₩1,915,400 Roundtrip, found 5 days ago
₩1,915,400
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Oct 14 from Seoul to St. Louis, returning Tue, Oct 20, priced at ₩1,915,400 found 5 days ago
Delta
Wed, Oct 14 - Tue, Oct 20
ICN
Seoul
STL
St. Louis
₩1,918,600 Roundtrip, found 5 days ago
₩1,918,600
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Oct 14 from Seoul to St. Louis, returning Tue, Oct 20, priced at ₩1,918,600 found 5 days ago
Korean Air
Wed, Oct 14 - Tue, Oct 20
ICN
Seoul
STL
St. Louis
₩2,018,600 Roundtrip, found 5 days ago
₩2,018,600
Roundtrip
found 5 days ago
Select Korean Air flight, departing Wed, Oct 14 from Seoul to St. Louis, returning Tue, Oct 20, priced at ₩2,018,600 found 5 days ago
United
Thu, Dec 10 - Mon, Dec 14
ICN
Seoul
MLI
Moline
₩2,102,200 Roundtrip, found 1 day ago
₩2,102,200
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 10 from Seoul to Moline, returning Mon, Dec 14, priced at ₩2,102,200 found 1 day ago

Trending flights to Illinois

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Mon, Dec 14 - Mon, Jan 4
ICN
Seoul
ORD
Chicago
₩1,289,300 Roundtrip, found 3 hours ago
₩1,289,300
Roundtrip
found 3 hours ago
Select Philippine Airlines flight, departing Mon, Dec 14 from Seoul to Chicago, returning Mon, Jan 4, priced at ₩1,289,300 found 3 hours ago

Frequently asked questions

How do I find cheap flights to Illinois that have flexible change policies?
Search for cheap flights to Illinois, then tick the "No change fee" box under the "Flexible change policies" heading. From then on it's smooth sailing. We understand that travel plans change and flexibility is essential, so book with confidence with Expedia.
Which airlines fly to Illinois?
Whether you're traveling somewhere new or rendezvousing at a favorite haunt, these airlines are waiting to take you into or near Illinois:

  • United Airlines - 13,063 flights to or near Illinois each month, including 12,950 flights to O'Hare Intl. Airport (ORD) and 108 flights to Quad City Intl. Airport (MLI) per month.
  • American Airlines - 8,977 flights to or near Illinois each month, including 8,855 flights to O'Hare Intl. Airport (ORD) and 121 flights to Quad City Intl. Airport (MLI) per month.
  • Southwest Airlines - 5,997 flights to or near Illinois each month, including 5,334 flights to Midway Intl. Airport (MDW) and 663 flights to O'Hare Intl. Airport (ORD) per month.

How can I find cheap tickets to Illinois?
One of the easiest ways to find cheap tickets to Illinois is to be flexible with your travel dates. Search for your flights, then click "flexible dates" at the top of your results. It'll reveal the cheapest prices for nearby days. The lowest price for a flight to Illinois in the last seven days was ₩1,289,300. Booking well in advance will generally help you score an even bigger bargain.
How much is a flight to Illinois?
There were plenty of bargain fares up for grabs in the last seven days, with the cost of a return airfare to Illinois ranging between ₩1,289,300 and ₩2,102,200. Many lucky travelers nabbed one-way tickets from Seoul (ICN) for as little as ₩708,300.
What are the most popular airports to fly into in Illinois?
Touch down at one of these top Illinois airports and you'll be perfectly placed to discover all that this wonderful region has to offer:

  • O'Hare Intl. Airport (ORD) - 25,318 flights per month.
  • Midway Intl. Airport (MDW) - 5,962 flights per month.
  • Quad City Intl. Airport (MLI) - 325 flights per month.

When is the cheapest time to fly to Illinois?
Take off for Illinois early in the week and you'll usually be rewarded more economical fares. Tuesday is typically the cheapest day to hop on a plane, followed by Monday. If you're hoping to avoid the most expensive flights, steer clear of Saturdays.
How much is a plane ticket to Illinois?
In the last seven days, plane fares to Illinois ranged from ₩1,289,300 to ₩2,102,200.
What is the best time to go to Illinois?
A terrific time to check out Chicago is after June 20 when the summer season starts. In Illinois's main city, average temperatures range from 65ºF to 75ºF at this time — ideal weather for sightseeing! May, June and August are the most popular months to head to this hot spot.
What months are the cheapest to book a flight to Illinois?
The top month to purchase affordable flights to Illinois is February. Remember that in the U.S, an expensive time to reserve a ticket is during the busy month of December.

Book with confidence

About Illinois

Expedia offers flights to Illinois to meet every traveler's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Illinois or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About Illinois
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