Cheap Flights to Illinois from ₩649,900

Popular airlines to Illinois

  • Delta

    Delta

  • American Airlines

    American Airlines

  • Frontier Airlines

    Frontier Airlines

  • United

    United

  • Spirit Airlines

    Spirit Airlines

  • Southwest Airlines

    Southwest Airlines

  • JetBlue Airways

    JetBlue Airways

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Top Cities to Visit in Illinois

Chicago which includes a city and a high rise building as well as a family
FlightsFlights

Chicago

Chicago
Champaign showing signage and heritage elements
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Champaign

Champaign

How much is the cheapest flight to Illinois?

Prices were available within the past 7 days and start at ₩649,900 for one-way flights and ₩799,000 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Sep 11 - Fri, Oct 31
ICN
Seoul
ORD
Chicago
₩799,000 Roundtrip, found 4 days ago
₩799,000
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Sep 11 from Seoul to Chicago, returning Fri, Oct 31, priced at ₩799,000 found 4 days ago
Hawaiian Airlines
Sun, Sep 14 - Wed, Nov 5
ICN
Seoul
ORD
Chicago
₩812,600 Roundtrip, found 9 hours ago
₩812,600
Roundtrip
found 9 hours ago
Select Hawaiian Airlines flight, departing Sun, Sep 14 from Seoul to Chicago, returning Wed, Nov 5, priced at ₩812,600 found 9 hours ago
Alaska Airlines
Sat, Sep 13 - Wed, Nov 5
ICN
Seoul
ORD
Chicago
₩812,600 Roundtrip, found 9 hours ago
₩812,600
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Sat, Sep 13 from Seoul to Chicago, returning Wed, Nov 5, priced at ₩812,600 found 9 hours ago
Air Canada
Fri, Sep 19 - Mon, Sep 22
ICN
Seoul
ORD
Chicago
₩830,400 Roundtrip, found 3 days ago
₩830,400
Roundtrip
found 3 days ago
Select Air Canada flight, departing Fri, Sep 19 from Seoul to Chicago, returning Mon, Sep 22, priced at ₩830,400 found 3 days ago
American Airlines
Fri, Nov 7 - Sun, Nov 16
ICN
Seoul
STL
St. Louis
₩839,700 Roundtrip, found 3 days ago
₩839,700
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Nov 7 from Seoul to St. Louis, returning Sun, Nov 16, priced at ₩839,700 found 3 days ago
United
Mon, Oct 20 - Tue, Oct 28
ICN
Seoul
ORD
Chicago
₩839,700 Roundtrip, found 2 days ago
₩839,700
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 20 from Seoul to Chicago, returning Tue, Oct 28, priced at ₩839,700 found 2 days ago
Delta
Thu, Sep 11 - Mon, Sep 15
ICN
Seoul
STL
St. Louis
₩882,900 Roundtrip, found 7 hours ago
₩882,900
Roundtrip
found 7 hours ago
Select Delta flight, departing Thu, Sep 11 from Seoul to St. Louis, returning Mon, Sep 15, priced at ₩882,900 found 7 hours ago
American Airlines
Tue, Mar 3 - Tue, Mar 17
ICN
Seoul
CMI
Champaign
₩929,100 Roundtrip, found 1 day ago
₩929,100
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Mar 3 from Seoul to Champaign, returning Tue, Mar 17, priced at ₩929,100 found 1 day ago
American Airlines
Tue, Nov 11 - Tue, Nov 25
ICN
Seoul
BMI
Bloomington
₩929,800 Roundtrip, found 2 days ago
₩929,800
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Nov 11 from Seoul to Bloomington, returning Tue, Nov 25, priced at ₩929,800 found 2 days ago
American Airlines
Wed, Sep 3 - Tue, Sep 30
ICN
Seoul
PIA
Peoria
₩979,100 Roundtrip, found 1 day ago
₩979,100
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Sep 3 from Seoul to Peoria, returning Tue, Sep 30, priced at ₩979,100 found 1 day ago

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.

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 ₩799,000. 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 ₩799,000 and ₩1,246,200. Many lucky travelers nabbed one-way tickets from Seoul (ICN) for as little as ₩649,900.
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 ₩799,000 to ₩1,246,200.
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.

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.

American Airlines
Thu, Sep 11 - Fri, Oct 31
ICN
Seoul
ORD
Chicago
₩799,000 Roundtrip, found 4 days ago
₩799,000
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Sep 11 from Seoul to Chicago, returning Fri, Oct 31, priced at ₩799,000 found 4 days ago
*Available to Expedia members.