Illinois Flights - Book Cheap Flights to Illinois

View RM389 flight on Wed, 15 Apr 2026Opens in a new window

Popular airlines to Illinois

  • Delta

    Delta

  • American Airlines

    American Airlines

  • Frontier Airlines

    Frontier Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Spirit Airlines

    Spirit Airlines

  • JetBlue Airways

    JetBlue Airways

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Cheap round-trip flights to Illinois

Prices were available within the past 7 days and start at RM389 for one-way flights and RM910 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 15 Apr - Thu, 16 Apr
BOS
Boston
ORD
Chicago
RM910 Return, found 1 hour ago
RM910
Return
found 1 hour ago
Select Delta flight, departing Wed, 15 Apr from Boston to Chicago, returning Thu, 16 Apr, priced at RM910 found 1 hour ago
American Airlines
Wed, 15 Apr - Thu, 16 Apr
BOS
Boston
ORD
Chicago
RM1,004 Return, found 1 hour ago
RM1,004
Return
found 1 hour ago
Select American Airlines flight, departing Wed, 15 Apr from Boston to Chicago, returning Thu, 16 Apr, priced at RM1,004 found 1 hour ago
United
Thu, 16 Apr - Fri, 17 Apr
BOS
Boston
ORD
Chicago
RM1,246 Return, found 1 hour ago
RM1,246
Return
found 1 hour ago
Select United flight, departing Thu, 16 Apr from Boston to Chicago, returning Fri, 17 Apr, priced at RM1,246 found 1 hour ago
Turkish Airlines
Wed, 14 Oct - Wed, 21 Oct
KUL
Kuala Lumpur
ORD
Chicago
RM3,992 Return, found 6 days ago
RM3,992
Return
found 6 days ago
Select Turkish Airlines flight, departing Wed, 14 Oct from Kuala Lumpur to Chicago, returning Wed, 21 Oct, priced at RM3,992 found 6 days ago
Etihad Airways
Thu, 19 Feb - Wed, 4 Mar
KUL
Kuala Lumpur
ORD
Chicago
RM4,113 Return, just found
RM4,113
Return
just found
Select Etihad Airways flight, departing Thu, 19 Feb from Kuala Lumpur to Chicago, returning Wed, 4 Mar, priced at RM4,113 just found
Malaysia Airlines
Wed, 30 Sept - Mon, 5 Oct
KUL
Kuala Lumpur
ORD
Chicago
RM4,310 Return, found 1 day ago
RM4,310
Return
found 1 day ago
Select Malaysia Airlines flight, departing Wed, 30 Sept from Kuala Lumpur to Chicago, returning Mon, 5 Oct, priced at RM4,310 found 1 day ago
Japan Airlines
Wed, 30 Sept - Mon, 5 Oct
KUL
Kuala Lumpur
ORD
Chicago
RM4,420 Return, found 1 day ago
RM4,420
Return
found 1 day ago
Select Japan Airlines flight, departing Wed, 30 Sept from Kuala Lumpur to Chicago, returning Mon, 5 Oct, priced at RM4,420 found 1 day ago
Korean Air
Mon, 23 Mar - Tue, 31 Mar
KUL
Kuala Lumpur
ORD
Chicago
RM4,472 Return, found 4 days ago
RM4,472
Return
found 4 days ago
Select Korean Air flight, departing Mon, 23 Mar from Kuala Lumpur to Chicago, returning Tue, 31 Mar, priced at RM4,472 found 4 days ago
Cathay Pacific
Tue, 10 Nov - Tue, 17 Nov
KUL
Kuala Lumpur
ORD
Chicago
RM4,480 Return, found 16 hours ago
RM4,480
Return
found 16 hours ago
Select Cathay Pacific flight, departing Tue, 10 Nov from Kuala Lumpur to Chicago, returning Tue, 17 Nov, priced at RM4,480 found 16 hours ago
Air Canada
Wed, 14 Oct - Wed, 21 Oct
KUL
Kuala Lumpur
ORD
Chicago
RM4,586 Return, found 6 days ago
RM4,586
Return
found 6 days ago
Select Air Canada flight, departing Wed, 14 Oct from Kuala Lumpur to Chicago, returning Wed, 21 Oct, priced at RM4,586 found 6 days ago

Trending flights to Illinois

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

Turkish Airlines
Wed, 14 Oct - Wed, 21 Oct
KUL
Kuala Lumpur
ORD
Chicago
RM3,992 Return, found 6 days ago
RM3,992
Return
found 6 days ago
Select Turkish Airlines flight, departing Wed, 14 Oct from Kuala Lumpur to Chicago, returning Wed, 21 Oct, priced at RM3,992 found 6 days 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 travelling somewhere new or rendezvousing at a favourite 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 RM910. 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 RM910 and RM4,586. Many lucky travellers nabbed one-way tickets from Boston (BOS) for as little as RM389.
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.

How much is a plane ticket to Illinois?
In the last seven days, plane fares to Illinois ranged from RM910 to RM4,586.
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 18ºC to 24ºC 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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