Illinois Flights - Book Cheap Flights to Illinois

View RM1,578 flight on Fri, 3 Apr 2026Opens in a new window

Popular airlines to Illinois

  • Delta

  • Frontier Airlines

  • American Airlines

  • United

  • Southwest Airlines

  • Spirit Airlines

  • Alaska Airlines

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Illinois

Prices were available within the past 7 days and start at RM1,578 for one-way flights and RM2,081 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, 29 Mar - Sun, 5 Apr
BWI
Baltimore
PIA
Peoria
RM2,081 Return, found 9 hours ago
RM2,081
Return
found 9 hours ago
Select American Airlines flight, departing Sun, 29 Mar from Baltimore to Peoria, returning Sun, 5 Apr, priced at RM2,081 found 9 hours ago
American Airlines
Sun, 29 Mar - Sun, 5 Apr
BWI
Baltimore
MLI
Moline
RM2,197 Return, found 1 day ago
RM2,197
Return
found 1 day ago
Select American Airlines flight, departing Sun, 29 Mar from Baltimore to Moline, returning Sun, 5 Apr, priced at RM2,197 found 1 day ago
American Airlines
Sun, 29 Mar - Sun, 5 Apr
BWI
Baltimore
MLI
Moline
RM2,218 Return, found 1 day ago
RM2,218
Return
found 1 day ago
Select American Airlines flight, departing Sun, 29 Mar from Baltimore to Moline, returning Sun, 5 Apr, priced at RM2,218 found 1 day ago
American Airlines
Sun, 29 Mar - Sun, 5 Apr
BWI
Baltimore
MLI
Moline
RM2,241 Return, found 1 day ago
RM2,241
Return
found 1 day ago
Select American Airlines flight, departing Sun, 29 Mar from Baltimore to Moline, returning Sun, 5 Apr, priced at RM2,241 found 1 day ago
American Airlines
Sun, 29 Mar - Sun, 5 Apr
BWI
Baltimore
PIA
Peoria
RM2,253 Return, found 9 hours ago
RM2,253
Return
found 9 hours ago
Select American Airlines flight, departing Sun, 29 Mar from Baltimore to Peoria, returning Sun, 5 Apr, priced at RM2,253 found 9 hours ago
United
Sun, 29 Mar - Sun, 5 Apr
BWI
Baltimore
PIA
Peoria
RM2,263 Return, found 9 hours ago
RM2,263
Return
found 9 hours ago
Select United flight, departing Sun, 29 Mar from Baltimore to Peoria, returning Sun, 5 Apr, priced at RM2,263 found 9 hours ago
American Airlines
Sun, 29 Mar - Sun, 5 Apr
BWI
Baltimore
PIA
Peoria
RM2,275 Return, found 9 hours ago
RM2,275
Return
found 9 hours ago
Select American Airlines flight, departing Sun, 29 Mar from Baltimore to Peoria, returning Sun, 5 Apr, priced at RM2,275 found 9 hours ago
Delta
Fri, 3 Apr - Fri, 10 Apr
BWI
Baltimore
ORD
Chicago
RM2,633 Return, found 7 hours ago
RM2,633
Return
found 7 hours ago
Select Delta flight, departing Fri, 3 Apr from Baltimore to Chicago, returning Fri, 10 Apr, priced at RM2,633 found 7 hours ago
Japan Airlines
Thu, 10 Sept - Wed, 16 Sept
HND
Tokyo
ORD
Chicago
RM4,599 Return, found 3 days ago
RM4,599
Return
found 3 days ago
Select Japan Airlines flight, departing Thu, 10 Sept from Tokyo to Chicago, returning Wed, 16 Sept, priced at RM4,599 found 3 days ago
Air Canada
Thu, 10 Sept - Wed, 16 Sept
HND
Tokyo
ORD
Chicago
RM4,759 Return, found 3 days ago
RM4,759
Return
found 3 days ago
Select Air Canada flight, departing Thu, 10 Sept from Tokyo to Chicago, returning Wed, 16 Sept, priced at RM4,759 found 3 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
Fri, 22 Jan - Sun, 31 Jan
KUL
Kuala Lumpur
ORD
Chicago
RM4,223 Return, found 5 days ago
RM4,223
Return
found 5 days ago
Select Turkish Airlines flight, departing Fri, 22 Jan from Kuala Lumpur to Chicago, returning Sun, 31 Jan, priced at RM4,223 found 5 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 RM2,081. 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 RM2,081 and RM5,099. Many lucky travellers nabbed one-way tickets from Baltimore (BWI) for as little as RM1,578.
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 RM2,081 to RM5,099.
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

Explore a world of travel with Expedia

*Available to Expedia members.