Flight Destinations in Illinois

View ฿5,030 flight on Fri, 10 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 40% 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 ฿5,030 for one-way flights and ฿8,650 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 10 Apr - Sat, 11 Apr
CVG
Cincinnati
ORD
Chicago
฿8,650 Return, found 1 day ago
฿8,650
Return
found 1 day ago
Select Delta flight, departing Fri, 10 Apr from Cincinnati to Chicago, returning Sat, 11 Apr, priced at ฿8,650 found 1 day ago
United
Fri, 10 Apr - Sat, 11 Apr
CVG
Cincinnati
ORD
Chicago
฿8,955 Return, found 1 day ago
฿8,955
Return
found 1 day ago
Select United flight, departing Fri, 10 Apr from Cincinnati to Chicago, returning Sat, 11 Apr, priced at ฿8,955 found 1 day ago
Delta
Fri, 10 Apr - Sat, 11 Apr
CVG
Cincinnati
ORD
Chicago
฿9,085 Return, found 1 day ago
฿9,085
Return
found 1 day ago
Select Delta flight, departing Fri, 10 Apr from Cincinnati to Chicago, returning Sat, 11 Apr, priced at ฿9,085 found 1 day ago
American Airlines
Fri, 10 Apr - Sat, 11 Apr
CVG
Cincinnati
ORD
Chicago
฿10,860 Return, found 1 day ago
฿10,860
Return
found 1 day ago
Select American Airlines flight, departing Fri, 10 Apr from Cincinnati to Chicago, returning Sat, 11 Apr, priced at ฿10,860 found 1 day ago
Delta
Wed, 25 Mar - Fri, 27 Mar
CVG
Cincinnati
STL
St. Louis
฿13,880 Return, found 1 day ago
฿13,880
Return
found 1 day ago
Select Delta flight, departing Wed, 25 Mar from Cincinnati to St. Louis, returning Fri, 27 Mar, priced at ฿13,880 found 1 day ago
Philippine Airlines
Tue, 6 Oct - Fri, 30 Oct
BKK
Bangkok
ORD
Chicago
฿22,980 Return, found 9 hours ago
฿22,980
Return
found 9 hours ago
Select Philippine Airlines flight, departing Tue, 6 Oct from Bangkok to Chicago, returning Fri, 30 Oct, priced at ฿22,980 found 9 hours ago
Philippine Airlines
Wed, 30 Sept - Wed, 14 Oct
BKK
Bangkok
STL
St. Louis
฿28,385 Return, found 2 days ago
฿28,385
Return
found 2 days ago
Select Philippine Airlines flight, departing Wed, 30 Sept from Bangkok to St. Louis, returning Wed, 14 Oct, priced at ฿28,385 found 2 days ago
Delta
Fri, 11 Dec - Sat, 2 Jan
BKK
Bangkok
MDW
Chicago
฿30,890 Return, found 3 days ago
฿30,890
Return
found 3 days ago
Select Delta flight, departing Fri, 11 Dec from Bangkok to Chicago, returning Sat, 2 Jan, priced at ฿30,890 found 3 days ago
Korean Air
Sun, 20 Dec - Sat, 2 Jan
BKK
Bangkok
ORD
Chicago
฿31,452 Return, found 9 hours ago
฿31,452
Return
found 9 hours ago
Select Korean Air flight, departing Sun, 20 Dec from Bangkok to Chicago, returning Sat, 2 Jan, priced at ฿31,452 found 9 hours ago
Air Canada
Tue, 12 May - Wed, 26 Aug
BKK
Bangkok
STL
St. Louis
฿33,560 Return, found 3 hours ago
฿33,560
Return
found 3 hours ago
Select Air Canada flight, departing Tue, 12 May from Bangkok to St. Louis, returning Wed, 26 Aug, priced at ฿33,560 found 3 hours 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.

Philippine Airlines
Tue, 6 Oct - Fri, 30 Oct
BKK
Bangkok
ORD
Chicago
฿22,980 Return, found 9 hours ago
฿22,980
Return
found 9 hours ago
Select Philippine Airlines flight, departing Tue, 6 Oct from Bangkok to Chicago, returning Fri, 30 Oct, priced at ฿22,980 found 9 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 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 ฿8,650. 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 ฿8,650 and ฿33,560. Many lucky travellers nabbed one-way tickets from Cincinnati (CVG) for as little as ฿5,030.
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 ฿8,650 to ฿33,560.
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 traveller'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.