Cheap Flights to Illinois

View AU$919 flight on Mon, 25 May 2026Opens in a new window

Popular airlines to Illinois

  • Delta

  • Frontier Airlines

  • American Airlines

  • United

  • Spirit Airlines

  • Alaska Airlines

  • Southwest Airlines

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Cheapest Flights to Illinois

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

Air Canada
Thu, 4 June - Mon, 8 June
MEL
Melbourne
STL
St. Louis
AU$1,434 Return, found 3 hours ago
AU$1,434
Return
found 3 hours ago
Select Air Canada flight, departing Thu, 4 June from Melbourne to St. Louis, returning Mon, 8 June, priced at AU$1,434 found 3 hours ago
American Airlines
Wed, 5 Aug - Mon, 17 Aug
MEL
Melbourne
STL
St. Louis
AU$1,620 Return, found 3 hours ago
AU$1,620
Return
found 3 hours ago
Select American Airlines flight, departing Wed, 5 Aug from Melbourne to St. Louis, returning Mon, 17 Aug, priced at AU$1,620 found 3 hours ago
United
Fri, 1 May - Fri, 15 May
MEL
Melbourne
MLI
Moline
AU$1,635 Return, found 1 day ago
AU$1,635
Return
found 1 day ago
Select United flight, departing Fri, 1 May from Melbourne to Moline, returning Fri, 15 May, priced at AU$1,635 found 1 day ago
United
Thu, 14 May - Thu, 25 June
MEL
Melbourne
PIA
Peoria
AU$1,637 Return, found 3 days ago
AU$1,637
Return
found 3 days ago
Select United flight, departing Thu, 14 May from Melbourne to Peoria, returning Thu, 25 June, priced at AU$1,637 found 3 days ago
Air Canada
Wed, 27 May - Wed, 3 June
SYD
Sydney
STL
St. Louis
AU$1,755 Return, found 4 hours ago
AU$1,755
Return
found 4 hours ago
Select Air Canada flight, departing Wed, 27 May from Sydney to St. Louis, returning Wed, 3 June, priced at AU$1,755 found 4 hours ago
Delta
Fri, 29 May - Tue, 2 June
MEL
Melbourne
BMI
Bloomington
AU$2,026 Return, just found
AU$2,026
Return
just found
Select Delta flight, departing Fri, 29 May from Melbourne to Bloomington, returning Tue, 2 June, priced at AU$2,026 just found
Air Canada
Thu, 7 May - Wed, 20 May
SYD
Sydney
ORD
Chicago
AU$2,043 Return, found 1 hour ago
AU$2,043
Return
found 1 hour ago
Select Air Canada flight, departing Thu, 7 May from Sydney to Chicago, returning Wed, 20 May, priced at AU$2,043 found 1 hour ago
Delta
Fri, 8 May - Mon, 8 June
MEL
Melbourne
MDW
Chicago
AU$2,124 Return, found 6 hours ago
AU$2,124
Return
found 6 hours ago
Select Delta flight, departing Fri, 8 May from Melbourne to Chicago, returning Mon, 8 June, priced at AU$2,124 found 6 hours ago
Delta
Wed, 10 June - Mon, 27 July
MEL
Melbourne
ORD
Chicago
AU$2,124 Return, just found
AU$2,124
Return
just found
Select Delta flight, departing Wed, 10 June from Melbourne to Chicago, returning Mon, 27 July, priced at AU$2,124 just found
Japan Airlines
Tue, 28 Apr - Sat, 2 May
SYD
Sydney
MLI
Moline
AU$2,163 Return, found 2 days ago
AU$2,163
Return
found 2 days ago
Select Japan Airlines flight, departing Tue, 28 Apr from Sydney to Moline, returning Sat, 2 May, priced at AU$2,163 found 2 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.

Air Canada
Thu, 4 June - Mon, 8 June
MEL
Melbourne
STL
St. Louis
AU$1,434 Return, found 3 hours ago
AU$1,434
Return
found 3 hours ago
Select Air Canada flight, departing Thu, 4 June from Melbourne to St. Louis, returning Mon, 8 June, priced at AU$1,434 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 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 AU$1,434. 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 AU$1,434 and AU$2,163. Many lucky travellers nabbed one-way tickets from Melbourne (AVV) for as little as AU$919.
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 AU$1,434 to AU$2,163.
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.

Travel information

Illinois Flights Information

Airlines serving
Jetstar, Air Canada, American Airlines, Qantas Airways, United, Delta, Japan Airlines
Roundtrip price
from AU$1,434
Illinois Flights Information

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