Cheap Flights to Illinois

Popular airlines to Illinois

  • Qantas Airways

    Qantas Airways

  • United

    United

  • Virgin Australia

    Virgin Australia

  • American Airlines

    American Airlines

  • Cathay Pacific

    Cathay Pacific

  • Qatar Airways

    Qatar Airways

  • Emirates

    Emirates

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 35% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Popular cities in Illinois

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

Chicago

Chicago

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
Wed., 26 Nov. - Thu., 11 Dec.
SYD
Sydney
ORD
Chicago
AU$1,744 Return, found 18 hours ago
AU$1,744
Return
found 18 hours ago
Select Air Canada flight, departing Wed., 26 Nov. from Sydney to Chicago, returning Thu., 11 Dec., priced at AU$1,744 found 18 hours ago
United
Thu., 5 Jun. - Mon., 30 Jun.
SYD
Sydney
ORD
Chicago
AU$1,853 Return, found 12 hours ago
AU$1,853
Return
found 12 hours ago
Select United flight, departing Thu., 5 Jun. from Sydney to Chicago, returning Mon., 30 Jun., priced at AU$1,853 found 12 hours ago
American Airlines
Tue., 17 Jun. - Fri., 11 Jul.
SYD
Sydney
ORD
Chicago
AU$1,866 Return, found 13 hours ago
AU$1,866
Return
found 13 hours ago
Select American Airlines flight, departing Tue., 17 Jun. from Sydney to Chicago, returning Fri., 11 Jul., priced at AU$1,866 found 13 hours ago
United
Mon., 14 Jul. - Thu., 24 Jul.
SYD
Sydney
PIA
Peoria
AU$1,869 Return, found 15 hours ago
AU$1,869
Return
found 15 hours ago
Select United flight, departing Mon., 14 Jul. from Sydney to Peoria, returning Thu., 24 Jul., priced at AU$1,869 found 15 hours ago
Air Canada
Sun., 7 Sep. - Sun., 21 Sep.
SYD
Sydney
STL
St. Louis
AU$1,869 Return, found 1 hour ago
AU$1,869
Return
found 1 hour ago
Select Air Canada flight, departing Sun., 7 Sep. from Sydney to St. Louis, returning Sun., 21 Sep., priced at AU$1,869 found 1 hour ago
United
Fri., 20 Jun. - Tue., 24 Jun.
SYD
Sydney
MLI
Moline
AU$1,870 Return, found 1 day ago
AU$1,870
Return
found 1 day ago
Select United flight, departing Fri., 20 Jun. from Sydney to Moline, returning Tue., 24 Jun., priced at AU$1,870 found 1 day ago
Delta
Sun., 7 Sep. - Sun., 21 Sep.
SYD
Sydney
STL
St. Louis
AU$1,884 Return, found 1 hour ago
AU$1,884
Return
found 1 hour ago
Select Delta flight, departing Sun., 7 Sep. from Sydney to St. Louis, returning Sun., 21 Sep., priced at AU$1,884 found 1 hour ago
Delta
Fri., 20 Jun. - Tue., 24 Jun.
SYD
Sydney
BMI
Bloomington
AU$1,885 Return, found 1 day ago
AU$1,885
Return
found 1 day ago
Select Delta flight, departing Fri., 20 Jun. from Sydney to Bloomington, returning Tue., 24 Jun., priced at AU$1,885 found 1 day ago
Cathay Pacific
Mon., 24 Nov. - Tue., 9 Dec.
SYD
Sydney
ORD
Chicago
AU$1,899 Return, found 18 hours ago
AU$1,899
Return
found 18 hours ago
Select Cathay Pacific flight, departing Mon., 24 Nov. from Sydney to Chicago, returning Tue., 9 Dec., priced at AU$1,899 found 18 hours ago
Air New Zealand
Tue., 5 Aug. - Wed., 20 Aug.
SYD
Sydney
ORD
Chicago
AU$2,004 Return, found 21 hours ago
AU$2,004
Return
found 21 hours ago
Select Air New Zealand flight, departing Tue., 5 Aug. from Sydney to Chicago, returning Wed., 20 Aug., priced at AU$2,004 found 21 hours ago

Illinois Flights

When was the last time you embarked on a grand adventure? Whether it was last month or years ago, there’s never been a better time to start planning your next big trip. Book tickets to Illinois today and get ready to build your travel itinerary, from exploring the area with your family to recharging in the change of scenery. During your stay, visit the must-see attractions, chow down on the local cuisine, and relish in a holiday state of mind. However you decide to spend your upcoming trip, we’re here to make your travel plans easy and affordable.

Book Your Illinois Airfare

At Expedia.com.au, it’s simple to find cheap flights to Illinois that won’t cause your wallet to flinch. Browse through our inventory of Illinois flights and find airfare matching your preferred times and dates. Looking for a red-eye flight or an afternoon departure? Don’t worry, we’ve got you covered. You can even take advantage of our convenient My Scratchpad online feature, which lets you track your search results with ease. No more excuses; book your travel arrangements with us today to make your dream trip a reality.

Illinois Flights Information

Airlines serving
United, Delta, Qantas Airways, American Airlines, Air Canada, Japan Airlines, Cathay Pacific, Air New Zealand
Roundtrip price
from AU$1,744

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$1,744. 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$1,744 and AU$2,004. Many lucky travellers nabbed one-way tickets from Sydney (SYD) for as little as AU$981.
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$1,744 to AU$2,004.
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.

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.

Japan Airlines
Tue., 15 Jul. - Mon., 4 Aug.
PER
Perth
ORD
Chicago
AU$1,983 Return, found 1 hour ago
AU$1,983
Return
found 1 hour ago
Select Japan Airlines flight, departing Tue., 15 Jul. from Perth to Chicago, returning Mon., 4 Aug., priced at AU$1,983 found 1 hour ago
*Available to Expedia members.