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Find cheap flights to Illinois in 2025/2026 from $1,332 This is the cheapest return flight found to Illinois from Australia on FlightsFinder on December 11th 2025 at 05:11. This offer may no longer be available. Click the offer to check live prices & dates of travel.
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Our Flight Finder compares the cheapest flights to Illinois from the most established flight comparison sites.
Fly to Illinois and visit sites like Millennium Park, Willis Tower, Navy Pier & The Art Institute of Chicago.
1. Enter your search requirements for Illinois
2. Compare the best Illinois deals from top comparison engines
3. Book your Illinois flight at the cheapest price
These economy flights were found on FlightsFinder from Australia to Illinois in the last few days. Prices subject to availability.
These economy flights were found on FlightsFinder from Australia to Illinois in the last few days. Prices subject to availability.
According to our data, January is on average the cheapest time to book flights to Illinois.
You can get flights from $1,329 return.
According to our data, November is on average the most expensive time to book flights to Illinois.
A return flight could set you back more than $1,726.
Illinois, known as the "Land of Lincoln," is a vibrant state in the heart of the Midwest, offering a diverse range of experiences for visitors. From the iconic skyline of Chicago with its towering skyscrapers and cultural attractions, to the charming small towns scattered throughout the state, Illinois blends urban excitement with rural charm. Explore the picturesque vineyards of the Shawnee Hills Wine Trail, wander through the historic neighborhoods of Springfield, or take in a show at one of the many theaters in the state. With its rich history, dynamic cities, and scenic landscapes, Illinois promises a memorable adventure for travelers of all interests.
A good price for a flight to Chicago is $1199 - $1465.
Some popular airports near the city of Illinois include O'Hare International Airport (ORD), Midway International Airport (MDW), and Chicago Rockford International Airport (RFD).
The flight to Illinois (CHI) is roughly 21 hours 1 minute and 9,235 miles (14,862 kilometres) from Sydney, Australia - Kingsford Smith Airport (SYD).
The best way is to compare flights to Illinois from leading comparison sites using our search engine dashboard.
We have currently found no direct flights to Illinois.
Here is the average weather forecast in Illinois by month:
• Jan: -0°C
• Feb: 2°C
• Mar: 8°C
• Apr: 15°C
• May: 21°C
• Jun: 27°C
• Jul: 29°C
• Aug: 28°C
• Sep: 24°C
• Oct: 17°C
• Nov: 9°C
• Dec: 2°C
The main airport in Illinois, O'Hare International Airport, is approximately 17 miles from downtown Chicago.
Typically, flights are cheapest to Illinois 2 months before departure.
Studies show flights to Illinois are typically cheaper on Tuesdays and Wednesdays.
-12.2 °C
Sat, 13 Dec 2025
Average Temperature
-0°C
Jan
2°C
Feb
8°C
Mar
15°C
Apr
21°C
May
27°C
Jun
29°C
Jul
28°C
Aug
24°C
Sep
17°C
Oct
9°C
Nov
2°C
Dec
Select a City Below to see the Cheapest Flights to Illinois:
Chicago, Illinois | Peoria, Illinois | Moline, Illinois | Springfield, Illinois | Marion, Illinois | Bloomington, Illinois
Sydney, Australia - Kingsford Smith Airport (SYD) to Illinois (CHI)
Distance:
9,235 miles (14,862 kilometres)
Average flight time (direct 21 hours 1 minute)
Brisbane, Australia - Brisbane International Airport (BNE) to Illinois (CHI)
Distance:
8,903 miles (14,329 kilometres)
Average flight time (direct 20 hours 17 minutes)
Melbourne, Australia - All Airports (MEL) to Illinois (CHI)
Distance:
9,666 miles (15,556 kilometres)
Average flight time (direct 21 hours 58 minutes)
Perth, Australia - Perth International Airport (PER) to Illinois (CHI)
Distance:
10,955 miles (17,630 kilometres)
Average flight time (direct 24 hours 50 minutes)
Cairns, Australia - Cairns International Airport (CNS) to Illinois (CHI)
Distance:
8,845 miles (14,234 kilometres)
Average flight time (direct 20 hours 9 minutes)
Adelaide, Australia - Adelaide International Airport (ADL) to Illinois (CHI)
Distance:
9,909 miles (15,948 kilometres)
Average flight time (direct 22 hours 31 minutes)
Darwin, Australia - Darwin International Airport (DRW) to Illinois (CHI)
Distance:
9,342 miles (15,035 kilometres)
Average flight time (direct 21 hours 15 minutes)
Gold Coast, Australia - Coolangatta Airport (OOL) to Illinois (CHI)
Distance:
8,913 miles (14,344 kilometres)
Average flight time (direct 20 hours 18 minutes)
Townsville, Australia - Townsville International Airport (TSV) to Illinois (CHI)
Distance:
8,898 miles (14,320 kilometres)
Average flight time (direct 20 hours 16 minutes)
Mount Isa, Australia - Mount Isa Airport (ISA) to Illinois (CHI)
Distance:
9,326 miles (15,009 kilometres)
Average flight time (direct 21 hours 13 minutes)
Kununurra, Australia - Kununurra Airport (KNX) to Illinois (CHI)
Distance:
9,612 miles (15,470 kilometres)
Average flight time (direct 21 hours 51 minutes)
Newcastle, Australia - Williamtown Metropolitan Area Airport (NTL) to Illinois (CHI)
Distance:
9,163 miles (14,747 kilometres)
Average flight time (direct 20 hours 51 minutes)
Mackay, Australia - Mackay Airport (MKY) to Illinois (CHI)
Distance:
8,857 miles (14,254 kilometres)
Average flight time (direct 20 hours 10 minutes)
Hobart, Australia - Hobart International Airport (HBA) to Illinois (CHI)
Distance:
9,661 miles (15,549 kilometres)
Average flight time (direct 21 hours 58 minutes)
Launceston, Australia - Launceston Airport (LST) to Illinois (CHI)
Distance:
9,647 miles (15,525 kilometres)
Average flight time (direct 21 hours 56 minutes)
Cloncurry, Australia - Cloncurry Airport (CNJ) to Illinois (CHI)
Distance:
9,276 miles (14,928 kilometres)
Average flight time (direct 21 hours 6 minutes)
Paraburdoo, Australia - Paraburdoo Airport (PBO) to Illinois (CHI)
Distance:
10,471 miles (16,852 kilometres)
Average flight time (direct 23 hours 46 minutes)
Karratha, Australia - Karratha Airport (KTA) to Illinois (CHI)
Distance:
10,383 miles (16,710 kilometres)
Average flight time (direct 23 hours 34 minutes)
Kalgoorlie-Boulder, Australia - Kalgoorlie-Boulder Airport (KGI) to Illinois (CHI)
Distance:
10,642 miles (17,126 kilometres)
Average flight time (direct 24 hours 8 minutes)
Learmonth, Australia - Learmonth Airport (LEA) to Illinois (CHI)
Distance:
10,573 miles (17,015 kilometres)
Average flight time (direct 23 hours 59 minutes)
Port Macquarie, Australia - Port Macquarie Airport (PQQ) to Illinois (CHI)
Distance:
9,064 miles (14,588 kilometres)
Average flight time (direct 20 hours 38 minutes)
Port Hedland, Australia - Port Hedland International Airport (PHE) to Illinois (CHI)
Distance:
10,289 miles (16,559 kilometres)
Average flight time (direct 23 hours 21 minutes)
Canberra, Australia - Canberra Airport (CBR) to Illinois (CHI)
Distance:
9,378 miles (15,092 kilometres)
Average flight time (direct 21 hours 20 minutes)
From Brisbane (BNE), Australia to Chicago, United States (ORD): $1,332
Depart: 29 Jan 2026 · Return: 04 Feb 2026 Price found 11 Dec 2025, 05:11
From Adelaide (ADL), Australia to Chicago, United States (ORD): $1,429
Depart: 03 Feb 2026 · Return: 17 Feb 2026 Price found 11 Dec 2025, 09:54
From Sydney (SYD), Australia to Chicago, United States (ORD): $1,514
Depart: 03 Jun 2026 · Return: 09 Jun 2026 Price found 09 Dec 2025, 23:47
From Perth (PER), Australia to Chicago, United States (ORD): $1,703
Depart: 19 Sep 2026 · Return: 15 Oct 2026 Price found 11 Dec 2025, 04:36
From Gold Coast (OOL), Australia to Chicago, United States (ORD): $1,763
Depart: 26 Jan 2026 · Return: 02 Feb 2026 Price found 12 Dec 2025, 09:22
From Canberra (CBR), Australia to Chicago, United States (ORD): $1,919
Depart: 26 Jan 2026 · Return: 02 Feb 2026 Price found 12 Dec 2025, 09:43
From Newcastle (NTL), Australia to Chicago, United States (ORD): $1,924
Depart: 26 Jan 2026 · Return: 02 Feb 2026 Price found 12 Dec 2025, 08:29
From Townsville (TSV), Australia to Chicago, United States (ORD): $2,083
Depart: 09 Oct 2026 · Return: 12 Oct 2026 Price found 11 Dec 2025, 16:17
From Cairns (CNS), Australia to Chicago, United States (ORD): $2,528
Depart: 27 Jun 2026 · Return: 18 Jul 2026 Price found 11 Dec 2025, 08:20
From Darwin (DRW), Australia to Chicago, United States (ORD): $3,172
Depart: 08 Oct 2026 · Return: 12 Oct 2026 Price found 11 Dec 2025, 20:59
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