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$833 Find cheap flights to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Australia to Illinois departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
Sun 25/8
Sun 1/9

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Best Illinois Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours

Chicago
Chicago2 stops$1,488

Good to know

Low season

January

High season

June

Cheapest flight

$833
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly (7% more expensive on average)
Flight from Sydney to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How long is the flight to Illinois?

    An average direct flight from Australia to Illinois takes 30h 22m, covering a distance of 24117 km. The most popular route is Melbourne - Chicago with an average flight time of 29h 40m.

  • What is the cheapest flight to Illinois?

    The cheapest ticket to Illinois from Australia found in the last 72 hours was $1,290. The most popular route is Melbourne to Chicago O'Hare Intl and the cheapest round-trip airline ticket found on this route in the last 72 hours was $1,290.

  • What are the most popular destinations in Illinois?

    Based on KAYAK flight searches, the most popular destination is Chicago (81% of total searches to Illinois). The next most popular destinations are St. Louis (11%) and Bloomington (8%).Searches for flights to Moline (0.6%) are also popular.

  • How does KAYAK’s flight Price Forecast tool help me choose the right time to buy?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a given destination and date is likely to change within 7 days, so travellers know whether to wait or book now.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Illinois flight deals.

Top 5 airlines flying to Illinois

Need help choosing which airline to fly with from Australia to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Singapore AirlinesOverall score based on 1367 reviews
8.4Boarding
8.0Comfort
8.1Entertainment
7.7Food
8.6Crew
Airline reviews

Singapore Airlines from Mumbai was late, we were rerouted to Copenhagen and then to Los Angeles. As senior citizens, we should have been given a hotel voucher for a night and fly out the next day. I hope Singapore Airlines should give us a credit in good faith if they want us to fly with them. I doubt it, but you never know.

2.0 MediocreAnonymous, July 2024SIN - LAX
Read more about Singapore Airlines reviews

Singapore Airlines from Mumbai was late, we were rerouted to Copenhagen and then to Los Angeles. As senior citizens, we should have been given a hotel voucher for a night and fly out the next day. I hope Singapore Airlines should give us a credit in good faith if they want us to fly with them. I doubt it, but you never know.

I had to change a flight date and it cost me $800.00 dollars. In the past, if there was room on the flight(which there was), Singapore Airlines simply re-booked me. This might have occurred because the office in Bali where I could interface with a human face to face is now closed since COVID. I naively figured the ability to change my flight into my decision to go with Singapore Airlines as it does cost a bit more. I will still fly on them as they are superior to the other carriers by a fairly large margin, especially for my needs.

I was traveling with my 3 minor children, one leg I was seated two aisles behind them. On the longest leg I would have preferred sitting across the aisle from them, not behind. My youngest is 4yos. I understand airplane seating configurations are not the airlines problem but seating the one adult with a reservation apart from the minors was very difficult.

Awesome! Was impressed with the hospitality and the thoughtful services. The cabin attendants were superb.

Crews were great but food not much selection just all tailored for Asian passengers.

plus: service and personal assistance minus: online check-in did not work

My overall experience with Singapore Airlines is great. Will definitely fly Singapore airline again.

Good flight. The food was served a bit late, hence a hurry to finish before landing. Excellent crew and service

Great to have actual hot tastey meal on a flight. Well done

Seating cramped; close to toilet, foul smelling and noisy, very unhygienic and disease risk Free and paid Wi-Fi NOT accessible at all - misleading advertising Very expensive sunglasses disappeared from back seat pouch. Coffee disgusting and cold

The employees are very nice and good. The delay due to the aircraft is not a good thing. Planning for such problems should be an easy task.

Wanted different plane design with an additional bathroom at the back of the plane.

The crew staffs are very nice. The temperature is too low.

Unfortunately I ended up beside a person who seemed to have been eating rotten corpses before landing because his breath smelled like Calcutta Sewage mixed with vodka and undigested eggs. Even wearing a mask that smell was so permeating that I couldn't breathe for the whole duration of the flight. I understand this is not CATHAY's fault but nevertheless I as a passenger had to endure this and there wasn't any way to fix it

There is very little in the title" Premium" in the Economy experience with Cathay, Melbourne to Hong Kong. The seats are uncomfortable and the cabin with outdated 1990's decor and trim. The food service was sloppy and the leg room providing little to no advantage over regular economy seating. Infact, the Sunday flight was not fill occupancy and I would have done better saving the significant additional costs for the PREMIUM ticket and taken advantage of the seating. If you are a regular premium economy traveler of EMIRATES expecting the same experience on CATHAY, you will be disappointed. Emirates far superior.

Bad experience. Departure time delayed from 1610 to 1740. After the flight was pushed back, pilot said there was a technical issue on the aircraft and we couldn’t take off. Delayed another hour to solve it.

The flight was cancelled. I wasn't informed where to check in, how and when. It wasn't easy to get in contact with Cathay service representative, and they were not very helpful... The staff on the airport - Air Canada (I assume) were the most helpful, kind efficient, patient... Thank you for all your help and care, for your patience, for your professionalism!!!

Great, the flight attendants were very friendly and the food was also good.

The first economy rows have remote space in the seat which eats in the seating space. The seats are also smaller compared to other airlines.

Very comfortable Prem economy seats for a long haul flight. Had a problem with the tv that the crew fixed so was great!

Plane a little late departing, but not an issue. The pilots humour when he said “I will try to make up some time…. I know a few short cuts to Adelaide” made the passengers chuckle. This is what makes Qantas “Australian”.

I have never had a problem with flying Qantas, so this flight was the same as any other.

After British Airways cancelled my London to Sydney and Virgin Australia refused to refund, there was no ways I would try Virgin Australia again, so it was Qantas - what a good flight experience. So much easier to get off an international flight and get a local flight without having to add extra amounts for baggage

The flight was delayed by 1.5 hours and most of the flights bags were not on the flight. Have also had no communication from QANTAS

I was thrilled with the bottle of water, blanket, pillow, earphones, and little packet of toothbrush, toothpaste, earplugs. I was very satisfied with the meals and snacks and drinks. I alao was very grateful to have a seat that backs up against the lavatory, as it made it very easy to get to the bathroom without being jumped in line, as so often happens in the airplane. Of course that was just a random strike of luck, but it really made a difference.

Food was great. Customer Service not so much! Flight Delays.

The plane was delayed about 3 hours so anything else is immaterial

It was so hot on the plane mixed with being quite turbulent and a rough landing. We all felt very nauseous for hours afterwards. Crew were lovely though.

For a long haul, the flight was good. We left an hour late due to a seat in business class not working. But they made up time and we still got in on time or even early thanks to tailwinds. The crew was friendly. The meals were okay, nothing special.

Internet on internation flights is a basic comodity. Very disappointed. Same entertainment that has been on for the past year. Update your content for frequent flyers

This was the most horrific experience we have ever had. I would advise people to steer clear of this airline at all costs.

Online checkin was a nightmare. They kept popping me into Chinese language site which I can't understand.

The flight take-off was delayed which was fine but the staff seemed pretty over their jobs. The seats are very uncomfortable and the food was pretty average. Overall is was okay.

Note that food has to be purchased in flight. No free food. And no entertainment in flight. So I’ve treated these two items as okay which, in this case, means neutral/not applicable.

My Dad needed assistance to board the plane. The Jetstar staff were excellent with him and made the experience a lot easier😁

No food taken so can't rate also no entertainment so can't rate.

Would be better if can provide small free snacks on a long flight

Boarding was easy and unstressful, though the early "final call" was a bit off-putting. The crew were pleasant, and the seats were comfortable. The prices for food and drink were reasonable, apart from tea and coffee, where simple percolated coffee was charged at espresso prices. Deboarding was OK, though some Jetstar passengers appear to have a bad habit of pushing forward from their assigned rows, making it more difficult to get out for passengers that have paid a premium to sit up-front. Jetstar might want to look to address this to stop it from spreading.

I was allocated an exit row seat and was told to move so it could be given away to someone who had purchased two extra legroom seats and one regular seat but wanted the three to sit together. I was also charged for entertainment after booking but before checking in, and the ground crew couldn't do anything about refunding it. When the whole plane was given access to the entertainment as an apology for the flight being four hours late, I was told they couldn't do anything about that either, so I was charged for something I didn't want even though it would have been free anyway

I got to the airport earlier than I expected, and they let me change to an earlier flight with no trouble.

The cosmetic condition was pretty run down. The carpets were badly worn out. Even the paint on the wings was chipped and peeled! Looks like they are running these 787s to the ground..

WiFi didn’t work on both sectors so made killing time harder - planes clean modern and good flight crew - would do again if WiFi works

6hrs fly they dont give you a glass of water from seoul to singapore need to buy drink and food plus they charge for bag on international fly is always Free 1 bag from seoul to singapore is Not a local fly you are traveling true asia same story from singapore to Bali no water drink after payment for bag drink cost more the regular airline Well never use this company again we use regular company like Delta korea japan China and even scoot parent company Singapore Air

We had 2 attempts to land at Singapore Changing during a thunderstorm. Everything was delayed by 1 hour plus.

Boarding was not accordingly after front seat, bmf then back seat. This delayed for at least 40mins or more. The staff at Jakarta can do better. Is chaos at the entry to board the plane. This tarnished Scoot reputation when everyone was talking about it.

The crew was not customer oriented at all, even confrontational . The aircraft needs more attention to detail as far as comfort, and the 1 hour sitting at the gate with no air is inexcusable

We flew on the 787 Dreamliner direct to main gate at KLIA2, quick entry via eGate and on the train 41mins after touchdown. Go well SCOOT

Was on scoot plus. The only good thing about the flight was the spacious seats. Tables and armrests were extremely dirty Food: bad Entertainment: non existent Wifi: unable to connect, then was painfully slow that we couldn’t even send messages Good thing we had a night flight, so we just slept throughout.

Not clear why boarding passes could only be issued at the counter and not through the kiosk. I had already check-in on the web, so waiting to obtain a boarding pass 1.5 hours before the actual flight defeats the purpose of early web check-in.

no charging point. food offering is limited and very much on the budget line. Overall is not satisfying for such a price and duration of flight.

Book Cheap Illinois Plane Tickets

Recent return flight deals

17/10Thu
2 stopsAir Canada
37h 38mSYD-ORD
31/10Thu
2 stopsAir Canada
31h 50mORD-SYD
$1,488
17/10Thu
3 stopsAir Canada
37h 38mSYD-ORD
31/10Thu
2 stopsAir Canada
31h 50mORD-SYD
$1,498
23/12Mon
1 stopQantas Airways
39h 03mSYD-ORD
10/1Fri
1 stopQantas Airways
42h 05mORD-SYD
$1,731
22/12Sun
1 stopQantas Airways
23h 05mSYD-ORD
11/1Sat
1 stopQantas Airways
23h 25mORD-SYD
$1,776
28/10Mon
1 stopCathay Pacific
29h 00mMEL-ORD
8/11Fri
1 stopCathay Pacific
28h 50mORD-MEL
$2,172
4/11Mon
1 stopCathay Pacific
45h 10mMEL-ORD
8/11Fri
1 stopCathay Pacific
28h 50mORD-MEL
$2,194
31/10Thu
2 stopsSingapore Airlines
56h 13mMEL-ORD
9/11Sat
2 stopsSingapore Airlines
45h 18mORD-MEL
$2,453
14/11Thu
2 stopsSingapore Airlines
33h 13mMEL-ORD
24/12Tue
2 stopsSingapore Airlines
46h 55mORD-MEL
$2,968
28/9Sat
2 stopsEmirates
52h 20mMEL-ORD
13/10Sun
1 stopEmirates
34h 35mORD-MEL
$3,221
28/9Sat
2 stopsEmirates
52h 20mMEL-ORD
13/10Sun
2 stopsEmirates
41h 50mORD-MEL
$3,232

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8/9Sun
3 stops
49h 11mSYD-ORD
$833
9/9Mon
2 stops
34h 57mSYD-ORD
$840
30/9Mon
1 stopCathay Pacific
29h 40mMEL-ORD
$1,311
21/10Mon
1 stopCathay Pacific
29h 40mMEL-ORD
$1,316
8/1Wed
1 stopQantas Airways
25h 25mSYD-ORD
$1,889
15/10Tue
3 stopsSingapore Airlines
41h 10mSYD-ORD
$1,948
15/10Tue
3 stopsSingapore Airlines
41h 10mSYD-ORD
$1,968
4/1Sat
1 stopQantas Airways
29h 20mSYD-ORD
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directSpirit Airlines
4h 07mLAX-ORD
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directSpirit Airlines
4h 20mORD-LAX
$150
15/8Thu
multi-stopSpirit Airlines
12h 03mDFW-ORD
19/8Mon
directSpirit Airlines
2h 29mORD-DFW
$154
5/9Thu
multi-stopJetBlue
6h 00mBOS-ORD
5/9Thu
directJetBlue
2h 32mORD-BOS
$173
31/8Sat
directDelta
3h 07mBOS-ORD
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directDelta
2h 26mORD-BOS
$179
1/9Sun
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7h 13mBOS-ORD
6/9Fri
directJetBlue
2h 32mORD-BOS
$180
27/8Tue
directDelta
3h 01mBOS-ORD
3/9Tue
directDelta
2h 36mORD-BOS
$194
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4h 05mLAX-ORD
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4h 28mORD-LAX
$287
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directAmerican Airlines
2h 25mDFW-ORD
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2h 33mORD-DFW
$319
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5h 46mBOS-ORD
6/9Fri
directUnited Airlines
2h 29mORD-BOS
$335
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5h 14mEWR-ORD
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directUnited Airlines
2h 22mORD-EWR
$350

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Last minute flight, train and bus deals

30/7Tue
multi-stopUnited Airlines
35h 05mSYD-ORD
31/8Sat
multi-stopUnited Airlines
42h 55mORD-SYD
$1,679
30/7Tue
multi-stopAir Canada
41h 42mSYD-ORD
31/8Sat
multi-stopAir Canada
34h 20mORD-SYD
$1,695
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30h 04mSYD-ORD
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multi-stopAmerican Airlines
22h 25mORD-SYD
$1,716
26/7Fri
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19h 21mBNE-ORD
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multi-stopAir Canada
31h 15mORD-BNE
$1,771
29/7Mon
multi-stopQantas Airways
24h 20mSYD-ORD
30/8Fri
multi-stopQantas Airways
21h 41mORD-SYD
$2,087
26/7Fri
multi-stopAmerican Airlines
21h 17mMEL-ORD
3/8Sat
multi-stopAmerican Airlines
32h 26mORD-MEL
$2,098
29/7Mon
multi-stopQantas Airways
23h 13mBNE-ORD
19/8Mon
multi-stopQantas Airways
28h 05mORD-BNE
$2,381
28/7Sun
multi-stopEmirates
50h 18mBNE-ORD
19/8Mon
multi-stopEmirates
42h 40mORD-BNE
$4,242
30/7Tue
multi-stopEmirates
52h 50mBNE-ORD
21/8Wed
multi-stopEmirates
42h 40mORD-BNE
$4,536
29/7Mon
multi-stopSingapore Airlines
41h 58mBNE-ORD
19/8Mon
multi-stopSingapore Airlines
42h 20mORD-BNE
$5,917

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Flights to Illinois