$1,722 Find Cheap Flights from Adelaide to Illinois

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Adelaide to Illinois departing on 20/12. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Adelaide to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Adelaide to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Adelaide to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Adelaide to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Adelaide to Illinois

Tue, 27 Jan - Tue, 3 Feb
United Airlines Logo
08:30 - 23:14
ADL
-
ORD
31h 14m2 stops
United Airlines Logo
12:45 - 14:10
ORD
-
ADL
32h 55m2 stops
$1,872United Airlines
Thu, 29 Jan - Thu, 5 Feb
United Airlines Logo
07:15 - 18:52
ADL
-
ORD
28h 07m2 stops
United Airlines Logo
16:10 - 09:30
ORD
-
ADL
24h 50m2 stops
$1,916United Airlines
Tue, 27 Jan - Tue, 3 Feb
Air Canada Logo
19:55 - 14:41
ADL
-
ORD
35h 16m2 stops
Air Canada Logo
11:15 - 19:10
ORD
-
ADL
39h 25m3 stops
$1,950Air Canada
Tue, 27 Jan - Tue, 3 Feb
Air Canada Logo
06:00 - 19:45
ADL
-
ORD
30h 15m3 stops
Air Canada Logo
13:13 - 19:10
ORD
-
ADL
37h 27m3 stops
$1,961Air Canada
Thu, 29 Jan - Thu, 5 Feb
Air Canada Logo
06:10 - 14:41
ADL
-
ORD
25h 01m2 stops
Air Canada Logo
14:00 - 13:55
ORD
-
ADL
31h 25m3 stops
$2,144Air Canada
Thu, 29 Jan - Thu, 5 Feb
Air Canada Logo
06:00 - 13:01
ADL
-
ORD
47h 31m3 stops
Air Canada Logo
10:00 - 16:10
ORD
-
ADL
37h 40m3 stops
$2,222Air Canada
Thu, 5 Feb - Mon, 9 Feb
Air Canada Logo
06:00 - 15:10
ADL
-
ORD
49h 40m3 stops
Air Canada Logo
10:00 - 19:10
ORD
-
ADL
40h 40m3 stops
$2,233Air Canada
Thu, 5 Feb - Mon, 9 Feb
Air Canada Logo
06:10 - 14:41
ADL
-
ORD
25h 01m2 stops
Air Canada Logo
10:00 - 19:10
ORD
-
ADL
40h 40m3 stops
$2,281Air Canada
Thu, 5 Feb - Mon, 9 Feb
Air Canada Logo
06:10 - 14:41
ADL
-
ORD
25h 01m2 stops
Air Canada Logo
10:00 - 19:10
ORD
-
ADL
40h 40m3 stops
$2,282Air Canada
Thu, 5 Feb - Mon, 9 Feb
Air Canada Logo
06:10 - 14:41
ADL
-
ORD
25h 01m2 stops
Air Canada Logo
15:35 - 22:30
ORD
-
ADL
38h 25m2 stops
$2,330Air Canada
Booking Insights

KAYAK's insights & trends for Adelaide to Illinois flights

Get data-powered insights and trends into flights from Adelaide to Illinois to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest month to fly from Adelaide to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Adelaide to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Adelaide to Illinois is March, when tickets cost $1,423 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is $2,503 and $2,341 respectively.

Good to know

Low seasonMarch
Cheapest flight$1,722
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly and prices are also 22% lower on average.
Flight from Adelaide to Chicago

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Adelaide to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Adelaide to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Adelaide to Illinois?

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

  • What is the Hacker Fare option on flights from Adelaide to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Adelaide to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Adelaide to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Adelaide to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the evening, when retur flights cost $2,192 on average. Morning departures are around 1% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally at night, which is peak travel time and where the average cost of a ticket is $2,399.

Reviews of the top 3 airlines flying from Adelaide to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Adelaide to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Adelaide 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.
7.6
Virgin AustraliaOverall score based on 428 reviews
7.5Comfort
8.2Crew
7.7Boarding
6.4Food
6.4Entertainment
Airline reviews

It was with Link Airways and the Saab 340 jet was noisy and little comfort.

6.0 GoodElio, Dec 2025
SYD - CBR
Read more Virgin Australia reviews

It was with Link Airways and the Saab 340 jet was noisy and little comfort.

They didn’t sent my luggage I got it 24 hours later

Plane was late and they wouldn’t check our bags through to Tokyo

Overall experience was good but what really impressed me the most was the care the flight attendants took of a sick passenger who was sitting in front of me. The flight attendants would come and check on her quite regularly providing her support and comfort. Brilliant service!

Only answered OK and poor as there was no entertainment and I didnt have any food

4.5 hr international flight. We got a glass of water. Ranks up there with Ryan Air, Easy Jet, Spirit and Frontier. Expected better.

Gluten free options less explicit on business class, but great service

Very good… seems the virgin staff particularly in the lounge and in flight exceeded expectations.

I liked everything about the experience but would have liked some free snacks!

Crew was great but flight was delayed almost three hours due to a technical issue and we had to go back to the terminal and wait for another one.

Flight was canceled. I was not alerted. It was only kayak that alerted me

Flight was 2.5 hours late leaving. We spent 50 minutes of that sitting on the plane with no explanation. They did reduce the time in the air so we arrived a little less late which was something. The cheese and crackers were okay but the wine was terrible.

Excellent as always, I won't fly to Australia, and back to the US on any other airline. The flight crew is always top notch, and have a way to make one feel extra special. Thank you for your service, I would rate Qantas Airways a 10+.

Basic airline, aircraft and service. AA gets you from point A to B. My flight was delayed by 2 hours too.

No internet on flight, which makes log travels really hard.

Not great. The inflight entertainment was all on an app, and I did not want to watch a film on my phone. Also, the range of options of films was limited.

My flight from Dallas to Sydney was cancelled. My entire trip was rerouted to include the following: Hartford to Washington DC Washington DC to JFK JFK to Auckland Auckland to Christchurch I paid for an aisle seat on the flight to Auckland and was asked if I would take a window seat to accommodate a family. The agent at the podium failed to mention that the family had a 3 month old baby and that a bassinet would be used during the 16 hour flight. The only way I could get out of my seat was to crawl under the bassinet of the sleeping baby. I think it is wrong that I was no given the choice to sit in another seat, that the agent knew what she was doing and chose to not properly disclose my seating arrangement. Terrible treatment.

they ran out of fruit for breakfast and so I just had a yogurt instead. other than that the flight was good

by the time they got to our row, they were out of some of the food options. games and movies were great but maybe more game options like tetris or pac man would be great

A few more inches of legroom is all i ask

My seat was covered in vomit and I will be reaching out to Air Canada

It's kindof ridiculous that your system is even asking me about this since my flight was canceled and I wasn't rescheduled.

3 hr delay at the gate while they were doing maintenance. Next time, do not board passengers while maintenance is being performed

Digital check in is very poor with air canada compaired to other airlines

Baggage delayed we had to catch our cruise without any clothes 😒

Air Canada Rouge is great. Toronto Airport is the usual nightmare

Good but need to be better with the flight times.

The staff could not have been any friendlier. Lots of usb ports on our aircraft.

The staff was great and made the long trip easy peasy!

Air Canada cancelled our flight and reschedule it 26 hours later that completely interrupted my family's long waited Japan trip, it wasn't due to natural reason such as weather but under the company's control. On the day we wasted 9 hours of our time from 6am to 3pm, including a few hours in the customer counter waiting for supervisor to handle our rescheduling. When we came to the counter for rebooking help there were at least 4 employees on the counter but we were told they were not trained to handle customer rebooking, we were also told the supervisor could come 10:30 to handle our rebooking, but she showed up more than one hour later, the end result was exactly the same so the few hours we spent waiting for her was completely wasted; We already prepaid hotel and all the tickets for the our stay in Tokyo so all of the cost for the first day is completed wasted; The $80 meal voucher issues was far less than our financial loss due to the financial cancellation, and it was not surprisingly invalid (as Your company screw up everything possible along the flight), the vouchers were supposed to last 72 hours, when we tried to used it at our lounge next day less than 24 hours from its issuing at a designated restaurant, the worker there couldn't scan the vouchers after multiple tries on all 4 vouchers issued, so we had to pay the food from our own money; For the two return flights they were also full of unfortunate events that caused bad experience and further delay and waste of our time, both flights departed late and the last leg had another significant delay of more than half an hour after touchdown, the gate was for some reason not available so we waited more than half an hour, when we got out of plane it was almost one hour later than the supposed arrival time; The gate you arranged is the farthest in Vancouver airport, also was the luggage pickup location in Seattle airport; We also called customer service for rescheduling help and after a long time wait (more than an hour) we got a call back but the CS representative was equally clueless and unhelpful. Other than a fatal crash, your company couldn't do anything right and provided the worst service possible among the tons of flights we have taken in our lives.

Everything you need to know for your flight from Adelaide to Illinois

Information on your arrival and departure airports