$675 Find Cheap Flights from Adelaide 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 Adelaide to Illinois departing on 14/3. 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

Wed, 18 Mar - Tue, 21 Apr
Multiple Airlines Logo
18:55 - 14:41
ADL
-
ORD
35h 16m
2 stops
Multiple Airlines Logo
15:40 - 11:55
ORD
-
ADL
29h 45m
2 stops
$1,419Multiple Airlines
Thu, 12 Mar - Sat, 21 Mar
Air Canada Logo
06:10 - 14:41
ADL
-
ORD
24h 01m
2 stops
Air Canada Logo
15:35 - 19:10
ORD
-
ADL
36h 05m
2 stops
$1,468Air Canada
Wed, 18 Mar - Tue, 21 Apr
Air Canada Logo
18:55 - 14:41
ADL
-
ORD
35h 16m
2 stops
Air Canada Logo
10:52 - 11:50
ORD
-
ADL
34h 28m
3 stops
$1,486Air Canada
Wed, 18 Mar - Wed, 25 Mar
Multiple Airlines Logo
10:10 - 20:40
ADL
-
ORD
26h 00m
2 stops
Multiple Airlines Logo
14:58 - 09:35
ORD
-
ADL
27h 07m
2 stops
$1,503Multiple Airlines
Fri, 13 Mar - Fri, 20 Mar
Air Canada Logo
06:10 - 14:41
ADL
-
ORD
24h 01m
2 stops
Air Canada Logo
15:35 - 20:45
ORD
-
ADL
37h 40m
2 stops
$1,541Air Canada
Thu, 12 Mar - Sat, 21 Mar
Air Canada Logo
21:45 - 14:41
ADL
-
ORD
32h 26m
2 stops
Air Canada Logo
15:35 - 19:10
ORD
-
ADL
36h 05m
2 stops
$1,546Air Canada
Thu, 12 Mar - Sat, 21 Mar
Air Canada Logo
06:10 - 14:41
ADL
-
ORD
24h 01m
2 stops
Air Canada Logo
14:00 - 19:10
ORD
-
ADL
37h 40m
3 stops
$1,586Air Canada
Fri, 13 Mar - Fri, 20 Mar
Air Canada Logo
06:10 - 14:41
ADL
-
ORD
24h 01m
2 stops
Air Canada Logo
20:40 - 19:10
ORD
-
ADL
55h 00m
3 stops
$1,596Air Canada
Thu, 12 Feb - Mon, 16 Feb
Air Canada Logo
06:00 - 14:41
ADL
-
ORD
25h 11m
2 stops
Air Canada Logo
15:35 - 22:30
ORD
-
ADL
38h 25m
2 stops
$1,618Air Canada
Thu, 12 Mar - Sat, 21 Mar
Multiple Airlines Logo
06:25 - 14:53
ADL
-
ORD
23h 58m
2 stops
Multiple Airlines Logo
14:58 - 09:35
ORD
-
ADL
27h 07m
2 stops
$1,622Multiple Airlines
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.

Which airlines provide the cheapest flights from Adelaide to Illinois?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest return tickets from Adelaide to Illinois were found on Air Canada ($1,541) and United Airlines ($1,596).

Good to know

Low seasonMarch
Cheapest flight$675
Best time to beat the crowds (33% less expensive on average)
Most popular time to fly and prices are also 25% 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.

Reviews of the top 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.
7.5
Qantas AirwaysOverall score based on 981 reviews
7.7Boarding
7.0Food
8.2Crew
7.2Entertainment
7.5Comfort
Airline reviews

Hard to move and get out of my seat when the passenger in front is in recline position.

2.0 MediocreAnonymous, Jan 2026
MEL - LAX
Read more Qantas Airways reviews

Hard to move and get out of my seat when the passenger in front is in recline position.

It was a good flight and no complaints. It just wasn't anything that was better than any other flight.

The crew were wonderful - if only the customers were as well behaved as the attendants!! Ha ha! If you could just talk to God and ask for less turbulence next time.... Juuuuust kidding....

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.

Air Canada’s problems are not staff related by and large, no. The problem is tiny jets between the U.S. and Canada - yes, believe it or not they are still “international” (just ask our own Mango Maniac in power in the U.S.). The little aisle is compounded by a design flaw of a “dog leg” starting at seat 12. Woe be unto you if you sit here as passengers and attendants do not have sufficient room to not hit you in the face with backpacks. One thing I will say very positively about Air Canada is you still provide pillows and blankets on transcontinental flights to all, not just the elites. Your tiny improperly designed jets are also a problem flying city to city within Canada also. One can only say you remind us of a “Jet Blue” or “Spirit” experience. Also your luggage space is downright Byzantine! We will endeavor to avoid you and use other U.S. carriers, albeit charging more.

Terrible canceled flight and lost my luggage. Flew me to Halifax. Tgat flight was delayed, had to spend night in airport chair.

Better entertainment & food options more may be adding chicken option or on vegetarian side good quality pasta

My seat was not comfortable. Flight was smooth. Regretfully we had two delays before takeoff

Amazing service, with enthusiastic crew members, and some breathtaking views of Vancouver. No IFE though, as it is only a 1 hour flight on a regional Turboprop jet.

They are very proactive and made our boarding easy and always notified us about any changes well in advance.

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

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

Information on your arrival and departure airports