$1,086 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 22/3. 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

Tue, 14 Jul - Tue, 15 Sep
Multiple Airlines Logo
20:00 - 14:41
ADL
-
ORD
33h 11m
2 stops
Multiple Airlines Logo
15:40 - 11:50
ORD
-
ADL
29h 40m
2 stops
$1,488Multiple Airlines
Tue, 14 Jul - Tue, 15 Sep
Air Canada Logo
20:00 - 14:41
ADL
-
ORD
33h 11m
2 stops
Air Canada Logo
16:35 - 13:55
ORD
-
ADL
30h 50m
3 stops
$1,495Air Canada
Sat, 2 May - Sat, 9 May
Multiple Airlines Logo
06:00 - 23:27
ADL
-
ORD
31h 57m
2 stops
Multiple Airlines Logo
15:00 - 10:20
ORD
-
ADL
28h 50m
2 stops
$1,749Multiple Airlines
Tue, 14 Jul - Tue, 15 Sep
Qantas Airways Logo
06:00 - 16:43
ADL
-
ORD
25h 13m
2 stops
Qantas Airways Logo
15:52 - 09:25
ORD
-
ADL
27h 03m
2 stops
$1,760Qantas Airways
Tue, 14 Jul - Tue, 15 Sep
Multiple Airlines Logo
12:40 - 05:02
ADL
-
ORD
30h 52m
3 stops
Multiple Airlines Logo
10:00 - 09:25
ORD
-
ADL
32h 55m
2 stops
$1,832Multiple Airlines
Sat, 18 Apr - Fri, 24 Apr
Qantas Airways Logo
11:50 - 23:59
ADL
-
ORD
26h 39m
2 stops
Qantas Airways Logo
15:07 - 09:25
ORD
-
ADL
27h 48m
2 stops
$1,887Qantas Airways
Sat, 2 May - Sat, 9 May
Multiple Airlines Logo
06:00 - 19:57
ADL
-
ORD
28h 27m
3 stops
Multiple Airlines Logo
16:30 - 09:25
ORD
-
ADL
26h 25m
2 stops
$1,922Multiple Airlines
Tue, 14 Jul - Tue, 15 Sep
Air Canada Logo
20:00 - 22:05
ADL
-
ORD
40h 35m
3 stops
Air Canada Logo
12:59 - 11:50
ORD
-
ADL
32h 21m
3 stops
$2,008Air Canada
Sat, 18 Apr - Fri, 24 Apr
Air Canada Logo
19:00 - 22:03
ADL
-
ORD
41h 33m
3 stops
Air Canada Logo
15:40 - 15:55
ORD
-
ADL
33h 45m
2 stops
$2,111Air Canada
Sat, 2 May - Sat, 9 May
Qatar Airways Logo
21:40 - 15:05
ADL
-
ORD
31h 55m
1 stop
Qatar Airways Logo
13:45 - 15:50
ORD
-
ADL
35h 35m
2 stops
$2,543Qatar Airways
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 Qantas Airways ($1,887) and Qatar Airways ($2,543).

Good to know

Low seasonMarch
Cheapest flight$1,377
Best time to beat the crowds (30% 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 1006 reviews
7.7Boarding
7.4Comfort
7.2Entertainment
7.0Food
8.1Crew
Airline reviews

Our boarding and flight was very good. However when we landed and pulled in to the gate it took 55 minutes for the jet bridge to be positioned next to the aircraft. That caused us to miss our ground transportation and it caused us unnecessary last minute transit planning and expense. Our flight was AA1733 on March 17, 2026

4.0 OkayMike, Mar 2026
DFW - MKE
Read more Qantas Airways reviews

Our boarding and flight was very good. However when we landed and pulled in to the gate it took 55 minutes for the jet bridge to be positioned next to the aircraft. That caused us to miss our ground transportation and it caused us unnecessary last minute transit planning and expense. Our flight was AA1733 on March 17, 2026

We booked with Qantas instead of Delta and we instead flew on American Airlines. American is not our favorite to go on. No leg room and the width of seats are a joke. Your are packed like sardines on American flights.

My experience was great overall. Tanya was particularly friendly and helpful the entire trip. I was very pleased with her customer service skills. The plane was an older aircraft but the entire way was comfortable with barely any turbulence at all. Qantas should speed up its fleet renovation. Totally recommend using this airline.

When I originally booked this flight, I was expecting to travel on Qantas. When the itinerary changed and the long-haul segment was operated by American Airlines, we were disappointed but remained open-minded. Unfortunately, the overall service experience fell far short of expectations. This was a long-haul international flight. Getting up periodically to use the restroom or stretch is inevitable, especially on flights of this duration. However, each time we stood up, we felt as though we were inconveniencing the crew. The tone and body language often suggested that we were in the way or disrupting something simply by moving about the cabin. As a result, I avoided getting up as often as I needed to and was physically very sore upon arrival. Meal service was similarly impersonal. The options were presented in single words “beef or veggie,” “pasta or beef” without any description of what was actually being served. There was little engagement or courtesy beyond that. Even simple expressions of gratitude were often not acknowledged. I am accustomed to no-frills travel and do not expect luxury. What was disappointing was not the absence of extras, but the absence of basic warmth and professionalism. On a long-haul international flight, small moments of courtesy and humanity make a significant difference. In this case, the experience felt transactional and dismissive rather than welcoming. I hope this feedback is taken constructively, as there is a meaningful difference between efficient service and indifferent service.

Qantas is always subpar beyond comfy chairs for a domestic flight

an hour late, then had to disembark on back stairs and take 4 flights up to get to main airport. No warning, and difficulty for those with canes and poor knees.

Flight arrived late with no one to help over 30 people rebook. I slept at the airport.

Business seats not as comfortable or private as most competitors (e.g. Qantas was outstanding), and movie selection was much more limited than Qantas or United has been recently

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.

My ticket did not exist when I got to the airport. I had to book another flight and was still charged by Kayak

Got denied my flight was told on Google that Air Canada was supposed to book me a flight back home because I never was able to go to my destination. They did not help me whatsoever. I had to book a whole new flight for that reason I would write this is zero

The plane was delayed an hour. Heard from other passengers that the Vancouver connection to SFO was never on-time.

My experience was good with United too But only not so good thing was that at Calgary airport I was not given lounge access despite of flying business. Aspire lounge denied it to me, which was unfair I feel

We left over 2 hours late and they didn't even give us a complimentary snack, when getting to the desk I asked if I could be put in a row with only 1 other person or an empt y one I was told the flight was full when the last two rows were empty. All around over it

they were super helpful. Agents at the desk got me on an earlier flight and I was able to get home several hours earlier.

This is a great non-stop YVR-MIA. Very comfortable plane, and no transfer through a city that gets major winter weather!

Terrible…. Reported missing luggage’s with injectable meds that needed refrigeration. Yet, delivery could not be expedited. Luggage’s were delivered 5 days after arrival. The meds were useless as ice pack had melted. So disappointed!!!

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.

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

Information on your arrival and departure airports