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Cheap flights from New South Wales to Illinois from $809

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from New South Wales to Illinois departing on 6/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from New South Wales to Illinois

Cheap return flights

Air Canada Logo
10:20 - 15:29SYD-STL
45h 09m2 stops
Air Canada Logo
16:05 - 08:35STL-SYD
48h 30m2 stops
$1,213Air Canada
Find Deal
Thu, 12 Mar - Mon, 16 Mar
Air Canada Logo
10:20 - 15:29SYD-STL
45h 09m2 stops
Air Canada Logo
16:05 - 08:35STL-SYD
48h 30m2 stops
$1,216Air Canada
Find Deal
Thu, 12 Mar - Mon, 16 Mar
American Airlines Logo
11:20 - 23:51SYD-STL
29h 31m2 stops
American Airlines Logo
06:55 - 09:00STL-SYD
33h 05m1 stop
$1,249American Airlines
Find Deal
Tue, 25 Nov - Mon, 8 Dec
American Airlines Logo
11:20 - 23:42SYD-STL
29h 22m1 stop
American Airlines Logo
16:01 - 09:00STL-SYD
23h 59m2 stops
$1,252American Airlines
Find Deal
Tue, 2 Dec - Tue, 9 Dec
United Airlines Logo
11:50 - 18:47SYD-STL
23h 57m1 stop
United Airlines Logo
16:45 - 07:00STL-SYD
21h 15m1 stop
$1,275United Airlines
Find Deal
Mon, 24 Nov - Sat, 6 Dec
Delta Logo
10:40 - 23:23SYD-STL
29h 43m2 stops
Delta Logo
19:56 - 08:30STL-SYD
43h 34m2 stops
$1,276Delta
Find Deal
Mon, 24 Nov - Wed, 10 Dec
United Airlines Logo
12:10 - 15:40SYD-STL
44h 30m2 stops
United Airlines Logo
16:37 - 09:05STL-SYD
23h 28m2 stops
$1,279United Airlines
Find Deal
Mon, 1 Dec - Tue, 9 Dec
Qantas Airways Logo
09:10 - 15:51SYD-ORD
21h 41m1 stop
Qantas Airways Logo
18:03 - 09:00ORD-SYD
21h 57m1 stop
$1,416Qantas Airways
Find Deal
Tue, 30 Sep - Wed, 12 Nov
Qantas Airways Logo
09:10 - 17:56SYD-ORD
23h 46m1 stop
Qantas Airways Logo
13:39 - 09:00ORD-SYD
26h 21m1 stop
$1,491Qantas Airways
Find Deal
Fri, 3 Oct - Mon, 22 Dec
Delta Logo
09:25 - 17:35SYD-MDW
23h 10m2 stops
Delta Logo
06:00 - 08:30MDW-SYD
33h 30m2 stops
$1,500Delta
Find Deal
Tue, 30 Sep - Wed, 12 Nov

Qantas Airways flights from New South Wales to Illinois

Our best Qantas Airways deals on New South Wales to Illinois flight tickets
Qantas Airways
30 Sept
SYD09:10Sydney Kingsford Smith
21h 41m
1 stop
ORD15:51Chicago O'Hare Intl
12 Nov
ORD18:03Chicago O'Hare Intl
21h 57m
1 stop
SYD09:00Sydney Kingsford Smith
$1,416
Find similar
Qantas Airways
3 Oct
SYD09:10Sydney Kingsford Smith
23h 46m
1 stop
ORD17:56Chicago O'Hare Intl
22 Dec
ORD13:39Chicago O'Hare Intl
26h 21m
1 stop
SYD09:00Sydney Kingsford Smith
$1,491
Find similar
Qantas Airways
25 Nov
SYD14:05Sydney Kingsford Smith
19h 35m
1 stop
STL16:40Lambert-St Louis
10 Dec
STL13:20Lambert-St Louis
24h 35m
1 stop
SYD06:55Sydney Kingsford Smith
$1,547
Find similar

Air Canada flights from New South Wales to Illinois

Our best Air Canada deals on New South Wales to Illinois flight tickets
Air Canada
12 Mar
SYD10:20Sydney Kingsford Smith
45h 09m
2 stops
STL15:29Lambert-St Louis
16 Mar
STL16:05Lambert-St Louis
48h 30m
2 stops
SYD08:35Sydney Kingsford Smith
$1,213
Find similar
Air Canada
12 Mar
SYD10:20Sydney Kingsford Smith
45h 09m
2 stops
STL15:29Lambert-St Louis
16 Mar
STL16:05Lambert-St Louis
48h 30m
2 stops
SYD08:35Sydney Kingsford Smith
$1,216
Find similar
Air Canada
4 Dec
SYD16:00Sydney Kingsford Smith
61h 39m
2 stops
STL12:39Lambert-St Louis
8 Dec
STL16:05Lambert-St Louis
48h 30m
2 stops
SYD09:35Sydney Kingsford Smith
$1,257
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from New South Wales to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 78,305 searches. Data last updated 14 September 2025.
Use the filters below to find and compare flights from New South Wales to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

10:20-15:29

2 stops45h 09m

Lambert-St Louis

Mon 16/3

16:05-08:35

2 stops48h 30m

$1,213

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

10:20-15:29

2 stops45h 09m

Lambert-St Louis

Mon 16/3

16:05-08:35

2 stops48h 30m

$1,216

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 25/11

11:20-23:51

2 stops29h 31m

Lambert-St Louis

Mon 8/12

06:55-09:00

1 stop33h 05m

$1,249

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 2/12

11:20-23:42

1 stop29h 22m

Lambert-St Louis

Tue 9/12

16:01-09:00

2 stops23h 59m

$1,252

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 24/11

11:50-18:47

1 stop23h 57m

Lambert-St Louis

Sat 6/12

16:45-07:00

1 stop21h 15m

$1,275

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 24/11

10:40-23:23

2 stops29h 43m

Lambert-St Louis

Wed 10/12

19:56-08:30

2 stops43h 34m

$1,276

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 1/12

12:10-15:40

2 stops44h 30m

Lambert-St Louis

Tue 9/12

16:37-09:05

2 stops23h 28m

$1,279

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 30/9

09:10-15:51

1 stop21h 41m

Chicago O'Hare Intl

Wed 12/11

18:03-09:00

1 stop21h 57m

$1,416

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 3/10

09:10-17:56

1 stop23h 46m

Chicago O'Hare Intl

Mon 22/12

13:39-09:00

1 stop26h 21m

$1,491

SydneyChicago

SYD - MDW

SYDMDW

Sydney Kingsford Smith

Tue 30/9

09:25-17:35

2 stops23h 10m

Chicago Midway

Wed 12/11

06:00-08:30

2 stops33h 30m

$1,500

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Illinois from

How to get the cheapest flight ticket from New South Wales to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

In general, March is the cheapest month to fly from New South Wales to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,114. If you’re not able to fly to Illinois in March, then February is your next best option. Flight prices from New South Wales to Illinois during February average around $1,118.

What is the cheapest day to depart on your flight to Illinois?

On average, the least expensive day to fly to Illinois from New South Wales is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,688. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,987. These prices are subject to change though, so be sure to set up a Price Alert for flights to Illinois.

What is the cheapest time of day to depart on your flight to Illinois?

According to our data, the cheapest time of day to fly to Illinois is in the afternoon. momondo users have found flights departing from New South Wales to Illinois in the afternoon for as low as $1,685. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Illinois are more costly in the morning, with an average ticket price of $1,864. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from New South Wales when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $1,533 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from New South Wales for as low as $1,166 on momondo.

Can stopping save me money on New South Wales to Illinois flights?

You could potentially save up to 34% on your flight if you consider stops on a New South Wales to Illinois flight.

Cheap New South Wales to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from New South Wales to Illinois

Direct flights

None
There are no direct flights from New South Wales to Illinois. There are no popular flight routes from New South Wales to Illinois.
Search flight deals

  • When did momondo last update prices for flights from New South Wales to Illinois?

    Prices for flights from New South Wales to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from New South Wales to Illinois?

  • How old do you have to be to fly from New South Wales to Illinois?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from New South Wales to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from New South Wales to Illinois

Compare and see reviews for airlines that fly from New South Wales to Illinois with momondo
Airline
Rating
Free cancellation
Price
Qantas AirwaysPriceFrom $990Free cancellationRating
7.5
905 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $1,172Free cancellationRating
7.2
10,000 reviews
Search American Airlines flights
Air CanadaPriceFrom $1,240Free cancellationRating
7.1
10,000 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,532Free cancellationRating
8.0
505 reviews
Search Air New Zealand flights
ANAPriceFrom $1,579Free cancellationRating
8.4
961 reviews
Search ANA flights
United AirlinesPriceFrom $1,631Free cancellationRating
7.4
8,934 reviews
Search United Airlines flights
Virgin AustraliaPriceFrom $1,732Free cancellationRating
7.5
416 reviews
Search Virgin Australia flights

Why use momondo?

Why should I use momondo to find a flight deal from New South Wales to Illinois?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from New South Wales to Illinois . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from New South Wales to Illinois with flexible booking policies on momondo?

All flight searches from New South Wales to Illinois on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from New South Wales to Illinois?

Once all potential New South Wales to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from New South Wales to Illinois right now. Can momondo alert me if prices change?

Price alerts on flights to Illinois from New South Wales are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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