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Cheap flights from Illinois to Sydney from $343

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Sydney departing on 9/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Illinois to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
3:45 pm - 12:45 amORD  Chicago O'Hare Intl-YQY Sydney
7h 00m1 stop Toronto Pearson Intl
Air Canada Logo
5:05 am - 11:21 amYQY  Sydney-ORD Chicago O'Hare Intl
8h 16m1 stop Toronto Pearson Intl
$742Air Canada
Wed, Sep 9 - Wed, Sep 16
Air Canada Logo
3:45 pm - 12:12 amORD  Chicago O'Hare Intl-YQY Sydney
6h 27m1 stop Toronto Pearson Intl
Air Canada Logo
5:05 am - 12:00 pmYQY  Sydney-ORD Chicago O'Hare Intl
8h 55m1 stop Toronto Pearson Intl
$743Air Canada
Wed, Sep 2 - Sun, Sep 6
Air Canada Logo
11:05 am - 12:45 amORD  Chicago O'Hare Intl-YQY Sydney
11h 40m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
5:05 am - 9:53 amYQY  Sydney-ORD Chicago O'Hare Intl
6h 48m1 stop Toronto Pearson Intl
$746Air Canada
Wed, Sep 9 - Wed, Sep 16
Air Canada Logo
11:05 am - 12:45 amORD  Chicago O'Hare Intl-YQY Sydney
11h 40m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
5:05 am - 2:52 pmYQY  Sydney-ORD Chicago O'Hare Intl
11h 47m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
$749Air Canada
Wed, Sep 9 - Wed, Sep 16
Air Canada Logo
5:00 am - 4:07 pmORD  Chicago O'Hare Intl-YQY Sydney
9h 07m2 stops Newark Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:05 am - 2:52 pmYQY  Sydney-ORD Chicago O'Hare Intl
11h 47m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
$766Air Canada
Thu, Sep 10 - Sun, Sep 13
Air Canada Logo
11:15 am - 12:45 amORD  Chicago O'Hare Intl-YQY Sydney
11h 30m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
5:05 am - 9:00 amYQY  Sydney-ORD Chicago O'Hare Intl
5h 55m1 stop Toronto Pearson Intl
$793Air Canada
Mon, Sep 28 - Mon, Oct 5
Air Canada Logo
3:45 pm - 12:45 amORD  Chicago O'Hare Intl-YQY Sydney
7h 00m1 stop Toronto Pearson Intl
Air Canada Logo
5:05 am - 9:00 amYQY  Sydney-ORD Chicago O'Hare Intl
5h 55m1 stop Toronto Pearson Intl
$794Air Canada
Mon, Sep 28 - Mon, Oct 5
Air Canada Logo
3:45 pm - 12:45 amORD  Chicago O'Hare Intl-YQY Sydney
7h 00m1 stop Toronto Pearson Intl
Air Canada Logo
5:05 am - 9:00 amYQY  Sydney-ORD Chicago O'Hare Intl
5h 55m1 stop Toronto Pearson Intl
$798Air Canada
Mon, Sep 28 - Mon, Oct 5
Air Canada Logo
3:45 pm - 12:45 amORD  Chicago O'Hare Intl-YQY Sydney
7h 00m1 stop Toronto Pearson Intl
Air Canada Logo
5:20 pm - 9:00 amYQY  Sydney-ORD Chicago O'Hare Intl
17h 40m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
$811Air Canada
Mon, Sep 28 - Mon, Oct 5
Air Canada Logo
11:15 am - 12:45 amORD  Chicago O'Hare Intl-YQY Sydney
11h 30m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
5:20 pm - 9:00 amYQY  Sydney-ORD Chicago O'Hare Intl
17h 40m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
$821Air Canada
Mon, Sep 28 - Mon, Oct 5

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Air Canada flights from Illinois to Sydney, Nova Scotia

Our best Air Canada deals on Illinois to Sydney, Nova Scotia flight tickets
Air Canada
Sep 7
ORD3:45 pmChicago O'Hare Intl
6h 27m
1 stop
YQY12:12 amSydney
Sep 14
YQY5:05 amSydney
5h 55m
1 stop
ORD9:00 amChicago O'Hare Intl
$742
Air Canada
Sep 2
ORD2:15 pmChicago O'Hare Intl
7h 57m
1 stop
YQY12:12 amSydney
Sep 6
YQY5:05 amSydney
8h 54m
2 stops
ORD11:59 amChicago O'Hare Intl
$743
Air Canada
Sep 9
ORD11:05 amChicago O'Hare Intl
11h 40m
2 stops
YQY12:45 amSydney
Sep 16
YQY5:05 amSydney
6h 48m
1 stop
ORD9:53 amChicago O'Hare Intl
$746

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Sydney, Nova Scotia 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 832,500 searches. Data last updated August 16, 2026.
Use the filters below to find and compare flights from Illinois to Sydney, Nova Scotia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSydney

ORD Chicago O'Hare Intl - YQY Sydney

ORDYQY

Chicago O'Hare Intl

Wed 9/9

3:45 pm-12:45 am

1 stop7h 00m

Sydney

Wed 9/16

5:05 am-11:21 am

1 stop8h 16m

$742

ChicagoSydney

ORD Chicago O'Hare Intl - YQY Sydney

ORDYQY

Chicago O'Hare Intl

Wed 9/2

3:45 pm-12:12 am

1 stop6h 27m

Sydney

Sun 9/6

5:05 am-12:00 pm

1 stop8h 55m

$743

ChicagoSydney

ORD Chicago O'Hare Intl - YQY Sydney

ORDYQY

Chicago O'Hare Intl

Wed 9/9

11:05 am-12:45 am

2 stops11h 40m

Sydney

Wed 9/16

5:05 am-9:53 am

1 stop6h 48m

$746

ChicagoSydney

ORD Chicago O'Hare Intl - YQY Sydney

ORDYQY

Chicago O'Hare Intl

Wed 9/9

11:05 am-12:45 am

2 stops11h 40m

Sydney

Wed 9/16

5:05 am-2:52 pm

2 stops11h 47m

$749

ChicagoSydney

ORD Chicago O'Hare Intl - YQY Sydney

ORDYQY

Chicago O'Hare Intl

Thu 9/10

5:00 am-4:07 pm

2 stops9h 07m

Sydney

Sun 9/13

5:05 am-2:52 pm

2 stops11h 47m

$766

ChicagoSydney

ORD Chicago O'Hare Intl - YQY Sydney

ORDYQY

Chicago O'Hare Intl

Mon 9/28

11:15 am-12:45 am

2 stops11h 30m

Sydney

Mon 10/5

5:05 am-9:00 am

1 stop5h 55m

$793
Quickest round-trip

ChicagoSydney

ORD Chicago O'Hare Intl - YQY Sydney

ORDYQY

Chicago O'Hare Intl

Mon 9/28

3:45 pm-12:45 am

1 stop7h 00m

Sydney

Mon 10/5

5:05 am-9:00 am

1 stop5h 55m

$794

ChicagoSydney

ORD Chicago O'Hare Intl - YQY Sydney

ORDYQY

Chicago O'Hare Intl

Mon 9/28

3:45 pm-12:45 am

1 stop7h 00m

Sydney

Mon 10/5

5:05 am-9:00 am

1 stop5h 55m

$798

ChicagoSydney

ORD Chicago O'Hare Intl - YQY Sydney

ORDYQY

Chicago O'Hare Intl

Mon 9/28

3:45 pm-12:45 am

1 stop7h 00m

Sydney

Mon 10/5

5:20 pm-9:00 am

2 stops17h 40m

$811

ChicagoSydney

ORD Chicago O'Hare Intl - YQY Sydney

ORDYQY

Chicago O'Hare Intl

Mon 9/28

11:15 am-12:45 am

2 stops11h 30m

Sydney

Mon 10/5

5:20 pm-9:00 am

2 stops17h 40m

$821

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Illinois to Sydney, Nova Scotia

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 airline that flies from Illinois to Sydney?

Air Canada is the most popular carrier operating from Illinois to Sydney

Cheap Illinois to Sydney, Nova Scotia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Sydney, Nova Scotia

Fastest flight time

7h 00m

Direct flights

None
The fastest flight from Illinois to Sydney, Nova Scotia takes 7h 00m
There are no direct flights from Illinois to Sydney, Nova Scotia. There are no popular flight routes from Illinois to Sydney, Nova Scotia.
Search flight deals

Frequently asked questions about flying from Illinois to Sydney, Nova Scotia

  • When did momondo last update prices for flights from Illinois to Sydney Airport?

    Prices for flights from Illinois to Sydney Airport refresh daily.

  • How old do you have to be to fly from Illinois to Sydney Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Sydney Airport.

  • What documentation or ID do you need to fly to Sydney Airport?

    The travel and health documents you'll need for your trip to Sydney Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sydney Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Cheticamp
Inverness

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Sydney?

Finding the right flight to Sydney from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.

Can I find flights from Illinois to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Sydney from Illinois 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.

An easier way to manage your Sydney, Nova Scotia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to Canada

Airports servicing Nova Scotia

Halifax Intl Airport