$857 Find Cheap Flights from Illinois to Sydney – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Sydney departing on 2/11. 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

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Flight Deals

Cheap Flights from Illinois to Sydney

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Illinois to Sydney 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 Illinois to Sydney

Fri, 13 Nov - Thu, 26 Nov
Qantas Airways Logo
14:54 - 17:40
STL
-
SYD
33h 46m
2 stops
Qantas Airways Logo
11:20 - 23:45
SYD
-
STL
29h 25m
1 stop
$1,544Qantas Airways
Tue, 13 Oct - Wed, 18 Nov
Air Canada Logo
12:10 - 08:20
STL
-
SYD
28h 10m
2 stops
Air Canada Logo
11:20 - 15:26
SYD
-
STL
45h 06m
2 stops
$1,597Air Canada
Wed, 23 Sep - Wed, 7 Oct
Air Canada Logo
08:55 - 07:20
STL
-
SYD
31h 25m
2 stops
Air Canada Logo
10:20 - 18:41
SYD
-
STL
24h 21m
2 stops
$1,597Air Canada
Mon, 7 Sep - Mon, 14 Sep
Air Canada Logo
12:10 - 07:20
STL
-
SYD
52h 10m
3 stops
Air Canada Logo
09:20 - 14:00
SYD
-
STL
43h 40m
2 stops
$1,608Air Canada
Wed, 23 Sep - Wed, 7 Oct
Air Canada Logo
08:55 - 07:20
STL
-
SYD
31h 25m
2 stops
Air Canada Logo
10:20 - 18:41
SYD
-
STL
48h 21m
3 stops
$1,608Air Canada
Tue, 13 Oct - Wed, 18 Nov
Air Canada Logo
12:10 - 08:20
STL
-
SYD
28h 10m
2 stops
Air Canada Logo
11:20 - 15:26
SYD
-
STL
45h 06m
1 stop
$1,611Air Canada
Wed, 23 Sep - Wed, 7 Oct
Air Canada Logo
08:55 - 07:20
STL
-
SYD
31h 25m
2 stops
Air Canada Logo
10:20 - 20:00
SYD
-
STL
25h 40m
1 stop
$1,618Air Canada
Mon, 7 Sep - Mon, 14 Sep
Air Canada Logo
12:10 - 07:20
STL
-
SYD
52h 10m
2 stops
Air Canada Logo
09:20 - 14:00
SYD
-
STL
43h 40m
2 stops
$1,622Air Canada
Mon, 7 Sep - Mon, 14 Sep
Air Canada Logo
12:10 - 07:20
STL
-
SYD
52h 10m
2 stops
Air Canada Logo
09:20 - 14:00
SYD
-
STL
43h 40m
1 stop
$1,622Air Canada
Sun, 8 Nov - Thu, 12 Nov
Qantas Airways Logo
16:43 - 06:55
PIA
-
SYD
21h 12m
1 stop
Qantas Airways Logo
19:15 - 15:48
SYD
-
PIA
37h 33m
2 stops
$1,638Qantas Airways
Useful Info

Good to know

Low season

September

Cheapest flight

$857
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly (7% more expensive on average)
Flight from Chicago O'Hare Airport to Sydney

FAQs for booking flights from Illinois to Sydney

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

    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 Illinois to Sydney.

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

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

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

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

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

    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 to Sydney from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Wollongong
Parramatta
Leura
Katoomba
Terrigal
Penrith
Manly
Cronulla
Coogee
Randwick
Lithgow
Bondi Beach
Swansea
Newport
Charlestown
Brooklyn

Everything you need to know for your flight to Sydney

Information on the airport you'll fly into in Sydney

Sydney (SYD)