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Cheap flights from Chicago to Sydney from $644

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Sydney departing on 6/2. 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 Chicago to Sydney

Cheap return flights

These are some of the best return flight deals from Chicago to Sydney that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Chicago to Sydney.

Cheap last-minute flights

Planning a quick getaway from Chicago to Sydney? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Sydney, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Chicago to Sydney

Find recent round-trip train or bus tickets from Chicago to Sydney.

All round-trip flight deals to Sydney

The cheapest plane tickets to Sydney found on KAYAK recently.
07:00 - 19:15ORD-SYD
45h 15m2 stops
20:55 - 05:03SYD-ORD
47h 08m2 stops
$1,113ANA
Find Deal
Sun, 11 May - Sun, 25 May
15:16 - 09:00ORD-SYD
25h 44m1 stop
11:15 - 15:55SYD-ORD
20h 40m1 stop
$1,298Qantas Airways
Find Deal
Mon, 10 Mar - Wed, 19 Mar
15:16 - 09:00ORD-SYD
25h 44m1 stop
11:15 - 23:59SYD-ORD
28h 44m1 stop
$1,301Qantas Airways
Find Deal
Sun, 9 Mar - Mon, 17 Mar
20:25 - 09:00ORD-SYD
43h 35m1 stop
17:25 - 13:07SYD-ORD
36h 42m2 stops
$1,310
Find Deal
Fri, 17 Jan - Thu, 30 Jan
07:00 - 19:15ORD-SYD
45h 15m2 stops
17:35 - 23:28SYD-ORD
20h 53m1 stop
$1,317
Find Deal
Sun, 11 May - Sun, 25 May
09:50 - 09:00ORD-SYD
30h 10m1 stop
11:15 - 15:55SYD-ORD
20h 40m1 stop
$1,360American Airlines
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Tue, 25 Feb - Tue, 18 Mar
07:18 - 09:00ORD-SYD
32h 42m1 stop
11:15 - 05:04SYD-ORD
33h 49m1 stop
$1,373American Airlines
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Thu, 27 Feb - Sun, 16 Mar
16:35 - 12:30ORD-SYD
26h 55m2 stops
14:00 - 19:18SYD-ORD
22h 18m2 stops
$1,910Fiji Airways
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Sat, 8 Feb - Thu, 20 Feb
16:55 - 12:30ORD-SYD
26h 35m2 stops
14:30 - 21:07SYD-ORD
22h 37m2 stops
$1,929Fiji Airways
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Sat, 1 Mar - Sat, 15 Mar
11:35 - 09:35ORD-SYD
29h 00m2 stops
10:20 - 14:39SYD-ORD
20h 19m1 stop
$1,980Air Canada
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Tue, 25 Feb - Wed, 19 Mar
08:40 - 09:00ORD-SYD
31h 20m1 stop
$644Qantas Airways
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Thu, 6 Feb
08:40 - 09:00ORD-SYD
31h 20m1 stop
$650Qantas Airways
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Sun, 2 Feb
15:20 - 07:25ORD-SYD
23h 05m1 stop
Wed, 29 Jan
13:32 - 09:00ORD-SYD
26h 28m2 stops
$686American Airlines
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Thu, 6 Feb
15:25 - 09:00ORD-SYD
24h 35m2 stops
$732American Airlines
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Mon, 3 Feb
08:15 - 07:25MDW-SYD
30h 10m2 stops
$1,046
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Tue, 4 Feb
07:20 - 08:20ORD-SYD
33h 00m2 stops
$1,137Air Canada
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Tue, 1 Apr
08:40 - 07:20ORD-SYD
31h 40m2 stops
$1,139Air Canada
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Sun, 1 Jun
12:55 - 09:05ORD-SYD
27h 10m1 stop
$1,453United Airlines
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Tue, 21 Jan
20:25 - 09:15ORD-SYD
43h 50m1 stop
$1,487United Airlines
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Sun, 19 Jan
09:00 - 09:00ORD-SYD
31h 00m1 stop
11:15 - 19:44SYD-ORD
25h 29m1 stop
$1,347Qantas Airways
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Tue, 24 Dec - Thu, 26 Dec
20:25 - 09:00ORD-SYD
43h 35m1 stop
11:15 - 17:29SYD-ORD
23h 14m1 stop
$1,349Qantas Airways
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Mon, 23 Dec - Mon, 30 Dec
20:25 - 09:00ORD-SYD
43h 35m1 stop
17:50 - 19:44SYD-ORD
42h 54m3 stops
$2,413
Find Deal
Mon, 23 Dec - Mon, 30 Dec
20:25 - 09:35ORD-SYD
44h 10m2 stops
11:20 - 08:05SYD-ORD
37h 45m2 stops
$2,453Air Canada
Find Deal
Mon, 23 Dec - Mon, 30 Dec
20:25 - 09:35ORD-SYD
44h 10m2 stops
16:00 - 12:43SYD-ORD
37h 43m1 stop
$2,517Air Canada
Find Deal
Mon, 23 Dec - Sat, 28 Dec
20:25 - 09:00ORD-SYD
43h 35m1 stop
11:20 - 14:45SYD-ORD
44h 25m3 stops
$2,635
Find Deal
Sun, 22 Dec - Wed, 22 Jan
18:25 - 09:05ORD-SYD
21h 40m1 stop
16:15 - 12:42SYD-ORD
37h 27m1 stop
$2,773United Airlines
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Thu, 26 Dec - Sun, 12 Jan
06:15 - 09:05ORD-SYD
33h 50m1 stop
16:15 - 23:19SYD-ORD
24h 04m1 stop
$2,797United Airlines
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Thu, 26 Dec - Sun, 12 Jan
21:45 - 09:05ORD-SYD
42h 20m1 stop
11:45 - 19:49SYD-ORD
25h 04m2 stops
$4,154Air New Zealand
Find Deal
Mon, 23 Dec - Sun, 29 Dec
21:45 - 09:05ORD-SYD
42h 20m1 stop
09:55 - 21:14SYD-ORD
28h 19m2 stops
$4,391Air New Zealand
Find Deal
Mon, 23 Dec - Wed, 1 Jan

Qantas Airways flights from Chicago to Sydney

Our best Qantas Airways deals on Chicago to Sydney flight tickets
Qantas Airways
10 Mar
ORD15:16Chicago O'Hare Intl
25h 44m
1 stop
SYD09:00Sydney Kingsford Smith
19 Mar
SYD11:15Sydney Kingsford Smith
20h 40m
1 stop
ORD15:55Chicago O'Hare Intl
Qantas Airways
9 Mar
ORD15:16Chicago O'Hare Intl
25h 44m
1 stop
SYD09:00Sydney Kingsford Smith
17 Mar
SYD11:15Sydney Kingsford Smith
28h 44m
1 stop
ORD23:59Chicago O'Hare Intl
Qantas Airways
20 Feb
ORD15:17Chicago O'Hare Intl
24h 43m
1 stop
SYD09:00Sydney Kingsford Smith
5 Mar
SYD11:15Sydney Kingsford Smith
21h 32m
1 stop
ORD15:47Chicago O'Hare Intl

Fiji Airways flights from Chicago to Sydney

Our best Fiji Airways deals on Chicago to Sydney flight tickets
Fiji Airways
8 Feb
ORD16:35Chicago O'Hare Intl
26h 55m
2 stops
SYD12:30Sydney Kingsford Smith
20 Feb
SYD14:00Sydney Kingsford Smith
22h 18m
2 stops
ORD19:18Chicago O'Hare Intl
Fiji Airways
1 Mar
ORD16:55Chicago O'Hare Intl
26h 35m
2 stops
SYD12:30Sydney Kingsford Smith
15 Mar
SYD14:30Sydney Kingsford Smith
22h 37m
2 stops
ORD21:07Chicago O'Hare Intl
Fiji Airways
8 Mar
ORD15:02Chicago O'Hare Intl
28h 28m
2 stops
SYD12:30Sydney Kingsford Smith
15 Mar
SYD14:30Sydney Kingsford Smith
22h 37m
2 stops
ORD21:07Chicago O'Hare Intl

See travel insights to Sydney from

How to get the cheapest flight ticket from Chicago to Sydney

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 typical price of a round-trip flight between Chicago and Sydney?

What is the cheapest month to fly to Sydney?

The month of March is, on average, the cheapest month to fly to Sydney from Chicago, with most prices found around $1,548. If you aren’t able to travel to Sydney during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,666.

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

Our data shows that Sunday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,891. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,597.

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

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from Chicago to Sydney in the afternoon for as low as $2,212. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are $3,382 on average. Flights to Sydney from Chicago at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

We recommend purchasing flights from Chicago to Sydney 37 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to Sydney for $1,991. However, in the past 72 hours, people saw flights from Chicago for as low as $2,261.

Can stopping save me money on Chicago to Sydney flights?

You could potentially save up to 6% on your flight if you consider stops on a Chicago to Sydney flight.

How have Chicago to Sydney flight prices changed over time?

As of December 2024, prices for Chicago to Sydney flights are approximately 53% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Chicago to Sydney (CHI to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Sydney

Best price found

$644

Fastest flight time

21h 10m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from Chicago in the past 72 hours is $644. The best return flight deal from Chicago to Sydney found on momondo in the last 72 hours is $1,113.
The fastest flight from Chicago to Sydney takes 21h 10m
There are no direct flights from Chicago to Sydney. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Sydney Kingsford Smith Airport and Chicago Midway Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

  • How far is Chicago to Sydney Kingsford Smith by plane?

    Chicago and Sydney Kingsford Smith are 14866.2 km apart from one another. A reasonable flight in good conditions will take 21h 10m.

  • When did momondo last update prices for flights from Chicago to Sydney Kingsford Smith Airport?

    Prices for flights from Chicago to Sydney Kingsford Smith Airport were last updated today.

  • How many operators does momondo search for flights from Chicago to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Chicago to Sydney Kingsford Smith Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago to Sydney Kingsford Smith Airport.

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

    The necessary travel and health documents for your Sydney Kingsford Smith Airport 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.

  • What is the most popular airline from Chicago to Sydney?


Best airlines flying from Chicago to Sydney

Compare and see reviews for airlines that fly from Chicago to Sydney with momondo
Airline
Rating
Free cancellation
Price
Qantas AirwaysPriceFrom $1,460Free cancellationRating
7.5
807 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $1,547Free cancellationRating
7.0
8,403 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,807Free cancellationRating
7.4
9,035 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Chicago to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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

Yes. momondo enables you to select and highlight flights to Sydney from Chicago with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Chicago.

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

If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from Chicago and alert you when they change.


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