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Cheap flights from Chicago to Sydney from $345

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 3/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chicago to Sydney

Cheap round-trip flights

These are some of the best round-trip 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 layovers.

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.
7:46 pm - 7:15 pmORD-SYD
32h 29m2 stops
8:55 pm - 4:59 amSYD-ORD
47h 04m2 stops
$692ANA
Find Deal
Mon, May 12 - Sat, May 17
7:13 pm - 9:00 amORD-SYD
21h 47m1 stop
11:15 am - 3:55 pmSYD-ORD
20h 40m1 stop
$816Qantas Airways
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Mon, Mar 10 - Mon, Mar 24
9:45 am - 7:25 amORD-SYD
28h 40m1 stop
5:25 pm - 4:56 amSYD-ORD
28h 31m1 stop
$836Alaska Airlines
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Sun, Feb 9 - Mon, Feb 24
1:30 pm - 6:35 amORD-SYD
24h 05m1 stop
5:25 pm - 5:00 amSYD-ORD
28h 35m1 stop
$843American Airlines
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Wed, Feb 19 - Wed, Feb 26
3:22 pm - 6:35 amORD-SYD
22h 13m1 stop
5:35 pm - 5:58 amSYD-ORD
27h 23m1 stop
$844American Airlines
Find Deal
Tue, Feb 11 - Sun, Jun 22
11:35 am - 8:20 amORD-SYD
28h 45m2 stops
9:20 am - 2:39 pmSYD-ORD
20h 19m1 stop
$1,241Air Canada
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Tue, Apr 1 - Wed, Apr 16
7:20 am - 8:20 amORD-SYD
33h 00m3 stops
9:20 am - 2:39 pmSYD-ORD
20h 19m1 stop
$1,246Air Canada
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Tue, Apr 1 - Wed, Apr 16
7:00 pm - 7:45 pmORD-SYD
31h 45m2 stops
9:40 pm - 5:00 pmSYD-ORD
36h 20m2 stops
$1,305Alaska Airlines
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Tue, Feb 18 - Fri, Feb 28
2:00 pm - 6:35 amMDW-SYD
25h 35m2 stops
9:25 am - 6:03 pmSYD-MDW
23h 38m2 stops
$1,419Delta
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Tue, Jun 3 - Tue, Jun 17
1:26 pm - 8:35 amMDW-SYD
26h 09m2 stops
2:15 pm - 10:20 pmSYD-MDW
25h 05m2 stops
$1,420Delta
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Tue, Feb 11 - Tue, Feb 25
7:00 am - 8:15 pmORD-SYD
45h 15m2 stops
$345ANA
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Mon, Mar 10
8:40 am - 9:00 amORD-SYD
31h 20m1 stop
$402Qantas Airways
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Sun, Feb 2
10:00 am - 7:25 amORD-SYD
28h 25m2 stops
$413American Airlines
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Sat, Feb 1
3:01 pm - 6:35 amORD-SYD
23h 34m2 stops
$417American Airlines
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Fri, Mar 28
7:20 am - 8:20 amORD-SYD
33h 00m2 stops
$711Air Canada
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Tue, Apr 1
7:20 am - 8:20 amORD-SYD
33h 00m3 stops
$716Air Canada
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Tue, Apr 1
3:35 pm - 9:05 amORD-SYD
24h 30m1 stop
$900United Airlines
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Wed, Jan 29
6:00 am - 6:50 amMDW-SYD
31h 50m2 stops
$904Delta
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Sun, Feb 2
12:55 pm - 9:15 amORD-SYD
27h 20m2 stops
$907United Airlines
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Tue, Jan 21
1:26 pm - 8:35 amMDW-SYD
26h 09m2 stops
$912Delta
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Tue, Jan 28
8:25 pm - 9:00 amORD-SYD
43h 35m1 stop
11:15 am - 3:59 pmSYD-ORD
21h 44m1 stop
$991Qantas Airways
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Sun, Dec 22 - Wed, Jan 22
8:25 pm - 9:00 amORD-SYD
43h 35m1 stop
11:15 am - 11:10 pmSYD-ORD
28h 55m1 stop
$1,115Qantas Airways
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Sun, Dec 22 - Fri, Jan 3
2:58 pm - 7:25 amORD-SYD
23h 27m1 stop
5:25 pm - 11:57 pmSYD-ORD
23h 32m1 stop
$1,411American Airlines
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Fri, Dec 20 - Sun, Feb 16
2:05 pm - 9:35 amORD-SYD
26h 30m2 stops
11:20 am - 7:32 pmSYD-ORD
25h 12m2 stops
$1,792Air Canada
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Tue, Dec 24 - Tue, Dec 31
2:58 pm - 7:25 amORD-SYD
23h 27m1 stop
11:50 am - 9:19 pmSYD-ORD
26h 29m1 stop
$1,869American Airlines
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Tue, Dec 24 - Tue, Dec 31
10:35 am - 9:15 amORD-SYD
29h 40m1 stop
12:10 pm - 11:19 pmSYD-ORD
28h 09m1 stop
$1,932United Airlines
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Tue, Dec 24 - Sat, Jan 11
12:45 pm - 9:15 amORD-SYD
27h 30m1 stop
12:10 pm - 7:31 pmSYD-ORD
24h 21m2 stops
$1,936United Airlines
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Tue, Dec 24 - Sat, Jan 11
7:20 am - 9:35 amORD-SYD
33h 15m3 stops
11:20 am - 7:32 pmSYD-ORD
25h 12m2 stops
$1,949Air Canada
Find Deal
Tue, Dec 24 - Tue, Dec 31
1:55 pm - 9:05 amORD-SYD
26h 10m1 stop
11:45 am - 11:59 pmSYD-ORD
29h 14m2 stops
$2,763Air New Zealand
Find Deal
Sun, Dec 22 - Tue, Dec 24
6:20 pm - 9:15 amORD-SYD
21h 55m1 stop
1:55 pm - 5:03 amSYD-ORD
32h 08m2 stops
$2,775Air New Zealand
Find Deal
Mon, Dec 23 - Wed, Dec 25

Qantas Airways flights from Chicago to Sydney

Our best Qantas Airways deals on Chicago to Sydney flight tickets
Qantas Airways
Mar 10
ORD7:13 pmChicago O'Hare Intl
21h 47m
1 stop
SYD9:00 amSydney Kingsford Smith
Mar 24
SYD11:15 amSydney Kingsford Smith
20h 40m
1 stop
ORD3:55 pmChicago O'Hare Intl
Qantas Airways
Feb 7
ORD5:40 pmChicago O'Hare Intl
22h 20m
1 stop
SYD9:00 amSydney Kingsford Smith
Mar 3
SYD11:15 amSydney Kingsford Smith
25h 23m
1 stop
ORD7:38 pmChicago O'Hare Intl
Qantas Airways
May 10
ORD6:50 pmChicago O'Hare Intl
21h 15m
1 stop
SYD7:05 amSydney Kingsford Smith
May 17
SYD9:10 amSydney Kingsford Smith
29h 18m
1 stop
ORD11:28 pmChicago O'Hare Intl

ANA flights from Chicago to Sydney

Our best ANA deals on Chicago to Sydney flight tickets
ANA
May 12
ORD7:46 pmChicago O'Hare Intl
32h 29m
2 stops
SYD7:15 pmSydney Kingsford Smith
May 17
SYD8:55 pmSydney Kingsford Smith
47h 04m
2 stops
ORD4:59 amChicago O'Hare Intl
ANA
May 10
ORD7:15 amChicago O'Hare Intl
45h 00m
2 stops
SYD7:15 pmSydney Kingsford Smith
May 17
SYD8:55 pmSydney Kingsford Smith
47h 04m
2 stops
ORD4:59 amChicago O'Hare Intl
ANA
May 10
ORD7:15 amChicago O'Hare Intl
45h 00m
2 stops
SYD7:15 pmSydney Kingsford Smith
May 17
SYD8:55 pmSydney Kingsford Smith
47h 04m
2 stops
ORD4:59 amChicago 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?

In general, March is the cheapest month to fly from Chicago to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $966. If you are unable to visit Sydney during the month of March, then departing from Chicago during the month February is also very affordable. Most momondo users find prices during this month for around $1,040.

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

The cheapest day to depart from Chicago to Sydney is on a Saturday when prices can be found for as low as $1,166. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,391.

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 morning. momondo users have found flights departing from Chicago to Sydney in the morning for as low as $1,224. 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 Sydney are more costly in the evening, with an average ticket price of $1,412. Departure times in the evening 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 Sydney?

The ideal time to book your flight to Sydney is 37 days in advance when prices tend to average $1,243. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Chicago for as low as $881 on momondo.

Can stopping save me money on Chicago to Sydney flights?

You could potentially save up to 14% 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 round-trip 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

$345

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 $345. The best round-trip flight deal from Chicago to Sydney found on momondo in the last 72 hours is $692.
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?

    There are 9237.5 mi between Chicago and Sydney Kingsford Smith. By plane, this route typically takes 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 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 Chicago to Sydney Kingsford Smith Airport.

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

    The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable 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
American AirlinesPriceFrom $842Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Qantas AirwaysPriceFrom $851Free CancellationRating
7.5
809 reviews
Search Qantas Airways flights
DeltaPriceFrom $851Free CancellationRating
8.0
8,600 reviews
Search Delta flights
United AirlinesPriceFrom $916Free CancellationRating
7.4
9,048 reviews
Search United Airlines flights
Air CanadaPriceFrom $956Free CancellationRating
7.0
8,391 reviews
Search Air Canada flights
Cathay PacificPriceFrom $1,138Free CancellationRating
7.6
839 reviews
Search Cathay Pacific flights
Air New ZealandPriceFrom $1,197Free CancellationRating
7.9
496 reviews
Search Air New Zealand flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to Sydney for 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 for Chicago to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Chicago to Sydney flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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