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Cheap flights from Chicago O'Hare Intl Airport to Sydney from $643

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 O'Hare Intl Airport 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 O'Hare Intl Airport to Sydney

Cheap return flights

These are some of the best return flight deals from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Sydney.

Cheap last-minute flights

Planning a quick getaway from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Sydney

Find recent round-trip train or bus tickets from Chicago O'Hare Intl Airport 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
$1,110ANA
Find Deal
Sun, 11 May - Sun, 25 May
07:00 - 19:15ORD-SYD
45h 15m2 stops
20:55 - 05:03SYD-ORD
47h 08m2 stops
$1,111ANA
Find Deal
Sun, 11 May - Sun, 25 May
07:00 - 19:15ORD-SYD
45h 15m2 stops
20:55 - 04:59SYD-ORD
47h 04m2 stops
$1,116ANA
Find Deal
Sun, 11 May - Sun, 18 May
18:50 - 07:05ORD-SYD
21h 15m1 stop
09:10 - 19:38SYD-ORD
25h 28m1 stop
$1,294Qantas Airways
Find Deal
Wed, 14 May - Wed, 21 May
19:13 - 09:00ORD-SYD
21h 47m1 stop
11:15 - 15:55SYD-ORD
20h 40m1 stop
$1,297Qantas Airways
Find Deal
Mon, 10 Mar - Wed, 26 Mar
07:00 - 19:15ORD-SYD
45h 15m2 stops
17:35 - 23:28SYD-ORD
20h 53m1 stop
$1,306
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Sun, 11 May - Sun, 18 May
07:00 - 19:15ORD-SYD
45h 15m2 stops
17:35 - 23:28SYD-ORD
20h 53m1 stop
$1,314
Find Deal
Sun, 11 May - Sun, 25 May
15:00 - 06:35ORD-SYD
24h 35m1 stop
17:35 - 23:28SYD-ORD
20h 53m1 stop
$1,346American Airlines
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Tue, 13 May - Tue, 27 May
14:40 - 06:35ORD-SYD
23h 55m2 stops
11:50 - 21:07SYD-ORD
25h 17m1 stop
$1,353American Airlines
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Mon, 10 Mar - Wed, 26 Mar
07:18 - 07:25ORD-SYD
31h 07m1 stop
11:50 - 19:20SYD-ORD
24h 30m1 stop
$1,367British Airways
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Tue, 4 Feb - Tue, 11 Feb
15:20 - 09:00ORD-SYD
24h 40m1 stop
$643Qantas Airways
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Thu, 6 Feb
09:45 - 07:25ORD-SYD
28h 40m1 stop
$662American Airlines
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Thu, 30 Jan
08:00 - 07:25ORD-SYD
54h 25m3 stops
Tue, 4 Feb
16:55 - 12:30ORD-SYD
26h 35m2 stops
$988Fiji Airways
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Tue, 4 Mar
17:40 - 12:30ORD-SYD
25h 50m2 stops
$1,007Fiji Airways
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Sun, 2 Feb
15:20 - 12:30ORD-SYD
28h 10m2 stops
$1,079
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Mon, 3 Feb
07:20 - 08:20ORD-SYD
33h 00m2 stops
$1,135Air Canada
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Tue, 1 Apr
07:20 - 08:20ORD-SYD
33h 00m3 stops
$1,145Air Canada
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Tue, 1 Apr
15:35 - 09:05ORD-SYD
24h 30m1 stop
$1,450United Airlines
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Sun, 19 Jan
06:30 - 09:15ORD-SYD
33h 45m1 stop
$1,484United Airlines
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Mon, 20 Jan
15:40 - 09:00ORD-SYD
24h 20m1 stop
11:15 - 23:10SYD-ORD
28h 55m1 stop
$1,343Qantas Airways
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Thu, 26 Dec - Sat, 28 Dec
20:25 - 09:00ORD-SYD
43h 35m1 stop
11:15 - 17:29SYD-ORD
23h 14m1 stop
$1,346Qantas Airways
Find Deal
Mon, 23 Dec - Mon, 30 Dec
14:50 - 06:35ORD-SYD
22h 45m1 stop
21:25 - 05:46SYD-ORD
25h 21m1 stop
$1,382American Airlines
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Wed, 25 Dec - Fri, 27 Dec
14:14 - 06:35ORD-SYD
23h 21m2 stops
21:25 - 05:46SYD-ORD
25h 21m1 stop
$1,388American Airlines
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Wed, 25 Dec - Fri, 27 Dec
15:40 - 09:00ORD-SYD
24h 20m1 stop
22:15 - 12:59SYD-ORD
31h 44m2 stops
$1,944
Find Deal
Thu, 26 Dec - Sat, 28 Dec
20:25 - 09:00ORD-SYD
43h 35m1 stop
22:15 - 12:59SYD-ORD
31h 44m2 stops
$1,960
Find Deal
Mon, 23 Dec - Sat, 28 Dec
09:50 - 09:35ORD-SYD
30h 45m2 stops
11:20 - 10:54SYD-ORD
40h 34m3 stops
$2,446Air Canada
Find Deal
Tue, 24 Dec - Sun, 29 Dec
20:25 - 09:35ORD-SYD
44h 10m2 stops
11:20 - 19:32SYD-ORD
25h 12m2 stops
$2,448Air Canada
Find Deal
Mon, 23 Dec - Mon, 30 Dec
06:15 - 09:05ORD-SYD
33h 50m1 stop
16:15 - 23:19SYD-ORD
24h 04m1 stop
$2,792United Airlines
Find Deal
Thu, 26 Dec - Sun, 12 Jan
18:25 - 09:05ORD-SYD
21h 40m1 stop
16:15 - 06:18SYD-ORD
31h 03m1 stop
$2,797United Airlines
Find Deal
Thu, 26 Dec - Sun, 12 Jan

Qantas Airways flights from Chicago O'Hare Intl Airport to Sydney

Our best Qantas Airways deals on Chicago O'Hare Intl Airport to Sydney flight tickets
Qantas Airways
14 May
ORD18:50Chicago O'Hare Intl
21h 15m
1 stop
SYD07:05Sydney Kingsford Smith
21 May
SYD09:10Sydney Kingsford Smith
25h 28m
1 stop
ORD19:38Chicago O'Hare Intl
Qantas Airways
10 Mar
ORD19:13Chicago O'Hare Intl
21h 47m
1 stop
SYD09:00Sydney Kingsford Smith
26 Mar
SYD11:15Sydney Kingsford Smith
20h 40m
1 stop
ORD15:55Chicago O'Hare Intl
Qantas Airways
16 Feb
ORD15:17Chicago O'Hare Intl
24h 43m
1 stop
SYD09:00Sydney Kingsford Smith
3 Mar
SYD11:15Sydney Kingsford Smith
23h 02m
1 stop
ORD17:17Chicago O'Hare Intl

Fiji Airways flights from Chicago O'Hare Intl Airport to Sydney

Our best Fiji Airways deals on Chicago O'Hare Intl Airport to Sydney flight tickets
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
11 Feb
ORD16:55Chicago O'Hare Intl
26h 35m
2 stops
SYD12:30Sydney Kingsford Smith
24 June
SYD06:15Sydney Kingsford Smith
29h 08m
2 stops
ORD20:23Chicago O'Hare Intl
Fiji Airways
11 Feb
ORD16:55Chicago O'Hare Intl
26h 35m
2 stops
SYD12:30Sydney Kingsford Smith
25 Feb
SYD14:00Sydney Kingsford Smith
22h 17m
2 stops
ORD19:17Chicago O'Hare Intl

See travel insights to Sydney from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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 cheapest month to fly to Sydney?

The month of March is, on average, the cheapest month to fly to Sydney from Chicago O'Hare Intl Airport, with most prices found around $1,545. 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 $1,663.

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 $1,887. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,592.

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 O'Hare Intl Airport to Sydney in the afternoon for as low as $2,208. 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 $3,376 on average. Flights to Sydney from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 $1,973. However, in the past 72 hours, people saw flights from Chicago O'Hare Intl Airport for as low as $2,230.

Can stopping save me money on Chicago O'Hare Intl Airport to Sydney flights?

You could potentially save up to 2% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Sydney flight.

How have Chicago O'Hare Intl Airport to Sydney flight prices changed over time?

As of December 2024, prices for Chicago O'Hare Intl Airport to Sydney flights are approximately 52% cheaper when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to Sydney

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

Cheap Chicago O'Hare Intl Airport to Sydney (ORD to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Sydney

Best price found

$643

Fastest flight time

20h 36m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from Chicago O'Hare Intl Airport in the past 72 hours is $643. The best return flight deal from Chicago O'Hare Intl Airport to Sydney found on momondo in the last 72 hours is $1,110.
The fastest flight from Chicago O'Hare Intl Airport to Sydney takes 20h 36m
There are no direct flights from Chicago O'Hare Intl Airport to Sydney. Popular non-direct route for this connection is Chicago O'Hare Intl Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

  • How far is Chicago O'Hare Intl to Sydney Kingsford Smith by plane?

    A flight from Chicago O'Hare Intl to Sydney Kingsford Smith will travel around 14845.8 km. In terms of flight time, this usually takes a little over 20h 36m.

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

    Prices for flights from Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

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

  • How old do you have to be to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport to Sydney?


Best airlines flying from Chicago O'Hare Intl Airport to Sydney

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Sydney with momondo
Airline
Rating
Free cancellation
Price
Qantas AirwaysPriceFrom $1,457Free cancellationRating
7.5
809 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $1,544Free cancellationRating
7.0
8,421 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,803Free cancellationRating
7.4
9,022 reviews
Search United Airlines flights

Why use momondo?

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

Finding the right flight to Sydney from Chicago 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 Chicago to Sydney with flexible booking policies on momondo?

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

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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