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Cheap flights from Chicago O'Hare Intl Airport to Sydney from $476

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 6/24. 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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0 bags

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Find the cheapest flights from Chicago O'Hare Intl Airport to Sydney

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Chicago O'Hare Intl Airport to Sydney.
 Logo
11:53 am - 12:15 pmORD-SYD
33h 22m2 stops
 Logo
1:15 pm - 6:42 amSYD-ORD
32h 27m2 stops
jue., may. 1 - jue., may. 8
 Logo
11:53 am - 12:15 pmORD-SYD
33h 22m2 stops
 Logo
1:15 pm - 8:50 amSYD-ORD
34h 35m3 stops
jue., may. 1 - jue., may. 8
 Logo
5:51 am - 12:15 pmORD-SYD
39h 24m3 stops
 Logo
1:15 pm - 6:42 amSYD-ORD
32h 27m2 stops
$1,019
Find Deal
jue., may. 8 - mar., jun. 10
Air Canada Logo
10:40 am - 7:20 amORD-SYD
29h 40m2 stops
Air Canada Logo
9:20 am - 4:42 pmSYD-ORD
22h 22m1 stop
$1,046Air Canada
Find Deal
mié., sep. 10 - mié., sep. 24
Air Canada Logo
8:40 am - 7:20 amORD-SYD
31h 40m2 stops
Air Canada Logo
9:20 am - 7:59 amSYD-ORD
37h 39m2 stops
$1,047Air Canada
Find Deal
dom., may. 18 - dom., may. 25
Qantas Airways Logo
5:38 pm - 7:05 amORD-SYD
22h 27m1 stop
Qantas Airways Logo
9:10 am - 3:44 pmSYD-ORD
21h 34m1 stop
$1,354Qantas Airways
Find Deal
lun., jun. 2 - lun., jun. 23
Qantas Airways Logo
6:45 pm - 7:05 amORD-SYD
21h 20m1 stop
Qantas Airways Logo
2:30 pm - 5:32 pmSYD-ORD
20h 02m1 stop
$1,355Qantas Airways
Find Deal
lun., sep. 8 - lun., dic. 8
United Airlines Logo
7:40 pm - 7:00 amORD-SYD
20h 20m1 stop
United Airlines Logo
10:20 am - 2:55 pmSYD-ORD
19h 35m1 stop
$1,456United Airlines
Find Deal
dom., jun. 1 - mar., jun. 17
United Airlines Logo
12:45 pm - 7:00 amORD-SYD
27h 15m2 stops
United Airlines Logo
9:30 am - 2:39 pmSYD-ORD
20h 09m1 stop
$1,460United Airlines
Find Deal
dom., jun. 8 - mar., jun. 24
American Airlines Logo
5:15 pm - 7:05 amORD-SYD
22h 50m2 stops
American Airlines Logo
5:45 pm - 11:43 pmSYD-ORD
20h 58m1 stop
$1,485American Airlines
Find Deal
mié., ago. 6 - sáb., ago. 16

Air Canada flights from Chicago O'Hare Intl Airport to Sydney

Our best Air Canada deals on Chicago O'Hare Intl Airport to Sydney flight tickets
Air Canada
Sep 10
ORD10:40 amChicago O'Hare Intl
29h 40m
2 stops
SYD7:20 amSydney Kingsford Smith
Sep 24
SYD9:20 amSydney Kingsford Smith
22h 22m
1 stop
ORD4:42 pmChicago O'Hare Intl
Air Canada
May 18
ORD8:40 amChicago O'Hare Intl
31h 40m
2 stops
SYD7:20 amSydney Kingsford Smith
May 25
SYD9:20 amSydney Kingsford Smith
37h 39m
2 stops
ORD7:59 amChicago O'Hare Intl
Air Canada
May 7
ORD10:40 amChicago O'Hare Intl
29h 40m
2 stops
SYD7:20 amSydney Kingsford Smith
May 28
SYD9:20 amSydney Kingsford Smith
37h 39m
2 stops
ORD7:59 amChicago 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
May 3
ORD6:45 pmChicago O'Hare Intl
26h 00m
2 stops
SYD11:45 amSydney Kingsford Smith
May 10
SYD1:45 pmSydney Kingsford Smith
21h 39m
2 stops
ORD8:24 pmChicago O'Hare Intl
Fiji Airways
May 3
ORD6:45 pmChicago O'Hare Intl
26h 00m
2 stops
SYD11:45 amSydney Kingsford Smith
May 10
SYD1:45 pmSydney Kingsford Smith
21h 39m
2 stops
ORD8:24 pmChicago O'Hare Intl
Fiji Airways
May 10
ORD6:45 pmChicago O'Hare Intl
26h 00m
2 stops
SYD11:45 amSydney Kingsford Smith
May 17
SYD6:00 amSydney Kingsford Smith
29h 24m
2 stops
ORD8:24 pmChicago 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 typical price of a round-trip flight between Chicago O'Hare Intl Airport and Sydney?

What is the cheapest month to fly to Sydney?

In general, March is the cheapest month to fly from Chicago O'Hare Intl Airport to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $857. If you are unable to visit Sydney during the month of March, then departing from Chicago O'Hare Intl Airport during the month May is also very affordable. Most momondo users find prices during this month for around $885.

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

The cheapest day to depart from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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?

You are more likely to see cheaper flights to Sydney from Chicago O'Hare Intl Airport when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,120 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Chicago O'Hare Intl Airport for as low as $843 on momondo.

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

As of April 2025, prices for Chicago O'Hare Intl Airport to Sydney flights are approximately 59% 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 round-trip 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

$476

Fastest flight time

20h 20m

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 $476. The best round-trip flight deal from Chicago O'Hare Intl Airport to Sydney found on momondo in the last 72 hours is $943.
The fastest flight from Chicago O'Hare Intl Airport to Sydney takes 20h 20m
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?

    Sydney Kingsford Smith is 9224.8 mi away from Chicago O'Hare Intl. 20h 20m is a normal flight duration for this route.

  • 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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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
ANAPriceFrom $679Free CancellationRating
8.3
830 reviews
Search ANA flights
Qantas AirwaysPriceFrom $806Free CancellationRating
7.5
815 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $825Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $852Free CancellationRating
8.0
7,897 reviews
Search Delta flights
Air CanadaPriceFrom $975Free CancellationRating
7.0
9,029 reviews
Search Air Canada flights
Cathay PacificPriceFrom $1,138Free CancellationRating
7.5
842 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $1,204Free CancellationRating
7.4
8,619 reviews
Search United Airlines flights
Air New ZealandPriceFrom $1,256Free CancellationRating
8.0
461 reviews
Search Air New Zealand flights

Traveling to a place near Sydney?

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Sydney. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Chicago to Sydney on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Chicago to Sydney flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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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