ORD - SYD

$936 Find Cheap Flights from Chicago O'Hare Airport 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 from O'Hare Intl to Sydney departing on 22/8. 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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Everything you should know

Cheapest return fare
$1,741
Typical prices: $1,208-$2,047
Qantas Airways
Sat 7/11Fri 13/11
ORD - SYD • 1 stop
Cheapest one-way flight
$936
Typical prices: $1,099-$1,317
Multiple Airlines
Sat 22/8
ORD - SYD • 3 stops
Top airlines
Qantas Airways
Cheapest • from $1,741 (return)
Qantas Airways
Best reviews • 7.5 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Direct flights
Not available
There are currently no direct flights between O'Hare Intl and Sydney. You’ll need at least 1 connection.
Insights
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Insights
Top stopover airports
Vancouver (YVR)
Cheapest • Avg $2,165 (return)
Los Angeles (LAX)
Shortest trip • 21h 37m (one-way)
Insights
Insights
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Insights
When to book
5 weeks
in advance
Our data shows that travellers who book at least 5 weeks in advance save around 15% compared to booking last minute.
Insights
Insights
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Insights
When to travel
November
Cheapest • 17% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Sydney!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from O'Hare Intl to Sydney (ORD-SYD)

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

Sat, 7 Nov - Fri, 13 Nov
Qantas Airways Logo
20:56 - 06:25
ORD
-
SYD
40h 29m
1 stop
Qantas Airways Logo
19:00 - 16:56
SYD
-
ORD
38h 56m
2 stops
$1,741Qantas Airways
Sat, 22 Aug - Fri, 4 Sep
Qantas Airways Logo
21:06 - 07:05
ORD
-
SYD
42h 59m
1 stop
Qantas Airways Logo
09:10 - 15:54
SYD
-
ORD
21h 44m
1 stop
$1,743Qantas Airways
Wed, 26 Aug - Wed, 2 Sep
Qantas Airways Logo
21:06 - 07:05
ORD
-
SYD
42h 59m
1 stop
Qantas Airways Logo
17:50 - 23:30
SYD
-
ORD
20h 40m
1 stop
$1,745Qantas Airways
Thu, 6 Aug - Wed, 14 Oct
United Airlines Logo
18:20 - 06:55
ORD
-
SYD
21h 35m
1 stop
United Airlines Logo
11:20 - 14:50
SYD
-
ORD
19h 30m
1 stop
$1,746United Airlines
Mon, 2 Nov - Fri, 13 Nov
Delta Logo
17:20 - 08:30
ORD
-
SYD
22h 10m
1 stop
Delta Logo
10:40 - 13:47
SYD
-
ORD
20h 07m
1 stop
$1,748Delta
Sat, 22 Aug - Sun, 30 Aug
United Airlines Logo
14:42 - 07:00
ORD
-
SYD
25h 18m
2 stops
United Airlines Logo
09:30 - 16:36
SYD
-
ORD
22h 06m
2 stops
$1,752United Airlines
Thu, 13 Aug - Tue, 25 Aug
Delta Logo
14:00 - 06:50
ORD
-
SYD
25h 50m
2 stops
Delta Logo
09:15 - 17:41
SYD
-
ORD
23h 26m
2 stops
$1,753Delta
Sat, 7 Nov - Sat, 14 Nov
United Airlines Logo
21:35 - 07:00
ORD
-
SYD
40h 25m
1 stop
United Airlines Logo
09:20 - 12:45
SYD
-
ORD
20h 25m
1 stop
$1,758United Airlines
Sat, 29 Aug - Sun, 6 Sep
Delta Logo
17:10 - 06:50
ORD
-
SYD
22h 40m
1 stop
Delta Logo
09:15 - 13:41
SYD
-
ORD
43h 26m
1 stop
$1,761Delta
Sun, 6 Sep - Sun, 13 Sep
Qantas Airways Logo
19:07 - 06:55
ORD
-
SYD
20h 48m
1 stop
Qantas Airways Logo
09:10 - 15:53
SYD
-
ORD
21h 43m
1 stop
$1,764Qantas Airways
Booking Insights

KAYAK's insights & trends for O'Hare Intl to Sydney flights

Get data-powered insights and trends into flights from O'Hare Intl to Sydney to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Chicago O'Hare Intl Airport to Sydney?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Chicago O'Hare Intl Airport to Sydney departing in November.

Flight prices are below average for this route right now.

Flights to Sydney from Chicago O'Hare Intl Airport usually cost between $2,008 and $2,786 in November.
The lowest price found in the past 5 days was $1,741 on Qantas Airways (7 Nov–13 Nov).

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago O'Hare Intl Airport to Sydney is November, where tickets cost $1,702 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $2,567 and $2,522 respectively.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Sydney?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago O'Hare Intl Airport to Sydney, you should book around 5 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Find deals

Good to know

Low season

September

Cheapest flight

$936
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly (23% more expensive on average)
Flight from Chicago O'Hare Airport to Sydney

When to book flights from O'Hare Intl to Sydney

Are your dates flexible? Find out the best times to travel from O'Hare Intl to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago O'Hare Airport to Sydney flights

  • US citizens need a visa to travel to Sydney, Australia. US citizens can also apply for various visas, including student visas, employment visas, family visas, visitor visas, Evisitor visas, Electronic Travel Authority (ETA), Work and Holiday visas, depending on their circumstances. It's important to note that visa requirements may vary depending on the purpose and duration of the trip, and each application is subject to individual assessment.

    What is the luggage allowance on Air New Zealand flights from Chicago O'Hare Airport to Sydney?

  • Air New Zealand allows economy class passengers to bring one cabin bag that weighs no more than 15 lbs. The class also includes one checked bag not exceeding 50lbs. Premium Economy passengers can bring two bags, each weighing no more than 50 lbs while Business Premier passengers can bring three bags each weighing no more than 50 lbs.

    What services does Delta offer for passengers in economy class on flights from Chicago O'Hare Airport to Sydney?

  • Delta offers various services to passengers in economy class on flights from Chicago O'Hare Airport to Sydney. These include complimentary snacks and beverages, in-flight entertainment, such as movies, TV shows, and music, Wi-Fi access at an additional cost, and comfortable seating.

    What seat selection options are available on flights from Chicago O'Hare Airport to Sydney with Qantas Airways?

  • Qantas Airways offers several options for seat selection on their flights from Chicago O'Hare Airport to Sydney. Passengers can choose a standard seat at the time of booking or during check-in at no extra cost. Passengers can also decide to upgrade to seats with extra legroom for an additional fee. These seats are typically located in exit rows or at the front of the cabin.

    Can I cancel my booking for flights from Chicago O'Hare Airport to Sydney with Air Canada?

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Sydney?

    In the last 5 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Sydney was $857 for a one-way ticket and $1,741 for a return.

  • Which aircraft models fly most regularly from Chicago O'Hare Airport to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Chicago O'Hare Airport to Sydney?

    oneworld is the only airline alliance operating flights between Chicago O'Hare Airport and Sydney.

  • How does KAYAK find such low prices on flights from Chicago O'Hare Airport 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 Chicago O'Hare Airport to Sydney.

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

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

  • What is the Hacker Fare option on flights from Chicago O'Hare Airport 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 Chicago O'Hare Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago O'Hare Airport 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 Chicago O'Hare Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chicago O'Hare Intl Airport to Sydney

  • #¡REF!
  • Flights from Chicago O'Hare Airport (ORD) to Sydney (SYD) usually entail one or two stops in various cities depending on the airline you choose. Some common layovers for this route include Auckland (AKL), Christchurch (CHC), Los Angeles (LAX), Houston (IAH), San Francisco (SFO), and Dallas (DFW).
  • Air India provides special assistance to passengers with reduced mobility on flights from Chicago O'Hare Airport (ORD) to Sydney (SYD). The airline specifically offers boarding and deplaning assistance, and assistance in moving around the airport.
  • ANA provides baby bassinets for infants up to 8 months on flights from Chicago O'Hare Airport (ORD) to Sydney (SYD). The airline also offers special children's meals, which are designed to suit the dietary requirements and tastes of young children, including vegetarian options, gluten-free options, and more.
  • There are several transportation options to get from Sydney Airport (SYD) to the city center. One option is the Airport Link train. The train station is located beneath the airport's Terminal 1, and the journey takes around 15 minutes to reach the city center. Train tickets can be purchased at the airport's train station or online.

Reviews of the top airline flying from O'Hare Intl to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from O'Hare Intl to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Qantas AirwaysOverall score based on 1067 reviews
7.7Boarding
8.1Crew
7.2Entertainment
7.0Food
7.4Comfort
Airline reviews

PREMIUM ECONOMY - excellent !Brilliant new plane. Excellent tv catalogue. Good food. Good communication and service from all friend Australian crew. Good communication from captain. Best travel experience in years.

10.0 ExcellentAnonymous, Apr 2026
SFO - SYD
Read more Qantas Airways reviews

PREMIUM ECONOMY - excellent !Brilliant new plane. Excellent tv catalogue. Good food. Good communication and service from all friend Australian crew. Good communication from captain. Best travel experience in years.

I couldn't hear all of the announcements. It was nice when they put them on the screen.

Loved the staff. The economy seats could have been bigger.

The food was terrible. And the flight attendants were very rude. One flight attendant wouldn’t help a passenger lift their carry-on. Another flight attendant wouldn’t give a man an extra blanket. And they walked by not even looking at the passengers to see if they needed a glass of water.

Delayed and missed connection, was not re-booked like other travelers so ended up being stuck for several hours due to no one handling my booking.

same as previous comments. i hate being on a plane that long. no problems w/anything else.

Much better than I expected for such a long flight.

Good - better than other airlines in terms of food and seat comfort.

Experience was great. My only advice is to have a pasta dish on the menu. Otherwise everything was excellent.

Flight LA to Sydney was first moved earlier by 2 hrs from 10:25 pm to 8:25pm roughly a week before departure. Then on actual departure date, it was delayed 2x, and needed up leaving close to 10 pm. Then entertainment for the whole flight wasn’t working for most of the seats including ours. The baby crib at the middle isle was being taped to the wall to keep it tacked in using a packing tape while passengers were walking by looking for their seats. Not projecting good confidence. After a few minutes after take off the whole crib fell off. Good the people seating next to it wast hit or got scared. At arrival at Sydney, crew handed the customs forms as we were getting out of the plane. So passengers had to scramble to find a place to fill up the forms along the corridor going to immigration. So no one is available to help from Qantas to fill up the entry forms. Not a very good experience for a flagship carrier.

Everything you need to know for your flight from O'Hare Intl to Sydney

Information on your arrival and departure airports

Chicago O'Hare Airport (ORD)
Sydney (SYD)