ORD - SYD

$634 Find Cheap Flights from Chicago O'Hare Airport to Sydney

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 27/4. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Sydney, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
$1,400
Overall average: $1,974
Multiple Airlines
Mon 27/4Mon 4/5
ORD - SYD • 2 stops
Cheapest one-way flight
$634
Typical prices: $1,227-$1,287
Multiple Airlines
Mon 27/4
ORD - SYD • 2 stops
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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Top stopover airports
Vancouver (YVR)
Cheapest • Avg $2,015 (return)
Los Angeles (LAX)
Shortest trip • 21h 35m (one-way)
Insights
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When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 18% compared to booking last minute.
Insights
Insights
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Insights
When to travel
August
Cheapest • 12% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Mon, 27 Apr - Mon, 4 May
Multiple Airlines Logo
05:15 - 12:05
ORD
-
SYD
39h 50m
2 stops
Multiple Airlines Logo
13:15 - 23:27
SYD
-
ORD
25h 12m
2 stops
$1,400Multiple Airlines
Wed, 6 May - Wed, 13 May
Multiple Airlines Logo
07:30 - 11:50
ORD
-
SYD
37h 20m
2 stops
Multiple Airlines Logo
13:20 - 05:35
SYD
-
ORD
31h 15m
2 stops
$1,415Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
07:30 - 08:45
ORD
-
SYD
34h 15m
2 stops
Multiple Airlines Logo
09:55 - 23:27
SYD
-
ORD
28h 32m
2 stops
$1,459Multiple Airlines
Fri, 17 Apr - Tue, 21 Apr
Multiple Airlines Logo
05:15 - 11:50
ORD
-
SYD
39h 35m
2 stops
Multiple Airlines Logo
06:00 - 23:27
SYD
-
ORD
32h 27m
2 stops
$1,472Multiple Airlines
Tue, 21 Apr - Sun, 3 May
Multiple Airlines Logo
07:30 - 08:45
ORD
-
SYD
34h 15m
2 stops
Multiple Airlines Logo
07:50 - 05:35
SYD
-
ORD
36h 45m
2 stops
$1,475Multiple Airlines
Wed, 22 Apr - Sun, 3 May
Multiple Airlines Logo
07:30 - 11:50
ORD
-
SYD
37h 20m
2 stops
Multiple Airlines Logo
06:00 - 05:35
SYD
-
ORD
38h 35m
2 stops
$1,489Multiple Airlines
Sat, 9 May - Mon, 18 May
Multiple Airlines Logo
15:00 - 11:50
ORD
-
SYD
29h 50m
2 stops
Multiple Airlines Logo
13:15 - 23:27
SYD
-
ORD
25h 12m
2 stops
$1,519Multiple Airlines
Sun, 26 Apr - Sun, 3 May
Multiple Airlines Logo
14:00 - 11:50
ORD
-
SYD
30h 50m
2 stops
Multiple Airlines Logo
13:15 - 05:35
SYD
-
ORD
31h 20m
2 stops
$1,572Multiple Airlines
Tue, 5 May - Tue, 12 May
Air Canada Logo
15:40 - 07:20
ORD
-
SYD
24h 40m
1 stop
Air Canada Logo
09:20 - 14:45
SYD
-
ORD
20h 25m
1 stop
$1,576Air Canada
Tue, 5 May - Tue, 12 May
Air Canada Logo
11:05 - 07:20
ORD
-
SYD
29h 15m
2 stops
Air Canada Logo
09:20 - 14:45
SYD
-
ORD
20h 25m
1 stop
$1,581Air Canada
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.

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 August, where tickets cost $1,694 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $2,329 and $2,213 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 2 weeks before departure, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Find deals

Good to know

Low seasonJuly
Cheapest flight$634
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly (21% 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 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Sydney was $634 for a one-way ticket and $1,400 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 1004 reviews
7.4Comfort
8.1Crew
7.7Boarding
7.2Entertainment
7.0Food
Airline reviews

My experience was great overall. Tanya was particularly friendly and helpful the entire trip. I was very pleased with her customer service skills. The plane was an older aircraft but the entire way was comfortable with barely any turbulence at all. Qantas should speed up its fleet renovation. Totally recommend using this airline.

10.0 ExcellentFernando, Feb 2026
PER - BNE
Read more Qantas Airways reviews

My experience was great overall. Tanya was particularly friendly and helpful the entire trip. I was very pleased with her customer service skills. The plane was an older aircraft but the entire way was comfortable with barely any turbulence at all. Qantas should speed up its fleet renovation. Totally recommend using this airline.

Qantas is always subpar beyond comfy chairs for a domestic flight

I liked boarding the plane. The staff were rude, the food was appalling and the chairs the most uncomfortable I have ever experienced

an hour late, then had to disembark on back stairs and take 4 flights up to get to main airport. No warning, and difficulty for those with canes and poor knees.

Well my expórtenle with Qantas it wasn’t that good KLM from Bs Aires was delay Santiago Chile Qantas QF 028 was still in the airport but the crew didn’t opened the door for me soo I lost my fly And I stuck in the airport 13 hrs waiting for next fly by Latam Arline My question is can I have my money back for business class

It was ok, the additional baggage charges were a bit excessive given winter is a time for skiing. To have to pay $600 extra for skis was tantamount to robbery. Airlines should consider sporting goods as baggage. Likewise, they should consider increasing the number of bags allowed on international flights to known ski destinations.

Flight was canceled. I was not alerted. It was only kayak that alerted me

Flight was 2.5 hours late leaving. We spent 50 minutes of that sitting on the plane with no explanation. They did reduce the time in the air so we arrived a little less late which was something. The cheese and crackers were okay but the wine was terrible.

Couldn't access entertainment on app as said in an email

Excellent as always, I won't fly to Australia, and back to the US on any other airline. The flight crew is always top notch, and have a way to make one feel extra special. Thank you for your service, I would rate Qantas Airways a 10+.

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)