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ORD - SYD

Find cheap flights from Chicago O'Hare Airport to Sydney from $1,601

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 13/7. 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
Thu 23/5
Thu 30/5

Search 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
In the last 7 days, travellers have searched 44,632,927 times on KAYAK, and here's why:

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Cheap flight deals 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 round-trip 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 and deals for you by selecting your travel dates.
Choose your dates
17:55 - 11:45ORD-SYD
26h 50m2 stops
13:15 - 06:20SYD-ORD
32h 05m2 stops
$1,869
Find Deal
Sat, 18 May - Tue, 21 May
09:27 - 11:45ORD-SYD
35h 18m3 stops
13:15 - 06:30SYD-ORD
32h 15m3 stops
$1,894
Find Deal
Mon, 6 May - Tue, 14 May
16:05 - 08:45ORD-SYD
25h 40m1 stop
21:50 - 14:25SYD-ORD
31h 35m1 stop
$2,070Cathay Pacific
Find Deal
Sun, 28 Apr - Mon, 13 May
16:05 - 10:50ORD-SYD
27h 45m1 stop
21:50 - 14:25SYD-ORD
31h 35m1 stop
$2,080Cathay Pacific
Find Deal
Tue, 30 Apr - Thu, 16 May
15:40 - 07:20ORD-SYD
24h 40m1 stop
09:20 - 14:29SYD-ORD
20h 09m1 stop
$2,347Air Canada
Find Deal
Tue, 21 May - Tue, 28 May
08:45 - 07:20ORD-SYD
31h 35m3 stops
09:20 - 20:16SYD-ORD
25h 56m2 stops
$2,357Air Canada
Find Deal
Tue, 21 May - Tue, 11 Jun
19:35 - 06:55ORD-SYD
20h 20m1 stop
10:20 - 21:25SYD-ORD
26h 05m1 stop
$2,470United Airlines
Find Deal
Sun, 26 May - Sun, 16 Jun
17:50 - 06:55ORD-SYD
22h 05m2 stops
09:30 - 17:00SYD-ORD
22h 30m2 stops
$2,476United Airlines
Find Deal
Mon, 20 May - Tue, 28 May
18:15 - 06:55ORD-SYD
21h 40m1 stop
08:45 - 20:25SYD-ORD
26h 40m2 stops
$2,520Air New Zealand
Find Deal
Mon, 22 Jul - Thu, 15 Aug
14:30 - 07:00ORD-SYD
25h 30m1 stop
11:45 - 20:10SYD-ORD
25h 25m2 stops
$2,703Air New Zealand
Find Deal
Tue, 11 Jun - Tue, 10 Dec

Flights from O'Hare Intl to Sydney - Travel Insights & Trends

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’s the cheapest day of the week to fly from Chicago O'Hare Airport to Sydney?

The average price of all flights from Chicago O'Hare Intl Airport to Sydney clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Sydney on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Tuesday is the most expensive day to fly from Chicago O'Hare Airport to Sydney. For your return ticket, we recommend flying on a Wednesday and avoiding Mondays for the best deals.

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 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 October, where tickets cost $2,166 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is $3,664 and $3,184 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Chicago O'Hare Intl Airport to Sydney, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 14 days before departure.

Which airlines provide the cheapest flights from Chicago O'Hare Airport to Sydney?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Air Canada offered the best one-way deal for that route, at $1,880. KAYAK users also found Chicago O'Hare Airport to Sydney return flights on Cathay Pacific from $2,070 and on Air Canada from $2,347.

Good to know

Low season

July

High season

December

Cheapest flight

$1,601
Best time to beat the crowds but there is an average 21% increase in price.
Most popular time to fly (44% 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 $1,031 for a one-way ticket and $1,204 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?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Chicago O'Hare Airport and Sydney, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Chicago to Sydney, Air New Zealand or United Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Sydney are Air New Zealand and United Airlines. With an average price for the route of $2,517 and an overall rating of 8.2, Air New Zealand is the most popular choice. United Airlines is also a great choice for the route, with an average price of $2,240 and an overall rating of 7.4.

  • 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.

See more FAQs

Top tips for finding a cheap flight from Chicago 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.
See more tips

Top 3 airlines serving 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.
8.2
Air New ZealandOverall score based on 658 reviews
7.9entertainment
8.1comfort
8.8crew
8.4boarding
7.6food
Airline reviews

Short flight so no entertainment, turbulence so no food service - overall flight as expected

8.0 ExcellentMichelle, Apr 2024NPL - AKL
Read more about Air New Zealand reviews

Short flight so no entertainment, turbulence so no food service - overall flight as expected

All was good, the only thing was it didn't run on time.

Great meal. Best seats ever! They need to teach other airlines how to do that.

Overall excellent but the Captain kept the seat belt sign on for far too long, especially at the beginning and end of the flight. It was 2 hours after take-off before the crew were able to start the service (on an 11 hour night flight, reducing our sleeping time) and the seat belt sign on went on during breakfast (90 mins before landing) and was not turned off again until we landed. This made for an uncomfortable journey of trying to limit fluid intake because it was unclear when the toilets would be available for use.

The staff and crew on board were excellent. Business class however, was very weird. I thought we would have individual pods, but the way it was set up was unexpected. Not very private and If you wanted to lay down, you had to have an entire bed made up for you by the crew, rather than how Delta one works where you could just lie down whenever you feel like it. It was a 16 hour flight. I chose not to have my bed made, and that turned out to be a good idea because everybody who had their bed made had to wait for the crew to roll up their mattresses. So strange!

The recline on the seat in front of me came back so that I was staring at the top of the man’s head in front of me the whole trip. He refused to bring his seat back up twice every time he was instructed to do so and only relented when he had a tray of good in front of him. And then right back in my lap!!! Horrible man!! I complained to the staff multiple times, but no one would address the issue. Otherwise, it would have been a perfect flight.

There was a snafu with confirming seats at check which left us in limbo for the second leg of our trip. I believe the ANZ app is not well integrated with the systems at the terminal resulting in this disconcerting error.

Carring crew, nice ambiance of the cabin, comfortable beds, good food well served. We liked everything.

The pilot tried to make up for lost time due to delays that were out of her control. She communicated the issues openly and clearly and made every effort to do what she could to alleviate issues.

The only thing that was less than excellent was the food server at dinner. (I had the chicken.) It wasn't that it was poorly heated or in difficult-to-open containers; it was just that it had a very peculiar taste. And I use that to describe not just the main course but the dessert as well. Very odd flavours for what seemed to be a mainstream item. I did like that the airline offered us a free glass of wine. The breakfast omelette wasn't bad, although it was quite bland.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

Flight delayed for 2 hours due to a part. The plane sat waiting for boarding for a long time and during final preflight inspection the issue was found. Why not do the preflight inspection sooner if you know the plane is being used?

The flight experience was very good! Especially the United Club!

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

Aircraft has better leg room than any of United's larger planes. We had requested mobility assistance for this and related flights. United's response to all was superb.

The flight from Ottawa to Chicago took a lot longer due to DC in Ottawa. We got to Chicago and went to our gate to catch our flight. We only had nine minutes I found that very stressful.

Got automatically assigned a middle seat, unless I fork out extra money for seat assigment.

Good boarding. Crew started quick with drinks and food. They came around several times for trash which I really liked. Other than turbulence due to storms in the area, flight was great.

my seat got changed twice after checking on then boarding it had been given to a family so by the time they found a seat for me no overhead storage left. i ended up losing my Sony Headphones case because i could even access underthe seat in front of my when deplaning.

All good, useful to have the united app from check in to boarding

Cabin crew were great. Seats are criminal for tall people

Flight was delayed 1.5 hrs due to problem with a previous flight to mine; I was informed appropriately via Text & Email, however, website did not keep up with messages sent by nearly an hour. When checking-in warm & friendly reception at check-in desk until female Air Canada Rep noticed my flight number and instantly pivoted to a condescending & sarcastic comments about getting my bag checked in since I’m running so late; then tone instantly changed again few minutes later when she muttered, “Oh, they’ve delayed it” another sign systems & worse front line staff, not fully informed or simply not reading their flight status updates. Flight crew were very friendly & did a great job trying to make up lost time due to the delay.

It was great, love the experience and will definitely recommend 👌. Communication was great

My flight was great! Gate attendants and crew were great… pleasant and in good spirits. Flight delayed several hours and we were well informed of the status while on plane. Thank you!

The fact that I got to Toronto alive and well and safe is a huge plus. I thank the captain and crew for a safe flight The comfort of the aircraft leaves much to be desired. Human beings should not have to be that cramped and squashed on a flight that we pay a lot for and even have to pay for lousy food choices The cabin crew were pleasant and helpful Kudos to them as the flight was packed to capacity and there was a lot of work for them in a short space of time All in all a good experience, but too cramped

It was great to check carryon luggage at no charge when there was no room for ours. A hidden benefit of having low-tier tickets. Also great to stay off plane as long as possible. Airline gave us seats we wanted on this last leg, again at no charge.

Fresh fuit or veg snacks would be so great, but there are two good restaurants in Denver airport. Try Etais UDIS or Freshens DIA for nutritious delicious pita sandwiches/ donairs and crepes in Freshens.

The late departure Of two hours waitresses, immature, and gossiping

Crowded plane but it flew on time and had friendly staff

We had a good flight, service was good and lots of leg room. Service was good and the staff were friendly.

Book cheap flights from Chicago to Sydney

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Chicago to Sydney found on KAYAK in the last 72 hours.
13/7Sat
2 stops
32h 47mORD-SYD
$1,601
25/5Sat
2 stops
26h 50mORD-SYD
$1,726
25/5Sat
1 stopAir Canada
24h 40mORD-SYD
$1,880
13/7Sat
3 stops
35h 00mORD-SYD
$1,948
25/5Sat
3 stopsAir Canada
31h 35mORD-SYD
$2,183
13/7Sat
1 stopANA
24h 40mORD-SYD
$2,368
31/5Fri
1 stopAir India
28h 10mORD-SYD
$4,273
6/5Mon
1 stopAir India
28h 10mORD-SYD
$4,395
6/5Mon
3 stops
56h 55mORD-SYD
$4,772
30/5Thu
2 stopsThai Airways
42h 50mORD-SYD
$7,052

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Last minute flights from O'Hare Intl to Sydney

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Chicago to Sydney that are departing in the next 10 days.
28/4Sun
multi-stopCathay Pacific
25h 40mORD-SYD
13/5Mon
multi-stopCathay Pacific
31h 35mSYD-ORD
$2,070
25/4Thu
multi-stopCathay Pacific
25h 40mORD-SYD
1/5Wed
multi-stopCathay Pacific
45h 50mSYD-ORD
$2,296
25/4Thu
multi-stopCathay Pacific
25h 40mORD-SYD
13/5Mon
multi-stopCathay Pacific
31h 35mSYD-ORD
$2,364
25/4Thu
multi-stopCathay Pacific
25h 40mORD-SYD
6/5Mon
multi-stopCathay Pacific
45h 50mSYD-ORD
$2,388
25/4Thu
multi-stop
25h 40mORD-SYD
13/5Mon
multi-stop
37h 57mSYD-ORD
$2,622
25/4Thu
multi-stop
25h 40mORD-SYD
14/5Tue
multi-stop
31h 45mSYD-ORD
$2,658
28/4Sun
multi-stopAir New Zealand
25h 45mORD-SYD
13/5Mon
multi-stopAir New Zealand
29h 33mSYD-ORD
$3,582
24/4Wed
multi-stopAir Canada
31h 29mORD-SYD
4/5Sat
multi-stopAir Canada
26h 24mSYD-ORD
$3,732
24/4Wed
multi-stopAir Canada
31h 25mORD-SYD
7/5Tue
multi-stopAir Canada
37h 41mSYD-ORD
$3,849
27/4Sat
multi-stopUnited Airlines
42h 35mORD-SYD
6/5Mon
multi-stopUnited Airlines
20h 22mSYD-ORD
$4,482

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Chicago O'Hare Airport - Sydney Flights

Departure:

Chicago O'Hare Airport (ORD)United States

Destination:

Sydney (SYD)Australia

Return flight deals:

Sydney - Chicago O'Hare Airport

Cabin classes:

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