Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

ORD - SYD

Find cheap flights from Chicago O'Hare Airport to Sydney from $554

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 8/7. 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
0 bags
Wed 6/12
Wed 6/19

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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Sydney.
In the last 7 days travelers have searched 41,771,603 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

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
5:06 pm - 7:05 amORD-SYD
22h 59m1 stop
9:10 am - 2:19 pmSYD-ORD
20h 09m1 stop
$1,028Qantas Airways
Find Deal
Tue, Sep 3 - Wed, Sep 11
6:24 pm - 7:05 amORD-SYD
21h 41m1 stop
9:10 am - 11:56 pmSYD-ORD
29h 46m1 stop
$1,029Qantas Airways
Find Deal
Tue, Sep 3 - Wed, Sep 18
6:00 am - 7:05 amORD-SYD
34h 05m1 stop
9:10 am - 4:09 pmSYD-ORD
21h 59m1 stop
$1,077American Airlines
Find Deal
Sun, Sep 1 - Wed, Sep 18
11:50 am - 7:05 amORD-SYD
28h 15m1 stop
9:10 am - 2:19 pmSYD-ORD
20h 09m1 stop
$1,083American Airlines
Find Deal
Sun, Sep 1 - Wed, Sep 11
8:45 am - 7:20 amORD-SYD
31h 35m2 stops
9:20 am - 2:21 pmSYD-ORD
20h 01m1 stop
$1,142Air Canada
Find Deal
Sun, Aug 4 - Sun, Aug 18
10:55 am - 8:20 amORD-SYD
29h 25m2 stops
11:20 am - 4:50 pmSYD-ORD
22h 30m2 stops
$1,145Air Canada
Find Deal
Wed, Oct 23 - Tue, Nov 5
4:50 pm - 8:45 amORD-SYD
24h 55m2 stops
11:50 am - 5:33 amSYD-ORD
32h 43m2 stops
$1,264Air New Zealand
Find Deal
Sun, Sep 1 - Fri, Sep 20
3:45 pm - 10:35 amORD-SYD
27h 50m2 stops
9:55 am - 8:50 pmSYD-ORD
25h 55m2 stops
$1,287Air New Zealand
Find Deal
Sun, Sep 1 - Mon, Sep 9
1:10 pm - 6:55 amORD-SYD
26h 45m1 stop
9:30 am - 2:35 pmSYD-ORD
20h 05m1 stop
$1,378United Airlines
Find Deal
Sun, Jun 23 - Tue, Jul 9
7:36 pm - 7:55 amORD-SYD
20h 19m1 stop
2:00 pm - 4:50 pmSYD-ORD
19h 50m1 stop
$1,380United Airlines
Find Deal
Sun, Oct 20 - Tue, Nov 5

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.
When flying from Chicago O'Hare Airport to Sydney, you should consider leaving on a Tuesday and avoid Mondays if you are looking for the best rates. For your return to Chicago O'Hare Airport, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

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 February, where tickets cost $1,195 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is $2,143 and $1,795 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 2 days before departure. For the absolute cheapest price, our data suggests you should book 28 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.
The cheapest return flight ticket from Chicago O'Hare Airport to Sydney found by KAYAK users in the last 72 hours was for $1,028 on Qantas Airways, followed by American Airlines ($1,077). One-way flight deals have also been found from as low as $999 on ANA and from $1,009 on Japan Airlines.

Good to know

Low season

July

High season

February

Cheapest flight

$554
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 9% lower 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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 $554 for a one-way ticket and $1,028 for a round-trip.

  • Do I need a passport to fly between Chicago O'Hare Airport and Sydney?

    Yes

  • 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.

  • What is the most popular layover when flying to Sydney from Chicago O'Hare Airport?

    Los Angeles is the most popular layover city among KAYAK users traveling from Chicago O'Hare Airport to Sydney.

  • Which is the best airline for flights from Chicago to Sydney, ANA or Japan Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Sydney are ANA and Japan Airlines. With an average price for the route of $2,078 and an overall rating of 8.4, ANA is the most popular choice. Japan Airlines is also a great choice for the route, with an average price of $2,317 and an overall rating of 8.3.

  • 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 travelers 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 round-trip ticket. You could then fly to Sydney with an airline and back to Chicago O'Hare Airport with another airline. Booking your flights between Chicago O'Hare Airport and SYD can sometimes prove cheaper using this method.

  • 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 ORD 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 5 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 630 reviews
7.9Entertainment
8.1Comfort
8.4Boarding
8.8Crew
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!

Good food and entertainment options. Great Staff that were all welcoming and caregiving.

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.

Flight was canceled due to technical issue shortly before the check-in counters opened. Passengers were rebooked on a flight three days later. Request to be accommodated on Air Tahiti Nui could not be processed. Customer service sorted out the refund after calling and being put on hold for almost an hour.

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

The international flight from Sydney to Dallas had great food. I have travelled a lot over the years and this has been the most memorable in my experience so far.

flight delayed, wait in crowded gate. staff inattentive. had to remind them to get my coat from their closet. not many new movies, media choices were limited (nothing compared to Emirates.) Lounge was crowded

flight delayed, wait in crowded gate. staff inattentive. had to remind them to get my coat from their closet. not many new movies, media choices were limited (nothing compared to Emirates.)

Initial flight was cancelled so moved to an alternative flight. As a result, stuck in a middle seat. Flight then place in holding pattern prior to landing resulting in a very late trip home.

There was nothing I didn’t like, prices a little lower would help

Flight delay was informed at the last minute. Food quality is not up to Qantas standard I was unable to book an online boarding pass on any of my 6 flights.

Rescheduled after ticket purchased and issued, not 2 or 3 times and not a fourth but by 5 times, by Qantas, that's right, 5 changes! Forcing an overnight stay in Chile and need for visa. Qantas can no longer provide basic services as a national or international service provider. Professionalism is extinct and the provider needs to be mentored and educated in perfecting who to operate as an airline. Qantas is the spirit of Australian dissatisfaction.

Amazing! Was put on the earlier flight and I requested for an aisle seat and was given it. Thanks Qantas!

The crew were amazing - A great job. They made me feel special and valued.

Boarding was terrible - the ground staff member Fredeya at lax was more military than customer service, have never encountered a customer service representative as rude as her. Apart from that all other staff were wonderful and the flight was good.

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

I’ve had a couple flights this week on United that were delayed by an hour or more

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

Nothing beats ANA customer service on my opinion. Maybe because of their Japanese culture (and food). Arigatō

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.

It was spectacular. I had basic Economy and was given so much space and their seats lean back so far. Staff was superb, food was superb, everything was superb, Finnair is Fantastic.

Good flights. Departure and arrivals were on time. DFW was a little problematic in that the Skytrain without prior notice bypassed the Echo terminal so that delayed my arrival at my connecting flight.

Because I can’t stand very long in one place, I was allowed to reword.

We were delayed bc ground crew gave the flight crew the wrong paperwork. We taxiied to the runway then back to the gate to get the correct paperwork that no one bothered reviewing the first time we pushed back. Boarding was rude and stressful like it always is. Gate agents and flight attendants are all over 55 years of age, embittered by years of underpayment From AA leading to their passive agressive bitchiness for no reason.

Boarding time was easy & quick. Crew was excellent. In-flight entertainment was great/easy. Seats are too small and not enough room between rows: felt like a sardine/very cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

Excellent- plan was barely populated. I cannot remember a flight where I was able/encouraged to stretch out!

The food at Admirals Club was really great Pijamas were a nice feature The flight attendant was very nice and great attitude The aa.com does not work well specially internet service Overall a very good flight .

Great flight. Boarding was efficient and quick. On time departure and smooth flight. Flight arrived early at destination. Good experience.

Had technical issue which delayed the flight period. Flight crew knew there was 5 passengers that the connecting flight was within 15 minutes once at the gate. Rather than identify the 5 passengers to assure they got first. The flight attended mentioned it but didn't assist to assure passengers with connecting flights off first. This caused a hardship and our party of 3 missed the connecting flight.

They canceled the flight on us very close to the flight date .

It took 66 hours to get from Seattle to Tel Aviv. As a minor, I was left for more than 12 hours in Toronto and Frankfurt without hotel and food vouchers. It took 5 layovers. It was insane and not okay

It was delayed but got us to YYZ. I had great copassengers.

Flew SEA-CA, then CA-NRT. First flight was short but very uncomfortable, dirty, and had very small overhead storage space. The seats and fans were not cleaned and had visible dirt on them. Second flight was perfect.

My second flight ended up being through United and it was fine. Again, just frustrating that it was so late.

My experience was pretty frustrating because the first leg of my flight on United (though booked through Air Canada) was delayed causing me to miss my connecting flight on Air Canada. This could have been an easy solve as there was a direct flight later that morning via Air Canada that they easily could have put me on which would have only gotten me to my destination 2 1/2 hours later but because United and Air Canada don’t seem to have good communication they gave me the run around both telling me to talk with the other which I did three times to no avail. I ended up taking the delayed flight and getting on a new connecting flight which ended up getting me to my destination 6 hours later and I missed the event I was planning to go to this evening.

Everything went smoothly and as expected. We were on time and one flight arrived early.

First time flying Air Canada and the trip was very pleasant! They did a great job getting us out of Toronto and into Rome (early!) For an international flight it was very enjoyable.

This is not a Business Class equipped airplane and even the crew apologize before take over BUT BUT Air Canada charged full business class fare

All was good, except our baggage was lost for most of a day. We are thankful that it was found quickly and delivered to our hotel. Rouge was fine outside of that problem.

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.
8/7Wed
2 stops
48h 57mORD-SYD
$554
8/7Wed
2 stops
41h 05mORD-SYD
$563
9/17Tue
1 stopANA
34h 30mORD-SYD
$999
9/8Sun
1 stopJapan Airlines
27h 05mORD-SYD
$1,009
10/3Thu
1 stopANA
34h 30mORD-SYD
$1,062
6/3Mon
1 stopAir Canada
24h 40mORD-SYD
$1,075
5/27Mon
1 stopAir Canada
24h 40mORD-SYD
$1,079
8/6Tue
1 stopJapan Airlines
26h 45mORD-SYD
$1,098
8/5Mon
1 stopQantas Airways
23h 02mORD-SYD
$1,244
5/25Sat
1 stopQantas Airways
43h 46mORD-SYD
$1,687

Search by stops

Search by airline

Search by price

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.
5/16Thu
multi-stopCathay Pacific
27h 45mORD-SYD
5/27Mon
multi-stopCathay Pacific
31h 35mSYD-ORD
$1,817
5/16Thu
multi-stop
24h 40mORD-SYD
5/27Mon
multi-stop
31h 45mSYD-ORD
$1,852
5/14Tue
multi-stop
25h 45mORD-SYD
5/20Mon
multi-stop
25h 13mSYD-ORD
$1,869
5/14Tue
multi-stopAir Canada
31h 29mORD-SYD
5/20Mon
multi-stopAir Canada
37h 41mSYD-ORD
$1,930
5/14Tue
multi-stopAir Canada
31h 35mORD-SYD
5/20Mon
multi-stopAir Canada
37h 41mSYD-ORD
$1,936
5/14Tue
multi-stopQantas Airways
21h 05mORD-SYD
5/20Mon
multi-stopQantas Airways
29h 13mSYD-ORD
$1,953
5/16Thu
multi-stopQantas Airways
26h 50mORD-SYD
5/18Sat
multi-stopQantas Airways
29h 13mSYD-ORD
$2,045
5/16Thu
multi-stopAir New Zealand
26h 54mORD-SYD
5/18Sat
multi-stopAir New Zealand
42h 13mSYD-ORD
$2,292
5/16Thu
multi-stopAir New Zealand
25h 30mORD-SYD
5/18Sat
multi-stopAir New Zealand
43h 53mSYD-ORD
$2,356
5/16Thu
multi-stopSingapore Airlines
41h 30mORD-SYD
5/27Mon
multi-stopSingapore Airlines
40h 45mSYD-ORD
$4,312

Search by stops

Search by airline

Search by price

Chicago O'Hare Airport - Sydney Flights

Departure:

Chicago O'Hare Airport (undefined)United States

Destination:

Sydney (SYD)Australia

Return flight deals:

Sydney - Chicago O'Hare Airport

Cabin classes:

Browse destinations: