SYD - ORD

$921 Find Cheap Flights from Sydney to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sydney to O'Hare Intl departing on 9/10. 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 Chicago O'Hare Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Chicago.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Chicago.
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Everything you should know

Cheapest return fare
$1,673
Typical prices: $1,972-$1,348
Multiple Airlines
Mon 18/5Tue 2/6
SYD - ORD • 1 stop
Cheapest one-way flight
$921
Typical prices: $1,083-$1,314
Multiple Airlines
Fri 9/10
SYD - ORD • 3 stops
Top airlines
Cheapest • from $1,926 (return)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Sydney and O'Hare Intl. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg $1,501 (return)
Shortest trip • 20h 15m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 22% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 30% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to O'Hare Intl!
Flight Deals
Booking Insights
Flight Deals

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

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

Mon, 18 May - Tue, 2 Jun
Multiple Airlines Logo
17:50 - 06:39
SYD
-
ORD
27h 49m
1 stop
Multiple Airlines Logo
07:40 - 07:30
ORD
-
SYD
32h 50m
2 stops
$1,673Multiple Airlines
Tue, 12 May - Tue, 2 Jun
Multiple Airlines Logo
17:50 - 06:39
SYD
-
ORD
27h 49m
1 stop
Multiple Airlines Logo
21:37 - 07:30
ORD
-
SYD
42h 53m
2 stops
$1,792Multiple Airlines
Tue, 19 May - Wed, 3 Jun
Multiple Airlines Logo
17:50 - 06:39
SYD
-
ORD
27h 49m
1 stop
Multiple Airlines Logo
07:40 - 07:30
ORD
-
SYD
32h 50m
2 stops
$1,817Multiple Airlines
Mon, 20 Jul - Mon, 10 Aug
Multiple Airlines Logo
17:50 - 06:17
SYD
-
ORD
27h 27m
1 stop
Multiple Airlines Logo
09:28 - 07:30
ORD
-
SYD
31h 02m
2 stops
$1,826Multiple Airlines
Tue, 19 May - Wed, 3 Jun
Multiple Airlines Logo
17:50 - 06:39
SYD
-
ORD
27h 49m
1 stop
Multiple Airlines Logo
06:00 - 07:30
ORD
-
SYD
34h 30m
2 stops
$1,835Multiple Airlines
Mon, 20 Jul - Thu, 13 Aug
Multiple Airlines Logo
17:50 - 06:17
SYD
-
ORD
27h 27m
1 stop
Multiple Airlines Logo
09:28 - 11:50
ORD
-
SYD
35h 22m
2 stops
$1,851Multiple Airlines
Mon, 20 Jul - Sat, 15 Aug
Multiple Airlines Logo
17:50 - 06:17
SYD
-
ORD
27h 27m
1 stop
Multiple Airlines Logo
16:10 - 11:50
ORD
-
SYD
28h 40m
2 stops
$1,884Multiple Airlines
Tue, 2 Jun - Thu, 11 Jun
Multiple Airlines Logo
17:50 - 07:55
SYD
-
ORD
53h 05m
2 stops
Multiple Airlines Logo
21:13 - 07:30
ORD
-
SYD
43h 17m
1 stop
$1,894Multiple Airlines
Wed, 22 Jul - Thu, 13 Aug
Multiple Airlines Logo
17:50 - 06:17
SYD
-
ORD
27h 27m
1 stop
Multiple Airlines Logo
09:28 - 11:50
ORD
-
SYD
35h 22m
2 stops
$1,912Multiple Airlines
Mon, 25 May - Mon, 1 Jun
Multiple Airlines Logo
17:50 - 06:34
SYD
-
ORD
27h 44m
1 stop
Multiple Airlines Logo
07:40 - 07:30
ORD
-
SYD
32h 50m
2 stops
$1,917Multiple Airlines
Booking Insights

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

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sydney to Chicago O'Hare Intl Airport, 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 Sydney to Chicago O'Hare Intl Airport is September, where tickets cost $1,300 (return) on average. On the other hand, the most expensive months are January and April, where the average cost of round-trip tickets is $4,094 and $2,034 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sydney to Chicago O'Hare Intl Airport, 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 Sydney to Chicago O'Hare Intl Airport, you should book around 2 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$921
Best time to beat the crowds but there is an average 121% increase in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Sydney to Chicago O'Hare Airport

When to book flights from Sydney to O'Hare Intl

Are your dates flexible? Find out the best times to travel from Sydney to O'Hare Intl 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 Sydney to Chicago O'Hare Airport flights

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

    In the last 3 days, the lowest price for a flight from Sydney to Chicago O'Hare Intl Airport was $921 for a one-way ticket and $1,673 for a return.

  • Which airports will I be using when flying from Sydney to Chicago O'Hare Airport?

    On your way to Chicago O'Hare Airport, you’ll fly out from Sydney Kingsford Smith. You’ll be landing at Chicago O'Hare Intl.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Sydney to Chicago are ANA and Air New Zealand. With an average price for the route of $1,631 and an overall rating of 8.3, ANA is the most popular choice. Air New Zealand is also a great choice for the route, with an average price of $1,467 and an overall rating of 8.0.

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

    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 Sydney to Chicago O'Hare Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport from Sydney 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 Sydney to Chicago O'Hare Airport?

    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 Chicago O'Hare Airport with an airline and back to Sydney with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sydney to Chicago O'Hare Airport?

    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 Chicago O'Hare Airport from Sydney up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from Sydney to O'Hare Intl

 
See real verified KAYAK customer reviews for airlines flying from Sydney to Chicago. 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 Sydney to O'Hare Intl? 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.
8.0
Air New ZealandOverall score based on 639 reviews
8.5Crew
8.2Boarding
7.4Entertainment
8.0Comfort
7.4Food
Airline reviews

Great airline service by the staff. I highly recommend it

10.0 ExcellentManish, Apr 2026
SFO - AKL
Read more Air New Zealand reviews

Great airline service by the staff. I highly recommend it

Time to upgrade those planes so you can provide first class.

The flight was smooth and on time. Entertainment options were lacking and there was no food, other than some very boring snacks.

A better selection of entertainment would have been nice. I found nothing that appealed to me as a middle-aged traveler. The flight attendants were gracious, helpful, and attentive. It also would have been nice to have more bathrooms as the flight was full and the plane was big.

The Air New Zealand product is terrible, it's as expensive as a Jetstar ticket with add ons but with surely staff and old aircraft.

Wonderful trip. Everyone from checking in to the gate to the flight itself was amazing - kind, helpful, and has a beautiful smile.

This flight was the second leg of a trip that began in Auckland, New Zealand. I was unable to find a way to select seats in advance. The boarding passes we were given in Auckland did not have seat assignments for the second flight. There was no way to check on it until personnel showed up at the gate in Los Angeles, immediately before boarding time. The flight was overbooked by one, and since I was traveling with my sister, we needed two seats. We waited in considerable anxiety for everyone else to board and when one person did not show up, we had to take whatever was left. At least we finally got on the flight although we were the very last to board. We were not able to sit together, of course.

The Premium Economy seats were very comfortable and the food was quite tasty. I did not use the entertainment system, but I was able to charge my phone and tablet with the seatback connection.

Nothing better than Air New Zealand. Top scores in every category.

We had difficulty checking in as United didn’t recognize the confirmation number and the agent was not helpful. We went to the United Assistance desk where the agent was able to process our reservation. We also weren’t allowed to choose seats in advance.

Loved the food and beverages available, spacious economy class, excellent entertainment

Very good overall. Highly recommend for all flying to Australia

We had bulkhead seats in a A380 in the upper deck in seats 31 D and E. Storage was very limited other than in overhead bin - which is not within reach when in seat. Yet paying same price as others in premium economy who have a lot more storage within arm’s reach. Seems very unfair.

On the Qantas flight, I could barely hear some of the announcements. It was better when I could read them on the screen.

Good check in and helpful staff. Delayed for 1 hour. Took about 45 Mins to get baggage’s at DFW . Food was average ( Hindu meal ) . Overall it was good experience

Our boarding and flight was very good. However when we landed and pulled in to the gate it took 55 minutes for the jet bridge to be positioned next to the aircraft. That caused us to miss our ground transportation and it caused us unnecessary last minute transit planning and expense. Our flight was AA1733 on March 17, 2026

We booked with Qantas instead of Delta and we instead flew on American Airlines. American is not our favorite to go on. No leg room and the width of seats are a joke. Your are packed like sardines on American flights.

When I originally booked this flight, I was expecting to travel on Qantas. When the itinerary changed and the long-haul segment was operated by American Airlines, we were disappointed but remained open-minded. Unfortunately, the overall service experience fell far short of expectations. This was a long-haul international flight. Getting up periodically to use the restroom or stretch is inevitable, especially on flights of this duration. However, each time we stood up, we felt as though we were inconveniencing the crew. The tone and body language often suggested that we were in the way or disrupting something simply by moving about the cabin. As a result, I avoided getting up as often as I needed to and was physically very sore upon arrival. Meal service was similarly impersonal. The options were presented in single words “beef or veggie,” “pasta or beef” without any description of what was actually being served. There was little engagement or courtesy beyond that. Even simple expressions of gratitude were often not acknowledged. I am accustomed to no-frills travel and do not expect luxury. What was disappointing was not the absence of extras, but the absence of basic warmth and professionalism. On a long-haul international flight, small moments of courtesy and humanity make a significant difference. In this case, the experience felt transactional and dismissive rather than welcoming. I hope this feedback is taken constructively, as there is a meaningful difference between efficient service and indifferent service.

Flight arrived late with no one to help over 30 people rebook. I slept at the airport.

Business seats not as comfortable or private as most competitors (e.g. Qantas was outstanding), and movie selection was much more limited than Qantas or United has been recently

Flight crew was super friendly and helpful. Food was frequent and honestly pretty good. Plenty of on-board entertainment. Economy seats are super cramped for such a long flight, but the crew allowed people to get up and stretch, and kids could wander with their parents, so we all made it work. Overall a very good experience.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Starlink is great Crew was polite Business class didn’t get a welcome drink just water and snacks were ok

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Very comfortable flight, snacks and drinks were good, good communication from crew. Could have used a little more information on timing of boarding for group 5

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Very good I can’t complain one bit. Thank you American Airlines for making my flight enjoyable and safe!

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

The new planes (American Eagle) are beautiful and especially comfortable. The flight attendants are consistently professional and courteous. And, while it may seem inconsequential, the new liquid tube of coffee creamer—in contrast to the powdered coffee creamer—makes all the difference in a cup of coffee.

I'm not sure American is capable of on-time arrivals and departures. When you land at ORD, you almost always get held on the tarmac because your gate is still occupied. I may have missed my connection, but that ended up up being significantly delayed as well. Once again, I finally got home well after midnight.

Didn't make it back on American Airlines due to a maintenance issue. The communication and updates were terrible. I ended up returning on Aero Mexico which had a much nicer aircraft with a large entertainment screen with movies and shows AND they had a nice inflight meal. That was a treat after being delayed 26 hours! I think some additional flight miles, or something should be offered for that long of a delay ---it was not pleasant at all---very physical and emotional experience.

Crew at the gate was very crabby and not at all polite. The plane was very hot the entire flight. And the seat cushion was very worn out.

The staff are very, very professional. It's what flying should feel like.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

Delays with no explanation. It could have been handled better.

Flight itself was not bad at all. However: my checked bag (checked in Calgary) did not make it onto this flight as I found out after I landed at EWR. I still don't have it but it appears that it is on its way to me.

Flight and attendance were very good we had 2 hour delay that took the shine of it

After 3 hours of delays, they ended up cancelling my flight. And although I could purchase one-way tickets to get to my destination, they would not offer me these flights as compensation for the cancelled flight, and I didn't end up making it home until 13 hours after I was originally supposed to arrive. It made for an extremely strenuous end to an otherwise good trip.

Be careful about the bad policy and when purchasing seats

It's kindof ridiculous that your system is even asking me about this since my flight was canceled and I wasn't rescheduled.

The flight attendants were not very nice. No smiles On my return trip I was charged for one bag $83.30 although I had purchased the flight including one piece of luggage. Can this be refunded to me? Thank you!

Bad service as well. Another 3hr delayed flight from chicago to Charlotte.

Very bad service the way back we was on the way for r two days very bad condition and waiting for luggage till now

United had no (zero) record of our flight. It took over an hour of us standing in line with surly employee while others waited to get resolved. I have never experienced such poor service and poor empathy.

Or the greatest and it ended up picking us up from Chicago to Toronto not sure who was tesponsible for the 4 hr delay. United should have been properly prepared for a scheduled flight from Austin to Chicago and they were not.

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

Information on your arrival and departure airports