SYD - ORD

$619 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 5/17. 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, 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 Sydney to Chicago, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$902
Overall average: $1,384
Air Canada
Mon 4/20Thu 4/30
SYD - ORD • 2 stops
Cheapest one-way
$619
Typical prices: $710-$1,095
Air New Zealand
Sun 5/17
SYD - ORD • 2 stops
Top airlines
Cheapest • from $902 (round-trip)
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Sydney and O'Hare Intl. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Cheapest • Avg $1,010 (round-trip)
Shortest trip • 19h 36m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 27% 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 100s 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 round-trip 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 round-trip flight deals from Sydney to O'Hare Intl

Mon, Apr 20 - Thu, Apr 30
Air Canada Logo
9:20 am - 4:35 pm
SYD
-
ORD
22h 15m
2 stops
Air Canada Logo
3:40 pm - 7:20 am
ORD
-
SYD
24h 40m
1 stop
$902Air Canada
Mon, Apr 20 - Thu, Apr 30
Air Canada Logo
9:20 am - 8:05 pm
SYD
-
ORD
25h 45m
2 stops
Air Canada Logo
9:50 am - 7:20 am
ORD
-
SYD
30h 30m
2 stops
$906Air Canada
Thu, Apr 30 - Thu, May 7
Air Canada Logo
9:20 am - 8:08 pm
SYD
-
ORD
49h 48m
2 stops
Air Canada Logo
3:40 pm - 7:20 am
ORD
-
SYD
24h 40m
1 stop
$930Air Canada
Fri, May 1 - Fri, May 8
Multiple Airlines Logo
1:15 pm - 5:35 am
SYD
-
ORD
31h 20m
2 stops
Multiple Airlines Logo
5:15 am - 10:10 pm
ORD
-
SYD
49h 55m
2 stops
$934Multiple Airlines
Wed, Apr 22 - Sun, Apr 26
Air Canada Logo
9:20 am - 8:00 am
SYD
-
ORD
37h 40m
2 stops
Air Canada Logo
9:20 pm - 7:20 am
ORD
-
SYD
43h 00m
2 stops
$945Air Canada
Thu, Apr 30 - Thu, May 7
Air Canada Logo
9:20 am - 8:15 pm
SYD
-
ORD
25h 55m
1 stop
Air Canada Logo
3:40 pm - 7:20 am
ORD
-
SYD
24h 40m
1 stop
$948Air Canada
Wed, Apr 22 - Sun, Apr 26
Air Canada Logo
9:20 am - 2:45 pm
SYD
-
ORD
20h 25m
1 stop
Air Canada Logo
9:20 pm - 7:20 am
ORD
-
SYD
43h 00m
2 stops
$964Air Canada
Wed, Jul 15 - Sun, Aug 23
Air Canada Logo
9:20 am - 2:41 pm
SYD
-
ORD
20h 21m
1 stop
Air Canada Logo
3:40 pm - 12:40 pm
ORD
-
SYD
30h 00m
2 stops
$972Air Canada
Wed, Jul 15 - Sun, Aug 23
Air Canada Logo
9:20 am - 6:18 pm
SYD
-
ORD
23h 58m
2 stops
Air Canada Logo
3:40 pm - 10:40 am
ORD
-
SYD
28h 00m
2 stops
$980Air Canada
Sun, Apr 26 - Sun, May 3
Multiple Airlines Logo
1:15 pm - 5:35 am
SYD
-
ORD
31h 20m
2 stops
Multiple Airlines Logo
5:15 am - 11:50 am
ORD
-
SYD
39h 35m
2 stops
$990Multiple 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.

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 $931 (return) on average. On the other hand, the most expensive months are January and April, where the average cost of round-trip tickets is $2,951 and $1,384 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 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$619
Best time to beat the crowds but there is an average 130% increase in price.
Most popular time to fly and prices are also 17% 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 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 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 $619 for a one-way ticket and $902 for a round-trip.

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

    Yes

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

    When flying out of Sydney you will be using Sydney Kingsford Smith. You will be landing at Chicago O'Hare Airport, also known as 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?

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

  • Which is the best airline for flights from Sydney to Chicago, Qantas Airways or United Airlines?

    The two airlines most popular with KAYAK users for flights from Sydney to Chicago are Qantas Airways and United Airlines. With an average price for the route of $1,007 and an overall rating of 7.5, Qantas Airways is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,279 and an overall rating of 7.4.

  • 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 travelers 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 round-trip ticket. You could then fly to Chicago O'Hare Airport with an airline and back to Sydney with another airline. Booking your flights between Sydney and ORD 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 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 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.
7.5
Qantas AirwaysOverall score based on 1005 reviews
7.0Food
8.1Crew
7.2Entertainment
7.7Boarding
7.4Comfort
Airline reviews

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.

6.0 GoodLarry, Mar 2026
AKL - LAX
Read more Qantas Airways reviews

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

Hard to move and get out of my seat when the passenger in front is in recline position.

It was a good flight and no complaints. It just wasn't anything that was better than any other flight.

The crew were wonderful - if only the customers were as well behaved as the attendants!! Ha ha! If you could just talk to God and ask for less turbulence next time.... Juuuuust kidding....

Basic airline, aircraft and service. AA gets you from point A to B. My flight was delayed by 2 hours too.

No internet on flight, which makes log travels really hard.

My flight from Dallas to Sydney was cancelled. My entire trip was rerouted to include the following: Hartford to Washington DC Washington DC to JFK JFK to Auckland Auckland to Christchurch I paid for an aisle seat on the flight to Auckland and was asked if I would take a window seat to accommodate a family. The agent at the podium failed to mention that the family had a 3 month old baby and that a bassinet would be used during the 16 hour flight. The only way I could get out of my seat was to crawl under the bassinet of the sleeping baby. I think it is wrong that I was no given the choice to sit in another seat, that the agent knew what she was doing and chose to not properly disclose my seating arrangement. Terrible treatment.

Would've been great if Lufthansa union cockpit pilots didn't strike for 2 days and caused a chaos to my returning plans to USA, and then after rebooking a flight 2 days later tge plane departed 35 min later. So I did not have a good experience.

They never clean the toilet, and the food is worse

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Chargers didn’t work, no entertainment and we had to wait for taxiing for easily 40 minutes after arriving early. Bags were late too!

No real complaints. The in flight food was much better than I expected. The in flight entertainment was excellent.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Horrible Flight significantly delayed. Not due to united issue. But trying to rebook connection flight and get information about overnight accommodation was difficult. Agent did not seem to care or have any interest to help.

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

This Japanese airline provides great service and very helpful in assisting their passengers.

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

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

Information on your arrival and departure airports