SYD - ORD

$461 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 9/3. 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

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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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

Tue, Aug 12 - Tue, Aug 19
Air New Zealand Logo
9:55 am - 9:18 pmSYD-ORD
26h 23m2 stops
Air New Zealand Logo
4:30 pm - 8:45 amORD-SYD
25h 15m2 stops
$1,051Air New Zealand
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Tue, Aug 12 - Tue, Aug 19
 Logo
5:45 pm - 6:14 pmSYD-ORD
39h 29m1 stop
 Logo
3:09 pm - 2:40 pmORD-SYD
32h 31m2 stops
$1,063
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Tue, Jul 22 - Sat, Aug 9
 Logo
9:20 am - 6:03 amSYD-ORD
35h 43m3 stops
 Logo
3:18 pm - 11:45 amORD-SYD
29h 27m3 stops
$1,094
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Sun, Aug 10 - Sun, Aug 24
American Airlines Logo
9:10 am - 12:24 amSYD-ORD
30h 14m1 stop
American Airlines Logo
8:30 am - 6:05 amORD-SYD
30h 35m1 stop
$1,103American Airlines
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Sat, Sep 13 - Sun, Sep 21
ANA Logo
11:50 am - 4:59 amSYD-ORD
32h 09m2 stops
ANA Logo
5:45 pm - 9:25 amORD-SYD
24h 40m1 stop
$1,104ANA
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Wed, Jul 16 - Sat, Aug 9
ANA Logo
8:55 pm - 8:40 amSYD-ORD
26h 45m1 stop
ANA Logo
7:40 pm - 7:15 pmORD-SYD
32h 35m2 stops
$1,112ANA
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Sun, Aug 10 - Sun, Aug 24
American Airlines Logo
9:10 am - 3:55 pmSYD-ORD
21h 45m1 stop
American Airlines Logo
3:56 pm - 7:05 amORD-SYD
24h 09m2 stops
$1,140American Airlines
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Thu, Aug 21 - Wed, Aug 27
Alaska Airlines Logo
9:40 pm - 5:00 amSYD-ORD
46h 20m2 stops
Alaska Airlines Logo
2:07 pm - 7:45 pmORD-SYD
38h 38m2 stops
$1,178Alaska Airlines
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Thu, Aug 21 - Thu, Aug 28
Alaska Airlines Logo
9:40 pm - 5:00 amSYD-ORD
46h 20m2 stops
Alaska Airlines Logo
2:07 pm - 7:45 pmORD-SYD
38h 38m2 stops
$1,191Alaska Airlines
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Thu, Aug 7 - Wed, Aug 20
Qantas Airways Logo
9:10 am - 3:55 pmSYD-ORD
21h 45m1 stop
Qantas Airways Logo
7:03 pm - 7:05 amORD-SYD
21h 02m1 stop
$1,425Qantas Airways
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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’s the cheapest day of the week to fly from Sydney to Chicago O'Hare Airport?

The average price of all round-trip flights from Sydney to Chicago O'Hare Intl Airport clicked on KAYAK for each day over the last 12 months.

For Sydney to Chicago O'Hare Airport, Monday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Chicago O'Hare Airport back to Sydney, the best deals are generally found on Saturday, with Thursday being the most expensive.

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 February, where tickets cost $741 (return) on average. On the other hand, the most expensive months are December and September, where the average cost of round-trip tickets is $1,730 and $1,183 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 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonJanuary
High seasonDecember
Cheapest flight$461
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 70% increase in price.
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 $461 for a one-way ticket and $1,051 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?

    oneworld, Star Alliance, and SkyTeam 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 American Airlines?

    The two airlines most popular with KAYAK users for flights from Sydney to Chicago are Qantas Airways and American Airlines. With an average price for the route of $762 and an overall rating of 7.5, Qantas Airways is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,296 and an overall rating of 7.2.

  • 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 860 reviews
7.7Boarding
6.9Food
8.2Crew
7.1Entertainment
7.4Comfort
Airline reviews

Traditional economy class. Not a full flight so spare seats. Food and drinks were good

10.0 ExcellentPeter, Jun 2025MEL - HKG
Read more Qantas Airways reviews

Traditional economy class. Not a full flight so spare seats. Food and drinks were good

Was bumped to a later flight because of inefficiency on part of the airline.

Inflight entertainment, poor that there are no headrest screens on aircraft used for an international flight.

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

Pretty excellent. I don’t know what the pilot could have done better with the bumping ( there was a storm) nor what happened to my ears coming down into bendigo. It doesn’t happen coming down into Sydney just the return flight. I wonder why?

Touch screens were very difficult to use, generally being laggy and unresponsive- it was quite an art to get it to play the thing you wanted rather than some thing at random. Selection of films and Tv was good when touchscreen decided to finally respond.

Their aircraft are old and amenities lack way behind other international carriers leaving from BNE. Even in economy

Airport and crew experience was excellent. We had to queue for the runway - no one’s fault, but it did mean we were 30 minutes late leaving

Overall good experience with flight and airport wheelchair staff. Also got Indian food in the flights

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Not sure the logic of the boarding in Groups. I was loaded first on the aisle. Then the guy in the middle. Then the guy by the window. Constantly holding up the other people boarding behind them with us blocking the aisle and this happened in most of the other rows

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Crew professional. Easy bag drop off. On time. Good entertainment.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Per usual, flight status, staff courtesy and professionalism were excellent

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

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

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