Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Sydney to Chicago from $685

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Chicago departing on 18/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Sydney to Chicago

Cheap return flights

Enter your travel dates to find the best prices.
Qantas Airways Logo
11:20 - 16:08SYD-ORD
21h 48m1 stop
Qantas Airways Logo
11:45 - 09:00ORD-SYD
28h 15m1 stop
$1,474Qantas Airways
Find Deal
Mon, 24 Nov - Tue, 9 Dec
United Airlines Logo
11:50 - 07:41SYD-ORD
36h 51m1 stop
United Airlines Logo
06:55 - 09:15ORD-SYD
33h 20m1 stop
$1,590United Airlines
Find Deal
Sat, 29 Nov - Sun, 14 Dec
American Airlines Logo
14:05 - 23:31SYD-ORD
26h 26m1 stop
American Airlines Logo
13:39 - 09:00ORD-SYD
26h 21m1 stop
$1,597American Airlines
Find Deal
Sun, 30 Nov - Wed, 31 Dec
American Airlines Logo
11:20 - 17:10SYD-ORD
22h 50m2 stops
American Airlines Logo
10:25 - 06:55ORD-SYD
27h 30m1 stop
$1,603American Airlines
Find Deal
Sun, 23 Nov - Sun, 30 Nov
Air Canada Logo
09:20 - 14:43SYD-ORD
20h 23m1 stop
Air Canada Logo
15:40 - 07:20ORD-SYD
24h 40m1 stop
$1,611Air Canada
Find Deal
Fri, 24 Apr - Thu, 30 Apr
Air Canada Logo
11:20 - 08:00SYD-ORD
37h 40m2 stops
Air Canada Logo
20:15 - 09:35ORD-SYD
44h 20m2 stops
$1,637Air Canada
Find Deal
Sun, 23 Nov - Sun, 30 Nov
American Airlines Logo
09:10 - 17:24SYD-ORD
23h 14m1 stop
American Airlines Logo
16:45 - 07:05ORD-SYD
23h 20m2 stops
$1,651American Airlines
Find Deal
Sat, 25 Apr - Fri, 1 May
United Airlines Logo
11:20 - 18:45SYD-ORD
24h 25m2 stops
United Airlines Logo
16:16 - 06:20ORD-SYD
21h 04m1 stop
$1,901United Airlines
Find Deal
Thu, 25 Dec - Thu, 22 Jan
Delta Logo
10:40 - 00:02SYD-ORD
30h 22m2 stops
Delta Logo
07:05 - 08:30ORD-SYD
32h 25m2 stops
$2,033Delta
Find Deal
Thu, 25 Dec - Fri, 23 Jan
Delta Logo
14:15 - 09:25SYD-ORD
36h 10m2 stops
Delta Logo
06:50 - 08:30ORD-SYD
32h 40m2 stops
$2,303Delta
Find Deal
Thu, 25 Dec - Fri, 23 Jan

Qantas Airways flights from Sydney to Chicago O'Hare Intl Airport

Our best Qantas Airways deals on Sydney to Chicago O'Hare Intl Airport flight tickets
Qantas Airways
24 Nov
SYD11:20Sydney Kingsford Smith
21h 48m
1 stop
ORD16:08Chicago O'Hare Intl
9 Dec
ORD11:45Chicago O'Hare Intl
28h 15m
1 stop
SYD09:00Sydney Kingsford Smith
$1,474
Find similar
Qantas Airways
8 Nov
SYD14:05Sydney Kingsford Smith
20h 12m
1 stop
ORD17:17Chicago O'Hare Intl
15 Nov
ORD18:04Chicago O'Hare Intl
43h 06m
1 stop
SYD06:10Sydney Kingsford Smith
$1,854
Find similar

Delta flights from Sydney to Chicago O'Hare Intl Airport

Our best Delta deals on Sydney to Chicago O'Hare Intl Airport flight tickets
Delta
25 Dec
SYD10:40Sydney Kingsford Smith
30h 22m
2 stops
ORD00:02Chicago O'Hare Intl
23 Jan
ORD07:05Chicago O'Hare Intl
32h 25m
2 stops
SYD08:30Sydney Kingsford Smith
$2,033
Find similar
Delta
25 Dec
SYD14:15Sydney Kingsford Smith
36h 10m
2 stops
ORD09:25Chicago O'Hare Intl
23 Jan
ORD06:50Chicago O'Hare Intl
32h 40m
2 stops
SYD08:30Sydney Kingsford Smith
$2,303
Find similar
Delta
17 Dec
SYD10:40Sydney Kingsford Smith
38h 59m
2 stops
ORD08:39Chicago O'Hare Intl
22 Jan
ORD08:50Chicago O'Hare Intl
30h 40m
2 stops
SYD08:30Sydney Kingsford Smith
$2,492
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Sydney to Chicago O'Hare Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 78,305 searches. Data last updated 6 November 2025.
Use the filters below to find and compare flights from Sydney to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 24/11

11:20-16:08

1 stop21h 48m

Chicago O'Hare Intl

Tue 9/12

11:45-09:00

1 stop28h 15m

$1,474

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 29/11

11:50-07:41

1 stop36h 51m

Chicago O'Hare Intl

Sun 14/12

06:55-09:15

1 stop33h 20m

$1,590

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sun 30/11

14:05-23:31

1 stop26h 26m

Chicago O'Hare Intl

Wed 31/12

13:39-09:00

1 stop26h 21m

$1,597

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sun 23/11

11:20-17:10

2 stops22h 50m

Chicago O'Hare Intl

Sun 30/11

10:25-06:55

1 stop27h 30m

$1,603

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 24/4

09:20-14:43

1 stop20h 23m

Chicago O'Hare Intl

Thu 30/4

15:40-07:20

1 stop24h 40m

$1,611

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sun 23/11

11:20-08:00

2 stops37h 40m

Chicago O'Hare Intl

Sun 30/11

20:15-09:35

2 stops44h 20m

$1,637

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 25/4

09:10-17:24

1 stop23h 14m

Chicago O'Hare Intl

Fri 1/5

16:45-07:05

2 stops23h 20m

$1,651

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 25/12

11:20-18:45

2 stops24h 25m

Chicago O'Hare Intl

Thu 22/1

16:16-06:20

1 stop21h 04m

$1,901

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 25/12

10:40-00:02

2 stops30h 22m

Chicago O'Hare Intl

Fri 23/1

07:05-08:30

2 stops32h 25m

$2,033

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 25/12

14:15-09:25

2 stops36h 10m

Chicago O'Hare Intl

Fri 23/1

06:50-08:30

2 stops32h 40m

$2,303

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Chicago from

How to get the cheapest flight ticket from Sydney to Chicago O'Hare Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Sydney and Chicago O'Hare Intl Airport?

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

The month of February is, on average, the cheapest month to fly to Chicago O'Hare Intl Airport from Sydney, with most prices found around $1,118. If you are unable to visit Chicago O'Hare Intl Airport during the month of February, then departing from Sydney during the month May is also very affordable. Most momondo users find prices during this month for around $1,146.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart from Sydney to Chicago O'Hare Intl Airport is on a Monday. Travellers who choose to depart for Chicago O'Hare Intl Airport on a Monday will often find tickets for as low as $1,869. The most expensive day to fly to Chicago O'Hare Intl Airport is Sunday, with ticket prices averaging around $2,276.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Our data shows that the cheapest Sydney to Chicago O'Hare Intl Airport flights are usually those with departure times in the afternoon. Our users have found flights to Chicago O'Hare Intl Airport in the afternoon for as low as $1,776. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is in the morning when prices are around $2,014.

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

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $1,499 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Sydney for as low as $1,195 on momondo.

Can stopping save me money on Sydney to Chicago O'Hare Intl Airport flights?

You could potentially save up to 56% on your flight if you consider stops on a Sydney to Chicago O'Hare Intl Airport flight.

How have Sydney to Chicago O'Hare Intl Airport flight prices changed over time?

As of November 2025, prices for Sydney to Chicago O'Hare Intl Airport flights are approximately 55% cheaper when compared to flights at the same time last year.

When to book flights from Sydney to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Sydney to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Sydney to Chicago O'Hare Intl Airport (SYD to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sydney to Chicago O'Hare Intl Airport

Direct flights

None
There are no direct flights from Sydney to Chicago O'Hare Intl Airport. There are no popular flight routes from Sydney to Chicago O'Hare Intl Airport.
Search flight deals

  • How far is Sydney Kingsford Smith to Chicago O'Hare Intl by plane?

    There are 14845.8 km between Sydney Kingsford Smith and Chicago O'Hare Intl. Flights usually cover this in 20h 04m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Chicago O'Hare Intl Airport?

    Prices for flights from Sydney Kingsford Smith Airport to Chicago O'Hare Intl Airport refresh daily.

  • How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Chicago O'Hare Intl Airport?

  • How old do you have to be to fly from Sydney Kingsford Smith Airport to Chicago O'Hare Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Sydney Kingsford Smith Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The necessary travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sydney to Chicago O'Hare Intl Airport?

Best airlines flying from Sydney to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Sydney to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free cancellation
Price
Qantas AirwaysPriceFrom $1,013Free cancellationRating
7.5
929 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $1,201Free cancellationRating
7.2
11,040 reviews
Search American Airlines flights
Air CanadaPriceFrom $1,204Free cancellationRating
7.1
10,415 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,533Free cancellationRating
8.0
526 reviews
Search Air New Zealand flights
ANAPriceFrom $1,618Free cancellationRating
8.4
1,003 reviews
Search ANA flights
United AirlinesPriceFrom $1,671Free cancellationRating
7.4
9,004 reviews
Search United Airlines flights

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Rosemont
Naperville

Why use momondo?

Why should I use momondo to find a flight deal from Sydney to Chicago?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Sydney to Chicago. momondo saves you time and could save you money on your trip.

Can I find flights from Sydney to Chicago with flexible booking policies on momondo?

Flights from Sydney to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Sydney to Chicago?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sydney to Chicago.

I’m not ready to book a flight from Sydney to Chicago right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Sydney to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.

An easier way to manage your Chicago O'Hare Intl Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 6/12
Sat 13/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago