Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Chicago O'Hare Intl Airport to Sydney from $758

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Sydney departing on 1/5. 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.

Find the cheapest flights from Chicago O'Hare Intl Airport to Sydney

Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from Chicago O'Hare Intl Airport to Sydney.
 Logo
11:53 - 12:15ORD-SYD
33h 22m2 stops
 Logo
13:15 - 06:42SYD-ORD
32h 27m2 stops
$1,491
Find Deal
Thu, 1 May - Thu, 8 May
 Logo
11:53 - 12:15ORD-SYD
33h 22m2 stops
 Logo
13:15 - 08:50SYD-ORD
34h 35m3 stops
$1,542
Find Deal
Thu, 1 May - Thu, 8 May
Air Canada Logo
10:40 - 07:20ORD-SYD
29h 40m2 stops
Air Canada Logo
09:20 - 16:42SYD-ORD
22h 22m1 stop
$1,654Air Canada
Find Deal
Wed, 10 Sep - Wed, 24 Sep
Air Canada Logo
08:40 - 07:20ORD-SYD
31h 40m2 stops
Air Canada Logo
09:20 - 07:59SYD-ORD
37h 39m2 stops
$1,656Air Canada
Find Deal
Sun, 18 May - Sun, 25 May
Fiji Airways Logo
18:45 - 11:45ORD-SYD
26h 00m2 stops
Fiji Airways Logo
13:45 - 20:24SYD-ORD
21h 39m2 stops
$1,835Fiji Airways
Find Deal
Sat, 3 May - Sat, 10 May
Fiji Airways Logo
18:45 - 11:45ORD-SYD
26h 00m2 stops
Fiji Airways Logo
13:45 - 20:24SYD-ORD
21h 39m2 stops
$1,865Fiji Airways
Find Deal
Sat, 3 May - Sat, 10 May
Qantas Airways Logo
17:38 - 07:05ORD-SYD
22h 27m1 stop
Qantas Airways Logo
09:10 - 15:44SYD-ORD
21h 34m1 stop
$2,141Qantas Airways
Find Deal
Mon, 2 Jun - Mon, 23 Jun
Qantas Airways Logo
18:45 - 07:05ORD-SYD
21h 20m1 stop
Qantas Airways Logo
14:30 - 17:32SYD-ORD
20h 02m1 stop
$2,143Qantas Airways
Find Deal
Mon, 8 Sep - Mon, 8 Dec
United Airlines Logo
19:40 - 07:00ORD-SYD
20h 20m1 stop
United Airlines Logo
10:20 - 14:55SYD-ORD
19h 35m1 stop
$2,303United Airlines
Find Deal
Sun, 1 Jun - Tue, 17 Jun
United Airlines Logo
12:45 - 07:00ORD-SYD
27h 15m2 stops
United Airlines Logo
09:30 - 14:39SYD-ORD
20h 09m1 stop
$2,309United Airlines
Find Deal
Sun, 8 Jun - Tue, 24 Jun

Air Canada flights from Chicago O'Hare Intl Airport to Sydney

Our best Air Canada deals on Chicago O'Hare Intl Airport to Sydney flight tickets
Air Canada
10 Sept
ORD10:40Chicago O'Hare Intl
29h 40m
2 stops
SYD07:20Sydney Kingsford Smith
24 Sept
SYD09:20Sydney Kingsford Smith
22h 22m
1 stop
ORD16:42Chicago O'Hare Intl
Air Canada
18 May
ORD08:40Chicago O'Hare Intl
31h 40m
2 stops
SYD07:20Sydney Kingsford Smith
25 May
SYD09:20Sydney Kingsford Smith
37h 39m
2 stops
ORD07:59Chicago O'Hare Intl
Air Canada
7 May
ORD10:40Chicago O'Hare Intl
29h 40m
2 stops
SYD07:20Sydney Kingsford Smith
28 May
SYD09:20Sydney Kingsford Smith
37h 39m
2 stops
ORD07:59Chicago O'Hare Intl

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

Our best Fiji Airways deals on Chicago O'Hare Intl Airport to Sydney flight tickets
Fiji Airways
3 May
ORD18:45Chicago O'Hare Intl
26h 00m
2 stops
SYD11:45Sydney Kingsford Smith
10 May
SYD13:45Sydney Kingsford Smith
21h 39m
2 stops
ORD20:24Chicago O'Hare Intl
Fiji Airways
3 May
ORD18:45Chicago O'Hare Intl
26h 00m
2 stops
SYD11:45Sydney Kingsford Smith
10 May
SYD13:45Sydney Kingsford Smith
21h 39m
2 stops
ORD20:24Chicago O'Hare Intl
Fiji Airways
10 May
ORD18:45Chicago O'Hare Intl
26h 00m
2 stops
SYD11:45Sydney Kingsford Smith
17 May
SYD06:00Sydney Kingsford Smith
29h 24m
2 stops
ORD20:24Chicago O'Hare Intl

See travel insights to Sydney from

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

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 cheapest month to fly to Sydney?

The month of March is, on average, the cheapest month to fly to Sydney from Chicago O'Hare Intl Airport, with most prices found around $1,355. If you aren’t able to travel to Sydney during the month of March, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $1,400.

What is the cheapest day to depart on your flight to Sydney?

Our data shows that Sunday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,867. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,564.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from Chicago O'Hare Intl Airport to Sydney in the afternoon for as low as $2,184. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are $3,339 on average. Flights to Sydney from Chicago O'Hare Intl Airport at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to Sydney?

You are more likely to see cheaper flights to Sydney from Chicago O'Hare Intl Airport when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,772 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Chicago O'Hare Intl Airport for as low as $1,333 on momondo.

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

As of April 2025, prices for Chicago O'Hare Intl Airport to Sydney flights are approximately 59% cheaper when compared to flights at the same time last year.

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

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

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

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

Best price found

$758

Fastest flight time

20h 20m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from Chicago O'Hare Intl Airport in the past 72 hours is $758. The best return flight deal from Chicago O'Hare Intl Airport to Sydney found on momondo in the last 72 hours is $1,491.
The fastest flight from Chicago O'Hare Intl Airport to Sydney takes 20h 20m
There are no direct flights from Chicago O'Hare Intl Airport to Sydney. Popular non-direct route for this connection is Chicago O'Hare Intl Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

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

    A flight from Chicago O'Hare Intl to Sydney Kingsford Smith will travel around 14845.8 km. In terms of flight time, this usually takes a little over 20h 20m.

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

    Prices for flights from Chicago O'Hare Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

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

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

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The necessary travel and health documents for your Sydney Kingsford Smith 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 Chicago O'Hare Intl Airport to Sydney?


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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Sydney with momondo
Airline
Rating
Free cancellation
Price
Qantas AirwaysPriceFrom $1,350Free cancellationRating
7.5
815 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $1,727Free cancellationRating
7.0
9,034 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,902Free cancellationRating
7.4
8,621 reviews
Search United Airlines flights

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Terrigal
Lithgow
Penrith
Leura
Manly
Coogee
Cronulla
Bondi Beach
Randwick
Charlestown
Newport
Swansea

Why use momondo?

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

Finding the right flight to Sydney from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Chicago to Sydney flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Chicago.

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

If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from Chicago and alert you when they change.


An easier way to manage your Sydney 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Wed 9/4
Wed 16/4

Find better results for your trip to Australia