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Cheap flights from Chicago to Sydney from $701

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 to Sydney departing on 15/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from Chicago to Sydney.
 Logo
18:59 - 11:45ORD-SYD
25h 46m2 stops
 Logo
13:15 - 06:42SYD-ORD
32h 27m2 stops
$1,580
Find Deal
Tue, 3 Jun - Tue, 10 Jun
 Logo
18:59 - 11:45ORD-SYD
25h 46m2 stops
 Logo
13:15 - 05:25SYD-ORD
31h 10m3 stops
$1,595
Find Deal
Tue, 3 Jun - Tue, 10 Jun
 Logo
18:59 - 21:55ORD-SYD
35h 56m3 stops
 Logo
13:15 - 06:42SYD-ORD
32h 27m2 stops
$1,767
Find Deal
Tue, 3 Jun - Tue, 10 Jun
Fiji Airways Logo
18:45 - 11:45ORD-SYD
26h 00m2 stops
Fiji Airways Logo
13:45 - 20:24SYD-ORD
21h 39m2 stops
$1,841Fiji Airways
Find Deal
Sat, 3 May - Sat, 17 May
Fiji Airways Logo
19:03 - 11:45ORD-SYD
25h 42m2 stops
Fiji Airways Logo
13:45 - 21:02SYD-ORD
22h 17m2 stops
$1,900Fiji Airways
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Air Canada Logo
15:35 - 08:20ORD-SYD
24h 45m1 stop
Air Canada Logo
10:20 - 16:42SYD-ORD
22h 22m1 stop
$2,092Air Canada
Find Deal
Tue, 14 Oct - Wed, 22 Oct
Air Canada Logo
15:35 - 10:40ORD-SYD
28h 05m2 stops
Air Canada Logo
09:20 - 14:55SYD-ORD
20h 35m1 stop
$2,121Air Canada
Find Deal
Tue, 2 Sep - Wed, 24 Sep
Qantas Airways Logo
14:45 - 08:05ORD-SYD
25h 20m1 stop
Qantas Airways Logo
13:10 - 17:23SYD-ORD
20h 13m1 stop
$2,126Qantas Airways
Find Deal
Wed, 15 Oct - Wed, 22 Oct
Qantas Airways Logo
15:52 - 06:55ORD-SYD
24h 03m1 stop
Qantas Airways Logo
09:10 - 17:42SYD-ORD
23h 32m1 stop
$2,128Qantas Airways
Find Deal
Wed, 27 Aug - Wed, 3 Sep
United Airlines Logo
15:54 - 06:55ORD-SYD
24h 01m1 stop
United Airlines Logo
10:20 - 14:53SYD-ORD
19h 33m1 stop
$2,284United Airlines
Find Deal
Wed, 30 Jul - Sun, 24 Aug

Fiji Airways flights from Chicago to Sydney

Our best Fiji Airways deals on Chicago to Sydney flight tickets
Fiji Airways
3 May
ORD18:45Chicago O'Hare Intl
26h 00m
2 stops
SYD11:45Sydney Kingsford Smith
17 May
SYD13:45Sydney Kingsford Smith
21h 39m
2 stops
ORD20:24Chicago O'Hare Intl
Fiji Airways
13 Sept
ORD19:03Chicago O'Hare Intl
25h 42m
2 stops
SYD11:45Sydney Kingsford Smith
20 Sept
SYD13:45Sydney Kingsford Smith
22h 17m
2 stops
ORD21:02Chicago O'Hare Intl
Fiji Airways
10 May
ORD18:45Chicago O'Hare Intl
26h 00m
2 stops
SYD11:45Sydney Kingsford Smith
17 May
SYD13:45Sydney Kingsford Smith
21h 39m
2 stops
ORD20:24Chicago O'Hare Intl

Air New Zealand flights from Chicago to Sydney

Our best Air New Zealand deals on Chicago to Sydney flight tickets
Air New Zealand
30 July
ORD12:45Chicago O'Hare Intl
37h 25m
2 stops
SYD17:10Sydney Kingsford Smith
6 Aug
SYD11:50Sydney Kingsford Smith
27h 09m
2 stops
ORD23:59Chicago O'Hare Intl
Air New Zealand
28 July
ORD12:54Chicago O'Hare Intl
28h 51m
2 stops
SYD08:45Sydney Kingsford Smith
7 Aug
SYD11:50Sydney Kingsford Smith
26h 22m
2 stops
ORD23:12Chicago O'Hare Intl
Air New Zealand
27 Aug
ORD16:30Chicago O'Hare Intl
25h 15m
2 stops
SYD08:45Sydney Kingsford Smith
7 Sept
SYD11:50Sydney Kingsford Smith
32h 11m
2 stops
ORD05:01Chicago O'Hare Intl

See travel insights to Sydney from

How to get the cheapest flight ticket from Chicago 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 typical price of a round-trip flight between Chicago and Sydney?

What is the cheapest month to fly to Sydney?

The month of August is, on average, the cheapest month to fly to Sydney from Chicago, with most prices found around $1,355. If you aren’t able to travel to Sydney during the month of August, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,375.

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 $1,851. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,542.

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 to Sydney in the afternoon for as low as $2,165. 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 $3,310 on average. Flights to Sydney from Chicago 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 when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,732 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 for as low as $1,322 on momondo.

How have Chicago to Sydney flight prices changed over time?

As of April 2025, prices for Chicago to Sydney flights are approximately 57% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to Sydney

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

Cheap Chicago to Sydney (CHI to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Sydney

Best price found

$701

Fastest flight time

20h 20m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from Chicago in the past 72 hours is $701. The best return flight deal from Chicago to Sydney found on momondo in the last 72 hours is $1,580.
The fastest flight from Chicago to Sydney takes 20h 20m
There are no direct flights from Chicago to Sydney. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Sydney Kingsford Smith Airport and Chicago Midway Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

  • How far is Chicago to Sydney Kingsford Smith by plane?

    Chicago and Sydney Kingsford Smith are 14866.2 km apart from one another. A reasonable flight in good conditions will take 20h 20m.

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

    Prices for flights from Chicago to Sydney Kingsford Smith Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago 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 to Sydney?


Best airlines flying from Chicago to Sydney

Compare and see reviews for airlines that fly from Chicago to Sydney with momondo
Airline
Rating
Free cancellation
Price
Qantas AirwaysPriceFrom $1,338Free cancellationRating
7.5
822 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $1,712Free cancellationRating
7.0
9,164 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,886Free cancellationRating
7.4
8,677 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
Terrigal
Katoomba
Lithgow
Penrith
Leura
Coogee
Manly
Cronulla
Bondi Beach
Randwick
Charlestown
Newport
Swansea

Why use momondo?

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

It is quick and easy to find Chicago to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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

Yes. momondo enables you to select and highlight flights to Sydney from Chicago with this policy.

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.


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