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Cheap flights from Denver to Sydney from $529

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Sydney departing on 2/12. 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
0 bags

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Find the cheapest flights from Denver to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
7:05 pm - 9:35 am
DEN
-
SYD
20h 30m1 stop
Air Canada Logo
11:20 am - 12:37 pm
SYD
-
DEN
19h 17m1 stop
$906Air Canada
Sun, Feb 1 - Sun, Feb 15
Air Canada Logo
7:05 pm - 9:35 am
DEN
-
SYD
20h 30m1 stop
Air Canada Logo
11:20 am - 12:28 pm
SYD
-
DEN
19h 08m1 stop
$910Air Canada
Sun, Feb 1 - Sun, Feb 15
Air Canada Logo
7:05 pm - 2:40 pm
DEN
-
SYD
25h 35m2 stops
Air Canada Logo
11:20 am - 6:05 pm
SYD
-
DEN
24h 45m2 stops
$924Air Canada
Sun, Feb 1 - Sun, Feb 15
Air Canada Logo
7:05 pm - 2:40 pm
DEN
-
SYD
25h 35m2 stops
Air Canada Logo
11:20 am - 6:05 pm
SYD
-
DEN
24h 45m2 stops
$929Air Canada
Sun, Feb 1 - Sun, Feb 15
Air Canada Logo
7:05 pm - 9:35 am
DEN
-
SYD
20h 30m1 stop
Air Canada Logo
10:20 am - 12:37 pm
SYD
-
DEN
19h 17m1 stop
$953Air Canada
Tue, Mar 3 - Tue, Mar 10
Air Canada Logo
11:42 am - 9:35 am
DEN
-
SYD
27h 53m2 stops
Air Canada Logo
10:20 am - 12:37 pm
SYD
-
DEN
19h 17m1 stop
$954Air Canada
Tue, Mar 3 - Tue, Mar 10
Air Canada Logo
7:05 pm - 9:35 am
DEN
-
SYD
20h 30m1 stop
Air Canada Logo
9:20 am - 12:33 pm
SYD
-
DEN
19h 13m1 stop
$958Air Canada
Sun, Mar 1 - Sun, Apr 5
Air Canada Logo
7:05 pm - 9:35 am
DEN
-
SYD
20h 30m1 stop
Air Canada Logo
8:00 am - 12:37 pm
SYD
-
DEN
21h 37m2 stops
$968Air Canada
Sun, Mar 1 - Sun, Mar 15
Multiple Airlines Logo
7:05 pm - 9:35 am
DEN
-
SYD
20h 30m1 stop
Multiple Airlines Logo
8:00 am - 12:37 pm
SYD
-
DEN
21h 37m2 stops
$973Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
11:42 am - 9:35 am
DEN
-
SYD
27h 53m2 stops
Multiple Airlines Logo
9:30 pm - 12:37 pm
SYD
-
DEN
32h 07m2 stops
$978Multiple Airlines
Tue, Mar 3 - Tue, Mar 10

United Airlines flights from Denver to Sydney

Our best United Airlines deals on Denver to Sydney flight tickets
United Airlines
Dec 24
DEN1:25 pmDenver Intl
23h 35m
1 stop
SYD7:00 amSydney Kingsford Smith
Jan 19
SYD12:10 pmSydney Kingsford Smith
18h 13m
1 stop
DEN12:23 pmDenver Intl
$1,663
Find similar
United Airlines
Dec 24
DEN10:14 amDenver Intl
26h 06m
2 stops
SYD6:20 amSydney Kingsford Smith
Jan 11
SYD11:20 amSydney Kingsford Smith
21h 10m
1 stop
DEN2:30 pmDenver Intl
$1,667
Find similar
United Airlines
Dec 24
DEN7:37 pmDenver Intl
19h 28m
1 stop
SYD9:05 amSydney Kingsford Smith
Jan 17
SYD12:10 pmSydney Kingsford Smith
18h 13m
1 stop
DEN12:23 pmDenver Intl
$1,713
Find similar

Delta flights from Denver to Sydney

Our best Delta deals on Denver to Sydney flight tickets
Delta
Dec 24
DEN11:55 amDenver Intl
26h 35m
2 stops
SYD8:30 amSydney Kingsford Smith
Jan 23
SYD10:40 amSydney Kingsford Smith
29h 56m
2 stops
DEN10:36 pmDenver Intl
$1,718
Find similar
Delta
Dec 24
DEN11:55 amDenver Intl
26h 35m
2 stops
SYD8:30 amSydney Kingsford Smith
Jan 11
SYD10:40 amSydney Kingsford Smith
24h 54m
2 stops
DEN5:34 pmDenver Intl
$1,761
Find similar
Delta
Dec 24
DEN5:30 amDenver Intl
33h 00m
2 stops
SYD8:30 amSydney Kingsford Smith
Jan 11
SYD10:40 amSydney Kingsford Smith
24h 54m
2 stops
DEN5:34 pmDenver Intl
$1,762
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Sydney 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 832,500 searches. Data last updated December 10, 2025.
Use the filters below to find and compare flights from Denver to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/1

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Sun 2/15

11:20 am-12:37 pm

1 stop19h 17m

$906

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/1

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Sun 2/15

11:20 am-12:28 pm

1 stop19h 08m

$910

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/1

7:05 pm-2:40 pm

2 stops25h 35m

Sydney Kingsford Smith

Sun 2/15

11:20 am-6:05 pm

2 stops24h 45m

$924

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/1

7:05 pm-2:40 pm

2 stops25h 35m

Sydney Kingsford Smith

Sun 2/15

11:20 am-6:05 pm

2 stops24h 45m

$929

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 3/3

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Tue 3/10

10:20 am-12:37 pm

1 stop19h 17m

$953

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 3/3

11:42 am-9:35 am

2 stops27h 53m

Sydney Kingsford Smith

Tue 3/10

10:20 am-12:37 pm

1 stop19h 17m

$954

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 3/1

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Sun 4/5

9:20 am-12:33 pm

1 stop19h 13m

$958

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 3/1

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Sun 3/15

8:00 am-12:37 pm

2 stops21h 37m

$968

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 3/2

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Mon 3/9

8:00 am-12:37 pm

2 stops21h 37m

$973

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 3/3

11:42 am-9:35 am

2 stops27h 53m

Sydney Kingsford Smith

Tue 3/10

9:30 pm-12:37 pm

2 stops32h 07m

$978

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Denver 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?

In general, April is the cheapest month to fly from Denver to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $864. If you are unable to visit Sydney during the month of April, then departing from Denver during the month May is also very affordable. Most momondo users find prices during this month for around $865.

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

The cheapest day to depart from Denver to Sydney is on a Tuesday when prices can be found for as low as $1,197. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,362.

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 at noon. momondo users have found flights departing from Denver to Sydney at noon for as low as $933. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $1,292. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Sydney from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,074 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Denver for as low as $990 on momondo.

Can stopping save me money on Denver to Sydney flights?

You could potentially save up to 5% on your flight if you consider stops on a Denver to Sydney flight.

How have Denver to Sydney flight prices changed over time?

As of December 2025, prices for Denver to Sydney flights are approximately 49% cheaper when compared to flights at the same time last year.

When to book flights from Denver to Sydney

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

Cheap Denver to Sydney (DEN to SYD) flight deals and tips

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

Fastest flight time

20h 25m

Direct flights

None
The fastest flight from Denver to Sydney takes 20h 25m
There are no direct flights from Denver to Sydney. There are no popular flight routes from Denver to Sydney.
Search flight deals

  • How far is Denver Intl to Sydney Kingsford Smith by plane?

    Denver Intl and Sydney Kingsford Smith are 8325.4 mi apart from one another. A reasonable flight in good conditions will take 20h 25m.

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

    Prices for flights from Denver Intl Airport to Sydney Kingsford Smith Airport are updated daily.

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

  • How old do you have to be to fly from Denver 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 Denver 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 license 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 Denver to Sydney?

Best airlines flying from Denver to Sydney

Compare and see reviews for airlines that fly from Denver to Sydney with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $745Free CancellationRating
8.0
11,426 reviews
Search Alaska Airlines flights
DeltaPriceFrom $786Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Fiji AirwaysPriceFrom $791Free CancellationRating
8.1
210 reviews
Search Fiji Airways flights
Qantas AirwaysPriceFrom $804Free CancellationRating
7.5
947 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $827Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
Air New ZealandPriceFrom $834Free CancellationRating
8.0
552 reviews
Search Air New Zealand flights
United AirlinesPriceFrom $853Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
Air CanadaPriceFrom $980Free CancellationRating
7.1
10,514 reviews
Search Air Canada flights

Traveling to a place near Sydney?

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

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Sydney from Denver.

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

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

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

Once you have performed a search for Denver to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

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

An easier way to manage your Sydney trip

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