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Cheap flights from Denver to Sydney from $583

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 12/29. 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 - 6:05 pm
SYD
-
DEN
24h 45m2 stops
$954Air Canada
Tue, Feb 3 - Wed, Feb 25
Air Canada Logo
4:11 pm - 7:20 am
DEN
-
SYD
23h 09m1 stop
Air Canada Logo
6:30 am - 12:33 pm
SYD
-
DEN
22h 03m2 stops
$969Air Canada
Tue, Apr 14 - Tue, Apr 21
Air Canada Logo
3:53 pm - 2:40 pm
DEN
-
SYD
28h 47m2 stops
Air Canada Logo
11:20 am - 6:07 pm
SYD
-
DEN
24h 47m2 stops
$974Air Canada
Tue, Jan 27 - Tue, Feb 3
Multiple Airlines Logo
7:05 pm - 7:20 am
DEN
-
SYD
20h 15m1 stop
Multiple Airlines Logo
7:00 pm - 12:38 pm
SYD
-
DEN
33h 38m2 stops
$979Multiple Airlines
Sun, Apr 5 - Sat, Apr 18
Air Canada Logo
3:53 pm - 3:55 pm
DEN
-
SYD
30h 02m2 stops
Air Canada Logo
11:20 am - 4:33 pm
SYD
-
DEN
23h 13m1 stop
$987Air Canada
Wed, Feb 11 - Wed, Feb 25
Air Canada Logo
7:50 pm - 12:40 pm
DEN
-
SYD
24h 50m2 stops
Air Canada Logo
7:00 am - 5:00 pm
SYD
-
DEN
26h 00m2 stops
$989Air Canada
Mon, May 11 - Tue, May 19
Multiple Airlines Logo
9:05 pm - 9:35 am
DEN
-
SYD
42h 30m2 stops
Multiple Airlines Logo
9:55 pm - 12:28 pm
SYD
-
DEN
32h 33m2 stops
$992Multiple Airlines
Sat, Feb 7 - Sat, Feb 14
Multiple Airlines Logo
7:05 pm - 11:40 am
DEN
-
SYD
24h 35m2 stops
Multiple Airlines Logo
7:00 pm - 4:34 pm
SYD
-
DEN
37h 34m2 stops
$995Multiple Airlines
Sun, Apr 5 - Sat, Apr 18
Air Canada Logo
11:42 am - 9:35 am
DEN
-
SYD
27h 53m2 stops
Air Canada Logo
11:20 am - 12:37 pm
SYD
-
DEN
19h 17m1 stop
$997Air Canada
Mon, Feb 9 - Sat, Feb 28
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
$999Air Canada
Sun, Feb 1 - Fri, Feb 13

Air Canada flights from Denver to Sydney

Our best Air Canada deals on Denver to Sydney flight tickets
Air Canada
Feb 3
DEN7:05 pmDenver Intl
20h 30m
1 stop
SYD9:35 amSydney Kingsford Smith
Feb 10
SYD11:20 amSydney Kingsford Smith
23h 10m
1 stop
DEN4:30 pmDenver Intl
$954
Find similar
Air Canada
Apr 14
DEN7:05 pmDenver Intl
20h 15m
1 stop
SYD7:20 amSydney Kingsford Smith
Apr 21
SYD7:00 amSydney Kingsford Smith
21h 38m
2 stops
DEN12:38 pmDenver Intl
$969
Find similar
Air Canada
Jan 27
DEN3:53 pmDenver Intl
28h 47m
2 stops
SYD2:40 pmSydney Kingsford Smith
Feb 3
SYD11:20 amSydney Kingsford Smith
19h 17m
1 stop
DEN12:37 pmDenver Intl
$974
Find similar

Qantas Airways flights from Denver to Sydney

Our best Qantas Airways deals on Denver to Sydney flight tickets
Qantas Airways
May 5
DEN4:42 pmDenver Intl
22h 48m
1 stop
SYD7:30 amSydney Kingsford Smith
May 19
SYD9:10 amSydney Kingsford Smith
19h 18m
1 stop
DEN12:28 pmDenver Intl
$1,110
Find similar
Qantas Airways
Mar 13
DEN8:04 pmDenver Intl
19h 56m
1 stop
SYD9:00 amSydney Kingsford Smith
Mar 21
SYD11:20 amSydney Kingsford Smith
17h 59m
1 stop
DEN12:19 pmDenver Intl
$1,134
Find similar
Qantas Airways
Feb 26
DEN8:04 pmDenver Intl
18h 56m
1 stop
SYD9:00 amSydney Kingsford Smith
Mar 7
SYD5:45 pmSydney Kingsford Smith
19h 48m
1 stop
DEN7:33 pmDenver Intl
$1,135
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 14, 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

Tue 2/3

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Wed 2/25

11:20 am-6:05 pm

2 stops24h 45m

$954

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 4/14

4:11 pm-7:20 am

1 stop23h 09m

Sydney Kingsford Smith

Tue 4/21

6:30 am-12:33 pm

2 stops22h 03m

$969

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 1/27

3:53 pm-2:40 pm

2 stops28h 47m

Sydney Kingsford Smith

Tue 2/3

11:20 am-6:07 pm

2 stops24h 47m

$974

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 4/5

7:05 pm-7:20 am

1 stop20h 15m

Sydney Kingsford Smith

Sat 4/18

7:00 pm-12:38 pm

2 stops33h 38m

$979

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 2/11

3:53 pm-3:55 pm

2 stops30h 02m

Sydney Kingsford Smith

Wed 2/25

11:20 am-4:33 pm

1 stop23h 13m

$987

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 5/11

7:50 pm-12:40 pm

2 stops24h 50m

Sydney Kingsford Smith

Tue 5/19

7:00 am-5:00 pm

2 stops26h 00m

$989

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 2/7

9:05 pm-9:35 am

2 stops42h 30m

Sydney Kingsford Smith

Sat 2/14

9:55 pm-12:28 pm

2 stops32h 33m

$992

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 4/5

7:05 pm-11:40 am

2 stops24h 35m

Sydney Kingsford Smith

Sat 4/18

7:00 pm-4:34 pm

2 stops37h 34m

$995

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 2/9

11:42 am-9:35 am

2 stops27h 53m

Sydney Kingsford Smith

Sat 2/28

11:20 am-12:37 pm

1 stop19h 17m

$997

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/1

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Fri 2/13

11:20 am-12:37 pm

1 stop19h 17m

$999

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 $1,075 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 15m

Direct flights

None
The fastest flight from Denver to Sydney takes 20h 15m
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 15m.

  • 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
Fiji AirwaysPriceFrom $684Free CancellationRating
8.1
210 reviews
Search Fiji Airways flights
Alaska AirlinesPriceFrom $745Free CancellationRating
8.0
11,450 reviews
Search Alaska Airlines flights
DeltaPriceFrom $786Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Qantas AirwaysPriceFrom $803Free CancellationRating
7.5
946 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $826Free CancellationRating
7.2
11,054 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
9,094 reviews
Search United Airlines flights
Air CanadaPriceFrom $980Free CancellationRating
7.1
10,522 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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