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Cheap flights from Denver to Sydney from $654

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 12/31. 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.
Multiple Airlines Logo
6:05 am - 12:35 pm
DEN
-
SYD
36h 30m2 stops
Multiple Airlines Logo
2:00 pm - 11:31 pm
SYD
-
DEN
27h 31m2 stops
$823Multiple Airlines
Fri, Jan 23 - Fri, Jan 30
Multiple Airlines Logo
12:00 pm - 9:00 am
DEN
-
SYD
27h 00m1 stop
Multiple Airlines Logo
11:20 am - 9:00 pm
SYD
-
DEN
27h 40m2 stops
$1,023Multiple Airlines
Sat, Feb 7 - Sat, Feb 14
Multiple Airlines Logo
6:05 am - 9:00 am
DEN
-
SYD
32h 55m1 stop
Multiple Airlines Logo
5:45 pm - 3:56 am
SYD
-
DEN
28h 11m2 stops
$1,037Multiple Airlines
Mon, Feb 9 - Thu, Feb 19
Multiple Airlines Logo
10:43 pm - 7:25 am
DEN
-
SYD
38h 42m1 stop
Multiple Airlines Logo
5:45 pm - 6:00 pm
SYD
-
DEN
18h 15m1 stop
$1,058Multiple Airlines
Sun, Feb 22 - Sat, Feb 28
Multiple Airlines Logo
9:44 pm - 7:25 am
DEN
-
SYD
39h 41m1 stop
Multiple Airlines Logo
5:45 pm - 6:08 pm
SYD
-
DEN
18h 23m1 stop
$1,060Multiple Airlines
Sat, Jan 24 - Sat, Jan 31
Multiple Airlines Logo
7:00 am - 7:25 am
DEN
-
SYD
30h 25m2 stops
Multiple Airlines Logo
11:20 am - 9:00 pm
SYD
-
DEN
27h 40m2 stops
$1,061Multiple Airlines
Sat, Feb 7 - Sat, Feb 14
Multiple Airlines Logo
7:00 am - 7:25 am
DEN
-
SYD
30h 25m2 stops
Multiple Airlines Logo
5:45 pm - 9:00 pm
SYD
-
DEN
21h 15m2 stops
$1,062Multiple Airlines
Sat, Feb 7 - Sat, Feb 14
Multiple Airlines Logo
6:05 am - 7:25 am
DEN
-
SYD
31h 20m1 stop
Multiple Airlines Logo
11:20 am - 6:05 pm
SYD
-
DEN
24h 45m1 stop
$1,065Multiple Airlines
Fri, Feb 6 - Fri, Feb 13
Qantas Airways Logo
7:23 pm - 9:00 am
DEN
-
SYD
19h 37m1 stop
Qantas Airways Logo
11:20 am - 12:17 pm
SYD
-
DEN
18h 57m1 stop
$1,070Qantas Airways
Sun, Feb 1 - Sun, Feb 15
Multiple Airlines Logo
7:00 am - 9:00 am
DEN
-
SYD
32h 00m2 stops
Multiple Airlines Logo
5:45 pm - 3:56 am
SYD
-
DEN
28h 11m2 stops
$1,074Multiple Airlines
Mon, Feb 9 - Thu, Feb 19

Qantas Airways flights from Denver to Sydney

Our best Qantas Airways deals on Denver to Sydney flight tickets
Qantas Airways
Feb 1
DEN7:23 pmDenver Intl
19h 37m
1 stop
SYD9:00 amSydney Kingsford Smith
Feb 15
SYD11:20 amSydney Kingsford Smith
18h 57m
1 stop
DEN12:17 pmDenver Intl
$1,070
Find similar
Qantas Airways
Feb 7
DEN7:23 pmDenver Intl
19h 37m
1 stop
SYD9:00 amSydney Kingsford Smith
Feb 14
SYD5:45 pmSydney Kingsford Smith
19h 48m
1 stop
DEN7:33 pmDenver Intl
$1,098
Find similar
Qantas Airways
Feb 7
DEN12:53 pmDenver Intl
24h 32m
1 stop
SYD7:25 amSydney Kingsford Smith
Feb 14
SYD11:20 amSydney Kingsford Smith
18h 57m
1 stop
DEN12:17 pmDenver Intl
$1,108
Find similar

Air New Zealand flights from Denver to Sydney

Our best Air New Zealand deals on Denver to Sydney flight tickets
Air New Zealand
Mar 2
DEN4:03 pmDenver Intl
24h 27m
2 stops
SYD10:30 amSydney Kingsford Smith
Mar 9
SYD11:45 amSydney Kingsford Smith
24h 55m
2 stops
DEN7:40 pmDenver Intl
$1,169
Find similar
Air New Zealand
Mar 2
DEN1:45 pmDenver Intl
26h 45m
2 stops
SYD10:30 amSydney Kingsford Smith
Mar 9
SYD11:45 amSydney Kingsford Smith
24h 55m
2 stops
DEN7:40 pmDenver Intl
$1,171
Find similar
Air New Zealand
Dec 27
DEN5:45 amDenver Intl
33h 30m
1 stop
SYD9:15 amSydney Kingsford Smith
Dec 29
SYD11:45 amSydney Kingsford Smith
38h 33m
2 stops
DEN8:18 amDenver Intl
$2,328
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 25, 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

Fri 1/23

6:05 am-12:35 pm

2 stops36h 30m

Sydney Kingsford Smith

Fri 1/30

2:00 pm-11:31 pm

2 stops27h 31m

$823

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 2/7

12:00 pm-9:00 am

1 stop27h 00m

Sydney Kingsford Smith

Sat 2/14

11:20 am-9:00 pm

2 stops27h 40m

$1,023

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 2/9

6:05 am-9:00 am

1 stop32h 55m

Sydney Kingsford Smith

Thu 2/19

5:45 pm-3:56 am

2 stops28h 11m

$1,037

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/22

10:43 pm-7:25 am

1 stop38h 42m

Sydney Kingsford Smith

Sat 2/28

5:45 pm-6:00 pm

1 stop18h 15m

$1,058

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 1/24

9:44 pm-7:25 am

1 stop39h 41m

Sydney Kingsford Smith

Sat 1/31

5:45 pm-6:08 pm

1 stop18h 23m

$1,060

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 2/7

7:00 am-7:25 am

2 stops30h 25m

Sydney Kingsford Smith

Sat 2/14

11:20 am-9:00 pm

2 stops27h 40m

$1,061

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 2/7

7:00 am-7:25 am

2 stops30h 25m

Sydney Kingsford Smith

Sat 2/14

5:45 pm-9:00 pm

2 stops21h 15m

$1,062

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 2/6

6:05 am-7:25 am

1 stop31h 20m

Sydney Kingsford Smith

Fri 2/13

11:20 am-6:05 pm

1 stop24h 45m

$1,065

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/1

7:23 pm-9:00 am

1 stop19h 37m

Sydney Kingsford Smith

Sun 2/15

11:20 am-12:17 pm

1 stop18h 57m

$1,070

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 2/9

7:00 am-9:00 am

2 stops32h 00m

Sydney Kingsford Smith

Thu 2/19

5:45 pm-3:56 am

2 stops28h 11m

$1,074

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

19h 11m

Direct flights

None
The fastest flight from Denver to Sydney takes 19h 11m
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 19h 11m.

  • 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
8.0
211 reviews
Search Fiji Airways flights
DeltaPriceFrom $698Free CancellationRating
7.9
8,012 reviews
Search Delta flights
Alaska AirlinesPriceFrom $745Free CancellationRating
8.0
11,531 reviews
Search Alaska Airlines flights
Qantas AirwaysPriceFrom $803Free CancellationRating
7.5
953 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $826Free CancellationRating
7.2
11,057 reviews
Search American Airlines flights
Air New ZealandPriceFrom $834Free CancellationRating
8.0
557 reviews
Search Air New Zealand flights
United AirlinesPriceFrom $853Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
Air CanadaPriceFrom $980Free CancellationRating
7.1
10,555 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.

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