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Cheap flights from Denver to Sydney from $427

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 5/20. 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
9:00 am - 12:35 pm
DEN
-
SYD
34h 35m
2 stops
Multiple Airlines Logo
1:15 pm - 12:31 am
SYD
-
DEN
27h 16m
2 stops
$886Multiple Airlines
Sun, Mar 22 - Tue, Apr 7
Multiple Airlines Logo
9:30 pm - 11:50 am
DEN
-
SYD
46h 20m
2 stops
Multiple Airlines Logo
5:50 pm - 6:16 pm
SYD
-
DEN
40h 26m
1 stop
$1,080Multiple Airlines
Wed, Apr 15 - Wed, Apr 22
Multiple Airlines Logo
10:29 pm - 11:50 am
DEN
-
SYD
45h 21m
2 stops
Multiple Airlines Logo
5:50 pm - 10:47 am
SYD
-
DEN
32h 57m
1 stop
$1,082Multiple Airlines
Mon, Apr 27 - Tue, May 12
Multiple Airlines Logo
10:30 pm - 11:50 am
DEN
-
SYD
45h 20m
2 stops
Multiple Airlines Logo
5:50 pm - 6:16 pm
SYD
-
DEN
40h 26m
1 stop
$1,091Multiple Airlines
Tue, Apr 7 - Sun, Apr 19
Multiple Airlines Logo
10:29 pm - 11:50 am
DEN
-
SYD
45h 21m
2 stops
Multiple Airlines Logo
5:50 pm - 9:45 am
SYD
-
DEN
31h 55m
1 stop
$1,094Multiple Airlines
Fri, May 1 - Fri, May 8
Multiple Airlines Logo
10:30 pm - 11:50 am
DEN
-
SYD
45h 20m
2 stops
Multiple Airlines Logo
5:50 pm - 9:45 am
SYD
-
DEN
31h 55m
1 stop
$1,097Multiple Airlines
Fri, Apr 10 - Fri, Apr 17
Multiple Airlines Logo
10:29 pm - 11:50 am
DEN
-
SYD
45h 21m
2 stops
Multiple Airlines Logo
5:50 pm - 10:47 am
SYD
-
DEN
32h 57m
1 stop
$1,102Multiple Airlines
Mon, Apr 20 - Mon, May 4
Multiple Airlines Logo
10:29 pm - 7:30 am
DEN
-
SYD
41h 01m
1 stop
Multiple Airlines Logo
5:50 pm - 10:47 am
SYD
-
DEN
32h 57m
1 stop
$1,104Multiple Airlines
Mon, Apr 27 - Tue, May 12
Multiple Airlines Logo
10:30 pm - 7:30 am
DEN
-
SYD
41h 00m
1 stop
Multiple Airlines Logo
8:45 pm - 10:47 am
SYD
-
DEN
30h 02m
2 stops
$1,106Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
Air Canada Logo
7:05 pm - 8:35 am
DEN
-
SYD
20h 30m
1 stop
Air Canada Logo
9:20 am - 12:35 pm
SYD
-
DEN
19h 15m
1 stop
$1,109Air Canada
Wed, Mar 25 - Tue, Apr 7

Air New Zealand flights from Denver to Sydney

Our best Air New Zealand deals on Denver to Sydney flight tickets
Air New Zealand
Apr 12
DEN5:42 pmDenver Intl
23h 03m
2 stops
SYD8:45 amSydney Kingsford Smith
Apr 26
SYD9:55 amSydney Kingsford Smith
29h 04m
2 stops
DEN10:59 pmDenver Intl
$1,119
Air New Zealand
Aug 25
DEN5:50 pmDenver Intl
22h 55m
2 stops
SYD8:45 amSydney Kingsford Smith
Sep 15
SYD11:55 amSydney Kingsford Smith
21h 55m
2 stops
DEN5:50 pmDenver Intl
$1,120
Air New Zealand
Apr 14
DEN5:42 pmDenver Intl
23h 03m
2 stops
SYD8:45 amSydney Kingsford Smith
Apr 21
SYD11:55 amSydney Kingsford Smith
22h 30m
2 stops
DEN6:25 pmDenver Intl
$1,127

Air Canada flights from Denver to Sydney

Our best Air Canada deals on Denver to Sydney flight tickets
Air Canada
Mar 25
DEN7:05 pmDenver Intl
20h 30m
1 stop
SYD8:35 amSydney Kingsford Smith
Apr 7
SYD9:20 amSydney Kingsford Smith
19h 15m
1 stop
DEN12:35 pmDenver Intl
$1,109
Air Canada
May 16
DEN6:10 pmDenver Intl
45h 10m
2 stops
SYD7:20 amSydney Kingsford Smith
May 26
SYD9:20 amSydney Kingsford Smith
29h 50m
1 stop
DEN11:10 pmDenver Intl
$1,117
Air Canada
May 12
DEN7:50 pmDenver Intl
19h 30m
1 stop
SYD7:20 amSydney Kingsford Smith
May 24
SYD9:20 amSydney Kingsford Smith
23h 40m
1 stop
DEN5:00 pmDenver Intl
$1,118

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 February 27, 2026.
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 3/22

9:00 am-12:35 pm

2 stops34h 35m

Sydney Kingsford Smith

Tue 4/7

1:15 pm-12:31 am

2 stops27h 16m

$886

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 4/15

9:30 pm-11:50 am

2 stops46h 20m

Sydney Kingsford Smith

Wed 4/22

5:50 pm-6:16 pm

1 stop40h 26m

$1,080

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 4/27

10:29 pm-11:50 am

2 stops45h 21m

Sydney Kingsford Smith

Tue 5/12

5:50 pm-10:47 am

1 stop32h 57m

$1,082

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 4/7

10:30 pm-11:50 am

2 stops45h 20m

Sydney Kingsford Smith

Sun 4/19

5:50 pm-6:16 pm

1 stop40h 26m

$1,091

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 5/1

10:29 pm-11:50 am

2 stops45h 21m

Sydney Kingsford Smith

Fri 5/8

5:50 pm-9:45 am

1 stop31h 55m

$1,094

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 4/10

10:30 pm-11:50 am

2 stops45h 20m

Sydney Kingsford Smith

Fri 4/17

5:50 pm-9:45 am

1 stop31h 55m

$1,097

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 4/20

10:29 pm-11:50 am

2 stops45h 21m

Sydney Kingsford Smith

Mon 5/4

5:50 pm-10:47 am

1 stop32h 57m

$1,102

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 4/27

10:29 pm-7:30 am

1 stop41h 01m

Sydney Kingsford Smith

Tue 5/12

5:50 pm-10:47 am

1 stop32h 57m

$1,104

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 4/7

10:30 pm-7:30 am

1 stop41h 00m

Sydney Kingsford Smith

Tue 4/14

8:45 pm-10:47 am

2 stops30h 02m

$1,106

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 3/25

7:05 pm-8:35 am

1 stop20h 30m

Sydney Kingsford Smith

Tue 4/7

9:20 am-12:35 pm

1 stop19h 15m

$1,109

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Denver and Sydney?

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 $902. If you are unable to visit Sydney during the month of April, then departing from Denver during the month September is also very affordable. Most momondo users find prices during this month for around $1,032.

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 $1,264 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 $1,095 on momondo.

How have Denver to Sydney flight prices changed over time?

As of February 2026, prices for Denver to Sydney flights are approximately 72% more expensive 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 30m

Direct flights

None
The fastest flight from Denver to Sydney takes 19h 30m
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 30m.

  • 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
DeltaPriceFrom $255Free CancellationRating
7.9
8,242 reviews
Search Delta flights
Fiji AirwaysPriceFrom $684Free CancellationRating
8.0
228 reviews
Search Fiji Airways flights
Alaska AirlinesPriceFrom $745Free CancellationRating
8.0
11,965 reviews
Search Alaska Airlines flights
Qantas AirwaysPriceFrom $799Free CancellationRating
7.5
999 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $833Free CancellationRating
7.2
11,357 reviews
Search American Airlines flights
Air New ZealandPriceFrom $834Free CancellationRating
8.0
605 reviews
Search Air New Zealand flights
United AirlinesPriceFrom $853Free CancellationRating
7.4
9,351 reviews
Search United Airlines flights
Air CanadaPriceFrom $980Free CancellationRating
7.1
10,750 reviews
Search Air Canada flights

Traveling to a place near Sydney?

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