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Cheap flights from Denver to Sydney from $446

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 8/12. 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.
American Airlines Logo
6:08 pm - 7:05 am
DEN
-
SYD
20h 57m
1 stop
American Airlines Logo
9:10 am - 11:01 am
SYD
-
DEN
17h 51m
1 stop
$1,007American Airlines
Tue, Jun 2 - Tue, Jun 16
Delta Logo
6:30 pm - 6:50 am
DEN
-
SYD
20h 20m
1 stop
Delta Logo
9:15 am - 12:19 pm
SYD
-
DEN
19h 04m
1 stop
$1,010Delta
Wed, May 20 - Mon, May 25
American Airlines Logo
6:08 pm - 7:05 am
DEN
-
SYD
20h 57m
1 stop
American Airlines Logo
9:10 am - 5:20 pm
SYD
-
DEN
24h 10m
2 stops
$1,011American Airlines
Tue, Jun 2 - Tue, Jun 16
Multiple Airlines Logo
7:00 am - 10:10 pm
DEN
-
SYD
47h 10m
2 stops
Multiple Airlines Logo
1:15 pm - 12:40 am
SYD
-
DEN
27h 25m
2 stops
$1,012Multiple Airlines
Sun, Aug 23 - Sat, Sep 5
Delta Logo
7:55 am - 6:50 am
DEN
-
SYD
30h 55m
2 stops
Delta Logo
9:15 am - 5:35 pm
SYD
-
DEN
24h 20m
1 stop
$1,015Delta
Wed, May 20 - Mon, May 25
American Airlines Logo
6:26 pm - 9:20 am
DEN
-
SYD
22h 54m
2 stops
American Airlines Logo
9:10 am - 5:56 pm
SYD
-
DEN
24h 46m
1 stop
$1,028American Airlines
Mon, Aug 24 - Sun, Sep 6
American Airlines Logo
6:19 pm - 9:20 am
DEN
-
SYD
23h 01m
2 stops
American Airlines Logo
9:10 am - 11:01 am
SYD
-
DEN
17h 51m
1 stop
$1,029American Airlines
Tue, May 19 - Wed, Jun 3
American Airlines Logo
6:19 pm - 9:20 am
DEN
-
SYD
23h 01m
2 stops
American Airlines Logo
9:10 am - 6:16 pm
SYD
-
DEN
25h 06m
2 stops
$1,033American Airlines
Tue, May 19 - Wed, Jun 3
American Airlines Logo
6:26 pm - 9:20 am
DEN
-
SYD
22h 54m
2 stops
American Airlines Logo
5:30 pm - 11:59 pm
SYD
-
DEN
22h 29m
2 stops
$1,051American Airlines
Wed, Aug 26 - Tue, Sep 1
American Airlines Logo
11:39 am - 7:05 am
DEN
-
SYD
27h 26m
1 stop
American Airlines Logo
9:10 am - 11:09 am
SYD
-
DEN
17h 59m
1 stop
$1,056American Airlines
Thu, Aug 27 - Sun, Sep 6

Air Canada flights from Denver to Sydney

Our best Air Canada deals on Denver to Sydney flight tickets
Air Canada
May 19
DEN7:50 pmDenver Intl
19h 30m
1 stop
SYD7:20 amSydney Kingsford Smith
Jun 3
SYD9:20 amSydney Kingsford Smith
23h 40m
1 stop
DEN5:00 pmDenver Intl
$1,511
Air Canada
May 19
DEN7:50 pmDenver Intl
19h 30m
1 stop
SYD7:20 amSydney Kingsford Smith
Jun 3
SYD9:20 amSydney Kingsford Smith
23h 40m
1 stop
DEN5:00 pmDenver Intl
$1,512
Air Canada
May 19
DEN11:19 amDenver Intl
28h 01m
2 stops
SYD7:20 amSydney Kingsford Smith
Jun 3
SYD9:20 amSydney Kingsford Smith
23h 40m
1 stop
DEN5:00 pmDenver Intl
$1,521

American Airlines flights from Denver to Sydney

Our best American Airlines deals on Denver to Sydney flight tickets
American Airlines
Jun 2
DEN6:08 pmDenver Intl
20h 57m
1 stop
SYD7:05 amSydney Kingsford Smith
Jun 16
SYD9:10 amSydney Kingsford Smith
17h 51m
1 stop
DEN11:01 amDenver Intl
$1,007
American Airlines
Jun 2
DEN6:08 pmDenver Intl
20h 57m
1 stop
SYD7:05 amSydney Kingsford Smith
Jun 16
SYD9:10 amSydney Kingsford Smith
24h 10m
2 stops
DEN5:20 pmDenver Intl
$1,011
American Airlines
Aug 24
DEN6:26 pmDenver Intl
22h 54m
2 stops
SYD9:20 amSydney Kingsford Smith
Sep 6
SYD9:10 amSydney Kingsford Smith
24h 46m
1 stop
DEN5:56 pmDenver Intl
$1,028

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 May 9, 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

Cheapest round-trip
Quickest round-trip

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 6/2

6:08 pm-7:05 am

1 stop20h 57m

Sydney Kingsford Smith

Tue 6/16

9:10 am-11:01 am

1 stop17h 51m

$1,007

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 5/20

6:30 pm-6:50 am

1 stop20h 20m

Sydney Kingsford Smith

Mon 5/25

9:15 am-12:19 pm

1 stop19h 04m

$1,010

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 6/2

6:08 pm-7:05 am

1 stop20h 57m

Sydney Kingsford Smith

Tue 6/16

9:10 am-5:20 pm

2 stops24h 10m

$1,011

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 8/23

7:00 am-10:10 pm

2 stops47h 10m

Sydney Kingsford Smith

Sat 9/5

1:15 pm-12:40 am

2 stops27h 25m

$1,012

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 5/20

7:55 am-6:50 am

2 stops30h 55m

Sydney Kingsford Smith

Mon 5/25

9:15 am-5:35 pm

1 stop24h 20m

$1,015

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 8/24

6:26 pm-9:20 am

2 stops22h 54m

Sydney Kingsford Smith

Sun 9/6

9:10 am-5:56 pm

1 stop24h 46m

$1,028

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 5/19

6:19 pm-9:20 am

2 stops23h 01m

Sydney Kingsford Smith

Wed 6/3

9:10 am-11:01 am

1 stop17h 51m

$1,029

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 5/19

6:19 pm-9:20 am

2 stops23h 01m

Sydney Kingsford Smith

Wed 6/3

9:10 am-6:16 pm

2 stops25h 06m

$1,033

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 8/26

6:26 pm-9:20 am

2 stops22h 54m

Sydney Kingsford Smith

Tue 9/1

5:30 pm-11:59 pm

2 stops22h 29m

$1,051

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 8/27

11:39 am-7:05 am

1 stop27h 26m

Sydney Kingsford Smith

Sun 9/6

9:10 am-11:09 am

1 stop17h 59m

$1,056

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 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 $1,183. If you are unable to visit Sydney during the month of April, then departing from Denver during the month August is also very affordable. Most momondo users find prices during this month for around $1,191.

How far in advance should I book a flight from Denver 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 $1,332 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 $1,130 on momondo.

Can stopping save me money on Denver to Sydney flights?

You could potentially save up to 45% 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 May 2026, prices for Denver to Sydney flights are approximately 4% 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 24m

Direct flights

None
The fastest flight from Denver to Sydney takes 19h 24m
There are no direct flights from Denver to Sydney. There are no popular flight routes from Denver to Sydney.
Search flight deals

Frequently asked questions about flying from Denver to Sydney

  • 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 24m.

  • 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 $253Free CancellationRating
7.9
8,457 reviews
Search Delta flights
Fiji AirwaysPriceFrom $684Free CancellationRating
8.1
240 reviews
Search Fiji Airways flights
Alaska AirlinesPriceFrom $745Free CancellationRating
7.9
12,348 reviews
Search Alaska Airlines flights
Qantas AirwaysPriceFrom $800Free CancellationRating
7.5
1,033 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $844Free CancellationRating
7.1
11,668 reviews
Search American Airlines flights
United AirlinesPriceFrom $853Free CancellationRating
7.4
9,695 reviews
Search United Airlines flights
Air CanadaPriceFrom $1,009Free CancellationRating
7.1
11,012 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,144Free CancellationRating
8.0
640 reviews
Search Air New Zealand 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
Penrith
Leura
Randwick
Lithgow
Manly
Coogee
Cronulla
Terrigal
Charlestown
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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