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Cheap flights from Denver to Sydney from $440

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 8/20. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denver to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:30 am - 12:50 pm
DEN
-
SYD
37h 20m
2 stops
Multiple Airlines Logo
2:00 pm - 12:25 am
SYD
-
DEN
28h 25m
2 stops
$985Multiple Airlines
ven., oct. 16 - dim., nov. 8
Multiple Airlines Logo
1:34 pm - 12:50 pm
DEN
-
SYD
30h 16m
3 stops
Multiple Airlines Logo
2:00 pm - 12:25 am
SYD
-
DEN
28h 25m
2 stops
$1,015Multiple Airlines
ven., oct. 16 - dim., nov. 8
Multiple Airlines Logo
12:17 pm - 12:35 pm
DEN
-
SYD
31h 18m
2 stops
Multiple Airlines Logo
11:15 am - 6:12 pm
SYD
-
DEN
24h 57m
1 stop
$1,056Multiple Airlines
sam., oct. 24 - mar., nov. 10
Multiple Airlines Logo
7:25 am - 11:50 am
DEN
-
SYD
36h 25m
2 stops
Multiple Airlines Logo
5:50 pm - 10:03 am
SYD
-
DEN
32h 13m
1 stop
$1,072Multiple Airlines
mar., août 11 - mar., août 18
Multiple Airlines Logo
7:00 am - 11:50 am
DEN
-
SYD
36h 50m
2 stops
Multiple Airlines Logo
5:50 pm - 12:44 am
SYD
-
DEN
22h 54m
1 stop
$1,088Multiple Airlines
jeu., août 13 - sam., sept. 5
Multiple Airlines Logo
6:30 am - 12:50 pm
DEN
-
SYD
37h 20m
2 stops
Multiple Airlines Logo
6:50 pm - 9:40 am
SYD
-
DEN
31h 50m
1 stop
$1,092Multiple Airlines
mar., oct. 13 - mar., oct. 20
Multiple Airlines Logo
7:00 am - 11:50 am
DEN
-
SYD
36h 50m
2 stops
Multiple Airlines Logo
5:50 pm - 12:46 am
SYD
-
DEN
22h 56m
1 stop
$1,093Multiple Airlines
dim., août 9 - dim., août 23
Multiple Airlines Logo
3:20 pm - 11:50 am
DEN
-
SYD
28h 30m
2 stops
Multiple Airlines Logo
5:50 pm - 12:42 am
SYD
-
DEN
22h 52m
1 stop
$1,096Multiple Airlines
jeu., août 13 - sam., août 15
Multiple Airlines Logo
10:39 pm - 11:50 am
DEN
-
SYD
45h 11m
2 stops
Multiple Airlines Logo
11:15 am - 6:12 pm
SYD
-
DEN
24h 57m
1 stop
$1,097Multiple Airlines
lun., août 17 - mar., nov. 10
Multiple Airlines Logo
9:40 am - 12:35 pm
DEN
-
SYD
33h 55m
2 stops
Multiple Airlines Logo
11:15 am - 9:55 am
SYD
-
DEN
40h 40m
1 stop
$1,098Multiple Airlines
jeu., oct. 29 - ven., nov. 13

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Air Canada flights from Denver to Sydney

Our best Air Canada deals on Denver to Sydney flight tickets
Air Canada
Jul 1
DEN7:45 pmDenver Intl
19h 35m
1 stop
SYD7:20 amSydney Kingsford Smith
Jul 7
SYD9:20 amSydney Kingsford Smith
23h 53m
1 stop
DEN5:13 pmDenver Intl
$1,508
Air Canada
Jul 5
DEN7:45 pmDenver Intl
19h 35m
1 stop
SYD7:20 amSydney Kingsford Smith
Jul 13
SYD9:20 amSydney Kingsford Smith
27h 02m
2 stops
DEN8:22 pmDenver Intl
$1,516
Air Canada
Jul 1
DEN7:45 pmDenver Intl
19h 35m
1 stop
SYD7:20 amSydney Kingsford Smith
Jul 7
SYD9:20 amSydney Kingsford Smith
39h 10m
2 stops
DEN8:30 amDenver Intl
$1,518

Air New Zealand flights from Denver to Sydney

Our best Air New Zealand deals on Denver to Sydney flight tickets
Air New Zealand
Aug 25
DEN1:30 pmDenver Intl
27h 15m
2 stops
SYD8:45 amSydney Kingsford Smith
Sep 15
SYD9:55 amSydney Kingsford Smith
28h 13m
2 stops
DEN10:08 pmDenver Intl
$1,224
Air New Zealand
Aug 25
DEN1:30 pmDenver Intl
27h 15m
2 stops
SYD8:45 amSydney Kingsford Smith
Sep 15
SYD9:55 amSydney Kingsford Smith
28h 13m
2 stops
DEN10:08 pmDenver Intl
$1,226
Air New Zealand
Sep 9
DEN5:49 pmDenver Intl
22h 56m
2 stops
SYD8:45 amSydney Kingsford Smith
Sep 21
SYD11:55 amSydney Kingsford Smith
26h 13m
2 stops
DEN10:08 pmDenver Intl
$1,227

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 juin 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

Cheapest round-trip

DenverSydney

DEN - SYD

DENSYD

Denver Intl

ven. 10/16

6:30 am-12:50 pm

2 stops37h 20m

Sydney Kingsford Smith

dim. 11/8

2:00 pm-12:25 am

2 stops28h 25m

$985

DenverSydney

DEN - SYD

DENSYD

Denver Intl

ven. 10/16

1:34 pm-12:50 pm

3 stops30h 16m

Sydney Kingsford Smith

dim. 11/8

2:00 pm-12:25 am

2 stops28h 25m

$1,015

DenverSydney

DEN - SYD

DENSYD

Denver Intl

sam. 10/24

12:17 pm-12:35 pm

2 stops31h 18m

Sydney Kingsford Smith

mar. 11/10

11:15 am-6:12 pm

1 stop24h 57m

$1,056

DenverSydney

DEN - SYD

DENSYD

Denver Intl

mar. 8/11

7:25 am-11:50 am

2 stops36h 25m

Sydney Kingsford Smith

mar. 8/18

5:50 pm-10:03 am

1 stop32h 13m

$1,072

DenverSydney

DEN - SYD

DENSYD

Denver Intl

jeu. 8/13

7:00 am-11:50 am

2 stops36h 50m

Sydney Kingsford Smith

sam. 9/5

5:50 pm-12:44 am

1 stop22h 54m

$1,088

DenverSydney

DEN - SYD

DENSYD

Denver Intl

mar. 10/13

6:30 am-12:50 pm

2 stops37h 20m

Sydney Kingsford Smith

mar. 10/20

6:50 pm-9:40 am

1 stop31h 50m

$1,092

DenverSydney

DEN - SYD

DENSYD

Denver Intl

dim. 8/9

7:00 am-11:50 am

2 stops36h 50m

Sydney Kingsford Smith

dim. 8/23

5:50 pm-12:46 am

1 stop22h 56m

$1,093
Quickest round-trip

DenverSydney

DEN - SYD

DENSYD

Denver Intl

jeu. 8/13

3:20 pm-11:50 am

2 stops28h 30m

Sydney Kingsford Smith

sam. 8/15

5:50 pm-12:42 am

1 stop22h 52m

$1,096

DenverSydney

DEN - SYD

DENSYD

Denver Intl

lun. 8/17

10:39 pm-11:50 am

2 stops45h 11m

Sydney Kingsford Smith

mar. 11/10

11:15 am-6:12 pm

1 stop24h 57m

$1,097

DenverSydney

DEN - SYD

DENSYD

Denver Intl

jeu. 10/29

9:40 am-12:35 pm

2 stops33h 55m

Sydney Kingsford Smith

ven. 11/13

11:15 am-9:55 am

1 stop40h 40m

$1,098

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, September 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 $1,071. If you are unable to visit Sydney during the month of September, then departing from Denver during the month August is also very affordable. Most momondo users find prices during this month for around $1,131.

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 $1,318 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 $1,158 on momondo.

Can stopping save me money on Denver to Sydney flights?

You could potentially save up to 4% 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 June 2026, prices for Denver to Sydney flights are approximately 15% 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 20m

Direct flights

None
The fastest flight from Denver to Sydney takes 19h 20m
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 20m.

  • 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
7.8
8,452 reviews
Search Delta flights
Fiji AirwaysPriceFrom $684Free CancellationRating
8.1
245 reviews
Search Fiji Airways flights
Alaska AirlinesPriceFrom $745Free CancellationRating
7.9
12,581 reviews
Search Alaska Airlines flights
Qantas AirwaysPriceFrom $800Free CancellationRating
7.5
1,050 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $844Free CancellationRating
7.1
11,778 reviews
Search American Airlines flights
United AirlinesPriceFrom $853Free CancellationRating
7.4
9,895 reviews
Search United Airlines flights
Air CanadaPriceFrom $1,009Free CancellationRating
7.1
11,267 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,144Free CancellationRating
8.0
646 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
Penrith
Wollongong
Katoomba
Randwick
Leura
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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