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Cheap flights from Denver to Sydney from $512

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 9/10. 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
8:45 am - 11:50 am
DEN
-
SYD
35h 05m
2 stops
Multiple Airlines Logo
1:15 pm - 11:21 pm
SYD
-
DEN
26h 06m
2 stops
$945Multiple Airlines
Mon, Aug 10 - Tue, Aug 25
Multiple Airlines Logo
7:25 am - 11:50 am
DEN
-
SYD
36h 25m
2 stops
Multiple Airlines Logo
1:15 pm - 12:44 am
SYD
-
DEN
27h 29m
2 stops
$950Multiple Airlines
Wed, Aug 19 - Sat, Sep 5
Multiple Airlines Logo
10:39 pm - 11:50 am
DEN
-
SYD
45h 11m
2 stops
Multiple Airlines Logo
1:15 pm - 12:44 am
SYD
-
DEN
27h 29m
2 stops
$975Multiple Airlines
Tue, Aug 25 - Thu, Sep 3
Multiple Airlines Logo
7:00 am - 11:50 am
DEN
-
SYD
36h 50m
2 stops
Multiple Airlines Logo
1:15 pm - 12:44 am
SYD
-
DEN
27h 29m
2 stops
$1,007Multiple Airlines
Sun, Aug 23 - Sat, Aug 29
Multiple Airlines Logo
7:25 am - 11:50 am
DEN
-
SYD
36h 25m
2 stops
Multiple Airlines Logo
1:15 pm - 7:33 am
SYD
-
DEN
58h 18m
3 stops
$1,013Multiple Airlines
Tue, Aug 11 - Tue, Aug 18
Multiple Airlines Logo
9:15 am - 11:50 am
DEN
-
SYD
34h 35m
2 stops
Multiple Airlines Logo
1:15 pm - 12:25 am
SYD
-
DEN
27h 10m
2 stops
$1,014Multiple Airlines
Thu, Sep 10 - Fri, Sep 18
Multiple Airlines Logo
7:25 am - 11:50 am
DEN
-
SYD
36h 25m
2 stops
Multiple Airlines Logo
1:15 pm - 6:28 am
SYD
-
DEN
33h 13m
3 stops
$1,020Multiple Airlines
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
10:09 am - 11:50 am
DEN
-
SYD
33h 41m
3 stops
Multiple Airlines Logo
1:15 pm - 12:44 am
SYD
-
DEN
27h 29m
2 stops
$1,028Multiple Airlines
Wed, Aug 19 - Sat, Sep 5
Multiple Airlines Logo
9:15 am - 11:50 am
DEN
-
SYD
34h 35m
2 stops
Multiple Airlines Logo
1:15 pm - 2:00 pm
SYD
-
DEN
40h 45m
3 stops
$1,057Multiple Airlines
Thu, Sep 10 - Fri, Sep 18
Multiple Airlines Logo
10:39 pm - 11:50 am
DEN
-
SYD
45h 11m
2 stops
Multiple Airlines Logo
1:15 pm - 3:48 am
SYD
-
DEN
30h 33m
3 stops
$1,058Multiple Airlines
Tue, Aug 25 - Thu, Sep 3

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Qantas Airways flights from Denver to Sydney

Our best Qantas Airways deals on Denver to Sydney flight tickets
Qantas Airways
Jul 19
DEN6:12 pmDenver Intl
20h 53m
1 stop
SYD7:05 amSydney Kingsford Smith
Aug 11
SYD9:10 amSydney Kingsford Smith
17h 59m
1 stop
DEN11:09 amDenver Intl
$1,989
Qantas Airways
Jul 19
DEN6:12 pmDenver Intl
20h 53m
1 stop
SYD7:05 amSydney Kingsford Smith
Aug 11
SYD5:50 pmSydney Kingsford Smith
22h 07m
1 stop
DEN11:57 pmDenver Intl
$1,991
Qantas Airways
Jul 19
DEN6:12 pmDenver Intl
20h 53m
1 stop
SYD7:05 amSydney Kingsford Smith
Aug 11
SYD9:10 amSydney Kingsford Smith
24h 46m
1 stop
DEN5:56 pmDenver Intl
$2,019

Air New Zealand flights from Denver to Sydney

Our best Air New Zealand deals on Denver to Sydney flight tickets
Air New Zealand
Jul 26
DEN6:00 amDenver Intl
32h 55m
1 stop
SYD6:55 amSydney Kingsford Smith
Aug 31
SYD9:55 amSydney Kingsford Smith
27h 18m
2 stops
DEN9:13 pmDenver Intl
$1,612
Air New Zealand
Jul 25
DEN9:20 pmDenver Intl
41h 40m
1 stop
SYD7:00 amSydney Kingsford Smith
Aug 31
SYD7:50 amSydney Kingsford Smith
29h 23m
2 stops
DEN9:13 pmDenver Intl
$1,765
Air New Zealand
Jul 25
DEN12:00 pmDenver Intl
62h 10m
2 stops
SYD6:10 pmSydney Kingsford Smith
Aug 31
SYD10:20 amSydney Kingsford Smith
25h 47m
1 stop
DEN8:07 pmDenver Intl
$1,832

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 July 17, 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

Mon 8/10

8:45 am-11:50 am

2 stops35h 05m

Sydney Kingsford Smith

Tue 8/25

1:15 pm-11:21 pm

2 stops26h 06m

$945

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 8/19

7:25 am-11:50 am

2 stops36h 25m

Sydney Kingsford Smith

Sat 9/5

1:15 pm-12:44 am

2 stops27h 29m

$950

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 8/25

10:39 pm-11:50 am

2 stops45h 11m

Sydney Kingsford Smith

Thu 9/3

1:15 pm-12:44 am

2 stops27h 29m

$975

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 8/23

7:00 am-11:50 am

2 stops36h 50m

Sydney Kingsford Smith

Sat 8/29

1:15 pm-12:44 am

2 stops27h 29m

$1,007

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 8/11

7:25 am-11:50 am

2 stops36h 25m

Sydney Kingsford Smith

Tue 8/18

1:15 pm-7:33 am

3 stops58h 18m

$1,013

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 9/10

9:15 am-11:50 am

2 stops34h 35m

Sydney Kingsford Smith

Fri 9/18

1:15 pm-12:25 am

2 stops27h 10m

$1,014

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 8/12

7:25 am-11:50 am

2 stops36h 25m

Sydney Kingsford Smith

Wed 8/19

1:15 pm-6:28 am

3 stops33h 13m

$1,020
Quickest round-trip

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 8/19

10:09 am-11:50 am

3 stops33h 41m

Sydney Kingsford Smith

Sat 9/5

1:15 pm-12:44 am

2 stops27h 29m

$1,028

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 9/10

9:15 am-11:50 am

2 stops34h 35m

Sydney Kingsford Smith

Fri 9/18

1:15 pm-2:00 pm

3 stops40h 45m

$1,057

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 8/25

10:39 pm-11:50 am

2 stops45h 11m

Sydney Kingsford Smith

Thu 9/3

1:15 pm-3:48 am

3 stops30h 33m

$1,058

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 $1,109. If you are unable to visit Sydney during the month of September, then departing from Denver during the month April is also very affordable. Most momondo users find prices during this month for around $1,183.

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 $1,356 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 $1,217 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 July 2026, prices for Denver to Sydney flights are approximately 18% 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

23h 20m

Direct flights

None
The fastest flight from Denver to Sydney takes 23h 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 23h 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 $250Free CancellationRating
7.8
8,476 reviews
Search Delta flights
Fiji AirwaysPriceFrom $684Free CancellationRating
8.0
248 reviews
Search Fiji Airways flights
American AirlinesPriceFrom $844Free CancellationRating
7.1
11,829 reviews
Search American Airlines flights
Qantas AirwaysPriceFrom $847Free CancellationRating
7.5
1,062 reviews
Search Qantas Airways flights
United AirlinesPriceFrom $853Free CancellationRating
7.4
10,006 reviews
Search United Airlines flights
Air CanadaPriceFrom $1,029Free CancellationRating
7.1
11,352 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,144Free CancellationRating
8.0
654 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
Wollongong
Penrith
Katoomba
Cronulla
Leura
Randwick
Lithgow
Coogee
Manly
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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