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Cheap flights from Denver to Sydney from $605

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/4. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
26 apr. — 3 maj1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Denver to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Denver to Sydney
Explore the most affordable flight options available from Denver to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 marts 2026.

tir. 26/507:20
DEN
-
SYD
2 stops36h 30m
Multiple Airlines
tir. 2/613:15
SYD
-
DEN
2 stops22h 51m
Multiple Airlines
Deal found 25/3$1,247
tor. 7/507:00
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
tor. 14/506:00
SYD
-
DEN
2 stops34h 38m
Multiple Airlines
Deal found 23/3$1,264
man. 4/506:00
DEN
-
SYD
2 stops48h 10m
Multiple Airlines
fre. 8/506:00
SYD
-
DEN
2 stops34h 38m
Multiple Airlines
Deal found 24/3$1,276
ons. 22/413:40
DEN
-
SYD
2 stops30h 10m
Multiple Airlines
ons. 29/413:20
SYD
-
DEN
2 stops22h 29m
Multiple Airlines
Deal found 23/3$1,290
man. 11/507:00
DEN
-
SYD
2 stops37h 05m
Multiple Airlines
søn. 24/513:15
SYD
-
DEN
2 stops22h 51m
Multiple Airlines
Deal found 26/3$1,293
man. 13/409:20
DEN
-
SYD
2 stops44h 50m
Multiple Airlines
man. 25/513:15
SYD
-
DEN
2 stops27h 23m
Multiple Airlines
Deal found 23/3$1,341
lør. 23/507:00
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
fre. 5/613:15
SYD
-
DEN
2 stops27h 23m
Multiple Airlines
Deal found 25/3$1,362
søn. 26/419:05
DEN
-
SYD
1 stop20h 15m
Air Canada
søn. 10/509:20
SYD
-
DEN
2 stops24h 47m
Air Canada
Deal found 24/3$1,579
ons. 29/419:05
DEN
-
SYD
1 stop20h 15m
Air Canada
tir. 19/509:20
SYD
-
DEN
1 stop29h 50m
Air Canada
Deal found 25/3$1,586

Find flight deals from Denver to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 marts 2026.

Round-trip from

$1,234

One-way from

$605

Popular in

December

Cheapest in

April

Average price

$1,764
11/5-17/5
  • 11/5-17/5
  • 4 total stops
  • 71h 43m total
  • Denver to Sydney
Search Deals
23/4
  • 23/4
  • 2 total stops
  • 48h 10m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($328 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($65 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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, Cheapflights users made 647,157 searches. Data last updated 27 marts 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 return flight

DenverSydney

DEN - SYD

DENSYD

Denver Intl

tor. 7/5

12:41-07:05

1 stop26h 24m

Sydney Kingsford Smith

man. 11/5

09:10-17:48

1 stop24h 38m

$1,783

DenverSydney

DEN - SYD

DENSYD

Denver Intl

tor. 23/4

18:07-18:50

2 stops32h 43m

Sydney Kingsford Smith

tor. 30/4

20:45-12:06

2 stops31h 21m

$1,976

DenverSydney

DEN - SYD

DENSYD

Denver Intl

ons. 13/5

14:57-18:50

2 stops35h 53m

Sydney Kingsford Smith

fre. 22/5

20:45-13:39

2 stops32h 54m

$2,109

DenverSydney

DEN - SYD

DENSYD

Denver Intl

tir. 19/5

18:30-06:50

1 stop20h 20m

Sydney Kingsford Smith

ons. 3/6

09:15-17:35

1 stop24h 20m

$2,156

DenverSydney

DEN - SYD

DENSYD

Denver Intl

søn. 28/6

07:25-06:50

1 stop31h 25m

Sydney Kingsford Smith

ons. 22/7

09:15-20:01

2 stops26h 46m

$2,281

DenverSydney

DEN - SYD

DENSYD

Denver Intl

lør. 13/6

07:05-06:50

2 stops31h 45m

Sydney Kingsford Smith

fre. 26/6

09:15-23:45

2 stops30h 30m

$2,450
Fastest return journey

DenverSydney

DEN - SYD

DENSYD

Denver Intl

tir. 14/7

19:16-06:50

1 stop19h 34m

Sydney Kingsford Smith

søn. 26/7

09:15-11:28

1 stop18h 13m

$2,576

DenverSydney

DEN - SYD

DENSYD

Denver Intl

ons. 9/9

11:25-19:15

3 stops39h 50m

Sydney Kingsford Smith

man. 21/9

11:00-11:30

2 stops40h 30m

$3,203
Cheapest one-way

DenverSydney

DEN - SYD

DENSYD

Denver Intl

søn. 26/4

06:00-22:10

2 stops48h 10m

$620

DenverSydney

DEN - SYD

DENSYD

Denver Intl

søn. 24/5

14:00-11:50

2 stops29h 50m

$691

Flights are sorted by cheapest return flights first.

Deals found on 27/3

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Denver to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Denver with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Sydney

How far ahead should I book a flight from Denver to Sydney?

Use this chart to determine the optimal time to book a return flight from Denver to Sydney. Price data was last updated on 13 March 2026.

The best time to book flights from Denver to Sydney is 43 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Denver to Sydney?

Currently, September is the cheapest month in which you can book a flight from Denver to Sydney (average of $438). Flying from Denver to Sydney in January is currently the most expensive (average of $1,436). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Denver to Sydney?

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 27 marts 2026.
See what other customers who have flown with Qantas Airways from Denver to Sydney have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
1,011 reviews
Check prices

Boarding

7.7

Food

7.0

Crew

8.1

Comfort

7.4

Entertainment

7.2

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
Qantas Airways
7.5
Good
1,011 reviews
Qantas Airways
7.5
Good
1,011 reviews
Check prices

Boarding

7.7

Food

7.0

Crew

8.1

Comfort

7.4

Entertainment

7.2

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.

Related info for your journey

Find useful and relevant information for your journey from Denver to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Denver to Sydney?

    Qantas Airways and Delta can get you from Denver to Sydney in just under 20h 20m. Your travel time can differ by up to 6h 04m. There are 13435 km between Denver and Sydney. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What is the cheapest airline to fly from Denver to Sydney round-trip?

    According to our current data, Qantas Airways ($1,304), offers the cheapest pricing from Denver to Sydney. Qantas Airways is 33% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Denver to Sydney that include hotel bookings?

    Yes. In addition to deals on Denver to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Denver to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Sydney.

  • Can I find deals for business class flights from Denver to Sydney?

    Yes. Cheapflights offers flight deals from Denver to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to Sydney?

    Currently, September is the cheapest month in which you can book a flight from Denver to Sydney (average of $438). Flying from Denver to Sydney in January is currently the most expensive (average of $1,436). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Denver to Sydney

Discover the top airline that operate flights from Denver to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 27 marts 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,304Average$1,977FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Denver to Sydney?

Deals for Denver to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Denver to Sydney?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Denver to Sydney.

Can Cheapflights find flights from Denver to Sydney with no change fees?

Need flexible booking options for your flight to Sydney from Denver? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Denver to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Denver today and book when prices fit your budget.

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