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Cheap flights from Denver to Sydney from $672

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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
23 Feb — 2 Mar1
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 24 January 2026.

Mon 4/507:00
DEN
-
SYD
2 stops36h 55m
Multiple Airlines
Tue 19/513:15
SYD
-
DEN
2 stops22h 34m
Multiple Airlines
Deal found 22/1$1,339
Tue 17/211:30
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Tue 10/314:00
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 22/1$1,348
Fri 6/309:00
DEN
-
SYD
2 stops33h 35m
Multiple Airlines
Fri 13/314:00
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 22/1$1,364
Mon 16/206:00
DEN
-
SYD
1 stop31h 25m
Multiple Airlines
Wed 11/314:00
SYD
-
DEN
2 stops27h 37m
Multiple Airlines
Deal found 22/1$1,374
Mon 2/322:43
DEN
-
SYD
1 stop38h 42m
Multiple Airlines
Mon 16/314:00
SYD
-
DEN
2 stops36h 44m
Multiple Airlines
Deal found 22/1$1,384
Wed 4/321:31
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Wed 18/314:00
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 22/1$1,390
Mon 16/206:00
DEN
-
SYD
1 stop31h 25m
Multiple Airlines
Mon 9/314:00
SYD
-
DEN
2 stops36h 44m
Multiple Airlines
Deal found 24/1$1,394
Mon 16/206:00
DEN
-
SYD
1 stop31h 25m
Multiple Airlines
Sun 8/314:00
SYD
-
DEN
2 stops27h 37m
Multiple Airlines
Deal found 22/1$1,400
Tue 17/211:30
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Wed 18/314:00
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 23/1$1,402
Wed 4/321:31
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Thu 19/314:00
SYD
-
DEN
2 stops36h 44m
Multiple Airlines
Deal found 22/1$1,406
Tue 17/211:30
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Sun 8/314:00
SYD
-
DEN
2 stops27h 37m
Multiple Airlines
Deal found 24/1$1,408

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 24 January 2026.

Round-trip from

$1,339

One-way from

$672

Popular in

December

Cheapest in

April

Average price

$1,881
4/5-19/5
  • 4/5-19/5
  • 4 total stops
  • 59h 29m total
  • Denver to Sydney
Search Deals
8/3
  • 8/3
  • 2 total stops
  • 34h 35m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($596 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($105 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 24 January 2026.
Use the filters below to find and compare flights from Denver to Sydney that are best for you.

Fly from

Denver

Fly to

Sydney

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 14/2

22:43-07:25

1 stop38h 42m

Sydney Kingsford Smith

Wed 11/3

14:00-00:30

2 stops27h 30m

$1,488

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 29/6

19:50-07:20

1 stop19h 30m

Sydney Kingsford Smith

Tue 14/7

09:20-17:13

1 stop23h 53m

$1,904

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 26/2

19:52-19:45

2 stops29h 53m

Sydney Kingsford Smith

Sat 7/3

21:40-11:14

2 stops31h 34m

$1,913

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 15/2

07:40-19:45

2 stops42h 05m

Sydney Kingsford Smith

Sat 7/3

21:40-10:38

2 stops30h 58m

$1,939

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 15/2

07:40-19:45

2 stops42h 05m

Sydney Kingsford Smith

Tue 10/3

21:40-11:38

2 stops30h 58m

$1,941

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 14/2

18:45-19:45

2 stops55h 00m

Sydney Kingsford Smith

Tue 10/3

21:40-11:38

2 stops30h 58m

$1,941

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 15/2

07:40-19:45

2 stops42h 05m

Sydney Kingsford Smith

Sun 8/3

21:40-17:48

2 stops37h 08m

$1,941

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 3/3

13:10-19:45

2 stops36h 35m

Sydney Kingsford Smith

Tue 17/3

21:40-12:20

2 stops31h 40m

$1,964

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 15/2

20:04-09:00

1 stop18h 56m

Sydney Kingsford Smith

Mon 9/3

17:45-19:34

1 stop18h 49m

$1,966

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 4/2

19:05-14:40

2 stops25h 35m

Sydney Kingsford Smith

Mon 9/2

19:15-12:26

2 stops35h 11m

$1,973

Flights are sorted by cheapest return flights first.

Deals found on 22/1

Showing 1-10 of 20 results
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 16 January 2026.

The best time to book flights from Denver to Sydney is 41 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, June is the cheapest month in which you can book a flight from Denver to Sydney (average of $960). Flying from Denver to Sydney in January is currently the most expensive (average of $1,243). 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 24 January 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
974 reviews
Check prices

Overall

7.5

Boarding

7.7

Food

7.0

Entertainment

7.2

Comfort

7.5

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.
Qantas Airways
7.5
Good
974 reviews
Qantas Airways
7.5
Good
974 reviews
Check prices

Overall

7.5

Boarding

7.7

Food

7.0

Entertainment

7.2

Comfort

7.5

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.

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.

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

    According to our current data, Qantas Airways ($1,198), offers the cheapest pricing from Denver to Sydney. Qantas Airways is 27% 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, June is the cheapest month in which you can book a flight from Denver to Sydney (average of $960). Flying from Denver to Sydney in January is currently the most expensive (average of $1,243). 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
Manly
Katoomba
Terrigal
Lithgow
Leura
Coogee
Cronulla
Randwick
Bondi Beach

Browse thousands of different options on Cheapflights for your next trip

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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 24 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,198Average$1,932FlexibilityNo 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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