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Cheap flights from Denver to Sydney from $820

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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
4 May — 11 May1
1 adult

Cheapflights Tip: The best prices from Denver Intl to Sydney Kingsford Smith are usually found in April or March, booked 4 days in advance, depart on a Wednesday or Saturday and return on a Monday

Cheap 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 29 April 2025.

Round-trip from

$1,727

One-way from

$820

Popular in

December

Cheapest in

April

Average price

$1,360
Air New Zealand
  • Air New Zealand
  • 8/9-13/10
  • 4 total stops
  • 53h 07m total
  • Denver to Sydney
Search Deals
10/7
  • 10/7
  • 2 total stops
  • 38h 09m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($372 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($71 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Denver to Sydney

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 29 April 2025.

Thu 13/1112:55DEN - SYD
2 stops27h 25mQantas Airways
Sat 22/1107:30SYD - DEN
2 stops28h 12mQantas Airways
Deal found 28/4$1,720
Mon 8/913:35DEN - SYD
2 stops27h 10mAir New Zealand
Mon 13/1011:50SYD - DEN
2 stops25h 57mAir New Zealand
Deal found 28/4$1,727
Wed 28/514:58DEN - SYD
2 stops31h 42mMultiple Airlines
Wed 4/617:45SYD - DEN
1 stop32h 03mMultiple Airlines
Deal found 28/4$1,911
Tue 16/913:38DEN - SYD
2 stops25h 42mAir Canada
Tue 23/909:20SYD - DEN
1 stop23h 13mAir Canada
Deal found 28/4$1,927
Thu 23/1018:51DEN - SYD
2 stops25h 24mFiji Airways
Thu 22/114:10SYD - DEN
2 stops23h 51mFiji Airways
Deal found 28/4$1,939
Sun 22/617:33DEN - SYD
1 stop21h 57mAmerican Airlines
Mon 7/717:45SYD - DEN
2 stops30h 24mAmerican Airlines
Deal found 28/4$2,051
Sun 22/619:00DEN - SYD
1 stop19h 55mUnited Airlines
Mon 7/710:20SYD - DEN
1 stop25h 13mUnited Airlines
Deal found 28/4$2,105
Thu 1/519:55DEN - SYD
2 stops31h 50mAlaska Airlines
Sun 4/521:40SYD - DEN
2 stops37h 17mAlaska Airlines
Deal found 27/4$2,126
Wed 24/1212:59DEN - SYD
1 stop25h 36mDelta
Wed 14/111:05SYD - DEN
1 stop18h 27mDelta
Deal found 28/4$2,134

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 29 April 2025.
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

Mon 8/9

13:35-08:45

2 stops27h 10m

Sydney Kingsford Smith

Mon 13/10

11:50-20:47

2 stops25h 57m

$1,727

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 28/5

14:58-14:40

2 stops31h 42m

Sydney Kingsford Smith

Wed 4/6

17:45-09:48

1 stop32h 03m

$1,911

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 16/9

13:38-07:20

2 stops25h 42m

Sydney Kingsford Smith

Tue 23/9

09:20-16:33

1 stop23h 13m

$1,927

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 23/10

18:51-13:15

2 stops25h 24m

Sydney Kingsford Smith

Thu 22/1

14:10-20:01

2 stops23h 51m

$1,939

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 3/8

18:07-07:05

1 stop20h 58m

Sydney Kingsford Smith

Sun 17/8

09:10-17:27

1 stop24h 17m

$1,972

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 22/6

17:33-07:30

1 stop21h 57m

Sydney Kingsford Smith

Mon 7/7

17:45-08:09

2 stops30h 24m

$2,051

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 22/6

19:00-06:55

1 stop19h 55m

Sydney Kingsford Smith

Mon 7/7

10:20-19:33

1 stop25h 13m

$2,105

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 27/5

19:05-19:45

2 stops32h 40m

Sydney Kingsford Smith

Tue 3/6

21:40-16:49

2 stops35h 09m

$2,162

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 10/10

12:59-07:35

1 stop25h 36m

Sydney Kingsford Smith

Sun 19/10

10:25-18:09

1 stop24h 44m

$2,212

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 21/8

19:50-19:00

2 stops55h 10m

Sydney Kingsford Smith

Sun 7/9

20:55-21:59

3 stops41h 04m

$2,760

Flights are sorted by cheapest return flights first.

Deals found on 27/4

Showing 1-10 of 23 results
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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 25 April 2025.

The best time to book flights from Denver to Sydney is 4 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, May is the cheapest month in which you can book a flight from Denver to Sydney (average of $129). Flying from Denver to Sydney in October is currently the most expensive (average of $171). 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.

What is the cheapest time of day to fly from DEN to SYD?

Find hourly flight availability from Denver to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 April 2025.

When flying from Denver to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 33% versus a flight in the evening.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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 29 April 2025.
Peruse reviews from past customers who have flown with Air Tahiti Nui, Fiji Airways and Singapore Airlines from Denver to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Crew

9.1

Food

7.8

Boarding

8.7

Entertainment

7.3

Overall

8.8

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.8
Very Good
62 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Crew

9.1

Food

7.8

Boarding

8.7

Entertainment

7.3

Overall

8.8

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Fiji Airways
8.1
Very Good
190 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Crew

9.1

Food

7.8

Boarding

8.7

Entertainment

7.3

Overall

8.8

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Singapore Airlines
8.1
Very Good
1,292 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Crew

9.1

Food

7.8

Boarding

8.7

Entertainment

7.3

Overall

8.8

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Delta
8.0
Very Good
7,929 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Crew

9.1

Food

7.8

Boarding

8.7

Entertainment

7.3

Overall

8.8

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air New Zealand
8.0
Very Good
471 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Crew

9.1

Food

7.8

Boarding

8.7

Entertainment

7.3

Overall

8.8

Comfort

8.1

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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 are the cheapest airlines flying from Denver to Sydney round-trip?

    According to our current data, Air New Zealand ($1,727), Air Canada ($1,927), and Fiji Airways ($1,939) offers the cheapest pricing from Denver to Sydney. Air New Zealand is 1% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Denver to Sydney one-way?

    To fly one-way, consider booking your trip with Qantas Airways, which is currently one of the cheapest options available, starting at $1,213. Alaska Airlines flights start at $1,243 while deals on American Airlines start at $1,422 one-way.

  • 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, May is the cheapest month in which you can book a flight from Denver to Sydney (average of $129). Flying from Denver to Sydney in October is currently the most expensive (average of $171). 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 Denver?

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

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Denver to Sydney

Discover the top 3 airlines 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 29 April 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,007Average$1,464FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Qantas AirwaysCheapest$1,284Average$2,089FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapest$1,957Average$2,578FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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