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Cheap flights from Denver to Sydney from $774

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
9 Sep — 16 Sep1
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 10 August 2026.

Sat 24/1006:30 -
2 stops46h 35m
Mon 9/1106:00 -
2 stops36h 25m
Deal found 6/8$1,380
Sat 19/913:10 -
2 stops30h 40m
Tue 29/906:15 -
3 stops33h 29m
Deal found 7/8$1,416
Wed 9/1206:25 -
2 stops36h 10m
Wed 16/1214:00 -
2 stops27h 28m
Deal found 8/8$1,419
Thu 22/1006:30 -
1 stop32h 00m
Thu 29/1014:00 -
2 stops36h 55m
Deal found 10/8$1,445
Sun 8/1112:02 -
2 stops30h 33m
Mon 16/1114:00 -
2 stops28h 25m
Deal found 10/8$1,447
Sat 24/1022:29 -
1 stop38h 56m
Tue 10/1114:00 -
2 stops37h 55m
Deal found 10/8$1,448
Fri 6/1112:02 -
2 stops40h 03m
Mon 16/1114:00 -
2 stops28h 25m
Deal found 10/8$1,454
Fri 30/1022:29 -
1 stop38h 56m
Tue 10/1114:00 -
2 stops37h 55m
Deal found 8/8$1,468
Wed 21/1012:17 -
1 stop26h 13m
Thu 29/1014:00 -
2 stops36h 55m
Deal found 10/8$1,478
Fri 30/1022:29 -
1 stop38h 56m
Wed 4/1114:00 -
2 stops22h 12m
Deal found 10/8$1,485
Sat 24/1012:17 -
1 stop25h 08m
Thu 29/1014:00 -
2 stops36h 55m
Deal found 10/8$1,486

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 10 August 2026.

Round-trip from

$1,380

One-way from

$774

Popular in

December

Cheapest in

May

Average price

$2,006
24/10-9/11
  • 24/10-9/11
  • 4 total stops
  • 83h 00m total
  • Denver to Sydney
Search Deals
12/9
  • 12/9
  • 3 total stops
  • 50h 20m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($423 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($80 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 10 August 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 Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Tue 17/11

12:45-08:30

1 stop25h 45m

Sydney Kingsford Smith

Tue 1/12

10:40-11:47

1 stop19h 07m

$2,134

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 24/8

19:55-06:50

1 stop18h 55m

Sydney Kingsford Smith

Mon 21/9

09:15-18:11

1 stop24h 56m

$2,134

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 24/8

19:55-06:50

1 stop18h 55m

Sydney Kingsford Smith

Sun 6/9

09:15-18:22

1 stop25h 07m

$2,134

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Wed 26/8

17:34-18:50

2 stops33h 16m

Sydney Kingsford Smith

Sun 30/8

20:45-12:20

2 stops31h 35m

$2,144

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Wed 4/11

20:30-19:25

2 stops52h 55m

Sydney Kingsford Smith

Sun 8/11

21:35-17:25

2 stops37h 50m

$2,257
Fastest return journey

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Fri 4/12

19:49-08:30

1 stop18h 41m

Sydney Kingsford Smith

Sat 12/12

10:40-11:47

1 stop19h 07m

$2,276

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Thu 24/12

12:20-08:30

2 stops26h 10m

Sydney Kingsford Smith

Thu 31/12

10:40-23:00

1 stop30h 20m

$2,296

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Tue 25/8

12:29-06:50

1 stop26h 21m

Sydney Kingsford Smith

Sun 6/9

09:15-12:49

1 stop19h 34m

$2,482

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Thu 1/10

18:35-10:45

3 stops48h 10m

Sydney Kingsford Smith

Thu 15/10

22:10-09:50

2 stops52h 40m

$3,737

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 21/9

08:08-07:05

2 stops30h 57m

Sydney Kingsford Smith

Mon 28/9

09:10-18:10

2 stops25h 00m

$4,100

Flights are sorted by cheapest return flights first.

Deals found on 8/8

Showing 1-10 of 21 resultsSorted by cheapest first
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2
3

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?

The best time to book flights from Denver to Sydney is 9 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 $1,669). Flying from Denver to Sydney in December is currently the most expensive (average of $2,542). 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?

Airfare is below average for this route at the moment.

Denver to Sydney flights typically cost between $1,491 and $2,551 in October.
The cheapest return price found within the last 5 days was $1,380 on Multiple Airlines (24 Oct–9 Nov).

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 10 August 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
1,081 reviews
Check prices

Crew

8.1

Overall

7.5

Entertainment

7.2

Food

7.0

Boarding

7.7

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Robyn,Aug 2026

LAX - SYD

I was flabbergasted when the crew completely missed me in the distribution of food and drinks in Business Class - even after they looked twice at my opened table. However - this has happened to me on my last longhaul QF flight and with the same hosty (older woman with curly bob). She obviously cannot handly the stress of initial boarding as both times she has come back to me with an apology. When compared to our usual Business/ First longhauls with Qatar or Emirates, Qantas leave ALOT to be desired. I would highly recommend going with another airline. BTW I'm a 4th gen Aussie and previous Qantas employee - I would love to love them if they provided service but they just dont.
Qantas Airways
7.5
Good
1,081 reviews
Qantas Airways
7.5
Good
1,081 reviews
Check prices

Crew

8.1

Overall

7.5

Entertainment

7.2

Food

7.0

Boarding

7.7

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Robyn,Aug 2026

LAX - SYD

I was flabbergasted when the crew completely missed me in the distribution of food and drinks in Business Class - even after they looked twice at my opened table. However - this has happened to me on my last longhaul QF flight and with the same hosty (older woman with curly bob). She obviously cannot handly the stress of initial boarding as both times she has come back to me with an apology. When compared to our usual Business/ First longhauls with Qatar or Emirates, Qantas leave ALOT to be desired. I would highly recommend going with another airline. BTW I'm a 4th gen Aussie and previous Qantas employee - I would love to love them if they provided service but they just dont.

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?

    Delta and Turkish Airlines can get you from Denver to Sydney in just under 25h 45m. Your travel time can differ by up to 27h 10m. 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 ($1,277), 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, May is the cheapest month in which you can book a flight from Denver to Sydney (average of $1,669). Flying from Denver to Sydney in December is currently the most expensive (average of $2,542). 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
Lithgow
Cronulla
Randwick
Terrigal
Leura
Bondi Beach
Coogee

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 10 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,277Average$1,976FlexibilityNo 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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