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Cheap flights from Denver to Sydney from $733

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
18 Aug — 25 Aug1
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 19 July 2026.

Mon 10/808:45
DEN
-
SYD
2 stops35h 05m
Multiple Airlines
Tue 25/813:15
SYD
-
DEN
2 stops26h 06m
Multiple Airlines
Deal found 15/7$1,353
Mon 26/1012:17
DEN
-
SYD
2 stops31h 18m
Multiple Airlines
Thu 12/1114:00
SYD
-
DEN
2 stops28h 25m
Multiple Airlines
Deal found 16/7$1,367
Tue 25/822:39
DEN
-
SYD
2 stops45h 11m
Multiple Airlines
Thu 3/913:15
SYD
-
DEN
2 stops27h 29m
Multiple Airlines
Deal found 17/7$1,396
Sun 23/807:00
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sat 29/813:15
SYD
-
DEN
2 stops27h 29m
Multiple Airlines
Deal found 17/7$1,442
Tue 11/807:25
DEN
-
SYD
2 stops36h 25m
Multiple Airlines
Tue 18/813:15
SYD
-
DEN
3 stops58h 18m
Multiple Airlines
Deal found 14/7$1,450
Tue 1/907:25
DEN
-
SYD
2 stops36h 25m
Multiple Airlines
Tue 8/906:15
SYD
-
DEN
3 stops56h 44m
Multiple Airlines
Deal found 17/7$1,503
Tue 8/907:25
DEN
-
SYD
1 stop31h 40m
Multiple Airlines
Tue 22/909:10
SYD
-
DEN
1 stop28h 20m
Multiple Airlines
Deal found 14/7$1,569
Sun 6/907:00
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sun 20/913:15
SYD
-
DEN
2 stops27h 10m
Multiple Airlines
Deal found 15/7$1,578
Mon 10/808:45
DEN
-
SYD
1 stop30h 20m
Multiple Airlines
Tue 18/809:10
SYD
-
DEN
1 stop30h 11m
Multiple Airlines
Deal found 15/7$1,596

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 19 July 2026.

Round-trip from

$1,353

One-way from

$733

Popular in

December

Cheapest in

September

Average price

$1,798
10/8-25/8
  • 10/8-25/8
  • 4 total stops
  • 61h 11m total
  • Denver to Sydney
Search Deals
10/9
  • 10/9
  • 3 total stops
  • 40h 03m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($452 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($82 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 19 July 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
Fastest return journey

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 11/8

18:15-18:50

2 stops32h 35m

Sydney Kingsford Smith

Sun 16/8

20:45-17:20

2 stops36h 35m

$2,086

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 18/11

19:30-19:35

2 stops54h 05m

Sydney Kingsford Smith

Sat 5/12

21:30-17:25

2 stops37h 55m

$2,278

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 10/8

06:00-19:10

3 stops45h 10m

Sydney Kingsford Smith

Tue 18/8

21:05-21:39

3 stops40h 34m

$3,322

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 26/10

20:55-12:15

2 stops46h 20m

Sydney Kingsford Smith

Thu 12/11

22:10-23:25

3 stops43h 15m

$3,445

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 19/11

12:59-21:15

2 stops38h 16m

Sydney Kingsford Smith

Sat 5/12

16:10-22:07

3 stops47h 57m

$3,627

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 18/11

06:15-19:35

3 stops67h 20m

Sydney Kingsford Smith

Sun 29/11

21:30-14:23

3 stops58h 53m

$3,652

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 1/11

07:55-17:55

3 stops40h 00m

Sydney Kingsford Smith

Sat 14/11

19:10-17:56

3 stops40h 46m

$4,487

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 13/8

23:55-19:15

3 stops51h 20m

Sydney Kingsford Smith

Wed 2/9

18:00-21:13

3 stops43h 13m

$4,806

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 18/10

14:28-07:05

3 stops47h 37m

Sydney Kingsford Smith

Tue 12/1

16:20-15:10

2 stops40h 50m

$4,914

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 17/10

14:28-07:05

3 stops47h 37m

Sydney Kingsford Smith

Tue 12/1

16:20-15:10

2 stops40h 50m

$4,917

Flights are sorted by cheapest return flights first.

Deals found on 18/7

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?

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, September is the cheapest month in which you can book a flight from Denver to Sydney (average of $1,689). Flying from Denver to Sydney in December is currently the most expensive (average of $2,573). 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 19 July 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
1,062 reviews
Check prices

Comfort

7.4

Boarding

7.7

Entertainment

7.2

Food

7.0

Crew

8.1

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.
Qantas Airways
7.5
Good
1,062 reviews
Qantas Airways
7.5
Good
1,062 reviews
Check prices

Comfort

7.4

Boarding

7.7

Entertainment

7.2

Food

7.0

Crew

8.1

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.

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?

    Turkish Airlines can get you from Denver to Sydney in just under 54h 05m. Your travel time can differ by up to . There are 13435 km between Denver and Sydney.

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

    According to our current data, Qantas Airways ($1,292), 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 $1,689). Flying from Denver to Sydney in December is currently the most expensive (average of $2,573). 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
Katoomba
Manly
Lithgow
Cronulla
Terrigal
Randwick
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 19 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,292Average$2,000FlexibilityNo 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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