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Cheap flights from Denver to Sydney from $655

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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
19 May — 26 May1
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 April 2026.

Thu 14/507:00
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Thu 21/513:15
SYD
-
DEN
2 stops22h 51m
Multiple Airlines
Deal found 16/4$1,363
Thu 2/707:00
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sat 25/713:15
SYD
-
DEN
2 stops27h 25m
Multiple Airlines
Deal found 16/4$1,485
Sun 16/807:00
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sun 30/813:15
SYD
-
DEN
2 stops27h 25m
Multiple Airlines
Deal found 18/4$1,504
Fri 3/707:00
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sat 11/713:15
SYD
-
DEN
2 stops27h 25m
Multiple Airlines
Deal found 17/4$1,541
Wed 13/522:39
DEN
-
SYD
2 stops45h 11m
Multiple Airlines
Tue 19/517:50
SYD
-
DEN
1 stop32h 14m
Multiple Airlines
Deal found 15/4$1,592
Sat 20/607:00
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sun 2/814:10
SYD
-
DEN
3 stops29h 48m
Multiple Airlines
Deal found 17/4$1,606
Sun 5/707:00
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sun 19/713:15
SYD
-
DEN
2 stops27h 25m
Multiple Airlines
Deal found 18/4$1,616
Tue 5/514:23
DEN
-
SYD
2 stops25h 07m
Multiple Airlines
Wed 13/509:10
SYD
-
DEN
1 stop20h 02m
Multiple Airlines
Deal found 18/4$1,656

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 April 2026.

Round-trip from

$1,363

One-way from

$655

Popular in

December

Cheapest in

April

Average price

$1,649
14/5-21/5
  • 14/5-21/5
  • 4 total stops
  • 59h 41m total
  • Denver to Sydney
Search Deals
6/6
  • 6/6
  • 2 total stops
  • 45h 11m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($309 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($70 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 April 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

Wed 26/8

12:03-07:30

2 stops27h 27m

Sydney Kingsford Smith

Tue 1/9

17:50-11:07

2 stops33h 17m

$1,870

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 1/9

15:00-07:30

2 stops24h 30m

Sydney Kingsford Smith

Tue 15/9

17:50-11:05

2 stops33h 15m

$1,871

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 26/8

19:06-18:50

2 stops31h 44m

Sydney Kingsford Smith

Tue 1/9

20:45-11:07

2 stops30h 22m

$2,026

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 1/5

18:07-18:50

2 stops32h 43m

Sydney Kingsford Smith

Sun 10/5

20:45-12:06

2 stops31h 21m

$2,033

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 1/10

19:06-18:50

2 stops31h 44m

Sydney Kingsford Smith

Thu 15/10

20:45-10:39

2 stops30h 54m

$2,095

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 27/8

19:28-18:50

2 stops31h 22m

Sydney Kingsford Smith

Sun 6/9

20:45-12:21

2 stops31h 36m

$2,116

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 25/6

18:15-18:50

2 stops32h 35m

Sydney Kingsford Smith

Fri 10/7

20:45-19:25

2 stops38h 40m

$2,186

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 5/7

18:05-07:00

1 stop20h 55m

Sydney Kingsford Smith

Tue 21/7

10:20-21:28

1 stop27h 08m

$2,454
Fastest return journey

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 6/7

19:43-07:00

1 stop19h 17m

Sydney Kingsford Smith

Sun 2/8

10:20-12:22

1 stop18h 02m

$2,454
Cheapest one-way

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 6/6

22:39-11:50

2 stops45h 11m

$655

Flights are sorted by cheapest return flights first.

Deals found on 18/4

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 17 April 2026.

The best time to book flights from Denver to Sydney is 67 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, April is the cheapest month in which you can book a flight from Denver to Sydney (average of $1,649). Flying from Denver to Sydney in December is currently the most expensive (average of $2,434). 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 April 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
1,020 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.2

Comfort

7.5

Food

7.0

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
1,020 reviews
Qantas Airways
7.5
Good
1,020 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.2

Comfort

7.5

Food

7.0

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?

    Alaska Airlines can get you from Denver to Sydney in just under 24h 30m. 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 ($1,258), 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, April is the cheapest month in which you can book a flight from Denver to Sydney (average of $1,649). Flying from Denver to Sydney in December is currently the most expensive (average of $2,434). 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
Terrigal
Lithgow
Cronulla
Manly
Bondi Beach
Leura
Randwick
Coogee

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 19 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,258Average$1,907FlexibilityNo 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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