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Cheap flights from Denver to Sydney from $558

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
9 Apr — 16 Apr1
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 March 2026.

Mon 18/506:05
DEN
-
SYD
2 stops38h 00m
Multiple Airlines
Mon 1/613:15
SYD
-
DEN
2 stops22h 02m
Multiple Airlines
Deal found 8/3$1,307
Wed 29/421:30
DEN
-
SYD
1 stop42h 00m
Multiple Airlines
Wed 13/511:00
SYD
-
DEN
2 stops24h 49m
Multiple Airlines
Deal found 6/3$1,555
Mon 4/506:00
DEN
-
SYD
1 stop33h 30m
Multiple Airlines
Tue 12/506:20
SYD
-
DEN
2 stops44h 27m
Multiple Airlines
Deal found 6/3$1,558
Sun 26/416:34
DEN
-
SYD
2 stops26h 06m
Air New Zealand
Sun 10/509:55
SYD
-
DEN
2 stops26h 53m
Air New Zealand
Deal found 6/3$1,590
Mon 20/416:34
DEN
-
SYD
2 stops24h 11m
Air New Zealand
Mon 27/411:55
SYD
-
DEN
2 stops26h 20m
Air New Zealand
Deal found 5/3$1,592
Tue 25/817:50
DEN
-
SYD
2 stops22h 55m
Air New Zealand
Sun 6/909:55
SYD
-
DEN
2 stops26h 11m
Air New Zealand
Deal found 10/3$1,593
Tue 21/421:30
DEN
-
SYD
1 stop42h 00m
Multiple Airlines
Tue 28/406:20
SYD
-
DEN
2 stops29h 29m
Multiple Airlines
Deal found 7/3$1,597
Mon 23/319:05
DEN
-
SYD
1 stop20h 30m
Air Canada
Wed 8/409:20
SYD
-
DEN
1 stop19h 15m
Air Canada
Deal found 9/3$1,603
Mon 19/1020:39
DEN
-
SYD
2 stops43h 06m
Air New Zealand
Mon 2/1111:45
SYD
-
DEN
2 stops28h 16m
Air New Zealand
Deal found 9/3$1,605
Wed 2/917:45
DEN
-
SYD
2 stops23h 00m
Air New Zealand
Wed 16/911:55
SYD
-
DEN
2 stops26h 06m
Air New Zealand
Deal found 5/3$1,606
Tue 4/815:43
DEN
-
SYD
2 stops26h 57m
Air New Zealand
Wed 12/809:55
SYD
-
DEN
2 stops25h 35m
Air New Zealand
Deal found 9/3$1,609

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 March 2026.

Round-trip from

$1,307

One-way from

$558

Popular in

December

Cheapest in

April

Average price

$1,738
18/5-1/6
  • 18/5-1/6
  • 4 total stops
  • 60h 02m total
  • Denver to Sydney
Search Deals
5/5
  • 5/5
  • 2 total stops
  • 40h 35m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($330 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($64 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 March 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

Fri 10/7

19:34-06:55

1 stop19h 21m

Sydney Kingsford Smith

Sat 18/7

10:20-12:22

1 stop18h 02m

$2,147

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 3/4

13:00-10:20

2 stops28h 20m

Sydney Kingsford Smith

Sun 12/4

09:10-12:06

1 stop18h 56m

$2,400

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 17/7

18:12-07:05

1 stop20h 53m

Sydney Kingsford Smith

Mon 27/7

06:25-17:40

2 stops27h 15m

$2,752

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 25/8

23:59-19:15

3 stops51h 16m

Sydney Kingsford Smith

Sun 6/9

11:00-11:30

2 stops40h 30m

$2,947

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 10/4

12:41-07:05

1 stop26h 24m

Sydney Kingsford Smith

Mon 13/4

09:10-12:06

1 stop18h 56m

$3,070

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 6/4

17:42-16:45

3 stops55h 03m

Sydney Kingsford Smith

Tue 21/4

18:00-18:25

2 stops64h 25m

$3,699

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 13/5

23:59-19:15

3 stops51h 16m

Sydney Kingsford Smith

Fri 22/5

11:00-12:19

2 stops41h 19m

$3,712

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 2/7

23:59-19:15

3 stops51h 16m

Sydney Kingsford Smith

Thu 16/7

15:00-22:55

3 stops47h 55m

$4,056

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 8/8

23:59-19:15

3 stops51h 16m

Sydney Kingsford Smith

Sat 15/8

15:00-22:55

3 stops47h 55m

$4,831

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 19/6

23:59-19:15

3 stops51h 16m

Sydney Kingsford Smith

Fri 26/6

15:00-22:55

3 stops47h 55m

$5,255

Flights are sorted by cheapest return flights first.

Deals found on 9/3

Showing 1-10 of 23 resultsSorted by cheapest first
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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 6 March 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, September is the cheapest month in which you can book a flight from Denver to Sydney (average of $431). Flying from Denver to Sydney in January is currently the most expensive (average of $1,415). 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.

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 March 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
1,002 reviews
Check prices

Comfort

7.4

Crew

8.1

Entertainment

7.2

Boarding

7.7

Overall

7.5

Food

7.0

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
1,002 reviews
Qantas Airways
7.5
Good
1,002 reviews
Check prices

Comfort

7.4

Crew

8.1

Entertainment

7.2

Boarding

7.7

Overall

7.5

Food

7.0

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?

    United Airlines and Qantas Airways can get you from Denver to Sydney in just under 19h 21m. Your travel time can differ by up to 8h 59m. 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 ($1,285), 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 $431). Flying from Denver to Sydney in January is currently the most expensive (average of $1,415). 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
Bondi Beach
Coogee
Cronulla
Leura
Randwick

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 10 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,285Average$1,948FlexibilityNo 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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