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Cheap flights from Denver to Sydney from $583

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
3 Apr — 10 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 4 March 2026.

Mon 23/319:05
DEN
-
SYD
1 stop20h 30m
Air Canada
Wed 8/409:20
SYD
-
DEN
1 stop19h 15m
Air Canada
Deal found 2/3$1,483
Wed 15/421:30
DEN
-
SYD
2 stops46h 20m
Multiple Airlines
Wed 22/417:50
SYD
-
DEN
1 stop40h 26m
Multiple Airlines
Deal found 1/3$1,531
Sat 18/409:49
DEN
-
SYD
1 stop29h 41m
Multiple Airlines
Sat 25/420:45
SYD
-
DEN
2 stops23h 30m
Multiple Airlines
Deal found 3/3$1,537
Mon 13/422:30
DEN
-
SYD
1 stop41h 00m
Multiple Airlines
Tue 28/406:20
SYD
-
DEN
2 stops44h 27m
Multiple Airlines
Deal found 3/3$1,548
Fri 17/422:29
DEN
-
SYD
1 stop41h 01m
Multiple Airlines
Mon 4/509:05
SYD
-
DEN
2 stops41h 42m
Multiple Airlines
Deal found 3/3$1,560
Wed 22/413:40
DEN
-
SYD
2 stops30h 10m
Multiple Airlines
Tue 28/417:50
SYD
-
DEN
1 stop32h 57m
Multiple Airlines
Deal found 4/3$1,562
Tue 14/421:30
DEN
-
SYD
1 stop42h 00m
Multiple Airlines
Tue 21/417:50
SYD
-
DEN
1 stop32h 57m
Multiple Airlines
Deal found 28/2$1,564
Wed 1/422:30
DEN
-
SYD
2 stops45h 20m
Multiple Airlines
Tue 21/417:50
SYD
-
DEN
1 stop32h 57m
Multiple Airlines
Deal found 2/3$1,565
Mon 23/322:29
DEN
-
SYD
1 stop39h 56m
Multiple Airlines
Wed 8/417:50
SYD
-
DEN
1 stop22h 41m
Multiple Airlines
Deal found 3/3$1,568
Tue 14/419:05
DEN
-
SYD
1 stop20h 15m
Air Canada
Tue 21/409:20
SYD
-
DEN
1 stop19h 15m
Air Canada
Deal found 4/3$1,572
Tue 12/519:50
DEN
-
SYD
1 stop19h 30m
Air Canada
Tue 26/509:20
SYD
-
DEN
1 stop23h 40m
Air Canada
Deal found 4/3$1,574

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 4 March 2026.

Round-trip from

$1,483

One-way from

$583

Popular in

December

Cheapest in

April

Average price

$1,571
Air Canada
  • Air Canada
  • 23/3-8/4
  • 2 total stops
  • 39h 45m total
  • Denver to Sydney
Search Deals
11/5
  • 11/5
  • 2 total stops
  • 37h 05m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($472 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($73 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 4 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

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 25/3

16:10-06:20

2 stops21h 10m

Sydney Kingsford Smith

Tue 7/4

10:20-19:40

2 stops25h 20m

$1,934

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 3/4

20:04-08:05

1 stop19h 01m

Sydney Kingsford Smith

Sun 12/4

09:10-12:06

1 stop18h 56m

$1,992

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 15/6

18:05-06:55

2 stops20h 50m

Sydney Kingsford Smith

Sat 27/6

10:20-16:16

2 stops21h 56m

$2,076

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

$2,810

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 12/5

18:30-19:15

2 stops32h 45m

Sydney Kingsford Smith

Tue 26/5

15:00-23:02

3 stops48h 02m

$2,844

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 19/3

16:40-07:00

1 stop21h 20m

Sydney Kingsford Smith

Mon 30/3

10:30-18:25

1 stop24h 55m

$2,848

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 3/5

23:59-19:15

3 stops51h 16m

Sydney Kingsford Smith

Thu 7/5

15:00-23:01

3 stops48h 01m

$3,441

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 30/6

11:31-15:10

3 stops35h 39m

Sydney Kingsford Smith

Wed 22/7

19:25-17:37

3 stops38h 12m

$3,513

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

$3,649

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 16/3

18:10-21:15

2 stops34h 05m

Sydney Kingsford Smith

Thu 28/5

15:00-23:02

3 stops48h 02m

$4,502

Flights are sorted by cheapest return flights first.

Deals found on 4/3

Showing 1-10 of 21 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 27 February 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 $430). Flying from Denver to Sydney in January is currently the most expensive (average of $1,409). 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 4 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
1,001 reviews
Check prices

Overall

7.5

Crew

8.1

Boarding

7.7

Comfort

7.4

Food

7.0

Entertainment

7.2

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
1,001 reviews
Qantas Airways
7.5
Good
1,001 reviews
Check prices

Overall

7.5

Crew

8.1

Boarding

7.7

Comfort

7.4

Food

7.0

Entertainment

7.2

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, Qantas Airways, and Delta can get you from Denver to Sydney in just under 19h 01m. Your travel time can differ by up to 11h 24m. 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 ($1,280), offers the cheapest pricing from Denver to Sydney. Qantas Airways is 28% 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 $430). Flying from Denver to Sydney in January is currently the most expensive (average of $1,409). 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
Terrigal
Lithgow
Bondi Beach
Coogee
Cronulla
Leura
Randwick

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 4 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,280Average$1,940FlexibilityNo 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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