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Cheap flights from Denver to Sydney from $581

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 13/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
4 Mar — 11 Mar1
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 2 February 2026.

Sun 1/306:00
DEN
-
SYD
2 stops36h 35m
Multiple Airlines
Sun 8/306:00
SYD
-
DEN
2 stops35h 30m
Multiple Airlines
Deal found 1/2$1,254
Thu 5/311:56
DEN
-
SYD
2 stops30h 39m
Multiple Airlines
Mon 23/306:00
SYD
-
DEN
2 stops35h 30m
Multiple Airlines
Deal found 1/2$1,256
Sun 22/206:00
DEN
-
SYD
1 stop31h 25m
Multiple Airlines
Sat 7/314:00
SYD
-
DEN
2 stops28h 30m
Multiple Airlines
Deal found 1/2$1,320
Tue 10/309:00
DEN
-
SYD
1 stop29h 25m
Multiple Airlines
Tue 24/314:00
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 1/2$1,328
Tue 17/322:29
DEN
-
SYD
1 stop39h 56m
Multiple Airlines
Tue 24/314:00
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 31/1$1,336
Wed 18/309:00
DEN
-
SYD
1 stop29h 25m
Multiple Airlines
Wed 25/314:00
SYD
-
DEN
2 stops36h 44m
Multiple Airlines
Deal found 1/2$1,338
Mon 2/322:43
DEN
-
SYD
1 stop38h 42m
Multiple Airlines
Mon 9/314:00
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 1/2$1,346
Sat 9/521:30
DEN
-
SYD
1 stop42h 00m
Multiple Airlines
Wed 20/513:20
SYD
-
DEN
2 stops22h 29m
Multiple Airlines
Deal found 1/2$1,359
Tue 12/513:35
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Tue 19/513:15
SYD
-
DEN
2 stops22h 34m
Multiple Airlines
Deal found 1/2$1,362
Thu 16/407:00
DEN
-
SYD
1 stop32h 30m
Multiple Airlines
Mon 20/413:15
SYD
-
DEN
2 stops37h 32m
Multiple Airlines
Deal found 1/2$1,369
Tue 10/221:31
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Tue 24/214:00
SYD
-
DEN
2 stops37h 49m
Multiple Airlines
Deal found 31/1$1,384

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 2 February 2026.

Round-trip from

$1,254

One-way from

$581

Popular in

December

Cheapest in

April

Average price

$1,737
1/3-8/3
  • 1/3-8/3
  • 4 total stops
  • 72h 05m total
  • Denver to Sydney
Search Deals
13/5
  • 13/5
  • 2 total stops
  • 30h 15m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($567 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($101 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 2 February 2026.
Use the filters below to find and compare flights from Denver to Sydney that are best for you.

Fly from

Denver

Fly to

Sydney

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 5/3

11:56-12:35

2 stops30h 39m

Sydney Kingsford Smith

Mon 23/3

06:00-00:30

2 stops35h 30m

$1,256

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 22/2

06:00-07:25

1 stop31h 25m

Sydney Kingsford Smith

Sat 7/3

14:00-00:30

2 stops28h 30m

$1,320

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 3/3

11:42-09:35

2 stops27h 53m

Sydney Kingsford Smith

Tue 10/3

10:20-12:37

1 stop19h 17m

$1,753

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 23/2

19:05-16:40

2 stops27h 35m

Sydney Kingsford Smith

Mon 2/3

11:20-18:05

2 stops24h 45m

$1,776

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 3/4

19:05-08:20

1 stop20h 15m

Sydney Kingsford Smith

Sun 12/4

09:20-12:35

1 stop19h 15m

$1,786

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 2/3

19:05-09:35

1 stop20h 30m

Sydney Kingsford Smith

Sat 7/3

11:20-12:37

1 stop19h 17m

$1,798

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 26/2

08:05-09:35

1 stop31h 30m

Sydney Kingsford Smith

Sat 7/3

11:20-18:06

2 stops24h 46m

$1,875

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 24/3

22:29-07:25

1 stop39h 56m

Sydney Kingsford Smith

Thu 2/4

18:45-00:31

2 stops22h 46m

$1,931

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 15/2

12:59-09:20

2 stops26h 21m

Sydney Kingsford Smith

Mon 9/3

11:20-12:29

1 stop18h 09m

$1,939

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 13/5

13:35-11:50

2 stops30h 15m

$581

Flights are sorted by cheapest return flights first.

Deals found on 31/1

Showing 1-10 of 18 results
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 30 January 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, June is the cheapest month in which you can book a flight from Denver to Sydney (average of $947). Flying from Denver to Sydney in January is currently the most expensive (average of $1,226). 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 2 February 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
983 reviews
Check prices

Food

7.0

Overall

7.5

Crew

8.2

Boarding

7.7

Comfort

7.5

Entertainment

7.2

Reviews

1 / 20
2.0
Mediocre

Midhat,Jan 2026

WYA - ADL

Bad. Second time in a week the flight got delayed. This time for 1.5 hours. Hopefully this is not going to be a pattern.
Qantas Airways
7.5
Good
983 reviews
Qantas Airways
7.5
Good
983 reviews
Check prices

Food

7.0

Overall

7.5

Crew

8.2

Boarding

7.7

Comfort

7.5

Entertainment

7.2

Reviews

1 / 20
2.0
Mediocre

Midhat,Jan 2026

WYA - ADL

Bad. Second time in a week the flight got delayed. This time for 1.5 hours. Hopefully this is not going to be a pattern.

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?

    Air Canada can get you from Denver to Sydney in just under 27h 53m. 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 ($1,180), offers the cheapest pricing from Denver to Sydney. Qantas Airways is 27% 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, June is the cheapest month in which you can book a flight from Denver to Sydney (average of $947). Flying from Denver to Sydney in January is currently the most expensive (average of $1,226). 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
Leura
Coogee
Cronulla
Randwick
Bondi Beach

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 2 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,180Average$1,903FlexibilityNo 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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