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Cheap flights from Denver to Sydney from $736

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 16/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
8 helmi — 15 helmi1
1 adult
1 adult, Economy, 0 bags

Cheap 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 9 tammikuu 2026.

Round-trip from

$1,243

One-way from

$736

Popular in

December

Cheapest in

April

Average price

$1,927
9/3-24/3
  • 9/3-24/3
  • 4 total stops
  • 62h 05m total
  • Denver to Sydney
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16/2
  • 16/2
  • 1 total stop
  • 31h 25m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($627 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease ($112 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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Find 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 9 tammikuu 2026.

ma 9/309:00DEN - SYD
2 stops34h 35mMultiple Airlines
ti 24/314:00SYD - DEN
2 stops27h 30mMultiple Airlines
Deal found 7/1$1,243
ma 2/206:05DEN - SYD
2 stops36h 30mMultiple Airlines
ma 9/214:00SYD - DEN
2 stops27h 29mMultiple Airlines
Deal found 6/1$1,264
pe 6/309:00DEN - SYD
2 stops33h 35mMultiple Airlines
pe 13/314:00SYD - DEN
2 stops27h 30mMultiple Airlines
Deal found 8/1$1,276
ke 11/309:00DEN - SYD
2 stops34h 35mMultiple Airlines
su 22/314:00SYD - DEN
2 stops27h 30mMultiple Airlines
Deal found 6/1$1,336
ma 9/309:00DEN - SYD
2 stops34h 35mMultiple Airlines
pe 13/306:00SYD - DEN
2 stops35h 30mMultiple Airlines
Deal found 6/1$1,346
to 12/309:00DEN - SYD
2 stops34h 35mMultiple Airlines
la 21/314:00SYD - DEN
2 stops27h 30mMultiple Airlines
Deal found 6/1$1,392
ti 10/319:44DEN - SYD
1 stop20h 16mQantas Airways
ti 24/311:20SYD - DEN
1 stop18h 09mQantas Airways
Deal found 8/1$1,398
ti 3/313:13DEN - SYD
1 stop24h 12mQantas Airways
ke 18/311:20SYD - DEN
1 stop18h 09mQantas Airways
Deal found 7/1$1,400
ti 3/313:13DEN - SYD
1 stop24h 12mQantas Airways
ti 10/311:20SYD - DEN
1 stop18h 09mQantas Airways
Deal found 8/1$1,401
ti 14/418:19DEN - SYD
1 stop20h 46mAmerican Airlines
ti 21/409:10SYD - DEN
1 stop24h 38mAmerican Airlines
Deal found 8/1$1,403
ti 10/314:14DEN - SYD
2 stops25h 46mAmerican Airlines
ti 24/311:20SYD - DEN
2 stops23h 55mAmerican Airlines
Deal found 8/1$1,409
ti 3/312:21DEN - SYD
2 stops25h 04mAmerican Airlines
ti 10/311:20SYD - DEN
1 stop24h 54mAmerican Airlines
Deal found 8/1$1,410

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 9 tammikuu 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

ma 23/2

20:04-09:00

1 stop18h 56m

Sydney Kingsford Smith

ma 2/3

11:20-12:29

1 stop19h 09m

$1,497

DenverSydney

DEN - SYD

DENSYD

Denver Intl

ti 17/2

06:30-09:00

2 stops32h 30m

Sydney Kingsford Smith

pe 20/2

11:20-18:05

1 stop24h 45m

$1,537

DenverSydney

DEN - SYD

DENSYD

Denver Intl

ma 23/2

22:43-07:25

1 stop38h 42m

Sydney Kingsford Smith

ma 2/3

10:15-09:49

2 stops41h 34m

$1,637

DenverSydney

DEN - SYD

DENSYD

Denver Intl

ma 23/2

16:03-10:30

2 stops24h 27m

Sydney Kingsford Smith

ma 2/3

11:45-16:36

2 stops22h 51m

$1,673

DenverSydney

DEN - SYD

DENSYD

Denver Intl

su 5/4

16:00-08:45

2 stops24h 45m

Sydney Kingsford Smith

la 18/4

19:20-22:15

2 stops42h 55m

$1,704

DenverSydney

DEN - SYD

DENSYD

Denver Intl

la 21/2

21:11-08:45

2 stops41h 34m

Sydney Kingsford Smith

ma 22/6

19:20-19:30

2 stops40h 10m

$1,719

DenverSydney

DEN - SYD

DENSYD

Denver Intl

to 12/3

16:10-08:45

2 stops23h 35m

Sydney Kingsford Smith

su 22/3

19:15-18:22

2 stops40h 07m

$1,776

DenverSydney

DEN - SYD

DENSYD

Denver Intl

su 15/2

14:15-09:00

2 stops24h 45m

Sydney Kingsford Smith

su 1/3

11:20-22:53

2 stops29h 33m

$1,780

DenverSydney

DEN - SYD

DENSYD

Denver Intl

to 19/3

09:00-07:25

1 stop29h 25m

Sydney Kingsford Smith

su 29/3

14:15-09:44

2 stops36h 29m

$1,804

DenverSydney

DEN - SYD

DENSYD

Denver Intl

to 12/3

15:56-08:35

1 stop23h 39m

Sydney Kingsford Smith

su 22/3

10:20-12:37

1 stop19h 17m

$1,858

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 15 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 2 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 $980). Flying from Denver to Sydney in January is currently the most expensive (average of $1,273). 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 9 tammikuu 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
968 reviews
Check prices

Crew

8.2

Comfort

7.5

Boarding

7.7

Food

7.0

Overall

7.5

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.
Qantas Airways
7.5
Good
968 reviews
Qantas Airways
7.5
Good
968 reviews
Check prices

Crew

8.2

Comfort

7.5

Boarding

7.7

Food

7.0

Overall

7.5

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.

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?

    Qantas Airways and Air New Zealand can get you from Denver to Sydney in just under 18h 56m. Your travel time can differ by up to 5h 31m. 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 ($987), offers the cheapest pricing from Denver to Sydney. Qantas Airways is 41% 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 $980). Flying from Denver to Sydney in January is currently the most expensive (average of $1,273). 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
Terrigal
Katoomba
Manly
Lithgow
Randwick
Coogee
Leura
Cronulla
Bondi Beach

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 9 tammikuu 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$987Average$1,944FlexibilityNo 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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