Find flights
When to book
Airlines
FAQs

Cheap flights from Denver to Sydney from $616

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 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
23 Mar — 30 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 21 February 2026.

Sat 28/211:50
DEN
-
SYD
2 stops30h 45m
Multiple Airlines
Sat 14/314:00
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 17/2$1,255
Mon 6/409:20
DEN
-
SYD
2 stops34h 30m
Multiple Airlines
Mon 13/413:15
SYD
-
DEN
2 stops27h 16m
Multiple Airlines
Deal found 20/2$1,520
Tue 7/422:30
DEN
-
SYD
1 stop41h 00m
Multiple Airlines
Tue 12/506:20
SYD
-
DEN
2 stops29h 29m
Multiple Airlines
Deal found 17/2$1,546
Tue 7/422:30
DEN
-
SYD
2 stops45h 20m
Multiple Airlines
Mon 11/517:50
SYD
-
DEN
1 stop32h 57m
Multiple Airlines
Deal found 17/2$1,548
Mon 27/406:00
DEN
-
SYD
2 stops38h 05m
Multiple Airlines
Fri 8/517:50
SYD
-
DEN
1 stop38h 02m
Multiple Airlines
Deal found 19/2$1,551
Tue 7/422:30
DEN
-
SYD
1 stop41h 00m
Multiple Airlines
Wed 6/511:00
SYD
-
DEN
2 stops24h 49m
Multiple Airlines
Deal found 17/2$1,555
Tue 7/422:30
DEN
-
SYD
2 stops45h 20m
Multiple Airlines
Fri 8/517:50
SYD
-
DEN
1 stop38h 02m
Multiple Airlines
Deal found 17/2$1,557
Wed 8/409:10
DEN
-
SYD
1 stop30h 20m
Multiple Airlines
Tue 12/506:20
SYD
-
DEN
2 stops29h 29m
Multiple Airlines
Deal found 17/2$1,565
Wed 8/422:30
DEN
-
SYD
2 stops45h 20m
Multiple Airlines
Mon 11/517:50
SYD
-
DEN
1 stop32h 57m
Multiple Airlines
Deal found 17/2$1,568
Wed 25/319:05
DEN
-
SYD
1 stop20h 30m
Air Canada
Tue 7/409:20
SYD
-
DEN
1 stop19h 15m
Air Canada
Deal found 19/2$1,570

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 21 February 2026.

Round-trip from

$1,520

One-way from

$616

Popular in

December

Cheapest in

April

Average price

$1,880
6/4-13/4
  • 6/4-13/4
  • 4 total stops
  • 61h 46m total
  • Denver to Sydney
Search Deals
19/5
  • 19/5
  • 2 total stops
  • 46h 20m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($466 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($74 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 21 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

Mon 11/5

16:34-08:45

2 stops24h 11m

Sydney Kingsford Smith

Tue 26/5

11:55-22:15

2 stops26h 20m

$1,587

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 16/3

19:05-08:35

1 stop20h 30m

Sydney Kingsford Smith

Thu 28/5

09:20-17:00

1 stop23h 40m

$1,636

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 13/7

13:25-07:00

1 stop25h 35m

Sydney Kingsford Smith

Mon 27/7

10:20-12:22

1 stop18h 02m

$1,941

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 13/7

19:15-06:50

1 stop19h 35m

Sydney Kingsford Smith

Mon 27/7

09:15-11:30

1 stop18h 15m

$1,942

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 5/4

15:55-07:00

2 stops23h 05m

Sydney Kingsford Smith

Mon 13/4

10:20-19:40

2 stops25h 20m

$1,948

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 5/4

13:10-06:50

2 stops25h 40m

Sydney Kingsford Smith

Tue 14/4

09:15-14:45

2 stops21h 30m

$1,949

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 13/6

18:25-06:50

2 stops44h 25m

Sydney Kingsford Smith

Wed 24/6

09:15-11:30

1 stop18h 15m

$1,969

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 12/3

12:38-07:30

1 stop25h 52m

Sydney Kingsford Smith

Mon 23/3

09:40-15:07

2 stops22h 27m

$2,019

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 9/4

06:30-06:50

2 stops32h 20m

Sydney Kingsford Smith

Mon 11/5

09:15-12:19

1 stop19h 04m

$2,020

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 20/5

13:35-11:50

2 stops30h 15m

$616

Flights are sorted by cheapest return flights first.

Deals found on 17/2

Showing 1-10 of 16 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 20 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 $429). Flying from Denver to Sydney in January is currently the most expensive (average of $1,374). 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 21 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
995 reviews
Check prices

Crew

8.1

Comfort

7.4

Entertainment

7.2

Overall

7.5

Boarding

7.7

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
995 reviews
Qantas Airways
7.5
Good
995 reviews
Check prices

Crew

8.1

Comfort

7.4

Entertainment

7.2

Overall

7.5

Boarding

7.7

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?

    Air New Zealand, Air Canada, and United Airlines can get you from Denver to Sydney in just under 20h 30m. Your travel time can differ by up to 5h 05m. 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 ($1,240), offers the cheapest pricing from Denver to Sydney. Qantas Airways is 30% 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 $429). Flying from Denver to Sydney in January is currently the most expensive (average of $1,374). 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
Lithgow
Terrigal
Bondi Beach
Leura
Coogee
Cronulla
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 21 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,240Average$1,938FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.