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Cheap flights from Denver to Sydney from $726

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
16 Jun — 23 Jun1
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 17 May 2026.

Wed 9/907:30
DEN
-
SYD
1 stop32h 00m
Multiple Airlines
Wed 16/913:15
SYD
-
DEN
2 stops24h 15m
Multiple Airlines
Deal found 16/5$1,450
Tue 6/1012:02
DEN
-
SYD
1 stop26h 28m
Multiple Airlines
Tue 13/1014:15
SYD
-
DEN
2 stops39h 34m
Multiple Airlines
Deal found 13/5$1,517
Sun 9/807:00
DEN
-
SYD
1 stop32h 30m
Multiple Airlines
Tue 18/813:15
SYD
-
DEN
2 stops36h 47m
Multiple Airlines
Deal found 17/5$1,535
Mon 26/1022:29
DEN
-
SYD
1 stop38h 56m
Multiple Airlines
Wed 11/1114:00
SYD
-
DEN
2 stops22h 12m
Multiple Airlines
Deal found 14/5$1,537
Mon 2/1122:29
DEN
-
SYD
1 stop37h 56m
Multiple Airlines
Tue 10/1114:00
SYD
-
DEN
2 stops22h 12m
Multiple Airlines
Deal found 14/5$1,570
Tue 2/622:39
DEN
-
SYD
1 stop40h 51m
Multiple Airlines
Fri 12/613:20
SYD
-
DEN
2 stops36h 29m
Multiple Airlines
Deal found 13/5$1,632
Wed 28/1012:02
DEN
-
SYD
1 stop25h 23m
Multiple Airlines
Sat 7/1114:00
SYD
-
DEN
2 stops22h 12m
Multiple Airlines
Deal found 16/5$1,636
Mon 3/822:39
DEN
-
SYD
1 stop40h 51m
Multiple Airlines
Fri 14/813:15
SYD
-
DEN
2 stops27h 21m
Multiple Airlines
Deal found 16/5$1,660
Sun 1/1112:02
DEN
-
SYD
1 stop24h 23m
Multiple Airlines
Sun 15/1114:00
SYD
-
DEN
2 stops28h 25m
Multiple Airlines
Deal found 12/5$1,661
Wed 3/607:20
DEN
-
SYD
1 stop32h 10m
Multiple Airlines
Fri 12/613:20
SYD
-
DEN
2 stops36h 29m
Multiple Airlines
Deal found 13/5$1,693
Sun 1/1112:02
DEN
-
SYD
1 stop24h 23m
Multiple Airlines
Mon 9/1114:00
SYD
-
DEN
2 stops37h 55m
Multiple Airlines
Deal found 16/5$1,696

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 17 May 2026.

Round-trip from

$1,450

One-way from

$726

Popular in

December

Cheapest in

August

Average price

$1,730
9/9-16/9
  • 9/9-16/9
  • 3 total stops
  • 56h 15m total
  • Denver to Sydney
Search Deals
16/9
  • 16/9
  • 1 total stop
  • 27h 28m total
  • Denver to Sydney
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($323 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 May 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 17 May 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

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 27/10

18:55-19:45

2 stops31h 50m

Sydney Kingsford Smith

Tue 10/11

21:40-14:15

2 stops34h 35m

$2,037

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 27/8

19:06-18:50

2 stops31h 44m

Sydney Kingsford Smith

Sun 6/9

20:45-12:23

2 stops31h 38m

$2,118
Fastest return journey

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 13/11

16:45-12:35

2 stops25h 50m

Sydney Kingsford Smith

Fri 4/12

14:00-18:44

2 stops22h 44m

$2,177

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 28/8

18:26-11:50

2 stops25h 24m

Sydney Kingsford Smith

Mon 31/8

13:15-23:59

2 stops26h 44m

$2,177

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 24/8

18:26-11:50

2 stops25h 24m

Sydney Kingsford Smith

Sun 6/9

13:15-23:59

2 stops26h 44m

$2,177

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 13/11

14:55-19:45

2 stops34h 50m

Sydney Kingsford Smith

Sun 29/11

21:40-11:34

2 stops31h 54m

$2,321

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 12/11

08:50-06:50

2 stops52h 00m

Sydney Kingsford Smith

Fri 27/11

21:40-23:03

2 stops67h 23m

$3,059

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 12/11

08:50-06:50

2 stops52h 00m

Sydney Kingsford Smith

Sat 28/11

21:40-23:03

2 stops67h 23m

$3,115
Cheapest one-way

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 16/9

12:02-07:30

1 stop27h 28m

$726

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 13/8

07:00-15:55

3 stops40h 55m

$789

Flights are sorted by cheapest return flights first.

Deals found on 15/5

Showing 1-10 of 17 resultsSorted by cheapest first
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?

The best time to book flights from Denver to Sydney is 66 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, August is the cheapest month in which you can book a flight from Denver to Sydney (average of $1,572). Flying from Denver to Sydney in December is currently the most expensive (average of $2,439). 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 17 May 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
1,037 reviews
Check prices

Entertainment

7.2

Crew

8.1

Food

7.0

Boarding

7.7

Comfort

7.4

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Midhat,Apr 2026

AKL - ADL

Poor as usual. Flight was delayed for more than 4 hours. The Staff was rude. Food was terrible. Very unreliable, unprofessional and unpleasant.
Qantas Airways
7.5
Good
1,037 reviews
Qantas Airways
7.5
Good
1,037 reviews
Check prices

Entertainment

7.2

Crew

8.1

Food

7.0

Boarding

7.7

Comfort

7.4

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Midhat,Apr 2026

AKL - ADL

Poor as usual. Flight was delayed for more than 4 hours. The Staff was rude. Food was terrible. Very unreliable, unprofessional and unpleasant.

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.

  • What is the cheapest airline to fly from Denver to Sydney round-trip?

    According to our current data, Qantas Airways ($1,262), offers the cheapest pricing from Denver to Sydney. Qantas Airways is 32% 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, August is the cheapest month in which you can book a flight from Denver to Sydney (average of $1,572). Flying from Denver to Sydney in December is currently the most expensive (average of $2,439). 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
Terrigal
Lithgow
Manly
Cronulla
Bondi Beach
Leura
Randwick
Coogee

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 17 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,262Average$1,913FlexibilityNo 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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