HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sydney

$442+ Cheap flights from Denver (DEN) to Sydney (SYD)

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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Sydney with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 January 15, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$840
(Trip.com)

One-way from

$442
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,291
Provider with most accurate pricing for Denver Intl-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Sydney Kingsford Smith flights.
Search Deals
From Denver Intl to Sydney Kingsford Smith
Search Deals
One-way flight from Denver Intl to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($284 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Denver to Sydney

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 January 15, 2026.

This Trip.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2811:50 am
DEN
-
SYD
2 stops30h 45m
Multiple Airlines
Sat 3/76:00 am
SYD
-
DEN
2 stops36h 30m
Multiple Airlines
Deal found 1/14$840
This Trip.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:00 am
DEN
-
SYD
2 stops36h 35m
Multiple Airlines
Sun 3/86:00 am
SYD
-
DEN
2 stops35h 30m
Multiple Airlines
Deal found 1/14$915
This Trip.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/511:00 am
DEN
-
SYD
1 stop28h 00m
Multiple Airlines
Sun 2/157:05 am
SYD
-
DEN
2 stops28h 26m
Multiple Airlines
Deal found 1/14$987
This oojo deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1212:59 pm
DEN
-
SYD
1 stop26h 01m
Qantas Airways
Thu 2/197:05 am
SYD
-
DEN
2 stops23h 24m
Qantas Airways
Deal found 1/13$1,082
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/109:31 pm
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Fri 2/202:00 pm
SYD
-
DEN
2 stops38h 02m
Multiple Airlines
Deal found 1/14$1,108
This Kiwi.com deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/189:31 pm
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Tue 3/176:20 am
SYD
-
DEN
2 stops35h 10m
Multiple Airlines
Deal found 1/15$1,111
This oojo deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/117:23 pm
DEN
-
SYD
1 stop19h 37m
Qantas Airways
Wed 2/187:05 am
SYD
-
DEN
2 stops30h 09m
Qantas Airways
Deal found 1/14$1,118
This oojo deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:47 pm
DEN
-
SYD
2 stops21h 58m
Air New Zealand
Tue 3/2411:45 am
SYD
-
DEN
2 stops23h 37m
Air New Zealand
Deal found 1/14$1,119
This oojo deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:54 pm
DEN
-
SYD
2 stops24h 36m
Air New Zealand
Tue 3/109:55 am
SYD
-
DEN
2 stops25h 27m
Air New Zealand
Deal found 1/14$1,120
This oojo deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:50 pm
DEN
-
SYD
2 stops24h 50m
Air New Zealand
Tue 9/1511:55 am
SYD
-
DEN
2 stops23h 35m
Air New Zealand
Deal found 1/14$1,122
This Kiwi.com deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/189:31 pm
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Mon 3/1610:15 am
SYD
-
DEN
2 stops40h 29m
Multiple Airlines
Deal found 1/15$1,124

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated January 15, 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

Sat 4/11

9:00 pm-10:40 am

2 stops45h 40m

Sydney Kingsford Smith

Mon 4/20

11:55 am-7:40 pm

2 stops23h 45m

$1,129

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 4/5

5:42 pm-8:45 am

2 stops23h 03m

Sydney Kingsford Smith

Sat 4/18

7:20 pm-10:15 pm

2 stops42h 55m

$1,142

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 3/9

7:05 pm-8:35 am

1 stop20h 30m

Sydney Kingsford Smith

Mon 3/16

10:25 am-12:37 pm

1 stop19h 12m

$1,205

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 4/11

4:34 pm-8:45 am

2 stops24h 11m

Sydney Kingsford Smith

Sun 4/19

9:55 am-10:15 pm

2 stops28h 20m

$1,237

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 4/9

5:42 pm-8:45 am

2 stops23h 03m

Sydney Kingsford Smith

Sun 4/19

9:55 am-11:57 pm

2 stops30h 02m

$1,237

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 4/9

3:55 pm-10:40 am

2 stops26h 45m

Sydney Kingsford Smith

Wed 4/22

11:55 am-7:40 pm

2 stops23h 45m

$1,237

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 2/17

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Sat 2/28

11:20 am-12:37 pm

1 stop19h 17m

$1,248

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 4/12

7:05 pm-7:20 am

1 stop20h 15m

Sydney Kingsford Smith

Mon 4/20

7:00 am-12:33 pm

2 stops21h 33m

$1,249

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 2/9

11:42 am-9:35 am

2 stops27h 53m

Sydney Kingsford Smith

Sat 2/28

11:20 am-6:05 pm

2 stops24h 45m

$1,259

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 4/12

8:11 pm-7:00 am

1 stop18h 49m

Sydney Kingsford Smith

Wed 4/22

11:55 am-7:40 pm

2 stops23h 45m

$1,266

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 17 results
1
2

Compare providers for flights from Denver to Sydney

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Sydney in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Sydney flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Denver-Sydney flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Denver-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Sydney flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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 round-trip flight from Denver to Sydney. Price data was last updated on January 9, 2026.

The price you pay for your flight from Denver to Sydney may vary depending on when you book. For the best chance of a lower fare, look to book 41 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 $658). Flying from Denver to Sydney in January is currently the most expensive (average of $853). 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 to fly round-trip 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 January 15, 2026.
Read through reviews of airlines operating flights from Denver to Sydney, such as Delta, Qantas Airways, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,051 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Qantas Airways
7.5
Good
971 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,164 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,136 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,624 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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?

    For as low as $1,205, Air New Zealand can have you in Sydney from Denver in 20h 30m. The distance between Denver and Sydney is about 8348 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Denver to Sydney round-trip?

    Currently priced at $277, Delta will fly you from Denver to Sydney and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Fiji Airways and Alaska Airlines - these airlines can fly you to your destination from $684 and $745, respectively. These flights start at 75% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Denver to Sydney one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $384. However, be on the lookout for offers from Qantas Airways and American Airlines, as they are both options that can get you from Denver to Sydney for a low price.

  • Where are the most common layover locations when flying from Denver to Sydney?

    Most of the time, Denver to Sydney flights that have layovers will stop in Los Angeles.

  • What are some popular things to do or see while on a layover in Los Angeles?

    Hollywood Bowl, Hollywood Walk of Fame, and Little Tokyo are the most popular attractions in Los Angeles if you're in need of something to do during your layover. Hollywood Bowl, Hollywood Walk of Fame, and Little Tokyo are located about 12.5 mi, 11.7 mi, and 12.1 mi, respectively from Los Angeles. Travelers in need of a car in Los Angeles can rent one for about $40 per day.

  • Where are the least popular layover locations for Denver to Sydney flights?

    Flights departing from Denver and landing in Sydney layover in Vancouver least frequently.

  • 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 vacation 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 $658). Flying from Denver to Sydney in January is currently the most expensive (average of $853). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
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.

Alternative routes for Denver to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Coolangatta flights
Aspen to Sydney flights
Colorado Springs to Sydney flights

Top 8 airlines flying from Denver to Sydney

Discover the top 8 airlines 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 2,558,603 searches. Data last updated January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$277Average$1,367FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$684Average$1,356FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$800Average$906FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$825Average$856FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$834Average$1,266FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$853Average$1,459FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$955Average$1,271FlexibilityNo cancel feeOn-time67%

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.