HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Australia

$397+ Cheap flights from Denver (DEN) to Australia

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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Australia 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 Australia

Cheapest flights from Denver to Australia
Explore the most affordable flight options available from Denver to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This Trip.com deal was found by Cheapflights users on 1/24. 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 3/79:00 am
DEN
-
SYD
2 stops33h 35m
Multiple Airlines
Mon 3/166:00 am
SYD
-
DEN
2 stops35h 30m
Multiple Airlines
Deal found 1/24$887
This Trip.com deal was found by Cheapflights users on 1/25. 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.
Wed 3/116:11 pm
DEN
-
MEL
2 stops25h 14m
Multiple Airlines
Wed 3/181:45 pm
MEL
-
DEN
2 stops27h 52m
Multiple Airlines
Deal found 1/25$918
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 2/259:31 pm
DEN
-
BNE
1 stop38h 29m
Multiple Airlines
Mon 3/911:50 am
BNE
-
DEN
2 stops37h 54m
Multiple Airlines
Deal found 1/26$931
This Kiwi.com deal was found by Cheapflights users on 1/24. 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 2/1711:30 am
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Sat 3/72:00 pm
SYD
-
DEN
2 stops28h 30m
Multiple Airlines
Deal found 1/24$948
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 2/259:31 pm
DEN
-
MEL
1 stop41h 59m
Multiple Airlines
Wed 3/41:45 pm
MEL
-
DEN
2 stops40h 43m
Multiple Airlines
Deal found 1/26$948
This Air Canada deal was found by Cheapflights users on 1/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:05 pm
DEN
-
BNE
1 stop20h 00m
Air Canada
Mon 5/410:00 am
BNE
-
DEN
1 stop23h 00m
Air Canada
Deal found 1/25$949
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
Sun 3/810:29 pm
DEN
-
MEL
1 stop42h 01m
Multiple Airlines
Tue 3/241:45 pm
MEL
-
DEN
2 stops36h 59m
Multiple Airlines
Deal found 1/26$952
This Kiwi.com deal was found by Cheapflights users on 1/23. 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 4/89:10 am
DEN
-
SYD
1 stop30h 20m
Multiple Airlines
Wed 4/291:10 pm
SYD
-
DEN
2 stops22h 39m
Multiple Airlines
Deal found 1/23$954
This Kiwi.com deal was found by Cheapflights users on 1/24. 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 3/49:31 pm
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Sat 3/142:00 pm
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 1/24$955
This Kiwi.com deal was found by Cheapflights users on 1/24. 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.
Mon 2/166:00 am
DEN
-
SYD
1 stop31h 25m
Multiple Airlines
Tue 3/102:00 pm
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 1/24$957
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 2/259:31 pm
DEN
-
BNE
1 stop38h 29m
Multiple Airlines
Thu 3/1211:50 am
BNE
-
DEN
2 stops28h 40m
Multiple Airlines
Deal found 1/26$959
This Kiwi.com deal was found by Cheapflights users on 1/23. 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 2/1711:30 am
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Wed 3/182:00 pm
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 1/23$962

Find flight deals from Denver to Australia

Keep the following information in mind while searching for Denver to Australia flight deals. Data was last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$887
(Trip.com)

One-way from

$397
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$1,293
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 Australia
Search Deals
One-way flight from Denver Intl to Australia
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($279 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

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Australia 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 26, 2026.
Use the filters below to find and compare flights from Denver to Australia that are best for you.

Fly from

Denver

Fly to

Australia

Route

Depart

Return

Price

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Wed 3/11

10:29 pm-9:30 am

1 stop42h 01m

Melbourne

Wed 3/18

1:45 pm-12:30 am

2 stops27h 45m

$946

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Mon 4/27

11:20 am-7:05 am

2 stops27h 45m

Brisbane

Mon 5/4

10:00 am-6:07 pm

2 stops24h 07m

$960

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Mon 4/6

7:05 pm-7:05 am

1 stop20h 00m

Brisbane

Mon 4/20

10:00 am-12:38 pm

1 stop18h 38m

$1,013

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 4/5

7:05 pm-7:05 am

1 stop20h 00m

Brisbane

Sat 4/18

8:40 pm-12:38 pm

2 stops31h 58m

$1,043

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Fri 5/8

7:50 pm-1:55 pm

2 stops26h 35m

Adelaide

Sat 5/16

6:55 pm-6:12 pm

2 stops38h 47m

$1,043

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Sat 5/9

7:50 pm-11:50 am

2 stops24h 30m

Adelaide

Sat 5/16

6:55 pm-5:00 pm

2 stops37h 35m

$1,043

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Wed 2/25

11:19 am-8:45 am

2 stops28h 26m

Brisbane

Sun 3/8

10:45 am-7:55 am

2 stops38h 10m

$1,050

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 2/22

7:05 pm-8:45 am

1 stop20h 40m

Brisbane

Thu 4/9

10:00 am-12:38 pm

1 stop18h 38m

$1,055

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Fri 5/8

11:35 am-1:55 pm

3 stops34h 50m

Adelaide

Sat 5/16

6:55 pm-6:12 pm

2 stops38h 47m

$1,056

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Sun 4/5

7:05 pm-11:50 am

2 stops25h 15m

Adelaide

Sat 4/18

7:00 pm-12:38 pm

2 stops33h 08m

$1,062

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Denver to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia 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 Australia

What is the cheapest month to book a flight from Denver to Australia?

Currently, March is the cheapest month in which you can book a flight from Denver to Australia (average of $417). Flying from Denver to Australia in December is currently the most expensive (average of $827). 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 Australia

Get insights into the airlines that provide service to Australia. 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 Australia. Reviews last updated January 26, 2026.
Get a feel of what it's like to fly with Air New Zealand, Qantas Airways, and United Airlines from Denver to Australia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very good
574 reviews

Crew

8.5

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air New Zealand
8.0
Very good
574 reviews
Air New Zealand
8.0
Very good
574 reviews

Crew

8.5

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Qantas Airways
7.5
Good
977 reviews
Air New Zealand
8.0
Very good
574 reviews

Crew

8.5

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
United Airlines
7.4
Good
9,200 reviews
Air New Zealand
8.0
Very good
574 reviews

Crew

8.5

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
American Airlines
7.2
Good
11,189 reviews
Air New Zealand
8.0
Very good
574 reviews

Crew

8.5

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air Canada
7.1
Good
10,656 reviews
Air New Zealand
8.0
Very good
574 reviews

Crew

8.5

Boarding

8.2

Food

7.4

Entertainment

7.4

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane

Related info for your journey

Find useful and relevant information for your journey from Denver to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to Australia?

    If you book a flight to Australia from Denver, you will be flying from Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver.

  • How long is the flight from Denver to Australia?

    Air Canada, ANA, and Qantas Airways can get you from Denver to Australia in just under 20h 46m. Your travel time can differ by up to 17h. Airlines will cover a distance of 8781 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $353. Users have also found prices from $373 and $384 on Qantas Airways and Alaska Airlines, respectively.

  • What are the most popular routes from Denver to Australia?

    The most popular flight routes from Denver to Australia are Denver Intl - Sydney Kingsford Smith, Denver Intl - Melbourne and Denver Intl - Brisbane.

  • Can I find deals for flights from Denver to Australia that include hotel bookings?

    Yes. In addition to deals on Denver to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Australia.

  • Can I find deals for business class flights from Denver to Australia?

    Yes. Cheapflights offers flight deals from Denver to Australia 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 Australia?

    Currently, March is the cheapest month in which you can book a flight from Denver to Australia (average of $417). Flying from Denver to Australia in December is currently the most expensive (average of $827). 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

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 Australia

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Auckland flights
Denver to Sydney flights
Denver to Melbourne flights
Denver to Christchurch flights
Denver to Brisbane flights
Denver to Papeete flights
Denver to Nadi flights
Denver to Tamuning flights
Denver to Wellington flights
Denver to Avalon flights
Denver to Vaitape flights
Denver to Perth flights
Denver to Queenstown flights
Denver to I Fadang flights
Denver to Blenheim flights
Denver to Nelson flights
Denver to Adelaide flights
Denver to Cairns flights
Denver to Darwin flights
Denver to Coolangatta flights
Denver to Rarotonga flights
Denver to New Plymouth flights
Denver to Honiara flights
Denver to Canberra flights
Colorado Springs to Melbourne flights
Aspen to Queenstown flights
Denver to Dunedin flights
Denver to Tontouta flights
Denver to Hobart flights
Grand Junction to Papeete flights
Denver to Townsville flights
Denver to Port Vila flights
Denver to Suva flights
Aspen to Auckland flights
Denver to Koror flights
Denver to Port Moresby flights
Colorado Springs to Sydney flights
Colorado Springs to Nadi flights
Aspen to Sydney flights
Denver to Tauranga flights
Denver to Temae flights
Denver to Apia flights

Top 8 airlines flying from Denver to Australia

Discover the top 8 airlines that operate flights from Denver to Australia. 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 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$157Average$1,204FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$684Average$1,287FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$765Average$1,274FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$803Average$882FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$827Average$1,273FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$834Average$1,292FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$853Average$1,481FlexibilityNo cancel feeOn-time69%

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.