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$434+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Denver to Australia

Keep the following information in mind while searching for Denver to Australia flight deals. Data was last updated septiembre 11, 2025.

Round-trip from

$1,002
(Alaska Airlines)

One-way from

$434
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,109
From Denver Intl to Australia
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One-way flight from Denver Intl to Australia
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Highest demand for flights based on searches. 15% potential increase in price ($201 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 septiembre 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/128:02 pmDEN - SYD
2 stops29h 43mAlaska Airlines
dom. 12/149:40 pmSYD - DEN
2 stops32h 04mAlaska Airlines
Deal found 9/10$1,002
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/148:02 pmDEN - SYD
2 stops29h 43mAlaska Airlines
dom. 12/149:40 pmSYD - DEN
2 stops38h 23mAlaska Airlines
Deal found 9/10$1,012
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/216:20 pmDEN - SYD
2 stops32h 25mAlaska Airlines
mar. 10/289:40 pmSYD - DEN
2 stops34h 01mAlaska Airlines
Deal found 9/11$1,013
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/118:02 pmDEN - SYD
2 stops29h 43mAlaska Airlines
dom. 12/149:40 pmSYD - DEN
2 stops38h 23mAlaska Airlines
Deal found 9/10$1,021
This Trip.com deal was found by Cheapflights users on 9/11. 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.
sáb. 11/19:48 amDEN - SYD
2 stops33h 42mMultiple Airlines
lun. 11/102:00 pmSYD - DEN
2 stops23h 00mMultiple Airlines
Deal found 9/11$1,034
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/128:02 pmDEN - SYD
2 stops29h 43mAlaska Airlines
jue. 11/209:40 pmSYD - DEN
1 stop32h 14mAlaska Airlines
Deal found 9/10$1,037
This Trip.com deal was found by Cheapflights users on 9/11. 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.
vie. 9/266:34 pmDEN - SYD
2 stops25h 11mMultiple Airlines
lun. 10/62:15 pmSYD - DEN
2 stops27h 21mMultiple Airlines
Deal found 9/11$1,040
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/131:23 pmDEN - SYD
2 stops36h 22mAlaska Airlines
dom. 12/149:40 pmSYD - DEN
2 stops35h 06mAlaska Airlines
Deal found 9/10$1,043
This Trip.com deal was found by Cheapflights users on 9/11. 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.
mié. 9/2411:15 amDEN - SYD
2 stops32h 30mMultiple Airlines
vie. 10/31:15 pmSYD - DEN
2 stops27h 11mMultiple Airlines
Deal found 9/11$1,047
This Trip.com deal was found by Cheapflights users on 9/10. 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.
sáb. 10/259:58 amDEN - BNE
2 stops29h 47mMultiple Airlines
sáb. 11/19:45 amBNE - DEN
2 stops23h 12mMultiple Airlines
Deal found 9/10$1,087
This Trip.com deal was found by Cheapflights users on 9/10. 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.
mar. 10/710:45 amDEN - MEL
2 stops33h 15mMultiple Airlines
vie. 10/242:30 pmMEL - DEN
2 stops27h 22mMultiple Airlines
Deal found 9/10$1,122
This oojo deal was found by Cheapflights users on 9/10. 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.
dom. 11/29:23 pmDEN - BNE
2 stops43h 32mAir New Zealand
mié. 11/1911:10 amBNE - DEN
2 stops23h 48mAir New Zealand
Deal found 9/10$1,169

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 septiembre 11, 2025.
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

DenverSydney

DEN - SYD

DENSYD

Denver Intl

mié. 9/24

11:15 am-11:45 am

2 stops32h 30m

Sydney Kingsford Smith

vie. 10/3

1:15 pm-12:26 am

2 stops27h 11m

$1,047

DenverSydney

DEN - SYD

DENSYD

Denver Intl

mié. 11/12

3:37 pm-7:45 pm

2 stops34h 08m

Sydney Kingsford Smith

jue. 11/20

9:40 pm-11:54 am

2 stops32h 14m

$1,063

DenverSydney

DEN - SYD

DENSYD

Denver Intl

mié. 10/15

3:02 pm-7:45 pm

2 stops35h 43m

Sydney Kingsford Smith

vie. 10/31

9:40 pm-12:27 pm

2 stops31h 47m

$1,106

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

lun. 2/9

1:52 pm-7:00 am

2 stops24h 08m

Brisbane

lun. 2/23

11:10 am-4:07 pm

2 stops21h 57m

$1,160

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

mié. 3/4

3:45 pm-10:55 am

2 stops25h 40m

Adelaide

mié. 3/18

11:55 am-5:50 pm

2 stops22h 25m

$1,163

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

dom. 11/2

9:23 pm-9:55 am

2 stops43h 32m

Brisbane

mié. 11/19

11:10 am-5:58 pm

2 stops23h 48m

$1,169

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

dom. 10/26

8:03 am-9:55 am

2 stops33h 52m

Brisbane

dom. 11/2

11:10 am-10:55 pm

2 stops27h 45m

$1,214

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

lun. 10/13

6:00 am-7:45 am

2 stops33h 45m

Brisbane

lun. 10/20

11:15 am-7:40 pm

2 stops24h 25m

$1,226

DenverCanberra

DEN - CBR

DENCBR

Denver Intl

lun. 2/9

11:46 am-1:20 pm

2 stops31h 34m

Canberra

lun. 3/2

6:30 am-12:37 pm

2 stops24h 07m

$1,252

DenverCanberra

DEN - CBR

DENCBR

Denver Intl

lun. 2/9

7:05 pm-1:20 pm

2 stops24h 15m

Canberra

mar. 3/3

6:30 am-12:37 pm

2 stops24h 07m

$1,252

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 60 results
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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, February is the cheapest month in which you can book a flight from Denver to Australia (average of $1,035). Flying from Denver to Australia in December is currently the most expensive (average of $1,626). 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.

What is the cheapest time of day to fly from DEN to AU?

Find hourly flight availability from Denver to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Australia as you normally would.

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 septiembre 11, 2025.
Get a feel of what it's like to fly with Delta, 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.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Qantas Airways
7.5
Good
905 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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?

    Alaska Airlines, Air New Zealand, and Air Canada can get you from Denver to Australia in just under 24h 08m. Your travel time can differ by up to 10h. Airlines will cover a distance of 8012 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 Air Canada. According to our data, you can fly for as low as $621. Users have also found prices from $653 and $800 on Fiji Airways and United Airlines, respectively.

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

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

  • 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, February is the cheapest month in which you can book a flight from Denver to Australia (average of $1,035). Flying from Denver to Australia in December is currently the most expensive (average of $1,626). 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

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Alternative routes for Denver to Australia

See prices for flight routes from nearby airports that may be better suited for you.
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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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$645Average$1,243FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$693Average$991FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
DeltaCheapest$786Average$1,338FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$834Average$1,315FlexibilityNo cancel feeOn-time78%
Air CanadaCheapest$962Average$1,293FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$1,159Average$1,283FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,159Average$1,552FlexibilityNo cancel feeOn-time69%

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