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$502+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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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 December 12, 2025.

This Air Canada deal was found by Cheapflights users on 12/9. 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.
Tue 12/307:05 pmDEN - SYD
1 stop20h 30mAir Canada
Tue 1/137:15 pmSYD - DEN
2 stops35h 11mAir Canada
Deal found 12/9$1,443
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:05 pmDEN - SYD
2 stops25h 35mMultiple Airlines
Tue 1/138:30 amSYD - DEN
2 stops21h 56mMultiple Airlines
Deal found 12/11$1,508
This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:05 pmDEN - BNE
1 stop20h 40mAir Canada
Mon 1/2610:45 amBNE - DEN
1 stop18h 52mAir Canada
Deal found 12/11$1,559
This Delta deal was found by Cheapflights users on 12/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:10 pmDEN - SYD
1 stop23h 40mDelta
Tue 1/1310:40 amSYD - DEN
1 stop18h 55mDelta
Deal found 12/9$1,663
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/283:41 pmDEN - SYD
1 stop21h 19mUnited Airlines
Mon 1/1211:20 amSYD - DEN
2 stops26h 52mUnited Airlines
Deal found 12/10$1,667
This Air Canada deal was found by Cheapflights users on 12/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:44 amDEN - SYD
2 stops27h 51mAir Canada
Mon 12/1511:20 amSYD - DEN
2 stops24h 43mAir Canada
Deal found 12/10$1,668
This Delta deal was found by Cheapflights users on 12/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:10 pmDEN - SYD
1 stop25h 20mDelta
Sun 1/1110:40 amSYD - DEN
1 stop30h 31mDelta
Deal found 12/11$1,671
This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:05 pmDEN - SYD
2 stops29h 00mAir Canada
Mon 1/127:15 pmSYD - DEN
2 stops35h 22mAir Canada
Deal found 12/11$1,688
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:10 pmDEN - SYD
1 stop23h 40mDelta
Wed 1/1410:40 amSYD - DEN
1 stop25h 30mDelta
Deal found 12/10$1,713
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/263:55 pmDEN - BNE
2 stops22h 35mUnited Airlines
Mon 1/2611:40 amBNE - DEN
2 stops21h 52mUnited Airlines
Deal found 12/11$1,713
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:51 pmDEN - MEL
1 stop40h 39mMultiple Airlines
Tue 1/68:15 pmMEL - DEN
2 stops55h 32mMultiple Airlines
Deal found 12/10$1,799
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:30 amDEN - MEL
1 stop28h 00mUnited Airlines
Mon 12/2211:30 amMEL - DEN
1 stop24h 49mUnited Airlines
Deal found 12/10$2,057

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 December 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$906
(lol.travel)

One-way from

$502
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,604
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. 21% potential increase in price ($294 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 12, 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

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Mon 1/19

7:05 pm-8:45 am

1 stop20h 40m

Brisbane

Tue 1/27

10:45 am-6:07 pm

2 stops24h 22m

$956

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Sun 4/5

4:11 pm-11:50 am

2 stops28h 09m

Adelaide

Sat 4/18

7:00 pm-12:38 pm

2 stops33h 08m

$995

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 2/1

7:05 pm-3:30 pm

2 stops27h 25m

Brisbane

Tue 2/10

6:35 am-12:37 pm

2 stops23h 02m

$996

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 2/9

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Sat 2/28

11:20 am-12:37 pm

1 stop19h 17m

$997

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 1/18

7:05 pm-8:45 am

1 stop20h 40m

Brisbane

Sun 2/1

10:45 am-5:44 pm

1 stop23h 59m

$1,006

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 3/8

7:05 pm-11:30 am

2 stops24h 25m

Brisbane

Sun 3/22

6:30 pm-12:28 pm

2 stops33h 58m

$1,037

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 1/31

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Thu 2/12

11:20 am-12:28 pm

1 stop19h 08m

$1,039

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 2/7

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Sat 2/14

11:20 am-6:05 pm

2 stops24h 45m

$1,039

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 4/5

7:05 pm-12:00 pm

2 stops24h 55m

Brisbane

Sat 4/18

7:05 pm-12:38 pm

2 stops33h 33m

$1,060

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Thu 3/12

7:05 pm-7:45 am

1 stop20h 40m

Brisbane

Sun 3/22

9:45 am-12:37 pm

1 stop18h 52m

$1,062

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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, March is the cheapest month in which you can book a flight from Denver to Australia (average of $418). Flying from Denver to Australia in July is currently the most expensive (average of $819). 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 December 12, 2025.

One of the essential ways to save on airfare from Denver to Australia is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 24% on airfare.

What is the cheapest day to fly from Denver to Australia?

Use this chart to determine the cheapest time to fly round-trip from Denver to Australia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Denver to Australia flight should consider departing on Saturday at noon when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 12, 2025.
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
552 reviews

Food

7.4

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
Air New Zealand
8.0
Very good
552 reviews
Air New Zealand
8.0
Very good
552 reviews

Food

7.4

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
Qantas Airways
7.5
Good
947 reviews
Air New Zealand
8.0
Very good
552 reviews

Food

7.4

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
United Airlines
7.4
Good
9,095 reviews
Air New Zealand
8.0
Very good
552 reviews

Food

7.4

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
American Airlines
7.2
Good
11,050 reviews
Air New Zealand
8.0
Very good
552 reviews

Food

7.4

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
Air Canada
7.1
Good
10,516 reviews
Air New Zealand
8.0
Very good
552 reviews

Food

7.4

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess

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, American Airlines, and United Airlines can get you from Denver to Australia in just under 19h 50m. Your travel time can differ by up to 7h. 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 Alaska Airlines. According to our data, you can fly for as low as $331. Users have also found prices from $353 and $366 on American Airlines and Qantas Airways, 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 $418). Flying from Denver to Australia in July is currently the most expensive (average of $819). 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$709Average$978FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$765Average$1,234FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$770Average$1,287FlexibilityNo cancel feeOn-time67%
DeltaCheapest$786Average$1,382FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$791Average$1,319FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$834Average$1,302FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$853Average$1,505FlexibilityNo cancel feeOn-time69%

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