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$409+ Cheap flights from Colorado 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
Dec 30 — Jan 61
Tue 12/30
Tue 1/6
1 adult, Economy
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Find flight deals from Colorado to Australia

Cheapest flights from Colorado to Australia
Explore the most affordable flight options available from Colorado to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 30, 2025.

This flugladen.de deal was found by Cheapflights users on 11/27. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:01 pmDEN - SYD
1 stop21h 59mMultiple Airlines
Mon 3/911:20 amSYD - DEN
1 stop30h 20mMultiple Airlines
Deal found 11/27$1,010
This Trip.com deal was found by Cheapflights users on 11/27. 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 12/316:00 amDEN - SYD
1 stop31h 25mMultiple Airlines
Wed 1/145:45 pmSYD - DEN
2 stops28h 11mMultiple Airlines
Deal found 11/27$1,039
This Trip.com deal was found by Cheapflights users on 11/29. 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.
Tue 12/25:01 pmDEN - SYD
2 stops25h 34mMultiple Airlines
Mon 12/82:00 pmSYD - DEN
2 stops28h 17mMultiple Airlines
Deal found 11/29$1,043
This Trip.com deal was found by Cheapflights users on 11/28. 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 12/46:00 amDEN - SYD
2 stops31h 25mMultiple Airlines
Wed 12/105:45 pmSYD - DEN
2 stops22h 44mMultiple Airlines
Deal found 11/28$1,126
This Kiwi.com deal was found by Cheapflights users on 11/28. 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.
Fri 12/56:00 amDEN - SYD
1 stop31h 25mMultiple Airlines
Fri 12/125:45 pmSYD - DEN
1 stop24h 32mMultiple Airlines
Deal found 11/28$1,127
This Priceline deal was found by Cheapflights users on 11/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:44 amDEN - BNE
2 stops28h 01mAir Canada
Mon 12/2210:45 amBNE - DEN
1 stop18h 52mAir Canada
Deal found 11/28$1,193
This Kiwi.com deal was found by Cheapflights users on 11/28. 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 12/18:31 amDEN - BNE
1 stop27h 29mMultiple Airlines
Mon 12/87:40 pmBNE - DEN
1 stop21h 37mMultiple Airlines
Deal found 11/28$1,249
This Air Canada deal was found by Cheapflights users on 11/28. 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 12/111:44 amDEN - BNE
2 stops28h 01mAir Canada
Mon 12/810:45 amBNE - DEN
2 stops24h 18mAir Canada
Deal found 11/28$1,454
This Air Canada deal was found by Cheapflights users on 11/28. 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 12/27:05 pmDEN - CNS
2 stops29h 10mMultiple Airlines
Thu 12/116:00 amCNS - DEN
2 stops23h 37mMultiple Airlines
Deal found 11/28$1,494
This oojo deal was found by Cheapflights users on 11/29. 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 12/44:40 pmDEN - MEL
2 stops32h 05mMultiple Airlines
Thu 12/117:00 amMEL - DEN
2 stops29h 44mMultiple Airlines
Deal found 11/29$1,505
This Air Canada deal was found by Cheapflights users on 11/28. 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 12/17:05 pmDEN - CBR
2 stops27h 55mMultiple Airlines
Tue 12/96:30 amCBR - DEN
2 stops27h 56mMultiple Airlines
Deal found 11/28$1,508
This Expedia deal was found by Cheapflights users on 11/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:05 pmDEN - CNS
2 stops44h 30mMultiple Airlines
Wed 1/145:35 pmCNS - DEN
2 stops42h 54mMultiple Airlines
Deal found 11/28$1,537

Cheap flight deals from Colorado to Australia

Keep the following information in mind while searching for Colorado to Australia flight deals. Data was last updated November 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$892
(Trip.com)

One-way from

$409
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,265
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 Colorado to Australia
Search Deals
One-way flight from Colorado to Australia
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($199 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado 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 November 30, 2025.
Use the filters below to find and compare flights from Colorado to Australia that are best for you.

Fly from

Colorado

Fly to

Australia

Route

Depart

Return

Price

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Mon 3/16

7:05 pm-1:15 pm

2 stops25h 10m

Melbourne

Fri 3/20

6:40 am-7:28 pm

2 stops29h 48m

$1,025

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Tue 2/3

9:44 pm-10:25 am

2 stops43h 41m

Brisbane

Tue 3/24

7:40 pm-12:40 am

1 stop21h 00m

$1,038

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Tue 2/3

11:42 am-8:45 am

2 stops28h 03m

Brisbane

Tue 3/24

5:05 am-12:37 pm

2 stops23h 32m

$1,040

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 1/31

7:05 pm-4:40 pm

2 stops27h 35m

Sydney Kingsford Smith

Thu 2/12

11:20 am-12:28 pm

1 stop19h 08m

$1,056

DenverMelbourne

DEN - AVV

DENAVV

Denver Intl

Tue 2/3

7:05 pm-3:50 pm

2 stops26h 45m

Melbourne Avalon

Tue 2/10

6:00 am-12:26 pm

2 stops24h 26m

$1,058

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Tue 1/20

7:05 pm-8:45 am

1 stop20h 40m

Brisbane

Thu 1/29

10:45 am-6:07 pm

2 stops24h 22m

$1,058

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Mon 1/19

8:05 am-8:45 am

1 stop31h 40m

Brisbane

Tue 1/27

10:45 am-5:44 pm

1 stop23h 59m

$1,122

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Tue 1/13

8:05 am-8:45 am

1 stop31h 40m

Brisbane

Tue 1/20

10:45 am-12:37 pm

1 stop18h 52m

$1,122

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Wed 3/11

7:44 pm-9:30 am

1 stop20h 46m

Melbourne

Wed 4/1

9:45 am-12:43 pm

1 stop19h 58m

$1,130

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Tue 2/17

7:05 pm-6:10 pm

2 stops29h 35m

Adelaide

Sat 2/21

6:10 am-7:28 pm

2 stops30h 48m

$1,130

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/28

Showing 1-10 of 60 results
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Best time to book a flight from Colorado to Australia

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

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

Currently, March is the cheapest month in which you can book a flight from Colorado to Australia (average of $420). Flying from Colorado 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 CO to AU?

Find hourly flight availability from Colorado 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 November 30, 2025.

It’s typically best to fly out from Colorado to Australia at noon. Doing so could potentially save you 32% on the flight price compared to flying in the morning, which is usually more expensive.

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

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

Travelers seeking maximum savings on their Colorado 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.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Australia. 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 Colorado to Australia?

    For as low as $1,130, Air Canada can have you in Australia from Colorado in 20h 46m. The distance from Colorado to Australia is about 8781 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Colorado to Australia (average of $420). Flying from Colorado 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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Top 8 airlines flying from Colorado to Australia

Discover the top 8 airlines that operate flights from Colorado 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 November 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$645Average$1,271FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$693Average$995FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
DeltaCheapest$786Average$1,379FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$791Average$1,319FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$827Average$1,291FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$834Average$1,302FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$853Average$1,531FlexibilityNo cancel feeOn-time69%

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