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$512+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Aug 18 — Aug 251
Tue 8/18
Tue 8/25
1 adult, Economy
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Cheap 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 July 19, 2026.

This Trip.com deal was found by Cheapflights users on 7/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:45 am
DEN
-
SYD
2 stops35h 05m
Multiple Airlines
Tue 8/251:15 pm
SYD
-
DEN
2 stops26h 06m
Multiple Airlines
Deal found 7/15$945
This Trip.com deal was found by Cheapflights users on 7/16. 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.
Mon 10/2612:17 pm
DEN
-
SYD
2 stops31h 18m
Multiple Airlines
Thu 11/122:00 pm
SYD
-
DEN
2 stops28h 25m
Multiple Airlines
Deal found 7/16$955
This Trip.com deal was found by Cheapflights users on 7/17. 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.
Mon 8/247:00 am
DEN
-
MEL
2 stops37h 25m
Multiple Airlines
Thu 8/271:30 pm
MEL
-
DEN
2 stops27h 14m
Multiple Airlines
Deal found 7/17$955
This Trip.com deal was found by Cheapflights users on 7/19. 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 8/227:00 am
DEN
-
SYD
2 stops47h 25m
Multiple Airlines
Sat 8/291:15 pm
SYD
-
DEN
2 stops27h 29m
Multiple Airlines
Deal found 7/19$957
This Trip.com deal was found by Cheapflights users on 7/17. 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 8/2510:39 pm
DEN
-
SYD
2 stops45h 11m
Multiple Airlines
Thu 9/31:15 pm
SYD
-
DEN
2 stops27h 29m
Multiple Airlines
Deal found 7/17$975
This Trip.com deal was found by Cheapflights users on 7/17. 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 10/216:30 am
DEN
-
BNE
2 stops36h 05m
Multiple Airlines
Wed 11/411:25 am
BNE
-
DEN
2 stops23h 47m
Multiple Airlines
Deal found 7/17$987
This Trip.com deal was found by Cheapflights users on 7/19. 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 9/57:00 am
DEN
-
SYD
2 stops47h 25m
Multiple Airlines
Fri 9/181:15 pm
SYD
-
DEN
2 stops27h 10m
Multiple Airlines
Deal found 7/19$993
This Trip.com deal was found by Cheapflights users on 7/17. 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 8/237:00 am
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sat 8/291:15 pm
SYD
-
DEN
2 stops27h 29m
Multiple Airlines
Deal found 7/17$1,007
This Trip.com deal was found by Cheapflights users on 7/18. 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 10/216:30 am
DEN
-
BNE
2 stops36h 05m
Multiple Airlines
Sun 11/1511:25 am
BNE
-
DEN
2 stops30h 00m
Multiple Airlines
Deal found 7/18$1,022
This Trip.com deal was found by Cheapflights users on 7/19. 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.
Fri 9/2512:02 pm
DEN
-
SYD
2 stops42h 23m
Multiple Airlines
Thu 10/86:05 am
SYD
-
DEN
2 stops35h 20m
Multiple Airlines
Deal found 7/19$1,024
This Trip.com deal was found by Cheapflights users on 7/18. 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.
Fri 10/166:30 am
DEN
-
BNE
2 stops36h 05m
Multiple Airlines
Mon 11/211:40 am
BNE
-
DEN
2 stops29h 45m
Multiple Airlines
Deal found 7/18$1,049
This Trip.com deal was found by Cheapflights users on 7/17. 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 9/17:25 am
DEN
-
SYD
2 stops36h 25m
Multiple Airlines
Tue 9/86:15 am
SYD
-
DEN
3 stops56h 44m
Multiple Airlines
Deal found 7/17$1,050

Find flight deals from Colorado to Australia

Keep the following information in mind while searching for Colorado to Australia flight deals. Data was last updated July 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$945
(Trip.com)

One-way from

$512
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,256
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. 13% potential increase in price ($221 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 19, 2026.
Use the filters below to find and compare flights from Colorado to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

7:12 pm-7:00 am

1 stop19h 48m

Sydney Kingsford Smith

Mon 8/24

9:30 am-8:26 pm

1 stop26h 56m

$1,236

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

12:03 pm-6:50 am

1 stop26h 47m

Sydney Kingsford Smith

Mon 8/24

9:15 am-8:24 pm

1 stop27h 09m

$1,236

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Wed 10/21

6:30 am-10:35 am

2 stops36h 05m

Brisbane

Wed 11/4

11:25 am-3:52 am

3 stops33h 27m

$1,266

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

9:40 am-6:55 am

1 stop29h 15m

Sydney Kingsford Smith

Sat 8/22

10:20 am-7:52 pm

1 stop25h 32m

$1,287

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 8/29

1:13 pm-7:00 am

2 stops25h 47m

Sydney Kingsford Smith

Sat 9/5

10:20 am-6:47 pm

2 stops24h 27m

$1,291

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Fri 10/16

12:17 pm-10:35 am

2 stops30h 18m

Brisbane

Mon 11/2

7:35 am-12:25 am

3 stops33h 50m

$1,316

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 8/18

6:15 pm-6:50 pm

2 stops32h 35m

Sydney Kingsford Smith

Tue 8/25

8:45 pm-12:20 pm

2 stops31h 35m

$1,346

DenverCoolangatta

DEN - OOL

DENOOL

Denver Intl

Wed 9/2

7:25 am-8:45 pm

2 stops45h 20m

Coolangatta Gold Coast

Wed 9/9

11:25 am-3:52 am

3 stops32h 27m

$1,460

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 8/19

11:55 am-6:55 am

2 stops27h 00m

Sydney Kingsford Smith

Sun 8/23

9:30 am-2:32 pm

2 stops21h 02m

$1,531

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 8/8

5:07 pm-7:00 am

2 stops21h 53m

Sydney Kingsford Smith

Wed 8/12

10:20 am-8:44 pm

2 stops26h 24m

$1,531

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 60 resultsSorted by cheapest first
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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, April is the cheapest month in which you can book a flight from Colorado to Australia (average of $1,136). Flying from Colorado to Australia in December is currently the most expensive (average of $1,846). 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 far ahead should I book a flight from Colorado to Australia?

Booking 36 days in advance of your planned departure date is, on average, the best time to get cheap flights from Colorado to Australia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 $1,236, United Airlines can have you in Australia from Colorado in 19h 48m. The distance from Colorado to Australia is about 8223 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 to fly from Colorado to Australia one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $411. However, be on the lookout for offers from Qantas Airways and United Airlines, as they are both options that can get you from Colorado to Australia for a low price.

  • 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, April is the cheapest month in which you can book a flight from Colorado to Australia (average of $1,136). Flying from Colorado to Australia in December is currently the most expensive (average of $1,846). 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.

Top 7 airlines flying from Colorado to Australia

Discover the top 7 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 July 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$677FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$682Average$737FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$827Average$1,300FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$844Average$1,542FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$849Average$1,399FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$853Average$1,493FlexibilityNo cancel feeOn-time69%
Air New ZealandCheapest$946Average$1,264FlexibilityNo cancel feeOn-time78%

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