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$408+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Jul 21 — Jul 281
Tue 7/21
Tue 7/28
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 June 21, 2026.

This Trip.com deal was found by Cheapflights users on 6/17. 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 8/47:25 am
DEN
-
MEL
2 stops36h 35m
Multiple Airlines
Thu 8/201:30 pm
MEL
-
DEN
2 stops27h 16m
Multiple Airlines
Deal found 6/17$888
This Trip.com deal was found by Cheapflights users on 6/16. 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.
Sat 9/269:15 am
DEN
-
MEL
2 stops34h 50m
Multiple Airlines
Fri 10/92:30 pm
MEL
-
DEN
2 stops26h 55m
Multiple Airlines
Deal found 6/16$914
This Trip.com deal was found by Cheapflights users on 6/18. 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.
Sun 8/23:20 pm
DEN
-
SYD
2 stops28h 30m
Multiple Airlines
Sun 8/92:10 pm
SYD
-
DEN
2 stops26h 32m
Multiple Airlines
Deal found 6/18$959
This Trip.com deal was found by Cheapflights users on 6/16. 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.
Fri 7/317:00 am
DEN
-
MEL
2 stops37h 00m
Multiple Airlines
Fri 8/71:30 pm
MEL
-
DEN
2 stops24h 50m
Multiple Airlines
Deal found 6/16$1,014
This Trip.com deal was found by Cheapflights users on 6/16. 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.
Fri 7/317:00 am
DEN
-
BNE
2 stops35h 35m
Multiple Airlines
Fri 8/711:35 am
BNE
-
DEN
2 stops26h 45m
Multiple Airlines
Deal found 6/16$1,045
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/310:29 pm
DEN
-
SYD
2 stops44h 06m
Multiple Airlines
Fri 11/1311:15 am
SYD
-
DEN
1 stop40h 40m
Multiple Airlines
Deal found 6/18$1,104
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:29 pm
DEN
-
SYD
2 stops44h 06m
Multiple Airlines
Tue 11/1011:15 am
SYD
-
DEN
1 stop24h 57m
Multiple Airlines
Deal found 6/17$1,107
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:02 pm
DEN
-
SYD
2 stops31h 48m
Multiple Airlines
Tue 10/136:50 pm
SYD
-
DEN
1 stop31h 50m
Multiple Airlines
Deal found 6/17$1,112
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 8/97:00 am
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sun 8/235:50 pm
SYD
-
DEN
1 stop22h 56m
Multiple Airlines
Deal found 6/20$1,115
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/63:20 pm
DEN
-
SYD
2 stops28h 30m
Multiple Airlines
Fri 8/145:50 pm
SYD
-
DEN
1 stop32h 13m
Multiple Airlines
Deal found 6/19$1,119
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/212:02 pm
DEN
-
SYD
2 stops30h 33m
Multiple Airlines
Fri 11/1311:15 am
SYD
-
DEN
1 stop40h 40m
Multiple Airlines
Deal found 6/18$1,122
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:29 pm
DEN
-
SYD
2 stops44h 06m
Multiple Airlines
Thu 11/1211:15 am
SYD
-
DEN
1 stop31h 10m
Multiple Airlines
Deal found 6/18$1,124

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 June 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$888
(Trip.com)

One-way from

$408
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$1,369
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. 15% potential increase in price ($233 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 21, 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

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Fri 7/31

9:15 am-10:35 am

3 stops33h 20m

Brisbane

Fri 8/7

11:35 am-10:20 pm

2 stops26h 45m

$1,079

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 8/5

1:30 pm-7:00 am

2 stops25h 30m

Sydney Kingsford Smith

Wed 8/12

10:20 am-6:47 pm

2 stops24h 27m

$1,192

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

12:03 pm-6:50 am

1 stop26h 47m

Sydney Kingsford Smith

Sat 8/22

9:15 am-7:12 pm

1 stop25h 57m

$1,288

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 9/9

3:09 pm-6:55 am

2 stops23h 46m

Sydney Kingsford Smith

Fri 9/18

9:30 am-6:47 pm

2 stops25h 17m

$1,363

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

7:12 pm-7:00 am

1 stop19h 48m

Sydney Kingsford Smith

Sat 8/22

10:20 am-9:53 pm

2 stops27h 33m

$1,397

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Thu 11/19

7:30 am-7:00 am

1 stop29h 30m

Sydney Kingsford Smith

Fri 11/27

11:20 am-2:40 pm

2 stops21h 20m

$1,413

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Wed 8/5

7:15 pm-7:00 am

1 stop19h 45m

Sydney Kingsford Smith

Sun 8/9

10:20 am-7:55 pm

1 stop25h 35m

$1,424

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Mon 8/10

3:43 pm-7:30 am

1 stop23h 47m

Melbourne

Tue 8/25

8:35 am-10:18 pm

2 stops29h 43m

$1,451

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Thu 6/25

10:39 pm-5:00 am

1 stop38h 21m

Brisbane

Tue 7/7

2:25 pm-11:22 pm

2 stops24h 57m

$1,458

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Mon 9/7

9:10 pm-10:55 am

2 stops45h 45m

Melbourne

Sun 9/13

8:35 am-7:45 pm

2 stops27h 10m

$1,476

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/19

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, January is the cheapest month in which you can book a flight from Colorado to Australia (average of $72). Flying from Colorado to Australia in December is currently the most expensive (average of $816). 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 33 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 $1,451, United Airlines can have you in Australia from Colorado in 23h 47m. 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.

  • 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, January is the cheapest month in which you can book a flight from Colorado to Australia (average of $72). Flying from Colorado to Australia in December is currently the most expensive (average of $816). 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 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 June 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$1,203FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$682Average$761FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$745Average$924FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$770Average$1,262FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$800Average$1,384FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$844Average$1,081FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$853Average$1,484FlexibilityNo cancel feeOn-time69%
Air New ZealandCheapest$946Average$1,280FlexibilityNo cancel feeOn-time78%

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