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$410+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Apr 24 — May 11
Fri 4/24
Fri 5/1
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 March 25, 2026.

This Trip.com deal was found by Cheapflights users on 3/23. 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 5/77:00 am
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Thu 5/146:00 am
SYD
-
DEN
2 stops34h 38m
Multiple Airlines
Deal found 3/23$875
This Trip.com deal was found by Cheapflights users on 3/24. 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 5/46:00 am
DEN
-
SYD
2 stops48h 10m
Multiple Airlines
Fri 5/86:00 am
SYD
-
DEN
2 stops34h 38m
Multiple Airlines
Deal found 3/24$883
This Trip.com deal was found by Cheapflights users on 3/23. 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 4/221:40 pm
DEN
-
SYD
2 stops30h 10m
Multiple Airlines
Wed 4/291:20 pm
SYD
-
DEN
2 stops22h 29m
Multiple Airlines
Deal found 3/23$893
This Trip.com deal was found by Cheapflights users on 3/23. 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 5/137:20 am
DEN
-
BNE
2 stops35h 15m
Multiple Airlines
Wed 5/2711:35 am
BNE
-
DEN
2 stops24h 31m
Multiple Airlines
Deal found 3/23$895
This Trip.com deal was found by Cheapflights users on 3/24. 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 5/117:00 am
DEN
-
BNE
2 stops35h 35m
Multiple Airlines
Wed 5/2711:35 am
BNE
-
DEN
2 stops24h 31m
Multiple Airlines
Deal found 3/24$915
This Trip.com deal was found by Cheapflights users on 3/23. 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 4/139:20 am
DEN
-
SYD
2 stops44h 50m
Multiple Airlines
Mon 5/251:15 pm
SYD
-
DEN
2 stops27h 23m
Multiple Airlines
Deal found 3/23$928
This Trip.com deal was found by Cheapflights users on 3/24. 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 5/117:00 am
DEN
-
BNE
2 stops35h 35m
Multiple Airlines
Sun 5/2411:35 am
BNE
-
DEN
2 stops24h 31m
Multiple Airlines
Deal found 3/24$929
This Justfly.com deal was found by Cheapflights users on 3/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1311:20 am
DEN
-
BNE
2 stops27h 45m
Air Canada
Wed 5/2710:00 am
BNE
-
DEN
2 stops38h 45m
Air Canada
Deal found 3/25$942
This Trip.com deal was found by Cheapflights users on 3/25. 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 5/237:00 am
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Fri 6/51:15 pm
SYD
-
DEN
2 stops27h 23m
Multiple Airlines
Deal found 3/25$943
This lol.travel deal was found by Cheapflights users on 3/21. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1911:20 am
DEN
-
BNE
2 stops27h 45m
Air Canada
Tue 5/510:00 am
BNE
-
DEN
2 stops22h 03m
Air Canada
Deal found 3/21$949
This Trip.com deal was found by Cheapflights users on 3/24. 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 5/97:20 am
DEN
-
MEL
2 stops36h 40m
Multiple Airlines
Sun 5/171:30 pm
MEL
-
DEN
2 stops27h 08m
Multiple Airlines
Deal found 3/24$960
This Trip.com deal was found by Cheapflights users on 3/22. 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 5/227:00 am
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sun 5/316:00 am
SYD
-
DEN
2 stops34h 38m
Multiple Airlines
Deal found 3/22$965

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 March 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$875
(Trip.com)

One-way from

$410
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$1,221
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. 10% potential increase in price ($157 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 25, 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

Wed 5/13

9:10 am-7:05 am

1 stop29h 55m

Brisbane

Fri 5/22

10:00 am-8:45 am

2 stops38h 45m

$981

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 6/14

7:50 pm-7:05 am

1 stop19h 15m

Brisbane

Thu 7/2

10:15 am-5:13 pm

1 stop22h 58m

$995

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Thu 5/7

7:50 pm-3:55 pm

2 stops28h 35m

Adelaide

Thu 5/14

8:00 pm-5:00 pm

2 stops36h 30m

$1,086

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Fri 5/15

7:50 pm-7:05 am

1 stop19h 15m

Brisbane

Fri 6/12

10:00 am-6:02 pm

2 stops24h 02m

$1,098

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sat 5/9

7:16 pm-7:05 am

2 stops43h 49m

Brisbane

Wed 5/13

10:00 am-8:50 am

2 stops38h 50m

$1,110

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 5/3

6:00 am-7:30 am

1 stop33h 30m

Sydney Kingsford Smith

Tue 5/12

5:50 pm-6:33 am

2 stops28h 43m

$1,216

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Thu 5/14

6:10 pm-3:55 pm

3 stops54h 15m

Adelaide

Mon 5/18

8:00 pm-11:10 pm

2 stops42h 40m

$1,244

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 6/7

7:50 pm-7:05 am

1 stop19h 15m

Brisbane

Sat 6/20

7:25 pm-12:35 pm

2 stops33h 10m

$1,248

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Wed 5/6

11:19 am-7:05 am

2 stops27h 46m

Brisbane

Sun 5/10

10:00 am-6:07 pm

2 stops24h 07m

$1,342

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Sun 5/10

7:00 am-12:25 pm

2 stops37h 25m

Melbourne

Tue 5/19

9:45 am-10:04 am

1 stop40h 19m

$1,350

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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, July is the cheapest month in which you can book a flight from Colorado to Australia (average of $168). Flying from Colorado to Australia in April is currently the most expensive (average of $824). 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.

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 $1,403, Air Canada can have you in Australia from Colorado in 23h 53m. The distance from Colorado to Australia is about 8320 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 Qantas Airways, with whom users have recently found tickets for as low as $424. However, be on the lookout for offers from United Airlines and Delta, 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, July is the cheapest month in which you can book a flight from Colorado to Australia (average of $168). Flying from Colorado to Australia in April is currently the most expensive (average of $824). 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 March 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$1,203FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$682Average$1,061FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$745Average$958FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$800Average$1,557FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$827Average$1,250FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$853Average$1,472FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$874Average$1,324FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$946Average$1,287FlexibilityNo cancel feeOn-time78%

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