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$397+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Mar 28 — Apr 41
Sat 3/28
Sat 4/4
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 February 26, 2026.

This Gurufare deal was found by Cheapflights users on 2/25. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:30 pm
DEN
-
BNE
2 stops45h 35m
Multiple Airlines
Wed 5/1310:00 am
BNE
-
DEN
2 stops38h 50m
Multiple Airlines
Deal found 2/25$878
This BusinessClass deal was found by Cheapflights users on 2/22. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:50 pm
DEN
-
BNE
1 stop19h 15m
Multiple Airlines
Tue 7/2810:00 am
BNE
-
DEN
2 stops38h 45m
Multiple Airlines
Deal found 2/22$879
This BusinessClass deal was found by Cheapflights users on 2/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:30 pm
DEN
-
BNE
2 stops45h 35m
Asiana Airlines
Wed 5/1310:00 am
BNE
-
DEN
2 stops38h 50m
Asiana Airlines
Deal found 2/25$880
This Trip.com deal was found by Cheapflights users on 2/24. 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.
Sun 3/229:00 am
DEN
-
SYD
2 stops34h 35m
Multiple Airlines
Tue 4/71:15 pm
SYD
-
DEN
2 stops27h 16m
Multiple Airlines
Deal found 2/24$886
This Travelocity deal was found by Cheapflights users on 2/23. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/59:30 am
DEN
-
BNE
1 stop29h 35m
Air Canada
Tue 5/1210:00 am
BNE
-
DEN
1 stop23h 00m
Air Canada
Deal found 2/23$890
This Air Canada deal was found by Cheapflights users on 2/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:50 pm
DEN
-
BNE
1 stop19h 15m
Air Canada
Wed 5/2710:00 am
BNE
-
DEN
1 stop23h 00m
Air Canada
Deal found 2/25$891
This Air Canada deal was found by Cheapflights users on 2/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:50 pm
DEN
-
BNE
1 stop19h 15m
Air Canada
Wed 5/1310:00 am
BNE
-
DEN
1 stop23h 00m
Air Canada
Deal found 2/25$929
This Air Canada deal was found by Cheapflights users on 2/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:50 pm
DEN
-
BNE
1 stop19h 15m
Air Canada
Tue 7/2810:00 am
BNE
-
DEN
1 stop23h 13m
Air Canada
Deal found 2/25$947
This Air Canada deal was found by Cheapflights users on 2/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/107:05 pm
DEN
-
BNE
1 stop20h 00m
Air Canada
Fri 4/1710:00 am
BNE
-
DEN
1 stop18h 35m
Air Canada
Deal found 2/24$966
This Kiwi.com deal was found by Cheapflights users on 2/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1110:29 pm
DEN
-
MEL
1 stop40h 16m
Multiple Airlines
Fri 5/159:45 am
MEL
-
DEN
1 stop24h 04m
Multiple Airlines
Deal found 2/25$1,074
This Delta deal was found by Cheapflights users on 2/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/812:20 pm
ASE
-
SYD
1 stop26h 05m
Delta
Sun 3/159:40 am
SYD
-
ASE
1 stop20h 16m
Delta
Deal found 2/23$1,078
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/159:30 pm
DEN
-
SYD
2 stops46h 20m
Multiple Airlines
Wed 4/225:50 pm
SYD
-
DEN
1 stop40h 26m
Multiple Airlines
Deal found 2/23$1,080

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 February 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$878
(Gurufare)

One-way from

$397
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,327
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 ($232 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 26, 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

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Sun 4/5

7:05 pm-11:50 am

2 stops25h 15m

Adelaide

Sat 4/18

6:55 pm-7:27 pm

2 stops40h 02m

$1,100

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Fri 5/29

2:22 pm-7:00 am

2 stops24h 38m

Sydney Kingsford Smith

Mon 6/15

9:30 am-2:44 pm

2 stops21h 14m

$1,112

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

2:00 pm-6:55 am

2 stops24h 55m

Sydney Kingsford Smith

Sat 8/22

10:20 am-4:56 pm

2 stops22h 36m

$1,152

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

12:00 pm-6:50 am

1 stop26h 50m

Sydney Kingsford Smith

Sat 8/22

9:15 am-8:03 pm

1 stop26h 48m

$1,159

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 3/8

9:51 am-6:30 am

1 stop28h 39m

Brisbane

Sun 3/22

10:40 am-10:20 pm

1 stop27h 40m

$1,168

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 3/8

7:40 pm-7:20 am

2 stops43h 40m

Brisbane

Sun 3/22

9:40 am-11:58 am

1 stop18h 18m

$1,170

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Sun 3/15

7:05 pm-7:10 pm

2 stops31h 35m

Adelaide

Sun 8/9

9:20 pm-11:12 pm

2 stops41h 22m

$1,202

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 3/8

4:10 pm-6:30 am

2 stops22h 20m

Brisbane

Fri 3/27

10:40 am-10:20 pm

1 stop27h 40m

$1,223

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 6/7

11:20 am-6:30 am

1 stop27h 10m

Brisbane

Fri 6/19

10:30 am-11:43 pm

1 stop29h 13m

$1,228

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Fri 5/15

3:50 pm-6:30 am

1 stop22h 40m

Brisbane

Fri 6/12

10:30 am-6:12 pm

1 stop23h 42m

$1,268

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/24

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, September is the cheapest month in which you can book a flight from Colorado to Australia (average of $303). Flying from Colorado to Australia in December is currently the most expensive (average of $823). 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 $1,138, Delta can have you in Australia from Colorado in 20h 26m. 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 $353. However, be on the lookout for offers from Qantas Airways and Alaska 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, September is the cheapest month in which you can book a flight from Colorado to Australia (average of $303). Flying from Colorado to Australia in December is currently the most expensive (average of $823). 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

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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 February 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$1,203FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$596Average$1,448FlexibilityNo cancel feeOn-time74%
Fiji AirwaysCheapest$684Average$1,237FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$724Average$872FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$827Average$1,268FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$834Average$1,292FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$853Average$1,479FlexibilityNo cancel feeOn-time69%

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