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$502+ 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
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
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 diciembre 12, 2025.

This Air Canada deal was found by Cheapflights users on 12/9. 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.
mar. 12/307:05 pmDEN - SYD
1 stop20h 30mAir Canada
mar. 1/137:15 pmSYD - DEN
2 stops35h 11mAir Canada
Deal found 12/9$1,443
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/307:05 pmDEN - SYD
2 stops25h 35mMultiple Airlines
mar. 1/138:30 amSYD - DEN
2 stops21h 56mMultiple Airlines
Deal found 12/11$1,508
This Air Canada deal was found by Cheapflights users on 12/11. 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.
vie. 12/267:05 pmDEN - BNE
1 stop20h 40mAir Canada
lun. 1/2610:45 amBNE - DEN
1 stop18h 52mAir Canada
Deal found 12/11$1,559
This Delta deal was found by Cheapflights users on 12/9. 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.
mar. 12/301:10 pmDEN - SYD
1 stop23h 40mDelta
mar. 1/1310:40 amSYD - DEN
1 stop18h 55mDelta
Deal found 12/9$1,663
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/283:41 pmDEN - SYD
1 stop21h 19mUnited Airlines
lun. 1/1211:20 amSYD - DEN
2 stops26h 52mUnited Airlines
Deal found 12/10$1,667
This Air Canada deal was found by Cheapflights users on 12/10. 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.
vie. 12/1211:44 amDEN - SYD
2 stops27h 51mAir Canada
lun. 12/1511:20 amSYD - DEN
2 stops24h 43mAir Canada
Deal found 12/10$1,668
This Delta deal was found by Cheapflights users on 12/11. 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.
mié. 12/241:10 pmDEN - SYD
1 stop25h 20mDelta
dom. 1/1110:40 amSYD - DEN
1 stop30h 31mDelta
Deal found 12/11$1,671
This Air Canada deal was found by Cheapflights users on 12/11. 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.
dom. 12/287:05 pmDEN - SYD
2 stops29h 00mAir Canada
lun. 1/127:15 pmSYD - DEN
2 stops35h 22mAir Canada
Deal found 12/11$1,688
This Delta deal was found by Cheapflights users on 12/10. 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.
jue. 12/251:10 pmDEN - SYD
1 stop23h 40mDelta
mié. 1/1410:40 amSYD - DEN
1 stop25h 30mDelta
Deal found 12/10$1,713
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/263:55 pmDEN - BNE
2 stops22h 35mUnited Airlines
lun. 1/2611:40 amBNE - DEN
2 stops21h 52mUnited Airlines
Deal found 12/11$1,713
This Kiwi.com deal was found by Cheapflights users on 12/10. 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.
mié. 12/2410:51 pmDEN - MEL
1 stop40h 39mMultiple Airlines
mar. 1/68:15 pmMEL - DEN
2 stops55h 32mMultiple Airlines
Deal found 12/10$1,799
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1111:30 amDEN - MEL
1 stop28h 00mUnited Airlines
lun. 12/2211:30 amMEL - DEN
1 stop24h 49mUnited Airlines
Deal found 12/10$2,057

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 diciembre 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$906
(lol.travel)

One-way from

$502
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,604
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.
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From Colorado to Australia
Search Deals
One-way flight from Colorado to Australia
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($294 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 diciembre 12, 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

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

lun. 1/19

7:05 pm-8:45 am

1 stop20h 40m

Brisbane

mar. 1/27

10:45 am-6:07 pm

2 stops24h 22m

$956

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

dom. 2/1

7:05 pm-3:30 pm

2 stops27h 25m

Brisbane

mar. 2/10

6:35 am-12:37 pm

2 stops23h 02m

$996

DenverSydney

DEN - SYD

DENSYD

Denver Intl

lun. 2/9

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

sáb. 2/28

11:20 am-12:37 pm

1 stop19h 17m

$997

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

dom. 1/18

7:05 pm-8:45 am

1 stop20h 40m

Brisbane

dom. 2/1

10:45 am-5:44 pm

1 stop23h 59m

$1,006

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

dom. 3/8

7:05 pm-11:30 am

2 stops24h 25m

Brisbane

dom. 3/22

6:30 pm-12:28 pm

2 stops33h 58m

$1,037

DenverSydney

DEN - SYD

DENSYD

Denver Intl

sáb. 1/31

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

jue. 2/12

11:20 am-12:28 pm

1 stop19h 08m

$1,039

DenverSydney

DEN - SYD

DENSYD

Denver Intl

sáb. 2/7

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

sáb. 2/14

11:20 am-6:05 pm

2 stops24h 45m

$1,039

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

dom. 4/5

7:05 pm-12:00 pm

2 stops24h 55m

Brisbane

sáb. 4/18

7:05 pm-12:38 pm

2 stops33h 33m

$1,060

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

jue. 3/12

7:05 pm-7:45 am

1 stop20h 40m

Brisbane

dom. 3/22

9:45 am-12:37 pm

1 stop18h 52m

$1,062

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

jue. 3/5

7:25 pm-8:45 am

2 stops44h 20m

Brisbane

lun. 3/9

10:45 am-12:37 pm

1 stop17h 52m

$1,088

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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 $418). 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 diciembre 12, 2025.

It’s typically best to fly out from Colorado to Australia at noon. Doing so could potentially save you 31% 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 $1,156, Air Canada can have you in Australia from Colorado in 19h 50m. 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 Alaska Airlines, with whom users have recently found tickets for as low as $331. However, be on the lookout for offers from American Airlines and Qantas Airways, 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, March is the cheapest month in which you can book a flight from Colorado to Australia (average of $418). 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 diciembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$709Average$978FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$765Average$1,234FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$770Average$1,287FlexibilityNo cancel feeOn-time67%
DeltaCheapest$786Average$1,382FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$791Average$1,319FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$834Average$1,302FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$853Average$1,505FlexibilityNo cancel feeOn-time69%

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