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$421+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Jul 27 — Aug 31
Mon 7/27
Mon 8/3
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 27, 2026.

This Trip.com deal was found by Cheapflights users on 6/22. 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.
Tue 10/136:30 am
DEN
-
BNE
2 stops35h 55m
Multiple Airlines
Sun 11/111:25 am
BNE
-
DEN
2 stops30h 00m
Multiple Airlines
Deal found 6/22$900
This Trip.com deal was found by Cheapflights users on 6/25. 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.
Fri 10/166:30 am
DEN
-
SYD
2 stops37h 20m
Multiple Airlines
Sun 11/82:00 pm
SYD
-
DEN
2 stops28h 25m
Multiple Airlines
Deal found 6/25$985
This Kiwi.com deal was found by Cheapflights users on 6/26. 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.
Sat 10/2412:17 pm
DEN
-
SYD
2 stops31h 18m
Multiple Airlines
Tue 11/1011:15 am
SYD
-
DEN
1 stop24h 57m
Multiple Airlines
Deal found 6/26$1,056
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:25 am
DEN
-
SYD
2 stops36h 25m
Multiple Airlines
Tue 8/185:50 pm
SYD
-
DEN
1 stop32h 13m
Multiple Airlines
Deal found 6/22$1,072
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 8/197:25 am
DEN
-
SYD
2 stops36h 25m
Multiple Airlines
Mon 11/1611:15 am
SYD
-
DEN
1 stop40h 40m
Multiple Airlines
Deal found 6/26$1,083
This Kiwi.com deal was found by Cheapflights users on 6/25. 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.
Thu 8/137:00 am
DEN
-
SYD
2 stops36h 50m
Multiple Airlines
Sat 9/55:50 pm
SYD
-
DEN
1 stop22h 54m
Multiple Airlines
Deal found 6/25$1,088
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/110:39 pm
DEN
-
SYD
2 stops45h 11m
Multiple Airlines
Sat 8/295:50 pm
SYD
-
DEN
1 stop22h 56m
Multiple Airlines
Deal found 6/22$1,092
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/133:20 pm
DEN
-
SYD
2 stops28h 30m
Multiple Airlines
Sat 8/155:50 pm
SYD
-
DEN
1 stop22h 52m
Multiple Airlines
Deal found 6/22$1,096
This Kiwi.com deal was found by Cheapflights users on 6/27. 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.
Sat 10/1710:29 pm
DEN
-
SYD
2 stops45h 21m
Multiple Airlines
Thu 11/511:15 am
SYD
-
DEN
1 stop21h 22m
Multiple Airlines
Deal found 6/27$1,097
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 10/206:30 am
DEN
-
SYD
2 stops37h 20m
Multiple Airlines
Thu 11/511:15 am
SYD
-
DEN
1 stop21h 22m
Multiple Airlines
Deal found 6/27$1,098
This Kiwi.com deal was found by Cheapflights users on 6/23. 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.
Thu 11/512:02 pm
DEN
-
SYD
2 stops30h 33m
Multiple Airlines
Tue 11/1711:15 am
SYD
-
DEN
1 stop24h 57m
Multiple Airlines
Deal found 6/23$1,101
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 8/174:20 pm
DEN
-
BNE
2 stops26h 15m
Multiple Airlines
Tue 11/171:10 pm
BNE
-
DEN
1 stop22h 02m
Multiple Airlines
Deal found 6/27$1,151

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 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$900
(Trip.com)

One-way from

$421
(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 27, 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

Tue 10/13

6:30 am-10:25 am

2 stops35h 55m

Brisbane

Sun 11/1

11:25 am-1:25 am

2 stops30h 00m

$900

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Tue 8/11

10:39 pm-12:00 pm

2 stops45h 21m

Melbourne

Tue 8/18

9:45 am-10:03 am

1 stop40h 18m

$1,186

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

11:53 am-8:45 am

2 stops28h 52m

Sydney Kingsford Smith

Sat 8/22

7:20 pm-7:52 pm

2 stops40h 32m

$1,283

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

$1,286

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

7:00 am-7:05 am

2 stops32h 05m

Sydney Kingsford Smith

Sat 8/22

12:00 pm-10:01 am

1 stop38h 01m

$1,292

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Tue 8/11

5:49 pm-10:55 am

2 stops25h 06m

Melbourne

Tue 8/18

8:35 am-7:45 pm

2 stops27h 10m

$1,309

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Mon 9/14

3:57 pm-10:55 am

2 stops27h 28m

Adelaide

Sun 9/27

7:10 pm-6:10 pm

2 stops38h 30m

$1,396

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Thu 8/13

1:52 pm-7:00 am

2 stops25h 08m

Sydney Kingsford Smith

Mon 8/31

10:20 am-8:40 am

2 stops38h 20m

$1,411

Colorado SpringsMelbourne

COS - MEL

COSMEL

Colorado Springs

Sat 10/10

7:40 am-9:35 pm

2 stops44h 55m

Melbourne

Sat 10/31

4:50 pm-10:22 pm

2 stops46h 32m

$1,441

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Thu 8/13

1:03 pm-6:55 am

2 stops25h 52m

Sydney Kingsford Smith

Mon 8/17

9:30 am-4:26 pm

2 stops22h 56m

$1,502

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/23

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 $1,283, Air New Zealand can have you in Australia from Colorado in 28h 52m. 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, 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 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$913FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$682Average$737FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$745Average$924FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$770Average$1,274FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$800Average$1,362FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$844Average$1,335FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$853Average$1,487FlexibilityNo cancel feeOn-time69%
Air New ZealandCheapest$946Average$1,272FlexibilityNo cancel feeOn-time78%

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