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$519+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Jun 23 — Jun 301
Tue 6/23
Tue 6/30
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 May 24, 2026.

This Orbitz deal was found by Cheapflights users on 5/19. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:50 pm
DEN
-
BNE
1 stop19h 15m
Air Canada
Mon 10/1210:00 am
BNE
-
DEN
1 stop29h 08m
Air Canada
Deal found 5/19$1,009
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Tue 8/117:25 am
DEN
-
SYD
1 stop32h 05m
Multiple Airlines
Tue 8/251:15 pm
SYD
-
DEN
2 stops36h 47m
Multiple Airlines
Deal found 5/19$1,075
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Tue 9/1510:29 pm
DEN
-
SYD
1 stop41h 01m
Multiple Airlines
Tue 10/206:00 am
SYD
-
DEN
2 stops44h 40m
Multiple Airlines
Deal found 5/19$1,095
This Trip.com deal was found by Cheapflights users on 5/24. 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.
Fri 7/312:32 pm
DEN
-
SYD
2 stops32h 38m
Multiple Airlines
Sun 8/21:15 pm
SYD
-
DEN
3 stops28h 14m
Multiple Airlines
Deal found 5/24$1,166
This Jetabroad deal was found by Cheapflights users on 5/22. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:10 pm
DEN
-
MEL
2 stops33h 10m
Multiple Airlines
Sat 8/157:30 am
MEL
-
DEN
2 stops28h 08m
Multiple Airlines
Deal found 5/22$1,174
This Travelocity deal was found by Cheapflights users on 5/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/287:50 pm
DEN
-
BNE
2 stops23h 40m
Air Canada
Thu 7/210:15 am
BNE
-
DEN
1 stop24h 00m
Air Canada
Deal found 5/20$1,193
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Tue 6/210:39 pm
DEN
-
SYD
1 stop40h 51m
Multiple Airlines
Wed 6/101:15 pm
SYD
-
DEN
2 stops36h 34m
Multiple Airlines
Deal found 5/19$1,210
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 8/2510:39 pm
DEN
-
SYD
2 stops52h 31m
Multiple Airlines
Sat 9/55:50 pm
SYD
-
DEN
1 stop22h 50m
Multiple Airlines
Deal found 5/22$1,218
This Kiwi.com deal was found by Cheapflights users on 5/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:02 pm
DEN
-
SYD
1 stop27h 28m
Multiple Airlines
Wed 9/305:50 pm
SYD
-
DEN
1 stop19h 40m
Multiple Airlines
Deal found 5/21$1,224
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Tue 8/410:39 pm
DEN
-
SYD
1 stop40h 51m
Multiple Airlines
Thu 8/271:15 pm
SYD
-
DEN
2 stops36h 47m
Multiple Airlines
Deal found 5/19$1,232
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 8/2510:39 pm
DEN
-
SYD
2 stops52h 31m
Multiple Airlines
Sun 9/65:50 pm
SYD
-
DEN
1 stop22h 50m
Multiple Airlines
Deal found 5/22$1,251
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Fri 11/610:29 pm
DEN
-
BNE
1 stop38h 21m
Multiple Airlines
Sat 11/1411:40 am
BNE
-
DEN
2 stops23h 32m
Multiple Airlines
Deal found 5/19$1,255

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 May 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,009
(Orbitz)

One-way from

$519
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,237
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. 11% potential increase in price ($165 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 24, 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

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

9:30 am-1:34 pm

1 stop20h 04m

$1,392

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-7:52 pm

1 stop25h 32m

$1,393

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 7/4

9:20 am-7:00 am

2 stops29h 40m

Sydney Kingsford Smith

Sat 7/11

10:20 am-3:52 pm

2 stops21h 32m

$1,398

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Fri 8/7

7:15 pm-7:00 am

1 stop19h 45m

Sydney Kingsford Smith

Tue 8/11

10:20 am-7:52 pm

1 stop25h 32m

$1,463

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Mon 8/24

1:03 pm-7:00 am

2 stops25h 57m

Sydney Kingsford Smith

Thu 8/27

10:20 am-5:53 pm

2 stops23h 33m

$1,467

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 8/8

5:07 pm-7:00 am

2 stops21h 53m

Sydney Kingsford Smith

Wed 8/12

9:30 am-2:32 pm

2 stops21h 02m

$1,467

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Mon 7/6

1:33 pm-7:00 am

2 stops25h 27m

Sydney Kingsford Smith

Mon 7/13

9:30 am-4:32 pm

2 stops23h 02m

$1,486

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 10/1

7:08 pm-6:50 pm

2 stops31h 42m

Sydney Kingsford Smith

Thu 10/15

8:45 pm-11:35 am

2 stops31h 50m

$1,510

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Mon 9/14

5:45 pm-10:55 am

2 stops25h 40m

Adelaide

Sun 9/27

7:10 pm-12:13 pm

2 stops32h 33m

$1,530

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Fri 6/26

9:10 am-7:05 am

1 stop29h 55m

Brisbane

Mon 7/20

10:00 am-8:45 am

2 stops38h 45m

$1,533

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/19

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 November is currently the most expensive (average of $745). 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 $1,393, Air New Zealand can have you in Australia from Colorado in 19h 48m. 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 November is currently the most expensive (average of $745). 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 May 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$1,215FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$682Average$763FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$745Average$945FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$770Average$1,249FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$800Average$1,427FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$844Average$1,335FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$853Average$1,483FlexibilityNo cancel feeOn-time69%
Air New ZealandCheapest$1,033Average$1,304FlexibilityNo cancel feeOn-time78%

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