HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Australia

$524+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado to Australia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 August 2, 2026.

This Trip.com deal was found by Cheapflights users on 7/30. 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 9/912:42 pm
DEN
-
SYD
2 stops31h 08m
Multiple Airlines
Wed 9/231:15 pm
SYD
-
DEN
3 stops26h 29m
Multiple Airlines
Deal found 7/30$936
This Trip.com deal was found by Cheapflights users on 7/31. 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 9/141:10 pm
DEN
-
SYD
2 stops30h 40m
Multiple Airlines
Mon 9/281:15 pm
SYD
-
DEN
3 stops39h 31m
Multiple Airlines
Deal found 7/31$949
This Trip.com deal was found by Cheapflights users on 8/2. 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 9/121:10 pm
DEN
-
SYD
2 stops41h 15m
Multiple Airlines
Wed 9/236:15 am
SYD
-
DEN
3 stops33h 29m
Multiple Airlines
Deal found 8/2$966
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 11/410:29 pm
DEN
-
SYD
1 stop37h 56m
Multiple Airlines
Wed 11/112:00 pm
SYD
-
DEN
2 stops22h 12m
Multiple Airlines
Deal found 7/29$986
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 9/210:39 pm
DEN
-
SYD
1 stop40h 51m
Multiple Airlines
Tue 9/81:15 pm
SYD
-
DEN
2 stops44h 17m
Multiple Airlines
Deal found 7/30$989
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 10/2010:29 pm
DEN
-
SYD
1 stop40h 01m
Multiple Airlines
Thu 11/52:00 pm
SYD
-
DEN
2 stops28h 25m
Multiple Airlines
Deal found 7/31$995
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 10/1410:29 pm
DEN
-
MEL
1 stop39h 16m
Multiple Airlines
Wed 10/212:25 pm
MEL
-
DEN
2 stops36h 15m
Multiple Airlines
Deal found 8/1$1,004
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 11/1812:02 pm
DEN
-
SYD
1 stop24h 23m
Multiple Airlines
Wed 12/22:00 pm
SYD
-
DEN
2 stops27h 28m
Multiple Airlines
Deal found 7/30$1,010
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 10/2712:02 pm
DEN
-
SYD
1 stop25h 23m
Multiple Airlines
Tue 11/102:00 pm
SYD
-
DEN
2 stops37h 55m
Multiple Airlines
Deal found 8/2$1,013
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 11/199:40 am
DEN
-
SYD
1 stop26h 45m
Multiple Airlines
Wed 12/22:00 pm
SYD
-
DEN
2 stops27h 28m
Multiple Airlines
Deal found 7/30$1,015
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 10/2710:29 pm
DEN
-
MEL
1 stop42h 01m
Multiple Airlines
Wed 11/41:45 pm
MEL
-
DEN
2 stops22h 27m
Multiple Airlines
Deal found 8/1$1,052
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/31:10 pm
DEN
-
SYD
1 stop25h 20m
Multiple Airlines
Tue 10/202:15 pm
SYD
-
DEN
2 stops39h 34m
Multiple Airlines
Deal found 7/30$1,054

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 August 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$936
(Trip.com)

One-way from

$524
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,370
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. 13% potential increase in price ($222 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 2, 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

Thu 8/27

7:00 am-10:50 pm

2 stops47h 50m

Brisbane

Thu 9/3

11:50 am-12:44 am

2 stops28h 54m

$1,140

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

7:12 pm-7:00 am

1 stop19h 48m

Sydney Kingsford Smith

Mon 8/24

9:30 am-8:26 pm

1 stop26h 56m

$1,237

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

$1,287

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Sun 12/27

8:51 pm-9:30 am

1 stop43h 09m

Adelaide

Sun 1/10

8:40 am-10:53 pm

2 stops31h 43m

$1,419

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Tue 12/29

11:15 am-10:55 am

2 stops30h 10m

Adelaide

Mon 1/11

2:55 pm-8:28 pm

1 stop23h 03m

$1,425

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 8/19

1:52 pm-6:55 am

2 stops25h 03m

Sydney Kingsford Smith

Sun 8/23

10:20 am-4:26 pm

2 stops22h 06m

$1,427

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Tue 9/15

1:10 pm-11:15 am

2 stops30h 35m

Adelaide

Tue 9/22

12:40 pm-3:30 pm

3 stops42h 20m

$1,434

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Thu 12/24

7:40 pm-9:30 am

1 stop20h 20m

Adelaide

Mon 1/4

2:55 pm-8:20 am

2 stops34h 55m

$1,451

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 10/8

5:57 pm-6:50 pm

2 stops31h 53m

Sydney Kingsford Smith

Sun 10/18

8:45 pm-9:36 pm

2 stops41h 51m

$1,464

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 10/7

5:57 pm-6:50 pm

2 stops31h 53m

Sydney Kingsford Smith

Thu 10/22

8:45 pm-6:01 pm

2 stops38h 16m

$1,490

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/2

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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, April is the cheapest month in which you can book a flight from Colorado to Australia (average of $1,136). Flying from Colorado to Australia in December is currently the most expensive (average of $1,836). 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 35 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 $1,506, United Airlines can have you in Australia from Colorado in 19h 15m. The distance from Colorado to Australia is about 8012 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, April is the cheapest month in which you can book a flight from Colorado to Australia (average of $1,136). Flying from Colorado to Australia in December is currently the most expensive (average of $1,836). 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 7 airlines flying from Colorado to Australia

Discover the top 7 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 August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$673FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$682Average$737FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$827Average$1,328FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$844Average$1,545FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$849Average$1,399FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$853Average$1,499FlexibilityNo cancel feeOn-time69%
Air New ZealandCheapest$946Average$1,264FlexibilityNo cancel feeOn-time78%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.