HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Australia

$409+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Jan 2 — Jan 91
Fri 1/2
Fri 1/9
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 December 3, 2025.

This Trip.com deal was found by Cheapflights users on 11/30. 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.
Tue 12/95:01 pmDEN - SYD
2 stops25h 34mMultiple Airlines
Mon 3/92:00 pmSYD - DEN
2 stops27h 40mMultiple Airlines
Deal found 11/30$909
This Trip.com deal was found by Cheapflights users on 12/2. 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 12/66:00 amDEN - SYD
2 stops31h 25mMultiple Airlines
Mon 12/85:45 pmSYD - DEN
1 stop24h 32mMultiple Airlines
Deal found 12/2$1,155
This Trip.com deal was found by Cheapflights users on 12/2. 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.
Thu 12/47:15 amDEN - SYD
2 stops30h 10mMultiple Airlines
Sat 12/65:45 pmSYD - DEN
2 stops28h 13mMultiple Airlines
Deal found 12/2$1,252
This Kiwi.com deal was found by Cheapflights users on 12/1. 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.
Thu 12/47:15 amDEN - SYD
2 stops30h 10mMultiple Airlines
Thu 12/115:45 pmSYD - DEN
1 stop24h 32mMultiple Airlines
Deal found 12/1$1,275
This Kiwi.com deal was found by Cheapflights users on 11/30. 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.
Mon 12/110:29 pmDEN - SYD
1 stop38h 56mMultiple Airlines
Mon 12/85:45 pmSYD - DEN
1 stop24h 32mMultiple Airlines
Deal found 11/30$1,278
This Cathay Pacific deal was found by Cheapflights users on 12/2. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:45 pmDEN - PER
2 stops39h 10mMultiple Airlines
Tue 12/98:30 amPER - DEN
2 stops42h 53mMultiple Airlines
Deal found 12/2$1,470
This Air Canada deal was found by Cheapflights users on 12/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:05 pmDEN - CNS
2 stops29h 10mMultiple Airlines
Thu 12/116:00 amCNS - DEN
2 stops23h 37mMultiple Airlines
Deal found 12/1$1,523
This Kiwi.com deal was found by Cheapflights users on 11/30. 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.
Tue 12/306:00 amDEN - MEL
1 stop33h 30mMultiple Airlines
Tue 1/68:15 pmMEL - DEN
2 stops55h 32mMultiple Airlines
Deal found 11/30$1,780
This Kiwi.com deal was found by Cheapflights users on 12/1. 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 12/2410:51 pmDEN - MEL
1 stop40h 39mMultiple Airlines
Tue 1/68:15 pmMEL - DEN
2 stops55h 32mMultiple Airlines
Deal found 12/1$1,790
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 12/95:01 pmDEN - MEL
1 stop22h 29mMultiple Airlines
Tue 12/1610:00 amMEL - DEN
2 stops41h 55mMultiple Airlines
Deal found 12/2$1,806
This FlightHub deal was found by Cheapflights users on 12/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:15 pmDEN - CBR
2 stops23h 45mQantas Airways
Tue 12/238:50 amCBR - DEN
2 stops25h 40mQantas Airways
Deal found 12/2$1,819
This oojo deal was found by Cheapflights users on 12/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/511:50 amDEN - PER
2 stops39h 55mQatar Airways
Sun 12/710:45 pmPER - DEN
2 stops40h 14mQatar Airways
Deal found 12/1$1,858

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 December 3, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$895
(Trip.com)

One-way from

$409
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,424
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. 16% potential increase in price ($205 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 3, 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

Sun 3/8

7:25 pm-7:45 am

2 stops44h 20m

Brisbane

Sun 3/22

9:45 am-6:06 pm

2 stops24h 21m

$952

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sat 1/24

9:05 pm-8:45 am

2 stops42h 40m

Brisbane

Sat 1/31

2:05 pm-12:37 pm

2 stops39h 32m

$972

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 4/5

7:05 pm-11:30 am

2 stops24h 25m

Brisbane

Sat 4/18

8:40 pm-12:38 pm

2 stops31h 58m

$995

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Wed 5/27

6:55 pm-11:30 am

2 stops24h 35m

Brisbane

Fri 6/5

10:00 am-5:10 pm

1 stop23h 10m

$1,014

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Wed 5/20

6:55 pm-7:05 am

1 stop20h 10m

Brisbane

Wed 6/3

10:00 am-5:10 pm

1 stop23h 10m

$1,016

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Thu 5/28

7:05 pm-7:05 am

2 stops44h 00m

Brisbane

Fri 6/5

10:00 am-5:10 pm

1 stop23h 10m

$1,038

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Tue 2/3

11:42 am-8:45 am

2 stops28h 03m

Brisbane

Tue 3/24

5:05 am-12:37 pm

2 stops23h 32m

$1,040

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Mon 2/23

7:05 pm-8:45 am

1 stop20h 40m

Brisbane

Wed 3/4

10:45 am-12:37 pm

1 stop18h 52m

$1,043

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Wed 3/11

7:05 pm-7:45 am

1 stop20h 40m

Brisbane

Mon 3/23

9:45 am-6:06 pm

2 stops48h 21m

$1,043

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Fri 3/6

10:51 pm-10:35 am

2 stops42h 44m

Brisbane

Mon 3/23

7:40 pm-9:52 am

1 stop30h 12m

$1,074

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 60 results
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, March is the cheapest month in which you can book a flight from Colorado to Australia (average of $420). 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 December 3, 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 $1,100, Air Canada can have you in Australia from Colorado in 20h 46m. 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 $420). 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

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.

Alternative routes for Colorado to Australia

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Sydney flights
Los Angeles to Auckland flights
Los Angeles to Melbourne flights
Los Angeles to Papeete flights
San Francisco to Sydney flights
San Francisco to Auckland flights
John F Kennedy Intl to Auckland flights
San Francisco to Melbourne flights
Dallas/Fort Worth to Sydney flights
John F Kennedy Intl to Sydney flights
Newark to Sydney flights
Dallas/Fort Worth to Auckland flights
LaGuardia to Sydney flights
John F Kennedy Intl to Papeete flights
Dallas/Fort Worth to Melbourne flights
Newark to Papeete flights
Seattle to Auckland flights
John F Kennedy Intl to Melbourne flights
Los Angeles to Brisbane flights
Seattle to Sydney flights
Dulles Intl to Sydney flights
Seattle to Papeete flights
O'Hare Intl to Papeete flights
Newark to Auckland flights
Hobby to Sydney flights
Ontario to Sydney flights
Newark to Melbourne flights
Dulles Intl to Melbourne flights
Santa Ana to Sydney flights
Atlanta to Papeete flights
LaGuardia to Auckland flights
O'Hare Intl to Sydney flights
San Francisco to Papeete flights
Ontario to Auckland flights
George Bush Intcntl to Sydney flights
Honolulu to Sydney flights
Dulles Intl to Papeete flights
Dallas/Fort Worth to Papeete flights
Hobby to Auckland flights
Sky Harbor Intl to Papeete flights
Santa Ana to Auckland flights
O'Hare Intl to Auckland flights
Los Angeles to Avalon flights
Atlanta to Sydney flights
Boston to Sydney flights
Los Angeles to Nadi flights
Baltimore to Melbourne flights
Reagan-National to Sydney flights
Denver to Auckland flights
Baltimore to Sydney flights

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 December 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$645Average$1,281FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$708Average$979FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$770Average$1,292FlexibilityNo 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$1,512FlexibilityNo cancel feeOn-time69%

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.
Site
©2025 Cheapflights