What airlines fly to Australia?

Qantas Airways, American Airlines and United Airlines are the top three most popular airlines that fly to Australia from Colorado according to our data. Qantas Airways is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 8 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

How long is the flight from Colorado to Australia?

Flight times from Colorado to Australia vary, but if you’re flying out of Denver and flying into Sydney (one of the most popular routes), then the duration is 19h 11m on average. Another popular route from Colorado to Australia is flying from Colorado Springs to Sydney, which will take roughly 21h 38m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Colorado to Australia?

Prices for flights from Colorado to Australia refresh daily.

How many operators does momondo search for flights from Colorado to Australia?

As of December 2025, there are 8 operators available to choose from for flights from Colorado to Australia.

How old do you have to be to fly from Colorado to Australia?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Australia.

What documentation or ID do you need to fly to Australia?

The necessary travel and health documents for your Australia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$510 Cheap Flights from Colorado to Australia in 2025/26

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Find the cheapest flights from Colorado to Australia

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:05 am - 12:35 pm

DEN

SYD

36h 30m2 stops

2:00 pm - 11:31 pm

SYD

DEN

27h 31m2 stops

$823Multiple Airlines

Fri, Jan 23 - Fri, Jan 30

6:00 am - 10:45 pm

DEN

MEL

46h 45m2 stops

12:00 pm - 12:30 am

MEL

DEN

29h 30m1 stop

$916Multiple Airlines

Mon, Feb 16 - Tue, Mar 10

7:25 pm - 7:45 am

DEN

BNE

44h 20m2 stops

9:45 am - 6:06 pm

BNE

DEN

24h 21m2 stops

$947Air Canada

Sun, Mar 8 - Sun, Mar 22

7:05 pm - 8:45 am

DEN

BNE

20h 40m1 stop

10:45 am - 12:26 pm

BNE

DEN

18h 41m1 stop

$956Air Canada

Tue, Jan 20 - Tue, Jan 27

7:23 pm - 9:00 am

DEN

SYD

19h 37m1 stop

11:20 am - 12:17 pm

SYD

DEN

18h 57m1 stop

$1,070Qantas Airways

Sun, Feb 1 - Sun, Feb 15

1:13 pm - 9:30 am

DEN

MEL

27h 17m1 stop

12:00 pm - 7:34 pm

MEL

DEN

24h 34m1 stop

$1,119Qantas Airways

Tue, Mar 10 - Thu, Mar 19

11:35 am - 9:30 am

DEN

ADL

28h 25m1 stop

2:55 pm - 4:34 pm

ADL

DEN

19h 09m1 stop

$1,163United Airlines

Mon, Feb 16 - Mon, Mar 2

1:27 pm - 9:30 am

DEN

ADL

26h 33m1 stop

2:55 pm - 10:30 pm

ADL

DEN

25h 05m2 stops

$1,167United Airlines

Mon, Feb 16 - Mon, Mar 2

12:20 pm - 10:30 am

COS

SYD

28h 10m2 stops

11:45 am - 9:44 pm

SYD

COS

26h 59m2 stops

$1,211Air New Zealand

Wed, Feb 18 - Wed, Mar 11

12:20 pm - 10:30 am

COS

SYD

28h 10m2 stops

7:15 pm - 9:44 pm

SYD

COS

43h 29m2 stops

$1,233Air New Zealand

Wed, Feb 18 - Tue, Mar 10

Qantas Airways flights from Colorado to Australia

Our best Qantas Airways deals on Colorado to Australia flight tickets

Qantas Airways

Feb 1

DEN7:23 pmDenver Intl

19h 37m

1 stop

SYD9:00 amSydney Kingsford Smith

Feb 15

SYD11:20 amSydney Kingsford Smith

18h 57m

1 stop

DEN12:17 pmDenver Intl

$1,070

Find similar

Qantas Airways

Feb 7

DEN7:23 pmDenver Intl

19h 37m

1 stop

SYD9:00 amSydney Kingsford Smith

Feb 14

SYD5:45 pmSydney Kingsford Smith

19h 48m

1 stop

DEN7:33 pmDenver Intl

$1,098

Find similar

Qantas Airways

Feb 7

DEN12:53 pmDenver Intl

24h 32m

1 stop

SYD7:25 amSydney Kingsford Smith

Feb 14

SYD11:20 amSydney Kingsford Smith

18h 57m

1 stop

DEN12:17 pmDenver Intl

$1,108

Find similar

Air Canada flights from Colorado to Australia

Our best Air Canada deals on Colorado to Australia flight tickets

Air Canada

Mar 8

DEN7:25 pmDenver Intl

44h 20m

2 stops

BNE7:45 amBrisbane

Mar 22

BNE9:45 amBrisbane

18h 43m

1 stop

DEN12:28 pmDenver Intl

$947

Find similar

Air Canada

Jan 20

DEN11:42 amDenver Intl

28h 03m

2 stops

BNE8:45 amBrisbane

Jan 27

BNE10:45 amBrisbane

24h 22m

2 stops

DEN6:07 pmDenver Intl

$956

Find similar

Air Canada

Feb 8

DEN11:42 amDenver Intl

28h 03m

2 stops

BNE8:45 amBrisbane

Feb 15

BNE10:45 amBrisbane

24h 20m

2 stops

DEN6:05 pmDenver Intl

$957

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 1/23

6:05 am-12:35 pm

2 stops36h 30m

Sydney Kingsford Smith

Fri 1/30

2:00 pm-11:31 pm

2 stops27h 31m

$823

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Mon 2/16

6:00 am-10:45 pm

2 stops46h 45m

Melbourne

Tue 3/10

12:00 pm-12:30 am

1 stop29h 30m

$916

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

$947

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Tue 1/20

7:05 pm-8:45 am

1 stop20h 40m

Brisbane

Tue 1/27

10:45 am-12:26 pm

1 stop18h 41m

$956

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/1

7:23 pm-9:00 am

1 stop19h 37m

Sydney Kingsford Smith

Sun 2/15

11:20 am-12:17 pm

1 stop18h 57m

$1,070

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Tue 3/10

1:13 pm-9:30 am

1 stop27h 17m

Melbourne

Thu 3/19

12:00 pm-7:34 pm

1 stop24h 34m

$1,119

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Mon 2/16

11:35 am-9:30 am

1 stop28h 25m

Adelaide

Mon 3/2

2:55 pm-4:34 pm

1 stop19h 09m

$1,163

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Mon 2/16

1:27 pm-9:30 am

1 stop26h 33m

Adelaide

Mon 3/2

2:55 pm-10:30 pm

2 stops25h 05m

$1,167

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 2/18

12:20 pm-10:30 am

2 stops28h 10m

Sydney Kingsford Smith

Wed 3/11

11:45 am-9:44 pm

2 stops26h 59m

$1,211

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 2/18

12:20 pm-10:30 am

2 stops28h 10m

Sydney Kingsford Smith

Tue 3/10

7:15 pm-9:44 pm

2 stops43h 29m

$1,233

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Australia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Australia?

The month of April is, on average, the cheapest month to fly to Australia from Colorado, with most prices found around $864. If you aren’t able to travel during the month of April, then book flights to Australia from Colorado during May instead. Flights to Australia in May, while not as cheap as those in April, still average around $865.

What is the cheapest day to depart on your flight to Australia?

The cheapest day to depart from Colorado to Australia is on a Tuesday. Travelers who choose to depart for Australia on a Tuesday will often find tickets for as low as $1,197. On the other hand, Thursday is the most expensive day to depart from Colorado because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,362.

What is the cheapest time of day to depart on your flight to Australia?

Flying to Australia from Colorado at noon is the least expensive time of day to depart. momondo users have found prices as low as $933 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,292 on average. Flights to Australia from Colorado in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Australia?

You are more likely to see cheaper flights to Australia from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,075 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Colorado for as low as $990 on momondo.

Can stopping save me money on Colorado to Australia flights?

You could potentially save up to 27% on your flight if you consider stops on a Colorado to Australia flight.

Cheap Colorado to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Australia

Fastest flight time	19h 11m
Direct flights	None

The fastest flight from Colorado to Australia takes 19h 11m

There are no direct flights from Colorado to Australia. There are no popular flight routes from Colorado to Australia.

Search flight deals

When did momondo last update prices for flights from Colorado to Australia?
Prices for flights from Colorado to Australia refresh daily.
How many operators does momondo search for flights from Colorado to Australia?
As of December 2025, there are 8 operators available to choose from for flights from Colorado to Australia.
How old do you have to be to fly from Colorado to Australia?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Australia.
What documentation or ID do you need to fly to Australia?
The necessary travel and health documents for your Australia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Colorado to Australia

Compare and see reviews for airlines that fly from Colorado to Australia with momondo

Airline	Rating	Free Cancellation	Price
Fiji Airways	PriceFrom $684	Free Cancellation	Rating 8.0 211 reviews	Search Fiji Airways flights
Delta	PriceFrom $698	Free Cancellation	Rating 7.9 8,014 reviews	Search Delta flights
Alaska Airlines	PriceFrom $745	Free Cancellation	Rating 8.0 11,534 reviews	Search Alaska Airlines flights
Qantas Airways	PriceFrom $765	Free Cancellation	Rating 7.5 953 reviews	Search Qantas Airways flights
Air Canada	PriceFrom $770	Free Cancellation	Rating 7.1 10,562 reviews	Search Air Canada flights
American Airlines	PriceFrom $804	Free Cancellation	Rating 7.2 11,064 reviews	Search American Airlines flights
Air New Zealand	PriceFrom $834	Free Cancellation	Rating 8.0 560 reviews	Search Air New Zealand flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.4 9,115 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Australia?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Colorado to Australia for you.

Can I find flights from Colorado to Australia with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Australia from Colorado with this policy.

How can momondo help me find flights from Colorado to Australia?

Once all potential Colorado to Australia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Colorado to Australia right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado to Australia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Australia and let you know when they change.