What is the cheapest airline that flies from Colorado to Australia?

Fiji Airways and Air Canada are the most popular carriers operating from Colorado to Australia

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 43m on average. Another popular route from Colorado to Australia is flying from Aspen to Sydney, which will take roughly 26h 29m. Keep in mind that layovers or delays could extend your travel time.

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 37% 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.

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 September 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.

$495 Cheap Flights from Colorado to Australia in 2025/26

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Find the cheapest flights from Colorado to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

8:02 pm - 7:45 pmDEN-SYD

29h 43m2 stops

9:40 pm - 12:27 pmSYD-DEN

32h 47m2 stops

$1,015Alaska Airlines

Find Deal

Fri, Nov 7 - Fri, Nov 14

3:37 pm - 7:45 pmDEN-SYD

34h 08m2 stops

9:40 pm - 12:27 pmSYD-DEN

32h 47m2 stops

$1,044Alaska Airlines

Find Deal

Fri, Nov 7 - Fri, Nov 14

9:58 am - 6:10 amDEN-SYD

26h 12m2 stops

5:45 pm - 12:57 amSYD-DEN

25h 12m1 stop

$1,100Multiple Airlines

Find Deal

Tue, Nov 11 - Mon, Nov 17

10:00 am - 9:50 amDEN-SYD

54h 50m2 stops

5:45 pm - 7:00 pmSYD-DEN

19h 15m1 stop

$1,110Multiple Airlines

Find Deal

Wed, Oct 29 - Fri, Nov 14

6:30 am - 8:00 amDEN-MEL

31h 30m1 stop

10:10 am - 11:32 amMEL-DEN

19h 22m1 stop

$1,142Delta

Find Deal

Mon, Jan 12 - Wed, Jan 21

11:15 am - 8:45 amDEN-SYD

27h 30m2 stops

11:45 am - 6:07 pmSYD-DEN

24h 22m2 stops

$1,174Air New Zealand

Find Deal

Wed, Nov 12 - Wed, Nov 26

7:05 pm - 9:35 amDEN-SYD

20h 30m1 stop

11:20 am - 12:37 pmSYD-DEN

19h 17m1 stop

$1,178Air Canada

Find Deal

Sun, Feb 1 - Fri, Feb 13

3:43 pm - 1:15 pmDEN-MEL

28h 32m2 stops

7:10 am - 12:29 pmMEL-DEN

22h 19m2 stops

$1,183Air Canada

Find Deal

Tue, Mar 10 - Thu, Mar 19

11:15 am - 8:45 amDEN-SYD

27h 30m2 stops

11:45 am - 7:46 pmSYD-DEN

26h 01m2 stops

$1,186Air New Zealand

Find Deal

Wed, Nov 12 - Wed, Nov 26

6:25 pm - 8:20 amDEN-BNE

44h 55m2 stops

11:05 am - 11:32 amBNE-DEN

17h 27m1 stop

$1,376Delta

Find Deal

Tue, Feb 10 - Wed, Feb 18

Air New Zealand flights from Colorado to Australia

Our best Air New Zealand deals on Colorado to Australia flight tickets

Air New Zealand

Nov 12

DEN11:15 amDenver Intl

27h 30m

2 stops

SYD8:45 amSydney Kingsford Smith

Nov 26

SYD11:45 amSydney Kingsford Smith

24h 22m

2 stops

DEN6:07 pmDenver Intl

$1,174

Find similar

Air New Zealand

Nov 12

DEN11:15 amDenver Intl

27h 30m

2 stops

SYD8:45 amSydney Kingsford Smith

Nov 26

SYD11:45 amSydney Kingsford Smith

26h 01m

2 stops

DEN7:46 pmDenver Intl

$1,186

Find similar

Air New Zealand

Oct 27

DEN4:05 pmDenver Intl

23h 40m

2 stops

SYD8:45 amSydney Kingsford Smith

Nov 12

SYD1:55 pmSydney Kingsford Smith

22h 03m

2 stops

DEN5:58 pmDenver Intl

$1,187

Find similar

Alaska Airlines flights from Colorado to Australia

Our best Alaska Airlines deals on Colorado to Australia flight tickets

Alaska Airlines

Nov 7

DEN8:02 pmDenver Intl

29h 43m

2 stops

SYD7:45 pmSydney Kingsford Smith

Nov 14

SYD9:40 pmSydney Kingsford Smith

32h 47m

2 stops

DEN12:27 pmDenver Intl

$1,015

Find similar

Alaska Airlines

Nov 7

DEN3:37 pmDenver Intl

34h 08m

2 stops

SYD7:45 pmSydney Kingsford Smith

Nov 14

SYD9:40 pmSydney Kingsford Smith

32h 47m

2 stops

DEN12:27 pmDenver Intl

$1,044

Find similar

Alaska Airlines

Jan 21

DEN7:50 pmDenver Intl

29h 55m

2 stops

SYD7:45 pmSydney Kingsford Smith

Feb 28

SYD9:40 pmSydney Kingsford Smith

31h 59m

2 stops

DEN11:39 amDenver Intl

$1,062

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 11/7

8:02 pm-7:45 pm

2 stops29h 43m

Sydney Kingsford Smith

Fri 11/14

9:40 pm-12:27 pm

2 stops32h 47m

$1,015

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 11/7

3:37 pm-7:45 pm

2 stops34h 08m

Sydney Kingsford Smith

Fri 11/14

9:40 pm-12:27 pm

2 stops32h 47m

$1,044

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 11/11

9:58 am-6:10 am

2 stops26h 12m

Sydney Kingsford Smith

Mon 11/17

5:45 pm-12:57 am

1 stop25h 12m

$1,100

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 10/29

10:00 am-9:50 am

2 stops54h 50m

Sydney Kingsford Smith

Fri 11/14

5:45 pm-7:00 pm

1 stop19h 15m

$1,110

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Mon 1/12

6:30 am-8:00 am

1 stop31h 30m

Melbourne

Wed 1/21

10:10 am-11:32 am

1 stop19h 22m

$1,142

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 11/12

11:15 am-8:45 am

2 stops27h 30m

Sydney Kingsford Smith

Wed 11/26

11:45 am-6:07 pm

2 stops24h 22m

$1,174

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/1

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Fri 2/13

11:20 am-12:37 pm

1 stop19h 17m

$1,178

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Tue 3/10

3:43 pm-1:15 pm

2 stops28h 32m

Melbourne

Thu 3/19

7:10 am-12:29 pm

2 stops22h 19m

$1,183

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 11/12

11:15 am-8:45 am

2 stops27h 30m

Sydney Kingsford Smith

Wed 11/26

11:45 am-7:46 pm

2 stops26h 01m

$1,186

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Tue 2/10

6:25 pm-8:20 am

2 stops44h 55m

Brisbane

Wed 2/18

11:05 am-11:32 am

1 stop17h 27m

$1,376

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 $871. 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 $874.

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 $1,072 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 $924 on momondo.

Can stopping save me money on Colorado to Australia flights?

You could potentially save up to 21% 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

Direct flights	None

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 September 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
Qantas Airways	PriceFrom $645	Free Cancellation	Rating 7.5 908 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $695	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $745	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Delta	PriceFrom $786	Free Cancellation	Rating 7.9 7,973 reviews	Search Delta flights
Air New Zealand	PriceFrom $834	Free Cancellation	Rating 7.9 506 reviews	Search Air New Zealand flights
Air Canada	PriceFrom $962	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
United Airlines	PriceFrom $1,157	Free Cancellation	Rating 7.4 8,928 reviews	Search United Airlines flights
Fiji Airways	PriceFrom $1,159	Free Cancellation	Rating 8.0 205 reviews	Search Fiji Airways 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.