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 23h 20m on average. Another popular route from Colorado to Australia is flying from Colorado Springs to Sydney, which will take roughly 25h 52m. Keep in mind that layovers or delays could extend your travel time.

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

United Airlines, Air Canada, and Turkish Airlines are the most popular carriers operating from Colorado to Australia

What airlines fly to Australia?

United Airlines, Qantas Airways and Air Canada are the top three most popular airlines that fly to Australia from Colorado according to our data. United Airlines is the first choice among our users, with 33% 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 June 2026, 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.

$430 Cheap Flights from Colorado to Australia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 12:00 pm

DEN

MEL

37h 00m

2 stops

1:30 pm - 12:42 am

MEL

DEN

27h 12m

2 stops

$855Multiple Airlines

Thu, Aug 6 - Thu, Aug 13

3:20 pm - 12:00 pm

DEN

MEL

28h 40m

2 stops

1:30 pm - 3:50 am

MEL

DEN

30h 20m

3 stops

$958Multiple Airlines

Thu, Aug 6 - Thu, Aug 13

1:30 pm - 7:00 am

COS

SYD

25h 30m

2 stops

10:20 am - 6:47 pm

SYD

COS

24h 27m

2 stops

$1,192United Airlines

Wed, Aug 5 - Wed, Aug 12

12:20 pm - 10:55 am

COS

MEL

30h 35m

2 stops

8:35 am - 9:27 pm

MEL

COS

28h 52m

2 stops

$1,217Air New Zealand

Wed, Aug 12 - Wed, Aug 19

6:00 am - 11:05 am

DEN

BNE

37h 05m

2 stops

9:40 am - 10:15 pm

BNE

DEN

28h 35m

2 stops

$1,224Air New Zealand

Mon, Aug 3 - Mon, Aug 10

9:40 am - 6:55 am

ASE

SYD

29h 15m

1 stop

10:20 am - 7:52 pm

SYD

ASE

25h 32m

1 stop

$1,286United Airlines

Thu, Aug 13 - Sat, Aug 22

9:10 am - 11:50 am

DEN

ADL

35h 10m

2 stops

9:20 pm - 4:58 pm

ADL

DEN

35h 08m

2 stops

$1,556Air Canada

Mon, Sep 14 - Sun, Sep 27

6:56 pm - 6:45 pm

DEN

PER

57h 49m

2 stops

10:45 pm - 5:35 pm

PER

DEN

33h 50m

2 stops

$1,671Qatar Airways

Thu, Oct 29 - Wed, Nov 11

7:05 am - 6:45 pm

DEN

PER

45h 40m

2 stops

10:45 pm - 5:35 pm

PER

DEN

33h 50m

2 stops

$1,703Qatar Airways

Fri, Oct 30 - Tue, Nov 10

7:50 pm - 11:35 am

DEN

CBR

22h 45m

2 stops

6:35 am - 6:18 pm

CBR

DEN

28h 43m

2 stops

$1,860Air Canada

Sat, Oct 17 - Wed, Oct 21

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United Airlines flights from Colorado to Australia

Our best United Airlines deals on Colorado to Australia flight tickets

United Airlines

Aug 5

COS1:30 pmColorado Springs

25h 30m

2 stops

SYD7:00 amSydney Kingsford Smith

Aug 12

SYD10:20 amSydney Kingsford Smith

24h 27m

2 stops

COS6:47 pmColorado Springs

$1,192

United Airlines

Aug 13

ASE9:40 amAspen Pitkin County

29h 15m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 22

SYD10:20 amSydney Kingsford Smith

25h 32m

1 stop

ASE7:52 pmAspen Pitkin County

$1,286

United Airlines

Aug 13

ASE9:40 amAspen Pitkin County

29h 15m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 22

SYD10:20 amSydney Kingsford Smith

25h 32m

1 stop

ASE7:52 pmAspen Pitkin County

$1,287

Qantas Airways flights from Colorado to Australia

Our best Qantas Airways deals on Colorado to Australia flight tickets

Qantas Airways

Nov 23

DEN4:45 pmDenver Intl

29h 05m

2 stops

AVV3:50 pmMelbourne Avalon

Jan 13

AVV6:00 amMelbourne Avalon

24h 18m

2 stops

DEN12:18 pmDenver Intl

$1,805

Qantas Airways

Oct 18

DEN11:58 amDenver Intl

33h 12m

2 stops

AVV2:10 pmMelbourne Avalon

Oct 31

AVV4:25 pmMelbourne Avalon

41h 29m

2 stops

DEN4:54 pmDenver Intl

$1,806

Qantas Airways

Nov 23

DEN7:15 pmDenver Intl

24h 50m

2 stops

AVV2:05 pmMelbourne Avalon

Jan 13

AVV6:00 amMelbourne Avalon

24h 18m

2 stops

DEN12:18 pmDenver Intl

$1,809

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Thu 8/6

7:00 am-12:00 pm

2 stops37h 00m

Melbourne

Thu 8/13

1:30 pm-12:42 am

2 stops27h 12m

$855

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Thu 8/6

3:20 pm-12:00 pm

2 stops28h 40m

Melbourne

Thu 8/13

1:30 pm-3:50 am

3 stops30h 20m

$958

Quickest round-trip

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 8/5

1:30 pm-7:00 am

2 stops25h 30m

Sydney Kingsford Smith

Wed 8/12

10:20 am-6:47 pm

2 stops24h 27m

$1,192

Colorado SpringsMelbourne

COS - MEL

COSMEL

Colorado Springs

Wed 8/12

12:20 pm-10:55 am

2 stops30h 35m

Melbourne

Wed 8/19

8:35 am-9:27 pm

2 stops28h 52m

$1,217

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Mon 8/3

6:00 am-11:05 am

2 stops37h 05m

Brisbane

Mon 8/10

9:40 am-10:15 pm

2 stops28h 35m

$1,224

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

$1,286

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Mon 9/14

9:10 am-11:50 am

2 stops35h 10m

Adelaide

Sun 9/27

9:20 pm-4:58 pm

2 stops35h 08m

$1,556

DenverPerth

DEN - PER

DENPER

Denver Intl

Thu 10/29

6:56 pm-6:45 pm

2 stops57h 49m

Perth

Wed 11/11

10:45 pm-5:35 pm

2 stops33h 50m

$1,671

DenverPerth

DEN - PER

DENPER

Denver Intl

Fri 10/30

7:05 am-6:45 pm

2 stops45h 40m

Perth

Tue 11/10

10:45 pm-5:35 pm

2 stops33h 50m

$1,703

DenverCanberra

DEN - CBR

DENCBR

Denver Intl

Sat 10/17

7:50 pm-11:35 am

2 stops22h 45m

Canberra

Wed 10/21

6:35 am-6:18 pm

2 stops28h 43m

$1,860

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 January is, on average, the cheapest month to fly to Australia from Colorado, with most prices found around $72. If you aren’t able to travel during the month of January, then book flights to Australia from Colorado during September instead. Flights to Australia in September, while not as cheap as those in January, still average around $73.

How far in advance should I book a flight from Colorado 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 $1,318 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 $1,158 on momondo.

Can stopping save me money on Colorado to Australia flights?

You could potentially save up to 14% 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	21h 55m
Direct flights	None

The fastest flight from Colorado to Australia takes 21h 55m

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

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Frequently asked questions about flying from Colorado to Australia

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 June 2026, 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
Delta	PriceFrom $117	Free Cancellation	Rating 7.8 8,445 reviews	Search Delta flights
Fiji Airways	PriceFrom $682	Free Cancellation	Rating 8.1 245 reviews	Search Fiji Airways flights
Alaska Airlines	PriceFrom $745	Free Cancellation	Rating 7.9 12,577 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom $770	Free Cancellation	Rating 7.1 11,260 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $800	Free Cancellation	Rating 7.5 1,050 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $844	Free Cancellation	Rating 7.1 11,768 reviews	Search American Airlines flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.4 9,891 reviews	Search United Airlines flights
Air New Zealand	PriceFrom $946	Free Cancellation	Rating 8.0 646 reviews	Search Air New Zealand 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.