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

Alaska Airlines, Cathay Pacific, and Turkish Airlines 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 21h 05m on average. Another popular route from Colorado to Australia is flying from Aspen to Sydney, which will take roughly 24h 48m. Keep in mind that layovers or delays could extend your travel time.

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 31% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 7 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 November 2026, there are 7 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.

$498 Cheap Flights from Colorado to Australia in 2026/27

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.

2:22 pm - 6:25 amDEN Denver Intl-SYD Sydney Kingsford Smith

22h 03m1 stop Los Angeles

2:00 pm - 8:19 pmSYD Sydney Kingsford Smith-DEN Denver Intl

24h 19m2 stops Nadi Los Angeles

$936Multiple Airlines

Sat, Feb 6 - Wed, Feb 17

9:20 am - 10:30 amDEN Denver Intl-BNE Brisbane

32h 10m2 stops Los Angeles Nadi

11:25 am - 8:19 pmBNE Brisbane-DEN Denver Intl

25h 54m2 stops Nadi Los Angeles

$966Multiple Airlines

Wed, Feb 17 - Wed, Feb 24

3:45 pm - 8:45 amDEN Denver Intl-SYD Sydney Kingsford Smith

25h 00m2 stops Los Angeles Auckland Intl

9:55 am - 11:05 pmSYD Sydney Kingsford Smith-DEN Denver Intl

29h 10m2 stops Auckland Intl Los Angeles

$1,193Air New Zealand

Mon, May 3 - Mon, May 24

11:36 am - 8:35 amDEN Denver Intl-SYD Sydney Kingsford Smith

26h 59m2 stops Los Angeles Auckland Intl

9:55 am - 6:05 pmSYD Sydney Kingsford Smith-DEN Denver Intl

25h 10m2 stops Auckland Intl San Francisco

$1,197Air New Zealand

Mon, Feb 22 - Tue, Mar 16

1:42 pm - 9:00 amDEN Denver Intl-SYD Sydney Kingsford Smith

26h 18m1 stop Los Angeles

11:20 am - 1:11 pmSYD Sydney Kingsford Smith-DEN Denver Intl

18h 51m1 stop Los Angeles

$1,308Qantas Airways

Tue, Mar 16 - Sat, Mar 27

12:15 pm - 9:00 amDEN Denver Intl-SYD Sydney Kingsford Smith

26h 45m1 stop Los Angeles

8:55 am - 10:05 pmSYD Sydney Kingsford Smith-DEN Denver Intl

31h 10m2 stops Auckland Intl Los Angeles

$1,366Qantas Airways

Mon, Nov 30 - Mon, Dec 7

12:00 pm - 6:50 amDEN Denver Intl-SYD Sydney Kingsford Smith

24h 50m1 stop Los Angeles

10:40 am - 12:55 pmSYD Sydney Kingsford Smith-DEN Denver Intl

20h 15m1 stop Los Angeles

$1,599Delta

Sun, Feb 7 - Wed, Feb 17

12:52 pm - 8:30 amDEN Denver Intl-SYD Sydney Kingsford Smith

25h 38m1 stop Los Angeles

10:40 am - 12:01 pmSYD Sydney Kingsford Smith-DEN Denver Intl

19h 21m1 stop Los Angeles

$1,599Delta

Sun, Nov 15 - Mon, Nov 30

5:57 pm - 9:20 amDEN Denver Intl-SYD Sydney Kingsford Smith

21h 23m1 stop San Francisco

11:20 am - 6:06 pmSYD Sydney Kingsford Smith-DEN Denver Intl

24h 46m1 stop Los Angeles

$1,698United Airlines

Mon, Feb 15 - Tue, Feb 23

7:20 pm - 9:20 amDEN Denver Intl-SYD Sydney Kingsford Smith

20h 00m1 stop San Francisco

11:20 am - 2:10 pmSYD Sydney Kingsford Smith-DEN Denver Intl

20h 50m1 stop Los Angeles

$1,698United Airlines

Wed, Feb 3 - Mon, Feb 22

Cheap last minute flights

Enter your travel dates to find the best prices.

9:50 am - 8:55 amDEN Denver Intl-MEL Melbourne

29h 05m2 stops Los Angeles Auckland Intl

12:10 pm - 5:56 pmMEL Melbourne-DEN Denver Intl

23h 46m2 stops Auckland Intl Los Angeles

$1,369Air New Zealand

Fri, Nov 6 - Fri, Nov 13

2:14 pm - 9:00 amDEN Denver Intl-SYD Sydney Kingsford Smith

24h 46m2 stops Phoenix Sky Harbor Intl Los Angeles

11:15 am - 9:43 amSYD Sydney Kingsford Smith-DEN Denver Intl

40h 28m2 stops Los Angeles Las Vegas Harry Reid Intl

$1,405Multiple Airlines

Sun, Nov 8 - Mon, Nov 23

9:10 am - 9:00 amDEN Denver Intl-SYD Sydney Kingsford Smith

29h 50m1 stop Los Angeles

11:10 am - 9:43 amSYD Sydney Kingsford Smith-DEN Denver Intl

40h 33m2 stops Los Angeles Las Vegas Harry Reid Intl

$1,413Multiple Airlines

Sun, Nov 8 - Mon, Nov 23

9:50 am - 9:30 amDEN Denver Intl-MEL Melbourne

29h 40m1 stop Los Angeles

10:20 am - 4:12 pmMEL Melbourne-DEN Denver Intl

23h 52m2 stops Auckland Intl Los Angeles

$1,572Air New Zealand

Fri, Nov 6 - Fri, Nov 13

7:25 pm - 10:55 amDEN Denver Intl-ADL Adelaide

46h 00m2 stops Houston George Bush Intcntl Auckland Intl

7:10 pm - 12:17 pmADL Adelaide-DEN Denver Intl

34h 37m2 stops Sydney Kingsford Smith Los Angeles

$1,750Air New Zealand

Thu, Nov 5 - Tue, Nov 10

9:18 pm - 7:30 amDEN Denver Intl-BNE Brisbane

41h 12m1 stop San Francisco

7:05 am - 4:36 pmBNE Brisbane-DEN Denver Intl

26h 31m2 stops Sydney Kingsford Smith San Francisco

$2,031United Airlines

Sun, Nov 8 - Mon, Dec 7

9:18 pm - 7:30 amDEN Denver Intl-BNE Brisbane

41h 12m1 stop San Francisco

7:35 am - 12:09 pmBNE Brisbane-DEN Denver Intl

21h 34m2 stops Sydney Kingsford Smith San Francisco

$2,081United Airlines

Sun, Nov 8 - Mon, Dec 7

6:46 pm - 9:00 amDEN Denver Intl-SYD Sydney Kingsford Smith

20h 14m1 stop Los Angeles

11:10 am - 11:46 amSYD Sydney Kingsford Smith-DEN Denver Intl

18h 36m1 stop Los Angeles

$2,347Qantas Airways

Mon, Nov 9 - Fri, Nov 13

7:09 am - 5:50 amDEN Denver Intl-BNE Brisbane

29h 41m1 stop Los Angeles

1:10 pm - 10:05 pmBNE Brisbane-DEN Denver Intl

25h 55m1 stop Los Angeles

$2,353Qantas Airways

Sun, Nov 8 - Thu, Nov 12

7:00 pm - 8:45 amDEN Denver Intl-BNE Brisbane

20h 45m1 stop Vancouver Intl

10:45 am - 12:43 pmBNE Brisbane-DEN Denver Intl

18h 58m1 stop Vancouver Intl

$3,090Air Canada

Sun, Nov 8 - Mon, Dec 7

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Air New Zealand flights from Colorado to Australia

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

Air New Zealand

May 3

DEN3:45 pmDenver Intl

25h 00m

2 stops

SYD8:45 amSydney Kingsford Smith

May 24

SYD9:55 amSydney Kingsford Smith

29h 10m

2 stops

DEN11:05 pmDenver Intl

$1,193

Air New Zealand

Feb 22

DEN11:36 amDenver Intl

26h 59m

2 stops

SYD8:35 amSydney Kingsford Smith

Mar 16

SYD9:55 amSydney Kingsford Smith

25h 10m

2 stops

DEN6:05 pmDenver Intl

$1,197

Air New Zealand

Feb 1

DEN11:31 amDenver Intl

27h 04m

2 stops

SYD8:35 amSydney Kingsford Smith

Feb 17

SYD2:05 pmSydney Kingsford Smith

22h 01m

2 stops

DEN6:06 pmDenver Intl

$1,200

Delta flights from Colorado to Australia

Our best Delta deals on Colorado to Australia flight tickets

Delta

Nov 15

DEN12:52 pmDenver Intl

25h 38m

1 stop

SYD8:30 amSydney Kingsford Smith

Nov 30

SYD10:40 amSydney Kingsford Smith

19h 21m

1 stop

DEN12:01 pmDenver Intl

$1,599

Delta

Nov 17

DEN5:25 amDenver Intl

33h 05m

2 stops

SYD8:30 amSydney Kingsford Smith

Dec 1

SYD10:40 amSydney Kingsford Smith

19h 17m

1 stop

DEN11:57 amDenver Intl

$1,604

Delta

Nov 18

DEN7:56 pmDenver Intl

18h 34m

1 stop

SYD8:30 amSydney Kingsford Smith

Nov 28

SYD10:40 amSydney Kingsford Smith

19h 44m

1 stop

DEN12:24 pmDenver Intl

$1,649

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sat 2/6

2:22 pm-6:25 am

1 stop22h 03m

Sydney Kingsford Smith

Wed 2/17

2:00 pm-8:19 pm

2 stops24h 19m

$936

DenverBrisbane

DEN Denver Intl - BNE Brisbane

DENBNE

Denver Intl

Wed 2/17

9:20 am-10:30 am

2 stops32h 10m

Brisbane

Wed 2/24

11:25 am-8:19 pm

2 stops25h 54m

$966

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 5/3

3:45 pm-8:45 am

2 stops25h 00m

Sydney Kingsford Smith

Mon 5/24

9:55 am-11:05 pm

2 stops29h 10m

$1,193

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 2/22

11:36 am-8:35 am

2 stops26h 59m

Sydney Kingsford Smith

Tue 3/16

9:55 am-6:05 pm

2 stops25h 10m

$1,197

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Tue 3/16

1:42 pm-9:00 am

1 stop26h 18m

Sydney Kingsford Smith

Sat 3/27

11:20 am-1:11 pm

1 stop18h 51m

$1,308

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 11/30

12:15 pm-9:00 am

1 stop26h 45m

Sydney Kingsford Smith

Mon 12/7

8:55 am-10:05 pm

2 stops31h 10m

$1,366

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sun 2/7

12:00 pm-6:50 am

1 stop24h 50m

Sydney Kingsford Smith

Wed 2/17

10:40 am-12:55 pm

1 stop20h 15m

$1,599

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sun 11/15

12:52 pm-8:30 am

1 stop25h 38m

Sydney Kingsford Smith

Mon 11/30

10:40 am-12:01 pm

1 stop19h 21m

$1,599

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 2/15

5:57 pm-9:20 am

1 stop21h 23m

Sydney Kingsford Smith

Tue 2/23

11:20 am-6:06 pm

1 stop24h 46m

$1,698

Quickest round-trip

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Wed 2/3

7:20 pm-9:20 am

1 stop20h 00m

Sydney Kingsford Smith

Mon 2/22

11:20 am-2:10 pm

1 stop20h 50m

$1,698

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 $1,154. If you aren’t able to travel during the month of April, then book flights to Australia from Colorado during June instead. Flights to Australia in June, while not as cheap as those in April, still average around $1,185.

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 $1,392 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 $1,060 on momondo.

Cheap Colorado to Australia flight deals and tips

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

Best Price Found	$498
Fastest flight time	19h 20m
Direct flights	None

The best one-way flight to Australia from Colorado in the past 72 hours is $498. The best round-trip flight deal from Colorado to Australia found on momondo in the last 72 hours is $936.

The fastest flight from Colorado to Australia takes 19h 20m

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

Search flight deals

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 November 2026, there are 7 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 8,698 reviews	Search Delta flights
Fiji Airways	PriceFrom $682	Free Cancellation	Rating 8.0 262 reviews	Search Fiji Airways flights
Air Canada	PriceFrom $827	Free Cancellation	Rating 7.1 11,861 reviews	Search Air Canada flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.3 10,461 reviews	Search United Airlines flights
American Airlines	PriceFrom $895	Free Cancellation	Rating 7.0 12,228 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $958	Free Cancellation	Rating 7.5 1,122 reviews	Search Qantas Airways flights
Air New Zealand	PriceFrom $1,033	Free Cancellation	Rating 8.0 682 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.