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

United Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Colorado to Australia

How long is the flight from Colorado to Australia?

The flight from Colorado to Australia depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Denver (a popular airport in Colorado) to Sydney (the most popular airport in Australia), then the flight time is 23h 20m on average. If you fly from Colorado Springs (another popular airport in Colorado) to Sydney, then the average flight time is 25h 52m.

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

Prices for flights from Colorado to Australia are refreshed on a daily basis.

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

As of June 2026, there is 1 operator available to choose from for flights from Colorado to Australia.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify 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 required travel and health documents for your Australia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$623 Cheap Flights from Colorado to Australia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Australia

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

07:00 - 12:00

DEN

MEL

37h 00m

2 stops

13:30 - 00:42

MEL

DEN

27h 12m

2 stops

$1,238Multiple Airlines

Thu, 6 Aug - Thu, 13 Aug

06:30 - 10:25

DEN

BNE

35h 55m

2 stops

11:25 - 01:25

BNE

DEN

30h 00m

2 stops

$1,304Multiple Airlines

Tue, 13 Oct - Sun, 1 Nov

13:30 - 07:00

COS

SYD

25h 30m

2 stops

10:20 - 18:47

SYD

COS

24h 27m

2 stops

$1,727United Airlines

Wed, 5 Aug - Wed, 12 Aug

16:04 - 09:55

DEN

BNE

25h 51m

2 stops

08:20 - 17:56

BNE

DEN

26h 36m

2 stops

$1,757Air New Zealand

Mon, 26 Oct - Mon, 2 Nov

12:20 - 10:55

COS

MEL

30h 35m

2 stops

08:35 - 21:27

MEL

COS

28h 52m

2 stops

$1,763Air New Zealand

Wed, 12 Aug - Wed, 19 Aug

09:40 - 06:55

ASE

SYD

29h 15m

1 stop

10:20 - 19:52

SYD

ASE

25h 32m

1 stop

$1,863United Airlines

Thu, 13 Aug - Sat, 22 Aug

09:10 - 11:50

DEN

ADL

35h 10m

2 stops

21:20 - 16:58

ADL

DEN

35h 08m

2 stops

$2,254Air Canada

Mon, 14 Sep - Sun, 27 Sep

18:56 - 18:45

DEN

PER

57h 49m

2 stops

22:45 - 22:38

PER

DEN

38h 53m

2 stops

$2,420Qatar Airways

Thu, 29 Oct - Mon, 9 Nov

07:05 - 18:45

DEN

PER

45h 40m

2 stops

22:45 - 17:35

PER

DEN

33h 50m

2 stops

$2,467Qatar Airways

Fri, 30 Oct - Thu, 12 Nov

07:00 - 07:20

COS

SYD

32h 20m

3 stops

09:20 - 08:40

SYD

COS

39h 20m

2 stops

$2,746Air Canada

Thu, 13 Aug - Mon, 17 Aug

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

United Airlines flights from Colorado to Australia

Our best United Airlines deals on Colorado to Australia flight tickets

United Airlines

5 Aug

COS13:30Colorado Springs

25h 30m

2 stops

SYD07:00Sydney Kingsford Smith

12 Aug

SYD10:20Sydney Kingsford Smith

24h 27m

2 stops

COS18:47Colorado Springs

$1,727

United Airlines

13 Aug

ASE09:40Aspen Pitkin County

29h 15m

1 stop

SYD06:55Sydney Kingsford Smith

22 Aug

SYD10:20Sydney Kingsford Smith

25h 32m

1 stop

ASE19:52Aspen Pitkin County

$1,863

United Airlines

13 Aug

ASE09:40Aspen Pitkin County

29h 15m

1 stop

SYD06:55Sydney Kingsford Smith

22 Aug

SYD10:20Sydney Kingsford Smith

25h 32m

1 stop

ASE19:52Aspen Pitkin County

$1,864

Qantas Airways flights from Colorado to Australia

Our best Qantas Airways deals on Colorado to Australia flight tickets

Qantas Airways

23 Nov

DEN16:45Denver Intl

29h 05m

2 stops

AVV15:50Melbourne Avalon

13 Jan

AVV06:00Melbourne Avalon

24h 18m

2 stops

DEN12:18Denver Intl

$2,614

Qantas Airways

18 Oct

DEN11:58Denver Intl

33h 12m

2 stops

AVV14:10Melbourne Avalon

31 Oct

AVV16:25Melbourne Avalon

41h 29m

2 stops

DEN16:54Denver Intl

$2,616

Qantas Airways

23 Nov

DEN19:15Denver Intl

24h 50m

2 stops

AVV14:05Melbourne Avalon

13 Jan

AVV06:00Melbourne Avalon

24h 18m

2 stops

DEN12:18Denver Intl

$2,620

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Thu 6/8

07:00-12:00

2 stops37h 00m

Melbourne

Thu 13/8

13:30-00:42

2 stops27h 12m

$1,238

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Tue 13/10

06:30-10:25

2 stops35h 55m

Brisbane

Sun 1/11

11:25-01:25

2 stops30h 00m

$1,304

Fastest return journey

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 5/8

13:30-07:00

2 stops25h 30m

Sydney Kingsford Smith

Wed 12/8

10:20-18:47

2 stops24h 27m

$1,727

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Mon 26/10

16:04-09:55

2 stops25h 51m

Brisbane

Mon 2/11

08:20-17:56

2 stops26h 36m

$1,757

Colorado SpringsMelbourne

COS - MEL

COSMEL

Colorado Springs

Wed 12/8

12:20-10:55

2 stops30h 35m

Melbourne

Wed 19/8

08:35-21:27

2 stops28h 52m

$1,763

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 13/8

09:40-06:55

1 stop29h 15m

Sydney Kingsford Smith

Sat 22/8

10:20-19:52

1 stop25h 32m

$1,863

DenverAdelaide

DEN - ADL

DENADL

Denver Intl

Mon 14/9

09:10-11:50

2 stops35h 10m

Adelaide

Sun 27/9

21:20-16:58

2 stops35h 08m

$2,254

DenverPerth

DEN - PER

DENPER

Denver Intl

Thu 29/10

18:56-18:45

2 stops57h 49m

Perth

Mon 9/11

22:45-22:38

2 stops38h 53m

$2,420

DenverPerth

DEN - PER

DENPER

Denver Intl

Fri 30/10

07:05-18:45

2 stops45h 40m

Perth

Thu 12/11

22:45-17:35

2 stops33h 50m

$2,467

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Thu 13/8

07:00-07:20

3 stops32h 20m

Sydney Kingsford Smith

Mon 17/8

09:20-08:40

2 stops39h 20m

$2,746

Flights are sorted by cheapest return 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?

In general, January is the cheapest month to fly from Colorado to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $104. If you don’t want to visit Australia in January, then you should wait until September to fly from Colorado, when ticket prices are also cheap, with an average price of $106.

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 $1,909 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Colorado for as low as $1,677 on momondo.

Can stopping save me money on Colorado to Australia flights?

You could potentially save up to 23% 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.

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 are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado to Australia?
As of June 2026, there is 1 operator available to choose from for flights from Colorado to Australia.
How old do you have to be to fly from Colorado to Australia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify 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 required travel and health documents for your Australia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable 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 $1,307	Free cancellation	Rating 7.5 1,050 reviews		Search Qantas Airways flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Colorado to Australia. momondo saves you time and could save you money on your trip.

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 you have performed a search for Colorado to Australia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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.