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

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

Which 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 65% of people opting to fly with this airline when travelling to Australia. Keep in mind that there are 3 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?

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 19h 14m on average. If you fly from Aspen (another popular airport in Colorado) to Sydney, then the average flight time is 26h 29m.

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 September 2025, there are 3 operators 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.

$759 Cheap Flights from Colorado to Australia in 2025/26

1 adult

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Find the cheapest flights from Colorado to Australia

Round-trip

One-way

Last minute

Cheap return flights

20:02 - 19:45DEN-SYD

30h 43m2 stops

21:40 - 17:50SYD-DEN

38h 10m2 stops

$1,539Alaska Airlines

Find Deal

Tue, 28 Oct - Thu, 13 Nov

12:59 - 08:00DEN-MEL

25h 01m1 stop

10:10 - 11:32MEL-DEN

19h 22m1 stop

$1,550Delta

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Mon, 12 Jan - Wed, 28 Jan

06:30 - 08:45DEN-SYD

32h 15m2 stops

13:55 - 00:57SYD-DEN

29h 02m2 stops

$1,563Multiple Airlines

Find Deal

Mon, 3 Nov - Mon, 10 Nov

11:45 - 12:40DEN-SYD

31h 55m2 stops

13:55 - 00:57SYD-DEN

29h 02m2 stops

$1,618Multiple Airlines

Find Deal

Tue, 28 Oct - Mon, 10 Nov

15:02 - 19:45DEN-SYD

35h 43m2 stops

21:40 - 11:34SYD-DEN

30h 54m2 stops

$1,660Hawaiian Airlines

Find Deal

Fri, 24 Oct - Fri, 31 Oct

16:05 - 09:55DEN-BNE

24h 50m2 stops

11:10 - 17:58BNE-DEN

23h 48m2 stops

$1,762Air New Zealand

Find Deal

Sun, 2 Nov - Wed, 19 Nov

16:05 - 10:30DEN-SYD

24h 25m2 stops

11:45 - 17:58SYD-DEN

24h 13m2 stops

$1,765Air New Zealand

Find Deal

Wed, 12 Nov - Wed, 26 Nov

12:35 - 19:45DEN-SYD

37h 10m2 stops

21:40 - 11:39SYD-DEN

31h 59m2 stops

$1,777Hawaiian Airlines

Find Deal

Fri, 6 Feb - Sun, 15 Feb

13:00 - 21:50DEN-SYD

38h 50m2 stops

14:10 - 20:02SYD-DEN

23h 52m2 stops

$1,785Fiji Airways

Find Deal

Sat, 21 Feb - Sat, 28 Feb

13:00 - 12:30DEN-SYD

29h 30m2 stops

14:10 - 20:02SYD-DEN

23h 52m2 stops

$1,788Fiji Airways

Find Deal

Wed, 4 Feb - Sat, 21 Feb

Hawaiian Airlines flights from Colorado to Australia

Our best Hawaiian Airlines deals on Colorado to Australia flight tickets

Hawaiian Airlines

24 Oct

DEN15:02Denver Intl

35h 43m

2 stops

SYD19:45Sydney Kingsford Smith

31 Oct

SYD21:40Sydney Kingsford Smith

30h 54m

2 stops

DEN11:34Denver Intl

$1,660

Find similar

Hawaiian Airlines

6 Feb

DEN12:35Denver Intl

37h 10m

2 stops

SYD19:45Sydney Kingsford Smith

15 Feb

SYD21:40Sydney Kingsford Smith

31h 59m

2 stops

DEN11:39Denver Intl

$1,777

Find similar

Hawaiian Airlines

3 Oct

DEN15:02Denver Intl

35h 43m

2 stops

SYD18:45Sydney Kingsford Smith

17 Oct

SYD21:40Sydney Kingsford Smith

33h 20m

2 stops

DEN14:00Denver Intl

$2,100

Find similar

Alaska Airlines flights from Colorado to Australia

Our best Alaska Airlines deals on Colorado to Australia flight tickets

Alaska Airlines

28 Oct

DEN20:02Denver Intl

30h 43m

2 stops

SYD19:45Sydney Kingsford Smith

13 Nov

SYD21:40Sydney Kingsford Smith

38h 10m

2 stops

DEN17:50Denver Intl

$1,539

Find similar

Alaska Airlines

24 Oct

DEN18:20Denver Intl

32h 25m

2 stops

SYD19:45Sydney Kingsford Smith

31 Oct

SYD21:40Sydney Kingsford Smith

31h 47m

1 stop

DEN12:27Denver Intl

$1,554

Find similar

Alaska Airlines

31 Oct

DEN13:23Denver Intl

37h 22m

2 stops

SYD19:45Sydney Kingsford Smith

13 Nov

SYD21:40Sydney Kingsford Smith

38h 10m

2 stops

DEN17:50Denver Intl

$1,565

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 28/10

20:02-19:45

2 stops30h 43m

Sydney Kingsford Smith

Thu 13/11

21:40-17:50

2 stops38h 10m

$1,539

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Mon 12/1

12:59-08:00

1 stop25h 01m

Melbourne

Wed 28/1

10:10-11:32

1 stop19h 22m

$1,550

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 3/11

06:30-08:45

2 stops32h 15m

Sydney Kingsford Smith

Mon 10/11

13:55-00:57

2 stops29h 02m

$1,563

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 28/10

11:45-12:40

2 stops31h 55m

Sydney Kingsford Smith

Mon 10/11

13:55-00:57

2 stops29h 02m

$1,618

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 24/10

15:02-19:45

2 stops35h 43m

Sydney Kingsford Smith

Fri 31/10

21:40-11:34

2 stops30h 54m

$1,660

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Sun 2/11

16:05-09:55

2 stops24h 50m

Brisbane

Wed 19/11

11:10-17:58

2 stops23h 48m

$1,762

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 12/11

16:05-10:30

2 stops24h 25m

Sydney Kingsford Smith

Wed 26/11

11:45-17:58

2 stops24h 13m

$1,765

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 6/2

12:35-19:45

2 stops37h 10m

Sydney Kingsford Smith

Sun 15/2

21:40-11:39

2 stops31h 59m

$1,777

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 21/2

13:00-21:50

2 stops38h 50m

Sydney Kingsford Smith

Sat 28/2

14:10-20:02

2 stops23h 52m

$1,785

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 4/2

13:00-12:30

2 stops29h 30m

Sydney Kingsford Smith

Sat 21/2

14:10-20:02

2 stops23h 52m

$1,788

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, April 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 $1,320. If you don’t want to visit Australia in April, then you should wait until May to fly from Colorado, when ticket prices are also cheap, with an average price of $1,324.

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

On average, the least expensive day to fly to Australia from Colorado is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,725. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Colorado to Australia on a Tuesday will generally be more expensive and average around $2,343. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Australia is at midday. momondo users have found flights departing from Colorado to Australia at midday for as low as $1,420. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Australia are more costly in the evening, with an average ticket price of $2,116. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,613 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 $1,400 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

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 are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado to Australia?
As of September 2025, there are 3 operators 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
American Airlines	PriceFrom $302	Free cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $468	Free cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Qantas Airways	PriceFrom $1,246	Free cancellation	Rating 7.5 907 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.