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

Qantas Airways, American Airlines, and Air Canada are the most popular carriers operating from Colorado to Australia

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 30% 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.

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 07m on average. Another popular route from Colorado to Australia is flying from Aspen to Sydney, which will take roughly 20h 55m. Keep in mind that layovers or delays could extend your travel time.

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 February 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.

$381 Cheap Flights from Colorado to Australia in 2025

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Find the cheapest flights from Colorado to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

These are some of the best round-trip flight deals from Colorado to Australia that have been recently found on momondo from popular airlines, departing in the coming months.

12:58 pm - 7:05 amDEN-SYD

26h 07m1 stop

9:10 am - 3:55 pmSYD-DEN

22h 45m1 stop

$808Qantas Airways

Find Deal

Tue, May 27 - Tue, Jun 3

8:19 pm - 6:40 amDEN-MEL

42h 21m1 stop

9:40 am - 7:49 pmMEL-DEN

26h 09m1 stop

$810Qantas Airways

Find Deal

Fri, Apr 11 - Sat, Apr 26

1:22 pm - 5:00 amDEN-BNE

23h 38m1 stop

10:00 pm - 7:30 pmBNE-DEN

37h 30m1 stop

$819American Airlines

Find Deal

Thu, Mar 13 - Thu, Mar 20

1:14 pm - 9:30 amDEN-MEL

26h 16m1 stop

12:00 pm - 7:30 pmMEL-DEN

24h 30m1 stop

$823American Airlines

Find Deal

Sat, Mar 8 - Sat, Mar 15

3:50 pm - 10:25 amDEN-SYD

24h 35m2 stops

11:50 am - 7:38 pmSYD-DEN

23h 48m2 stops

$829Air New Zealand

Find Deal

Tue, Feb 25 - Tue, May 6

3:40 pm - 10:25 amDEN-SYD

25h 45m2 stops

1:55 pm - 6:18 pmSYD-DEN

21h 23m2 stops

$834Air New Zealand

Find Deal

Fri, Mar 14 - Thu, Mar 20

12:38 pm - 9:00 amDEN-SYD

26h 22m2 stops

11:15 am - 7:30 pmSYD-DEN

25h 15m1 stop

$836Alaska Airlines

Find Deal

Tue, Mar 4 - Fri, Mar 14

8:20 pm - 7:05 amDEN-SYD

18h 45m1 stop

9:10 am - 11:22 amSYD-DEN

18h 12m1 stop

$857Alaska Airlines

Find Deal

Tue, May 27 - Thu, Jun 5

2:55 pm - 6:55 amASE-SYD

24h 00m2 stops

9:30 am - 7:56 pmSYD-ASE

26h 26m2 stops

$877United Airlines

Find Deal

Fri, Jun 6 - Tue, Jun 17

8:05 am - 7:00 amASE-SYD

30h 55m1 stop

10:20 am - 7:41 pmSYD-ASE

25h 21m1 stop

$879United Airlines

Find Deal

Fri, Jun 6 - Tue, Jun 17

Qantas Airways flights from Colorado to Australia

Our best Qantas Airways deals on Colorado to Australia flight tickets

Qantas Airways

May 27

DEN12:58 pmDenver Intl

26h 07m

1 stop

SYD7:05 amSydney Kingsford Smith

Jun 3

SYD9:10 amSydney Kingsford Smith

22h 45m

1 stop

DEN3:55 pmDenver Intl

$808

Find similar

Qantas Airways

Apr 11

DEN8:19 pmDenver Intl

42h 21m

1 stop

MEL6:40 amMelbourne

Apr 26

MEL9:40 amMelbourne

26h 09m

1 stop

DEN7:49 pmDenver Intl

$810

Find similar

Qantas Airways

Apr 18

DEN1:18 pmDenver Intl

25h 17m

1 stop

SYD6:35 amSydney Kingsford Smith

Apr 30

SYD9:10 amSydney Kingsford Smith

19h 36m

1 stop

DEN12:46 pmDenver Intl

$811

Find similar

Delta flights from Colorado to Australia

Our best Delta deals on Colorado to Australia flight tickets

Delta

Jun 6

ASE12:00 pmAspen Pitkin County

26h 35m

1 stop

SYD6:35 amSydney Kingsford Smith

Jun 17

SYD9:25 amSydney Kingsford Smith

25h 13m

1 stop

ASE6:38 pmAspen Pitkin County

$924

Find similar

Delta

May 11

DEN7:15 pmDenver Intl

19h 20m

1 stop

SYD6:35 amSydney Kingsford Smith

Jun 8

SYD9:25 amSydney Kingsford Smith

24h 48m

1 stop

DEN6:13 pmDenver Intl

$931

Find similar

Delta

May 11

DEN3:40 pmDenver Intl

22h 55m

2 stops

SYD6:35 amSydney Kingsford Smith

Jun 8

SYD9:25 amSydney Kingsford Smith

25h 50m

2 stops

DEN7:15 pmDenver Intl

$935

Find similar

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 $881. If you aren’t able to travel during the month of April, then book flights to Australia from Colorado during March instead. Flights to Australia in March, while not as cheap as those in April, still average around $907.

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 21 weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,173 when searching 21 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 $918 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	$381
Fastest flight time	18h 42m
Direct flights	None
Airports in Australia	6 airports

The best one-way flight to Australia from Colorado in the past 72 hours is $381. The best round-trip flight deal from Colorado to Australia found on momondo in the last 72 hours is $808.

The fastest flight from Colorado to Australia takes 18h 42m

There are no direct flights from Colorado to Australia. Popular non-direct routes for this connection are Denver Intl Airport - Melbourne Airport, Denver Intl Airport - Brisbane Airport and Denver Intl Airport - Sydney Kingsford Smith Airport.

There are 6 airports near Australia: Melbourne Avalon (AVV), Canberra (CBR), Melbourne (MEL), Hobart (HBA), Brisbane (BNE), Sydney Kingsford Smith (SYD)

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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 February 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
American Airlines	PriceFrom $686	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $696	Free Cancellation	Rating 7.4 819 reviews	Search Qantas Airways flights
Alaska Airlines	PriceFrom $834	Free Cancellation	Rating 8.0 9,695 reviews	Search Alaska Airlines flights
Delta	PriceFrom $848	Free Cancellation	Rating 8.0 8,333 reviews	Search Delta flights
Air Canada	PriceFrom $910	Free Cancellation	Rating 7.0 8,708 reviews	Search Air Canada flights
United Airlines	PriceFrom $915	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights
Air New Zealand	PriceFrom $1,220	Free Cancellation	Rating 7.9 467 reviews	Search Air New Zealand flights
Singapore Airlines	PriceFrom $1,529	Free Cancellation	Rating 8.1 1,310 reviews	Search Singapore Airlines 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.