How long does it take to fly to Sydney?

Flight times from Colorado to Sydney vary, but if you’re flying out of Denver and flying into Sydney (one of the most popular routes), then the duration is 19h 30m on average. Another popular route from Colorado to Sydney is flying from Colorado Springs to Sydney, which will take roughly 25h 44m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Sydney?

Qantas Airways, United Airlines and Air Canada are the top three most popular airlines that fly to Sydney from Colorado according to our data. Qantas Airways is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 8 different airlines that fly to Sydney 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 Sydney Kingsford Smith Airport?

Prices for flights from Colorado to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Colorado to Sydney Kingsford Smith Airport?

As of February 2026, there are 8 operators available to choose from for flights from Colorado to Sydney Kingsford Smith Airport.

How old do you have to be to fly from Colorado to Sydney Kingsford Smith Airport?

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 Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport 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 license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$459 Cheap Flights from Colorado to Sydney in 2026

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9:31 pm - 7:25 am

DEN

SYD

39h 54m

1 stop

2:00 pm - 12:30 am

SYD

DEN

27h 30m

2 stops

$856Multiple Airlines

Wed, Mar 4 - Wed, Mar 11

11:56 am - 12:35 pm

DEN

SYD

30h 39m

2 stops

2:00 pm - 12:30 am

SYD

DEN

27h 30m

2 stops

$859Multiple Airlines

Thu, Mar 5 - Thu, Mar 12

9:31 pm - 7:25 am

DEN

SYD

39h 54m

1 stop

2:00 pm - 12:30 am

SYD

DEN

27h 30m

2 stops

$860Multiple Airlines

Wed, Mar 4 - Wed, Mar 11

10:29 pm - 7:25 am

DEN

SYD

39h 56m

1 stop

2:00 pm - 12:30 am

SYD

DEN

27h 30m

2 stops

$863Multiple Airlines

Wed, Mar 11 - Wed, Mar 18

9:31 pm - 7:25 am

DEN

SYD

39h 54m

1 stop

2:00 pm - 12:30 am

SYD

DEN

27h 30m

2 stops

$869Multiple Airlines

Wed, Mar 4 - Wed, Mar 18

4:48 pm - 9:00 am

COS

SYD

23h 12m

2 stops

9:25 pm - 9:50 am

SYD

COS

29h 25m

2 stops

$1,229American Airlines

Sun, Mar 22 - Sun, Mar 29

4:48 pm - 6:55 am

COS

SYD

21h 07m

1 stop

9:25 pm - 9:50 am

SYD

COS

29h 25m

2 stops

$1,230American Airlines

Sun, Mar 22 - Sun, Mar 29

3:25 pm - 8:05 am

COS

SYD

23h 40m

2 stops

11:50 am - 9:44 pm

SYD

COS

26h 54m

1 stop

$1,382United Airlines

Fri, Mar 20 - Fri, Mar 27

6:55 pm - 9:15 am

COS

SYD

21h 20m

2 stops

12:10 pm - 10:02 pm

SYD

COS

26h 52m

2 stops

$1,387United Airlines

Fri, Mar 20 - Fri, Mar 27

4:48 pm - 6:55 am

COS

SYD

21h 07m

1 stop

1:00 pm - 3:58 pm

SYD

COS

19h 58m

1 stop

$2,316Qantas Airways

Sun, Mar 22 - Sun, Mar 29

United Airlines flights from Colorado to Sydney

Our best United Airlines deals on Colorado to Sydney flight tickets

United Airlines

Feb 14

ASE6:39 pmAspen Pitkin County

41h 41m

1 stop

SYD6:20 amSydney Kingsford Smith

Feb 18

SYD11:20 amSydney Kingsford Smith

26h 28m

1 stop

ASE7:48 pmAspen Pitkin County

$1,227

United Airlines

Feb 14

ASE6:39 pmAspen Pitkin County

41h 41m

1 stop

SYD6:20 amSydney Kingsford Smith

Feb 18

SYD11:50 amSydney Kingsford Smith

26h 52m

1 stop

ASE8:42 pmAspen Pitkin County

$1,228

United Airlines

Feb 14

ASE6:39 pmAspen Pitkin County

41h 41m

1 stop

SYD6:20 amSydney Kingsford Smith

Feb 18

SYD11:20 amSydney Kingsford Smith

21h 15m

2 stops

ASE2:35 pmAspen Pitkin County

$1,231

American Airlines flights from Colorado to Sydney

Our best American Airlines deals on Colorado to Sydney flight tickets

American Airlines

Feb 15

DEN12:59 pmDenver Intl

26h 01m

1 stop

SYD9:00 amSydney Kingsford Smith

Mar 2

SYD11:20 amSydney Kingsford Smith

26h 14m

1 stop

DEN7:34 pmDenver Intl

$965

American Airlines

Feb 15

DEN12:59 pmDenver Intl

26h 01m

1 stop

SYD9:00 amSydney Kingsford Smith

Mar 2

SYD11:20 amSydney Kingsford Smith

22h 33m

2 stops

DEN3:53 pmDenver Intl

$969

American Airlines

Mar 22

COS4:48 pmColorado Springs

23h 12m

2 stops

SYD9:00 amSydney Kingsford Smith

Mar 29

SYD9:25 pmSydney Kingsford Smith

29h 25m

2 stops

COS9:50 amColorado Springs

$1,229

Fly from

Fly to

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 3/4

9:31 pm-7:25 am

1 stop39h 54m

Sydney Kingsford Smith

Wed 3/11

2:00 pm-12:30 am

2 stops27h 30m

$856

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 3/5

11:56 am-12:35 pm

2 stops30h 39m

Sydney Kingsford Smith

Thu 3/12

2:00 pm-12:30 am

2 stops27h 30m

$859

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 3/4

9:31 pm-7:25 am

1 stop39h 54m

Sydney Kingsford Smith

Wed 3/11

2:00 pm-12:30 am

2 stops27h 30m

$860

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 3/11

10:29 pm-7:25 am

1 stop39h 56m

Sydney Kingsford Smith

Wed 3/18

2:00 pm-12:30 am

2 stops27h 30m

$863

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 3/4

9:31 pm-7:25 am

1 stop39h 54m

Sydney Kingsford Smith

Wed 3/18

2:00 pm-12:30 am

2 stops27h 30m

$869

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sun 3/22

4:48 pm-9:00 am

2 stops23h 12m

Sydney Kingsford Smith

Sun 3/29

9:25 pm-9:50 am

2 stops29h 25m

$1,229

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sun 3/22

4:48 pm-6:55 am

1 stop21h 07m

Sydney Kingsford Smith

Sun 3/29

9:25 pm-9:50 am

2 stops29h 25m

$1,230

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Fri 3/20

3:25 pm-8:05 am

2 stops23h 40m

Sydney Kingsford Smith

Fri 3/27

11:50 am-9:44 pm

1 stop26h 54m

$1,382

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Fri 3/20

6:55 pm-9:15 am

2 stops21h 20m

Sydney Kingsford Smith

Fri 3/27

12:10 pm-10:02 pm

2 stops26h 52m

$1,387

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sun 3/22

4:48 pm-6:55 am

1 stop21h 07m

Sydney Kingsford Smith

Sun 3/29

1:00 pm-3:58 pm

1 stop19h 58m

$2,316

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Sydney

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

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What is the cheapest month to fly to Sydney?

In general, April is the cheapest month to fly from Colorado to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $866. If you are unable to visit Sydney during the month of April, then departing from Colorado during the month March is also very affordable. Most momondo users find prices during this month for around $905.

How far in advance should I book a flight to Sydney?

You are more likely to see cheaper flights to Sydney from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,139 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Colorado for as low as $1,004 on momondo.

Can stopping save me money on Colorado to Sydney flights?

You could potentially save up to 10% on your flight if you consider stops on a Colorado to Sydney flight.

Cheap Colorado to Sydney flight deals and tips

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

Fastest flight time	19h 30m
Direct flights	None

The fastest flight from Colorado to Sydney takes 19h 30m

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

Search flight deals

When did momondo last update prices for flights from Colorado to Sydney Kingsford Smith Airport?
Prices for flights from Colorado to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado to Sydney Kingsford Smith Airport?
As of February 2026, there are 8 operators available to choose from for flights from Colorado to Sydney Kingsford Smith Airport.
How old do you have to be to fly from Colorado to Sydney Kingsford Smith Airport?
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 Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport 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 license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Colorado to Sydney

Compare and see reviews for airlines that fly from Colorado to Sydney with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $255	Free Cancellation	Rating 7.9 8,163 reviews	Search Delta flights
Fiji Airways	PriceFrom $684	Free Cancellation	Rating 8.0 223 reviews	Search Fiji Airways flights
Alaska Airlines	PriceFrom $745	Free Cancellation	Rating 8.0 11,848 reviews	Search Alaska Airlines flights
Qantas Airways	PriceFrom $800	Free Cancellation	Rating 7.5 987 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $825	Free Cancellation	Rating 7.2 11,247 reviews	Search American Airlines flights
Air New Zealand	PriceFrom $834	Free Cancellation	Rating 8.0 580 reviews	Search Air New Zealand flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.4 9,245 reviews	Search United Airlines flights
Air Canada	PriceFrom $980	Free Cancellation	Rating 7.1 10,697 reviews	Search Air Canada flights

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Coogee

Manly

Lithgow

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Swansea

Why use momondo?

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

Finding the right flight to Sydney from Colorado is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.

Can I find flights from Colorado to Sydney with flexible booking policies on momondo?

Yes. All flights to Sydney from Colorado on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Colorado to Sydney?

momondo helps you find the best flight between Colorado and Sydney by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Colorado to Sydney right now. Can momondo alert me if prices change?

Price alerts on flights to Sydney from Colorado are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Colorado to Sydney from $459

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Sydney departing on 3/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Colorado to Sydney

What is the cheapest month to fly to Sydney?

How far in advance should I book a flight to Sydney?

Can stopping save me money on Colorado to Sydney flights?

You could potentially save up to 10% on your flight if you consider stops on a Colorado to Sydney flight.

What airlines fly to Sydney?

How long does it take to fly to Sydney?

Cheap Colorado to Sydney flight deals and tips

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

Fastest flight time

Direct flights

When did momondo last update prices for flights from Colorado to Sydney Kingsford Smith Airport?

How many operators does momondo search for flights from Colorado to Sydney Kingsford Smith Airport?

How old do you have to be to fly from Colorado to Sydney Kingsford Smith Airport?

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

Best airlines flying from Colorado to Sydney

Compare and see reviews for airlines that fly from Colorado to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

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

Can I find flights from Colorado to Sydney with flexible booking policies on momondo?

How can momondo help me find flights from Colorado to Sydney?

I’m not ready to book a flight from Colorado to Sydney right now. Can momondo alert me if prices change?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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