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 20m on average. Another popular route from Colorado to Sydney is flying from Colorado Springs to Sydney, which will take roughly 23h 35m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Sydney?

Qantas Airways, American Airlines and United Airlines 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 36% 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 December 2025, 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.

$508 Cheap Flights from Colorado to Sydney in 2025/26

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7:10 am - 12:35 pm

DEN

SYD

35h 25m2 stops

2:00 pm - 11:40 pm

SYD

DEN

27h 40m2 stops

$876Multiple Airlines

Sun, Feb 15 - Sun, Mar 8

12:00 pm - 10:05 pm

DEN

SYD

40h 05m2 stops

2:00 pm - 11:10 pm

SYD

DEN

27h 10m2 stops

$888Multiple Airlines

Sat, Jan 31 - Sun, Feb 15

6:10 am - 12:45 pm

DEN

SYD

37h 35m2 stops

1:15 pm - 12:40 am

SYD

DEN

27h 25m2 stops

$913Multiple Airlines

Thu, Apr 2 - Tue, Apr 7

11:42 am - 9:35 am

DEN

SYD

27h 53m2 stops

10:20 am - 12:37 pm

SYD

DEN

19h 17m1 stop

$953Air Canada

Tue, Mar 3 - Tue, Mar 10

11:42 am - 9:35 am

DEN

SYD

27h 53m2 stops

10:20 am - 12:37 pm

SYD

DEN

19h 17m1 stop

$958Air Canada

Tue, Mar 3 - Tue, Mar 10

5:33 pm - 9:05 am

ASE

SYD

21h 32m1 stop

11:20 am - 7:48 pm

SYD

ASE

26h 28m1 stop

$1,352United Airlines

Wed, Feb 18 - Sun, Feb 22

4:59 pm - 9:15 am

ASE

SYD

22h 16m2 stops

11:50 am - 2:42 pm

SYD

ASE

20h 52m1 stop

$1,356United Airlines

Wed, Feb 18 - Sun, Feb 22

12:38 pm - 11:55 am

COS

SYD

29h 17m2 stops

8:55 am - 2:09 pm

SYD

COS

47h 14m2 stops

$1,423Qantas Airways

Tue, Dec 30 - Wed, Jan 7

12:38 pm - 6:55 am

COS

SYD

24h 17m1 stop

8:55 am - 2:09 pm

SYD

COS

47h 14m2 stops

$1,862Qantas Airways

Tue, Dec 30 - Wed, Jan 7

3:05 pm - 6:55 am

COS

SYD

45h 50m3 stops

4:20 pm - 4:01 pm

SYD

COS

41h 41m3 stops

$3,830British Airways

Sat, Feb 7 - Wed, Feb 11

Air Canada flights from Colorado to Sydney

Our best Air Canada deals on Colorado to Sydney flight tickets

Air Canada

Mar 3

DEN11:42 amDenver Intl

27h 53m

2 stops

SYD9:35 amSydney Kingsford Smith

Mar 10

SYD10:20 amSydney Kingsford Smith

19h 17m

1 stop

DEN12:37 pmDenver Intl

$953

Find similar

Air Canada

Mar 3

DEN11:42 amDenver Intl

27h 53m

2 stops

SYD9:35 amSydney Kingsford Smith

Mar 10

SYD10:20 amSydney Kingsford Smith

19h 17m

1 stop

DEN12:37 pmDenver Intl

$958

Find similar

Air Canada

Apr 14

DEN11:19 amDenver Intl

28h 01m

2 stops

SYD7:20 amSydney Kingsford Smith

Apr 21

SYD7:00 amSydney Kingsford Smith

21h 38m

2 stops

DEN12:38 pmDenver Intl

$967

Find similar

United Airlines flights from Colorado to Sydney

Our best United Airlines deals on Colorado to Sydney flight tickets

United Airlines

Feb 18

ASE5:33 pmAspen Pitkin County

21h 32m

1 stop

SYD9:05 amSydney Kingsford Smith

Feb 22

SYD12:10 pmSydney Kingsford Smith

19h 00m

1 stop

ASE1:10 pmAspen Pitkin County

$1,352

Find similar

United Airlines

Feb 18

ASE3:29 pmAspen Pitkin County

23h 36m

2 stops

SYD9:05 amSydney Kingsford Smith

Feb 22

SYD12:10 pmSydney Kingsford Smith

19h 00m

1 stop

ASE1:10 pmAspen Pitkin County

$1,357

Find similar

United Airlines

Feb 5

ASE1:54 pmAspen Pitkin County

25h 11m

1 stop

SYD9:05 amSydney Kingsford Smith

Feb 9

SYD11:50 amSydney Kingsford Smith

20h 27m

1 stop

ASE2:17 pmAspen Pitkin County

$1,403

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/15

7:10 am-12:35 pm

2 stops35h 25m

Sydney Kingsford Smith

Sun 3/8

2:00 pm-11:40 pm

2 stops27h 40m

$876

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 1/31

12:00 pm-10:05 pm

2 stops40h 05m

Sydney Kingsford Smith

Sun 2/15

2:00 pm-11:10 pm

2 stops27h 10m

$888

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 4/2

6:10 am-12:45 pm

2 stops37h 35m

Sydney Kingsford Smith

Tue 4/7

1:15 pm-12:40 am

2 stops27h 25m

$913

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 3/3

11:42 am-9:35 am

2 stops27h 53m

Sydney Kingsford Smith

Tue 3/10

10:20 am-12:37 pm

1 stop19h 17m

$953

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 3/3

11:42 am-9:35 am

2 stops27h 53m

Sydney Kingsford Smith

Tue 3/10

10:20 am-12:37 pm

1 stop19h 17m

$958

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Wed 2/18

5:33 pm-9:05 am

1 stop21h 32m

Sydney Kingsford Smith

Sun 2/22

11:20 am-7:48 pm

1 stop26h 28m

$1,352

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Wed 2/18

4:59 pm-9:15 am

2 stops22h 16m

Sydney Kingsford Smith

Sun 2/22

11:50 am-2:42 pm

1 stop20h 52m

$1,356

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Tue 12/30

12:38 pm-11:55 am

2 stops29h 17m

Sydney Kingsford Smith

Wed 1/7

8:55 am-2:09 pm

2 stops47h 14m

$1,423

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Tue 12/30

12:38 pm-6:55 am

1 stop24h 17m

Sydney Kingsford Smith

Wed 1/7

8:55 am-2:09 pm

2 stops47h 14m

$1,862

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 2/7

3:05 pm-6:55 am

3 stops45h 50m

Sydney Kingsford Smith

Wed 2/11

4:20 pm-4:01 pm

3 stops41h 41m

$3,830

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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

Airlines

Other information

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 $864. If you are unable to visit Sydney during the month of April, then departing from Colorado during the month May is also very affordable. Most momondo users find prices during this month for around $865.

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

The cheapest day to depart from Colorado to Sydney is on a Tuesday when prices can be found for as low as $1,197. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,362.

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

According to our data, the cheapest time of day to fly to Sydney is at noon. momondo users have found flights departing from Colorado to Sydney at noon for as low as $933. 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 Sydney are more costly in the evening, with an average ticket price of $1,292. 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 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 $1,074 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 $990 on momondo.

Can stopping save me money on Colorado to Sydney flights?

You could potentially save up to 16% 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 20m
Direct flights	None

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

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 December 2025, 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
Alaska Airlines	PriceFrom $745	Free Cancellation	Rating 8.0 11,409 reviews	Search Alaska Airlines flights
Delta	PriceFrom $786	Free Cancellation	Rating 7.9 8,013 reviews	Search Delta flights
Fiji Airways	PriceFrom $791	Free Cancellation	Rating 8.1 210 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $804	Free Cancellation	Rating 7.5 948 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $827	Free Cancellation	Rating 7.2 11,044 reviews	Search American Airlines flights
Air New Zealand	PriceFrom $834	Free Cancellation	Rating 8.0 551 reviews	Search Air New Zealand flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.4 9,075 reviews	Search United Airlines flights
Air Canada	PriceFrom $980	Free Cancellation	Rating 7.1 10,512 reviews	Search Air Canada flights

Parramatta

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Katoomba

Wollongong

Randwick

Coogee

Manly

Penrith

Cronulla

Lithgow

Leura

Charlestown

Terrigal

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 $529

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 2/3. 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

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

What is the cheapest month to fly to Sydney?

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

The cheapest day to depart from Colorado to Sydney is on a Tuesday when prices can be found for as low as $1,197. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,362.

What is the cheapest time of day to depart on your flight 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 16% 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.

Find better results for your trip to Australia

Airports servicing New South Wales