How long does it take to fly to Sydney?

If you’re flying from a popular airport in Colorado, such as Denver or Colorado Springs, and flying into Sydney, then you can expect flight times to average 19h 24m and 25h 25m, respectively.

What is the cheapest airline that flies from Colorado to Sydney Kingsford Smith?

Delta, United Airlines, and American Airlines are the most popular carriers operating from Colorado to Sydney Kingsford Smith

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 were last updated today.

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

As of May 2026, there is 1 operator 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Sydney Kingsford Smith Airport.

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

The necessary travel and health documents for your Sydney Kingsford Smith Airport 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 licence 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.

$615 Cheap Flights from Colorado to Sydney in 2026

1 adult

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Find the cheapest flights from Colorado to Sydney

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

18:08 - 07:05

DEN

SYD

20h 57m

1 stop

09:10 - 11:01

SYD

DEN

17h 51m

1 stop

$1,389American Airlines

Tue, 2 Jun - Tue, 16 Jun

18:30 - 06:50

DEN

SYD

20h 20m

1 stop

09:15 - 12:19

SYD

DEN

19h 04m

1 stop

$1,393Delta

Wed, 20 May - Mon, 25 May

07:00 - 22:10

DEN

SYD

47h 10m

2 stops

13:15 - 00:40

SYD

DEN

27h 25m

2 stops

$1,396Multiple Airlines

Sun, 23 Aug - Sat, 5 Sep

18:58 - 07:00

ASE

SYD

20h 02m

1 stop

10:20 - 19:57

SYD

ASE

25h 37m

1 stop

$1,736Air New Zealand

Thu, 13 Aug - Sat, 22 Aug

09:40 - 06:55

ASE

SYD

29h 15m

1 stop

09:30 - 13:34

SYD

ASE

20h 04m

1 stop

$1,738Air New Zealand

Thu, 13 Aug - Sat, 22 Aug

15:25 - 07:00

ASE

SYD

23h 35m

2 stops

09:30 - 14:23

SYD

ASE

20h 53m

2 stops

$1,744United Airlines

Thu, 13 Aug - Sat, 22 Aug

15:25 - 07:00

ASE

SYD

23h 35m

2 stops

09:30 - 13:36

SYD

ASE

20h 06m

1 stop

$1,746United Airlines

Thu, 13 Aug - Sat, 22 Aug

07:30 - 10:40

COS

SYD

35h 10m

2 stops

12:00 - 15:01

SYD

COS

19h 01m

1 stop

$3,305Multiple Airlines

Fri, 5 Jun - Thu, 11 Jun

15:51 - 06:55

COS

SYD

23h 04m

1 stop

12:00 - 18:40

SYD

COS

22h 40m

1 stop

$4,217Qantas Airways

Sat, 8 Aug - Wed, 12 Aug

17:13 - 06:55

COS

SYD

21h 42m

1 stop

12:00 - 18:40

SYD

COS

22h 40m

1 stop

$4,220Qantas Airways

Sat, 8 Aug - Wed, 12 Aug

Qantas Airways flights from Colorado to Sydney

Our best Qantas Airways deals on Colorado to Sydney flight tickets

Qantas Airways

24 Aug

DEN11:39Denver Intl

27h 26m

1 stop

SYD07:05Sydney Kingsford Smith

6 Sept

SYD09:10Sydney Kingsford Smith

24h 46m

1 stop

DEN17:56Denver Intl

$1,663

Qantas Airways

16 May

DEN20:35Denver Intl

51h 25m

2 stops

SYD16:00Sydney Kingsford Smith

31 May

SYD09:10Sydney Kingsford Smith

24h 27m

1 stop

DEN17:37Denver Intl

$1,692

Qantas Airways

13 May

DEN12:41Denver Intl

26h 24m

1 stop

SYD07:05Sydney Kingsford Smith

22 May

SYD09:10Sydney Kingsford Smith

17h 51m

1 stop

DEN11:01Denver Intl

$1,732

United Airlines flights from Colorado to Sydney

Our best United Airlines deals on Colorado to Sydney flight tickets

United Airlines

13 Aug

ASE15:25Aspen Pitkin County

23h 35m

2 stops

SYD07:00Sydney Kingsford Smith

22 Aug

SYD09:30Sydney Kingsford Smith

20h 53m

2 stops

ASE14:23Aspen Pitkin County

$1,744

United Airlines

13 Aug

ASE15:25Aspen Pitkin County

23h 35m

2 stops

SYD07:00Sydney Kingsford Smith

22 Aug

SYD09:30Sydney Kingsford Smith

20h 06m

1 stop

ASE13:36Aspen Pitkin County

$1,746

United Airlines

13 Aug

ASE18:58Aspen Pitkin County

20h 02m

1 stop

SYD07:00Sydney Kingsford Smith

22 Aug

SYD10:20Sydney Kingsford Smith

25h 37m

1 stop

ASE19:57Aspen Pitkin County

$1,848

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 2/6

18:08-07:05

1 stop20h 57m

Sydney Kingsford Smith

Tue 16/6

09:10-11:01

1 stop17h 51m

$1,389

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 20/5

18:30-06:50

1 stop20h 20m

Sydney Kingsford Smith

Mon 25/5

09:15-12:19

1 stop19h 04m

$1,393

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 23/8

07:00-22:10

2 stops47h 10m

Sydney Kingsford Smith

Sat 5/9

13:15-00:40

2 stops27h 25m

$1,396

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 13/8

18:58-07:00

1 stop20h 02m

Sydney Kingsford Smith

Sat 22/8

10:20-19:57

1 stop25h 37m

$1,736

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 13/8

09:40-06:55

1 stop29h 15m

Sydney Kingsford Smith

Sat 22/8

09:30-13:34

1 stop20h 04m

$1,738

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 13/8

15:25-07:00

2 stops23h 35m

Sydney Kingsford Smith

Sat 22/8

09:30-14:23

2 stops20h 53m

$1,744

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 13/8

15:25-07:00

2 stops23h 35m

Sydney Kingsford Smith

Sat 22/8

09:30-13:36

1 stop20h 06m

$1,746

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Fri 5/6

07:30-10:40

2 stops35h 10m

Sydney Kingsford Smith

Thu 11/6

12:00-15:01

1 stop19h 01m

$3,305

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 8/8

15:51-06:55

1 stop23h 04m

Sydney Kingsford Smith

Wed 12/8

12:00-18:40

1 stop22h 40m

$4,217

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 8/8

17:13-06:55

1 stop21h 42m

Sydney Kingsford Smith

Wed 12/8

12:00-18:40

1 stop22h 40m

$4,220

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 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?

The month of February is, on average, the cheapest month to fly to Sydney from Colorado, with most prices found around $156. If you aren’t able to travel to Sydney during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $200.

How far in advance should I book a flight from Colorado 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 $1,837 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Colorado for as low as $1,558 on momondo.

Can stopping save me money on Colorado to Sydney flights?

You could potentially save up to 29% 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 24m
Direct flights	None

The fastest flight from Colorado to Sydney takes 19h 24m

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

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Frequently asked questions about flying from Colorado to Sydney

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 were last updated today.
How many operators does momondo search for flights from Colorado to Sydney Kingsford Smith Airport?
As of May 2026, there is 1 operator 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The necessary travel and health documents for your Sydney Kingsford Smith Airport 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 licence 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 Sydney

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

Airline	Rating	Free cancellation	Price
Qantas Airways	PriceFrom $1,245	Free cancellation	Rating 7.5 1,033 reviews		Search Qantas Airways flights

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Lithgow

Manly

Coogee

Leura

Bondi Beach

Cronulla

Randwick

Charlestown

Newport

Swansea

Why use momondo?

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

It is quick and easy to find Colorado to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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

Yes. momondo enables you to select and highlight flights to Sydney from Colorado with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Colorado.

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

Yes. momondo can track prices for Colorado to Sydney flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.