How long does it take to fly to Sydney?

If you’re flying from a popular airport in Colorado, such as Denver or Aspen, and flying into Sydney, then you can expect flight times to average 23h and 24h 48m, respectively.

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

United Airlines and Qantas Airways 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 August 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.

$769 Cheap Flights from Colorado to Sydney in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Sydney

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:30 - 22:05DEN Denver Intl-SYD Sydney Kingsford Smith

46h 35m2 stops Los Angeles Los Angeles Nadi

06:00 - 00:25SYD Sydney Kingsford Smith-DEN Denver Intl

36h 25m2 stops Nadi Los Angeles Los Angeles

$1,380Multiple Airlines

Sat, 24 Oct - Mon, 9 Nov

13:10 - 11:50DEN Denver Intl-SYD Sydney Kingsford Smith

30h 40m2 stops Los Angeles Los Angeles Nadi

06:15 - 23:44SYD Sydney Kingsford Smith-DEN Denver Intl

33h 29m3 stops Nadi Los Angeles Los Angeles Las Vegas Harry Reid Intl

$1,416Multiple Airlines

Sat, 19 Sep - Tue, 29 Sep

06:25 - 12:35DEN Denver Intl-SYD Sydney Kingsford Smith

36h 10m2 stops Los Angeles Los Angeles Nadi

14:00 - 23:28SYD Sydney Kingsford Smith-DEN Denver Intl

27h 28m2 stops Nadi Los Angeles Los Angeles

$1,419Multiple Airlines

Wed, 9 Dec - Wed, 16 Dec

12:17 - 07:30DEN Denver Intl-SYD Sydney Kingsford Smith

26h 13m1 stop Los Angeles Los Angeles

14:00 - 09:55SYD Sydney Kingsford Smith-DEN Denver Intl

36h 55m2 stops Nadi Los Angeles Los Angeles

$1,421Multiple Airlines

Tue, 20 Oct - Thu, 29 Oct

12:17 - 07:30DEN Denver Intl-SYD Sydney Kingsford Smith

26h 13m1 stop Los Angeles Los Angeles

14:00 - 09:55SYD Sydney Kingsford Smith-DEN Denver Intl

36h 55m2 stops Nadi Los Angeles Los Angeles

$1,421Multiple Airlines

Mon, 19 Oct - Thu, 29 Oct

12:17 - 07:30DEN Denver Intl-SYD Sydney Kingsford Smith

26h 13m1 stop Los Angeles Los Angeles

14:00 - 09:55SYD Sydney Kingsford Smith-DEN Denver Intl

36h 55m2 stops Nadi Los Angeles Los Angeles

$1,421Multiple Airlines

Wed, 21 Oct - Thu, 29 Oct

06:30 - 07:30DEN Denver Intl-SYD Sydney Kingsford Smith

32h 00m1 stop Los Angeles Los Angeles

14:00 - 09:55SYD Sydney Kingsford Smith-DEN Denver Intl

36h 55m2 stops Nadi Los Angeles Los Angeles

$1,438Multiple Airlines

Thu, 22 Oct - Thu, 29 Oct

12:17 - 07:30DEN Denver Intl-SYD Sydney Kingsford Smith

26h 13m1 stop Los Angeles Los Angeles

14:00 - 09:55SYD Sydney Kingsford Smith-DEN Denver Intl

36h 55m2 stops Nadi Los Angeles Los Angeles

$1,440Multiple Airlines

Sat, 17 Oct - Thu, 29 Oct

12:55 - 06:25DEN Denver Intl-SYD Sydney Kingsford Smith

23h 30m1 stop Los Angeles Los Angeles

11:20 - 19:41SYD Sydney Kingsford Smith-DEN Denver Intl

26h 21m1 stop Los Angeles Los Angeles

$2,520Qantas Airways

Sat, 5 Dec - Thu, 31 Dec

18:42 - 07:30DEN Denver Intl-SYD Sydney Kingsford Smith

19h 48m1 stop Los Angeles Los Angeles

11:15 - 18:11SYD Sydney Kingsford Smith-DEN Denver Intl

23h 56m1 stop Los Angeles Los Angeles

$2,525Qantas Airways

Fri, 16 Oct - Mon, 26 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

19:12 - 07:00ASE Aspen Pitkin County-SYD Sydney Kingsford Smith

19h 48m1 stop Los Angeles Los Angeles

09:30 - 20:26SYD Sydney Kingsford Smith-ASE Aspen Pitkin County

26h 56m1 stop Los Angeles Los Angeles

$1,822United Airlines

Thu, 13 Aug - Mon, 24 Aug

14:15 - 06:55ASE Aspen Pitkin County-SYD Sydney Kingsford Smith

24h 40m2 stops Denver Intl San Francisco

09:30 - 13:34SYD Sydney Kingsford Smith-ASE Aspen Pitkin County

20h 04m1 stop Los Angeles Los Angeles

$1,827United Airlines

Thu, 13 Aug - Mon, 24 Aug

15:20 - 06:55ASE Aspen Pitkin County-SYD Sydney Kingsford Smith

23h 35m2 stops Denver Intl San Francisco

10:20 - 18:46SYD Sydney Kingsford Smith-ASE Aspen Pitkin County

24h 26m2 stops San Francisco Denver Intl

$1,827United Airlines

Thu, 13 Aug - Mon, 24 Aug

22:39 - 07:30DEN Denver Intl-SYD Sydney Kingsford Smith

40h 51m1 stop Los Angeles Los Angeles

13:15 - 21:16SYD Sydney Kingsford Smith-DEN Denver Intl

24h 01m2 stops Nadi San Francisco

$1,878Multiple Airlines

Mon, 10 Aug - Wed, 19 Aug

07:00 - 07:05DEN Denver Intl-SYD Sydney Kingsford Smith

32h 05m1 stop Los Angeles Los Angeles

09:10 - 13:13SYD Sydney Kingsford Smith-DEN Denver Intl

20h 03m1 stop Los Angeles Los Angeles

$1,904Multiple Airlines

Mon, 10 Aug - Wed, 19 Aug

12:25 - 08:45DEN Denver Intl-SYD Sydney Kingsford Smith

28h 20m2 stops San Francisco Auckland Intl

11:55 - 06:19SYD Sydney Kingsford Smith-DEN Denver Intl

34h 24m2 stops Auckland Intl Honolulu

$2,054Air New Zealand

Mon, 10 Aug - Wed, 19 Aug

17:54 - 08:45DEN Denver Intl-SYD Sydney Kingsford Smith

22h 51m2 stops San Francisco Auckland Intl

18:00 - 19:39SYD Sydney Kingsford Smith-DEN Denver Intl

41h 39m3 stops Singapore Changi Tokyo Narita Los Angeles Los Angeles

$3,833Multiple Airlines

Mon, 10 Aug - Wed, 19 Aug

18:05 - 16:45DEN Denver Intl-SYD Sydney Kingsford Smith

54h 40m3 stops Los Angeles Los Angeles Tokyo Narita Singapore Changi

18:00 - 19:39SYD Sydney Kingsford Smith-DEN Denver Intl

41h 39m3 stops Singapore Changi Tokyo Narita Los Angeles Los Angeles

$3,977Singapore Airlines

Mon, 10 Aug - Wed, 19 Aug

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Air New Zealand flights from Colorado to Sydney

Our best Air New Zealand deals on Colorado to Sydney flight tickets

Air New Zealand

21 Oct

DEN16:15Denver Intl

23h 30m

2 stops

SYD08:45Sydney Kingsford Smith

4 Nov

SYD09:55Sydney Kingsford Smith

26h 01m

2 stops

DEN17:56Denver Intl

$1,605

Air New Zealand

19 Aug

DEN17:45Denver Intl

23h 00m

2 stops

SYD08:45Sydney Kingsford Smith

9 Sept

SYD11:55Sydney Kingsford Smith

26h 23m

2 stops

DEN22:18Denver Intl

$1,607

Air New Zealand

26 Oct

DEN13:30Denver Intl

26h 05m

2 stops

SYD08:35Sydney Kingsford Smith

11 Nov

SYD11:50Sydney Kingsford Smith

27h 37m

2 stops

DEN21:27Denver Intl

$1,611

United Airlines flights from Colorado to Sydney

Our best United Airlines deals on Colorado to Sydney flight tickets

United Airlines

13 Aug

ASE19:12Aspen Pitkin County

19h 48m

1 stop

SYD07:00Sydney Kingsford Smith

24 Aug

SYD09:30Sydney Kingsford Smith

26h 56m

1 stop

ASE20:26Aspen Pitkin County

$1,822

United Airlines

13 Aug

ASE14:15Aspen Pitkin County

24h 40m

2 stops

SYD06:55Sydney Kingsford Smith

24 Aug

SYD09:30Sydney Kingsford Smith

20h 04m

1 stop

ASE13:34Aspen Pitkin County

$1,827

United Airlines

13 Aug

ASE14:15Aspen Pitkin County

24h 40m

2 stops

SYD06:55Sydney Kingsford Smith

24 Aug

SYD09:30Sydney Kingsford Smith

20h 04m

1 stop

ASE13:34Aspen Pitkin County

$1,829

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sat 24/10

06:30-22:05

2 stops46h 35m

Sydney Kingsford Smith

Mon 9/11

06:00-00:25

2 stops36h 25m

$1,380

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sat 19/9

13:10-11:50

2 stops30h 40m

Sydney Kingsford Smith

Tue 29/9

06:15-23:44

3 stops33h 29m

$1,416

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Wed 9/12

06:25-12:35

2 stops36h 10m

Sydney Kingsford Smith

Wed 16/12

14:00-23:28

2 stops27h 28m

$1,419

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Tue 20/10

12:17-07:30

1 stop26h 13m

Sydney Kingsford Smith

Thu 29/10

14:00-09:55

2 stops36h 55m

$1,421

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 19/10

12:17-07:30

1 stop26h 13m

Sydney Kingsford Smith

Thu 29/10

14:00-09:55

2 stops36h 55m

$1,421

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Wed 21/10

12:17-07:30

1 stop26h 13m

Sydney Kingsford Smith

Thu 29/10

14:00-09:55

2 stops36h 55m

$1,421

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Thu 22/10

06:30-07:30

1 stop32h 00m

Sydney Kingsford Smith

Thu 29/10

14:00-09:55

2 stops36h 55m

$1,438

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sat 17/10

12:17-07:30

1 stop26h 13m

Sydney Kingsford Smith

Thu 29/10

14:00-09:55

2 stops36h 55m

$1,440

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sat 5/12

12:55-06:25

1 stop23h 30m

Sydney Kingsford Smith

Thu 31/12

11:20-19:41

1 stop26h 21m

$2,520

Fastest return journey

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Fri 16/10

18:42-07:30

1 stop19h 48m

Sydney Kingsford Smith

Mon 26/10

11:15-18:11

1 stop23h 56m

$2,525

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 May is, on average, the cheapest month to fly to Sydney from Colorado, with most prices found around $1,669. If you aren’t able to travel to Sydney during the month of May, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,673.

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 $1,928 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 $1,510 on momondo.

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	23h 00m
Direct flights	None

The fastest flight from Colorado to Sydney takes 23h 00m

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

Search flight deals

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 August 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 $1,277	Free cancellation	Rating 7.5 1,079 reviews		Search Qantas Airways flights

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Lithgow

Coogee

Manly

Leura

Randwick

Cronulla

Bondi Beach

Charlestown

Swansea

Newport

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.