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Cheap flights from Colorado to Sydney from $775

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 9/3. 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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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:00 - 22:05
DEN
-
SYD
40h 05m2 stops
Multiple Airlines Logo
14:00 - 23:10
SYD
-
DEN
27h 10m2 stops
$1,336Multiple Airlines
Sat, 31 Jan - Sun, 15 Feb
Multiple Airlines Logo
06:10 - 12:45
DEN
-
SYD
37h 35m2 stops
Multiple Airlines Logo
13:15 - 00:40
SYD
-
DEN
27h 25m2 stops
$1,374Multiple Airlines
Thu, 2 Apr - Tue, 7 Apr
Multiple Airlines Logo
06:10 - 12:45
DEN
-
SYD
37h 35m2 stops
Multiple Airlines Logo
13:15 - 00:40
SYD
-
DEN
27h 25m2 stops
$1,410Multiple Airlines
Fri, 3 Apr - Mon, 13 Apr
Air Canada Logo
19:05 - 09:35
DEN
-
SYD
20h 30m1 stop
Air Canada Logo
10:20 - 12:37
SYD
-
DEN
19h 17m1 stop
$1,434Air Canada
Tue, 3 Mar - Tue, 10 Mar
Air Canada Logo
19:05 - 09:35
DEN
-
SYD
20h 30m1 stop
Air Canada Logo
09:20 - 12:33
SYD
-
DEN
19h 13m1 stop
$1,442Air Canada
Sun, 1 Mar - Sun, 5 Apr
United Airlines Logo
17:33 - 09:05
ASE
-
SYD
21h 32m1 stop
United Airlines Logo
12:10 - 13:10
SYD
-
ASE
19h 00m1 stop
$2,034United Airlines
Wed, 18 Feb - Sun, 22 Feb
United Airlines Logo
15:29 - 09:05
ASE
-
SYD
23h 36m2 stops
United Airlines Logo
12:10 - 13:10
SYD
-
ASE
19h 00m1 stop
$2,042United Airlines
Wed, 18 Feb - Sun, 22 Feb
Qantas Airways Logo
12:38 - 11:55
COS
-
SYD
29h 17m2 stops
Qantas Airways Logo
08:55 - 14:09
SYD
-
COS
47h 14m2 stops
$2,141Qantas Airways
Tue, 30 Dec - Wed, 7 Jan
Qantas Airways Logo
12:38 - 06:55
COS
-
SYD
24h 17m1 stop
Qantas Airways Logo
08:55 - 14:09
SYD
-
COS
47h 14m2 stops
$2,802Qantas Airways
Tue, 30 Dec - Wed, 7 Jan
British Airways Logo
15:05 - 06:55
COS
-
SYD
45h 50m3 stops
British Airways Logo
16:20 - 16:01
SYD
-
COS
41h 41m3 stops
$5,763British Airways
Sat, 7 Feb - Wed, 11 Feb

United Airlines flights from Colorado to Sydney

Our best United Airlines deals on Colorado to Sydney flight tickets
United Airlines
18 Feb
ASE17:33Aspen Pitkin County
21h 32m
1 stop
SYD09:05Sydney Kingsford Smith
22 Feb
SYD12:10Sydney Kingsford Smith
19h 00m
1 stop
ASE13:10Aspen Pitkin County
$2,034
Find similar
United Airlines
18 Feb
ASE15:29Aspen Pitkin County
23h 36m
2 stops
SYD09:05Sydney Kingsford Smith
22 Feb
SYD12:10Sydney Kingsford Smith
19h 00m
1 stop
ASE13:10Aspen Pitkin County
$2,042
Find similar
United Airlines
5 Feb
ASE13:54Aspen Pitkin County
25h 11m
1 stop
SYD09:05Sydney Kingsford Smith
9 Feb
SYD11:50Sydney Kingsford Smith
20h 27m
1 stop
ASE14:17Aspen Pitkin County
$2,111
Find similar

Air Canada flights from Colorado to Sydney

Our best Air Canada deals on Colorado to Sydney flight tickets
Air Canada
3 Mar
DEN19:05Denver Intl
20h 30m
1 stop
SYD09:35Sydney Kingsford Smith
10 Mar
SYD10:20Sydney Kingsford Smith
19h 17m
1 stop
DEN12:37Denver Intl
$1,434
Find similar
Air Canada
1 Mar
DEN19:05Denver Intl
20h 30m
1 stop
SYD09:35Sydney Kingsford Smith
5 Apr
SYD09:20Sydney Kingsford Smith
19h 13m
1 stop
DEN12:33Denver Intl
$1,442
Find similar
Air Canada
14 Apr
DEN11:21Denver Intl
27h 59m
2 stops
SYD07:20Sydney Kingsford Smith
21 Apr
SYD07:00Sydney Kingsford Smith
21h 33m
2 stops
DEN12:33Denver Intl
$1,457
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Colorado to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 78,305 searches. Data last updated 8 December 2025.
Use the filters below to find and compare flights from Colorado to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 31/1

12:00-22:05

2 stops40h 05m

Sydney Kingsford Smith

Sun 15/2

14:00-23:10

2 stops27h 10m

$1,336

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 2/4

06:10-12:45

2 stops37h 35m

Sydney Kingsford Smith

Tue 7/4

13:15-00:40

2 stops27h 25m

$1,374

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 3/4

06:10-12:45

2 stops37h 35m

Sydney Kingsford Smith

Mon 13/4

13:15-00:40

2 stops27h 25m

$1,410

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 3/3

19:05-09:35

1 stop20h 30m

Sydney Kingsford Smith

Tue 10/3

10:20-12:37

1 stop19h 17m

$1,434

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 1/3

19:05-09:35

1 stop20h 30m

Sydney Kingsford Smith

Sun 5/4

09:20-12:33

1 stop19h 13m

$1,442

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Wed 18/2

17:33-09:05

1 stop21h 32m

Sydney Kingsford Smith

Sun 22/2

12:10-13:10

1 stop19h 00m

$2,034

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Wed 18/2

15:29-09:05

2 stops23h 36m

Sydney Kingsford Smith

Sun 22/2

12:10-13:10

1 stop19h 00m

$2,042

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Tue 30/12

12:38-11:55

2 stops29h 17m

Sydney Kingsford Smith

Wed 7/1

08:55-14:09

2 stops47h 14m

$2,141

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Tue 30/12

12:38-06:55

1 stop24h 17m

Sydney Kingsford Smith

Wed 7/1

08:55-14:09

2 stops47h 14m

$2,802

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 7/2

15:05-06:55

3 stops45h 50m

Sydney Kingsford Smith

Wed 11/2

16:20-16:01

3 stops41h 41m

$5,763

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

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?

The month of April is, on average, the cheapest month to fly to Sydney from Colorado, with most prices found around $1,300. If you aren’t able to travel to Sydney during the month of April, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $1,302.

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

Our data shows that Wednesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,713. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,327.

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 midday. momondo users have found flights departing from Colorado to Sydney at midday for as low as $1,411. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $2,102 on average. Flights to Sydney from Colorado in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 $1,617 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 $1,490 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

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 were last updated today.

  • 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?

    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 AirwaysPriceFrom $995Free cancellationRating
7.5
948 reviews
Search Qantas Airways flights

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Terrigal
Penrith
Katoomba
Lithgow
Leura
Manly
Bondi Beach
Coogee
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.

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