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$516+ Cheap flights from Colorado to Sydney (SYD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheap flight deals from Colorado to Sydney

Cheapest flights from Colorado to Sydney
Explore the most affordable flight options available from Colorado to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:15 am
DEN
-
SYD
1 stop30h 15m
Multiple Airlines
Fri 10/92:15 pm
SYD
-
DEN
2 stops36h 25m
Multiple Airlines
Deal found 7/23$969
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:44 pm
DEN
-
SYD
1 stop40h 46m
Multiple Airlines
Thu 10/82:15 pm
SYD
-
DEN
2 stops27h 10m
Multiple Airlines
Deal found 7/26$989
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:29 pm
DEN
-
SYD
1 stop40h 01m
Multiple Airlines
Tue 11/32:00 pm
SYD
-
DEN
2 stops22h 12m
Multiple Airlines
Deal found 7/23$991
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:17 pm
DEN
-
SYD
1 stop26h 13m
Multiple Airlines
Wed 11/42:00 pm
SYD
-
DEN
2 stops22h 12m
Multiple Airlines
Deal found 7/27$992
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:42 pm
DEN
-
SYD
1 stop26h 48m
Multiple Airlines
Tue 9/151:15 pm
SYD
-
DEN
2 stops44h 17m
Multiple Airlines
Deal found 7/25$996
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:39 pm
DEN
-
SYD
1 stop40h 51m
Multiple Airlines
Wed 9/161:15 pm
SYD
-
DEN
2 stops41h 50m
Multiple Airlines
Deal found 7/27$1,000
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:00 am
DEN
-
SYD
1 stop32h 30m
Multiple Airlines
Tue 9/151:15 pm
SYD
-
DEN
2 stops36h 17m
Multiple Airlines
Deal found 7/25$1,002
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:39 pm
DEN
-
SYD
1 stop40h 51m
Multiple Airlines
Tue 9/81:15 pm
SYD
-
DEN
2 stops44h 17m
Multiple Airlines
Deal found 7/27$1,007
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/201:10 pm
DEN
-
SYD
1 stop26h 20m
Multiple Airlines
Sun 10/43:25 pm
SYD
-
DEN
2 stops35h 07m
Multiple Airlines
Deal found 7/28$1,019
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/63:09 pm
COS
-
SYD
2 stops23h 46m
United Airlines
Sun 9/139:30 am
SYD
-
COS
2 stops39h 10m
United Airlines
Deal found 7/25$1,099
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/812:54 pm
ASE
-
SYD
2 stops25h 06m
Qantas Airways
Wed 11/182:05 pm
SYD
-
ASE
1 stop40h 22m
Qantas Airways
Deal found 7/25$1,104
This oojo deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/132:20 pm
ASE
-
SYD
1 stop24h 35m
Qantas Airways
Mon 8/2412:00 pm
SYD
-
ASE
1 stop24h 16m
Qantas Airways
Deal found 7/26$1,117

Find flight deals from Colorado to Sydney

Keep the following information in mind while searching for Colorado to Sydney flight deals. Data was last updated July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$969
(Kiwi.com)

One-way from

$516
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,231
Provider with most accurate pricing for Denver Intl-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Sydney Kingsford Smith flights.
Search Deals
From Colorado to Sydney Kingsford Smith
Search Deals
One-way flight from Colorado to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($222 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize 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, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2026.
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

Cheapest round-trip

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sun 9/6

3:09 pm-6:55 am

2 stops23h 46m

Sydney Kingsford Smith

Sun 9/13

9:30 am-8:40 am

2 stops39h 10m

$1,099

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

12:50 pm-6:55 am

1 stop26h 05m

Sydney Kingsford Smith

Mon 8/24

10:30 am-8:16 pm

2 stops25h 46m

$1,122

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Wed 8/12

12:03 pm-6:50 am

1 stop26h 47m

Sydney Kingsford Smith

Sat 8/22

9:15 am-7:12 pm

1 stop25h 57m

$1,145

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Mon 8/31

1:03 pm-7:00 am

2 stops25h 57m

Sydney Kingsford Smith

Mon 9/7

10:20 am-5:53 pm

2 stops23h 33m

$1,191

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Tue 8/11

2:15 pm-7:00 am

2 stops24h 45m

Sydney Kingsford Smith

Mon 8/24

10:20 am-5:18 pm

2 stops22h 58m

$1,191

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

12:03 pm-6:50 am

1 stop26h 47m

Sydney Kingsford Smith

Sat 8/22

9:15 am-7:12 pm

1 stop25h 57m

$1,195

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

12:50 pm-6:55 am

1 stop26h 05m

Sydney Kingsford Smith

Mon 8/24

6:25 am-8:16 pm

3 stops29h 51m

$1,202

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Wed 8/12

3:20 pm-6:55 am

2 stops23h 35m

Sydney Kingsford Smith

Sat 8/22

9:30 am-4:23 pm

2 stops22h 53m

$1,241

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

3:20 pm-6:55 am

2 stops23h 35m

Sydney Kingsford Smith

Mon 8/24

10:20 am-6:46 pm

2 stops24h 26m

$1,241

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

9:40 am-6:55 am

1 stop29h 15m

Sydney Kingsford Smith

Sat 8/22

10:20 am-7:52 pm

1 stop25h 32m

$1,287

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 38 resultsSorted by cheapest first
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Best time to book a flight from Colorado to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Colorado with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Sydney

What is the cheapest month to book a flight from Colorado to Sydney?

Currently, April is the cheapest month in which you can book a flight from Colorado to Sydney (average of $1,183). Flying from Colorado to Sydney in December is currently the most expensive (average of $1,797). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Colorado to Sydney?

Airfare is below average for this route at the moment.
Colorado to Sydney flights typically cost between $1,110 and $1,802 in September.
The cheapest round-trip price found within the last 5 days was $969 on Multiple Airlines (Sep 24-Oct 9).

How far ahead should I book a flight from Colorado to Sydney?

To ensure you get the cheapest price possible for a flight from Colorado to Sydney, you should look to book at least 5 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Colorado?

    Located just 4.6 mi from the city center, Sydney Kingsford Smith (SYD) is the airport most travelers will use when flying to Sydney from Colorado.

  • How long is the flight from Colorado to Sydney?

    There are many flights that can get you from Colorado to Sydney in 23h 46m. Fly via United Airlines, Qantas Airways, or Delta to get the fastest option. There are 8320 mi between Colorado and Sydney. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Colorado to Sydney one-way?

    $411 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Qantas Airways and Air Canada, with prices starting from $424 and $600, respectively.

  • What are the most popular routes from Colorado to Sydney?

    Most travelers choose Denver Intl - Sydney Kingsford Smith, Colorado Springs - Sydney Kingsford Smith or Aspen Pitkin County - Sydney Kingsford Smith when deciding on the best route from Colorado to Sydney.

  • Can I find deals for flights from Colorado to Sydney that include hotel bookings?

    Yes. In addition to deals on Colorado to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Sydney.

  • Can I find deals for business class flights from Colorado to Sydney?

    Yes. Cheapflights offers flight deals from Colorado to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Colorado to Sydney?

    Currently, April is the cheapest month in which you can book a flight from Colorado to Sydney (average of $1,183). Flying from Colorado to Sydney in December is currently the most expensive (average of $1,797). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Coogee
Manly

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from Colorado to Sydney

Discover the top 7 airlines that operate flights from Colorado to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$250Average$1,364FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$684Average$772FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$844Average$1,545FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$849Average$1,369FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$853Average$1,460FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$1,029Average$1,283FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,144Average$1,286FlexibilityNo cancel feeOn-time78%

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