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$524+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Sep 2 — Sep 91
Wed 9/2
Wed 9/9
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 August 3, 2026.

This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:42 pm
DEN
-
SYD
2 stops31h 08m
Multiple Airlines
Wed 9/231:15 pm
SYD
-
DEN
3 stops26h 29m
Multiple Airlines
Deal found 7/30$936
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/141:10 pm
DEN
-
SYD
2 stops30h 40m
Multiple Airlines
Mon 9/281:15 pm
SYD
-
DEN
3 stops39h 31m
Multiple Airlines
Deal found 7/31$949
This Trip.com deal was found by Cheapflights users on 8/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:10 pm
DEN
-
SYD
2 stops41h 15m
Multiple Airlines
Wed 9/236:15 am
SYD
-
DEN
3 stops33h 29m
Multiple Airlines
Deal found 8/2$966
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 11/410:29 pm
DEN
-
SYD
1 stop37h 56m
Multiple Airlines
Wed 11/112:00 pm
SYD
-
DEN
2 stops22h 12m
Multiple Airlines
Deal found 7/29$986
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 9/210:39 pm
DEN
-
SYD
1 stop40h 51m
Multiple Airlines
Tue 9/81:15 pm
SYD
-
DEN
2 stops44h 17m
Multiple Airlines
Deal found 7/30$989
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 10/2010:29 pm
DEN
-
SYD
1 stop40h 01m
Multiple Airlines
Thu 11/52:00 pm
SYD
-
DEN
2 stops28h 25m
Multiple Airlines
Deal found 7/31$995
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 11/1812:02 pm
DEN
-
SYD
1 stop24h 23m
Multiple Airlines
Wed 12/22:00 pm
SYD
-
DEN
2 stops27h 28m
Multiple Airlines
Deal found 7/30$1,010
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 10/2712:02 pm
DEN
-
SYD
1 stop25h 23m
Multiple Airlines
Tue 11/102:00 pm
SYD
-
DEN
2 stops37h 55m
Multiple Airlines
Deal found 8/2$1,013
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 11/199:40 am
DEN
-
SYD
1 stop26h 45m
Multiple Airlines
Wed 12/22:00 pm
SYD
-
DEN
2 stops27h 28m
Multiple Airlines
Deal found 7/30$1,015
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sat 10/31:10 pm
DEN
-
SYD
1 stop25h 20m
Multiple Airlines
Tue 10/202:15 pm
SYD
-
DEN
2 stops39h 34m
Multiple Airlines
Deal found 7/30$1,054
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Tue 8/117:12 pm
ASE
-
SYD
1 stop19h 48m
United Airlines
Sat 8/229:30 am
SYD
-
ASE
1 stop20h 04m
United Airlines
Deal found 7/29$1,237
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Thu 8/137:12 pm
ASE
-
SYD
1 stop19h 48m
United Airlines
Mon 8/249:30 am
SYD
-
ASE
1 stop26h 56m
United Airlines
Deal found 7/31$1,286

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 August 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$936
(Trip.com)

One-way from

$524
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$1,370
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 August 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 August 3, 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

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

7:12 pm-7:00 am

1 stop19h 48m

Sydney Kingsford Smith

Mon 8/24

9:30 am-8:26 pm

1 stop26h 56m

$1,237

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

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 8/19

1:52 pm-6:55 am

2 stops25h 03m

Sydney Kingsford Smith

Sun 8/23

10:20 am-4:26 pm

2 stops22h 06m

$1,427

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 9/12

1:03 pm-6:55 am

2 stops25h 52m

Sydney Kingsford Smith

Sat 9/19

9:30 am-6:47 pm

2 stops25h 17m

$1,461

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 10/8

5:57 pm-6:50 pm

2 stops31h 53m

Sydney Kingsford Smith

Sun 10/18

8:45 pm-9:36 pm

2 stops41h 51m

$1,464

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 10/7

5:57 pm-6:50 pm

2 stops31h 53m

Sydney Kingsford Smith

Thu 10/22

8:45 pm-6:01 pm

2 stops38h 16m

$1,490

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 10/31

7:35 am-7:00 am

1 stop30h 25m

Sydney Kingsford Smith

Wed 11/4

9:15 am-11:19 am

1 stop20h 04m

$1,496

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 10/28

8:30 pm-7:35 pm

2 stops54h 05m

Sydney Kingsford Smith

Sun 11/1

9:30 pm-6:25 pm

2 stops38h 55m

$1,571

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 11/28

6:00 am-8:30 am

2 stops32h 30m

Sydney Kingsford Smith

Fri 12/18

10:40 am-7:36 pm

2 stops26h 56m

$1,700

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 10/7

1:55 pm-7:50 am

2 stops24h 55m

Sydney Kingsford Smith

Wed 10/21

10:15 am-4:56 pm

2 stops23h 41m

$1,762

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/2

Showing 1-10 of 37 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 $936 on Multiple Airlines (Sep 9-Sep 23).

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 19h 48m. Fly via United Airlines, Turkish Airlines, or Delta to get the fastest option. There are 8223 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, Aspen Pitkin County - Sydney Kingsford Smith or Colorado Springs - 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 August 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$215Average$1,363FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$684Average$772FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$844Average$1,545FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$849Average$1,368FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$853Average$1,460FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$1,020Average$1,332FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,144Average$1,286FlexibilityNo cancel feeOn-time78%

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