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$458+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
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 February 8, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/7. 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 4/211:35 pm
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Wed 4/291:10 pm
SYD
-
DEN
2 stops22h 39m
Multiple Airlines
Deal found 2/7$829
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 5/51:35 pm
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Wed 5/201:20 pm
SYD
-
DEN
2 stops22h 29m
Multiple Airlines
Deal found 2/7$844
This Kiwi.com deal was found by Cheapflights users on 2/6. 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 4/141:35 pm
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Tue 4/211:15 pm
SYD
-
DEN
2 stops37h 32m
Multiple Airlines
Deal found 2/6$847
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 3/1110:29 pm
DEN
-
SYD
1 stop39h 56m
Multiple Airlines
Wed 3/182:00 pm
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 2/4$863
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 4/2710:29 pm
DEN
-
SYD
1 stop41h 01m
Multiple Airlines
Tue 5/51:15 pm
SYD
-
DEN
2 stops37h 32m
Multiple Airlines
Deal found 2/7$867
This Kiwi.com deal was found by Cheapflights users on 2/6. 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 5/131:35 pm
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Wed 5/201:20 pm
SYD
-
DEN
2 stops22h 29m
Multiple Airlines
Deal found 2/6$870
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 3/49:31 pm
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Wed 3/112:00 pm
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 2/4$873
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Fri 5/17:00 am
DEN
-
SYD
1 stop32h 30m
Multiple Airlines
Sun 5/171:15 pm
SYD
-
DEN
2 stops36h 30m
Multiple Airlines
Deal found 2/8$875
This Kiwi.com deal was found by Cheapflights users on 2/5. 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 3/39:31 pm
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Tue 3/242:00 pm
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 2/5$878
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 3/810:29 pm
DEN
-
SYD
1 stop39h 56m
Multiple Airlines
Tue 3/172:00 pm
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 2/7$891
This Kiwi.com deal was found by Cheapflights users on 2/6. 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 3/210:43 pm
DEN
-
SYD
1 stop38h 42m
Multiple Airlines
Tue 3/102:00 pm
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 2/6$892
This Kiwi.com deal was found by Cheapflights users on 2/6. 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 5/121:35 pm
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Tue 5/191:15 pm
SYD
-
DEN
2 stops22h 34m
Multiple Airlines
Deal found 2/6$894

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 February 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$829
(Kiwi.com)

One-way from

$458
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$1,210
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. 19% potential increase in price ($275 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 8, 2026.
Use the filters below to find and compare flights from Colorado to Sydney that are best for you.

Fly from

Colorado

Fly to

Sydney

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 5/4

7:00 am-7:30 am

1 stop32h 30m

Sydney Kingsford Smith

Wed 5/13

1:20 pm-7:49 pm

2 stops22h 29m

$891

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 3/2

10:43 pm-7:25 am

1 stop38h 42m

Sydney Kingsford Smith

Mon 3/16

2:00 pm-9:44 am

2 stops36h 44m

$909

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 3/8

9:00 am-7:25 am

1 stop29h 25m

Sydney Kingsford Smith

Sun 3/15

2:00 pm-9:44 am

2 stops36h 44m

$932

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 3/26

1:00 pm-9:00 am

1 stop27h 00m

Sydney Kingsford Smith

Mon 4/6

5:50 pm-10:53 pm

2 stops21h 03m

$1,021

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 5/8

7:00 am-7:30 am

1 stop32h 30m

Sydney Kingsford Smith

Fri 5/22

1:15 pm-5:37 pm

2 stops44h 22m

$1,111

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 5/2

9:49 am-11:50 am

2 stops34h 01m

Sydney Kingsford Smith

Sat 5/9

5:50 pm-9:45 am

1 stop31h 55m

$1,137

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 3/19

7:05 pm-8:35 am

1 stop20h 30m

Sydney Kingsford Smith

Mon 4/6

9:20 am-12:35 pm

1 stop19h 15m

$1,158

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 5/8

7:00 am-7:30 am

1 stop32h 30m

Sydney Kingsford Smith

Thu 5/21

1:15 pm-5:37 pm

2 stops44h 22m

$1,212

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sun 3/22

4:48 pm-9:00 am

2 stops23h 12m

Sydney Kingsford Smith

Sun 3/29

9:25 pm-9:50 am

2 stops29h 25m

$1,229

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 3/4

7:05 pm-6:05 pm

2 stops29h 00m

Sydney Kingsford Smith

Wed 3/11

10:20 am-4:53 pm

2 stops23h 33m

$1,254

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 20 results
1
2

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, June is the cheapest month in which you can book a flight from Colorado to Sydney (average of $660). Flying from Colorado to Sydney in January is currently the most expensive (average of $854). 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.

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 27h. Fly via American Airlines to get the fastest option. There are 8348 mi between Colorado and Sydney.

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

    $384 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Qantas Airways and American Airlines, with prices starting from $392 and $427, 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, June is the cheapest month in which you can book a flight from Colorado to Sydney (average of $660). Flying from Colorado to Sydney in January is currently the most expensive (average of $854). 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
Manly

Browse thousands of different options on Cheapflights for your next trip

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Top 8 airlines flying from Colorado to Sydney

Discover the top 8 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 February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$255Average$1,366FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$684Average$1,290FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$800Average$1,074FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$825Average$881FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$834Average$1,266FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$853Average$1,459FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$980Average$1,266FlexibilityNo cancel feeOn-time67%

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