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$433+ 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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
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 12, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/9. 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
Tue 5/121:15 pm
SYD
-
DEN
2 stops22h 34m
Multiple Airlines
Deal found 2/9$844
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 5/61:35 pm
DEN
-
SYD
1 stop25h 55m
Multiple Airlines
Tue 5/121:15 pm
SYD
-
DEN
2 stops22h 34m
Multiple Airlines
Deal found 2/10$846
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 5/29:30 pm
DEN
-
SYD
1 stop42h 00m
Multiple Airlines
Tue 5/121:15 pm
SYD
-
DEN
2 stops22h 34m
Multiple Airlines
Deal found 2/9$849
This Trip.com deal was found by Cheapflights users on 2/10. 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.
Tue 3/109:00 am
DEN
-
SYD
2 stops34h 35m
Multiple Airlines
Tue 3/176:00 am
SYD
-
DEN
2 stops35h 30m
Multiple Airlines
Deal found 2/10$851
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 5/29:30 pm
DEN
-
SYD
1 stop42h 00m
Multiple Airlines
Wed 5/131:20 pm
SYD
-
DEN
2 stops22h 29m
Multiple Airlines
Deal found 2/10$852
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 5/29:30 pm
DEN
-
SYD
1 stop42h 00m
Multiple Airlines
Fri 5/151:15 pm
SYD
-
DEN
2 stops36h 30m
Multiple Airlines
Deal found 2/10$858
This Kiwi.com deal was found by Cheapflights users on 2/9. 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
Thu 5/141:15 pm
SYD
-
DEN
2 stops36h 30m
Multiple Airlines
Deal found 2/9$867
This Kiwi.com deal was found by Cheapflights users on 2/10. 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
Mon 5/111:15 pm
SYD
-
DEN
2 stops37h 32m
Multiple Airlines
Deal found 2/10$870
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 5/29:30 pm
DEN
-
SYD
1 stop42h 00m
Multiple Airlines
Sun 5/101:15 pm
SYD
-
DEN
2 stops36h 30m
Multiple Airlines
Deal found 2/9$873
This oojo deal was found by Cheapflights users on 2/11. 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 8/138:00 am
ASE
-
SYD
2 stops32h 45m
Air New Zealand
Sat 8/227:20 pm
SYD
-
ASE
2 stops40h 30m
Air New Zealand
Deal found 2/11$1,207
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/146:39 pm
ASE
-
SYD
1 stop41h 41m
United Airlines
Wed 2/1811:20 am
SYD
-
ASE
1 stop26h 28m
United Airlines
Deal found 2/8$1,227
This Delta deal was found by Cheapflights users on 2/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:00 pm
ASE
-
SYD
1 stop26h 50m
Delta
Sat 8/229:15 am
SYD
-
ASE
1 stop26h 48m
Delta
Deal found 2/9$1,332

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 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$844
(Kiwi.com)

One-way from

$433
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$1,307
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. 16% potential increase in price ($241 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($37 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 12, 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

Sun 5/3

1:20 pm-6:50 am

2 stops25h 30m

Sydney Kingsford Smith

Wed 5/13

9:15 am-2:58 pm

2 stops21h 43m

$1,374

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 5/2

9:13 pm-7:00 am

1 stop41h 47m

Sydney Kingsford Smith

Mon 5/11

10:20 am-12:18 pm

1 stop17h 58m

$1,379

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 5/2

9:13 pm-7:00 am

1 stop41h 47m

Sydney Kingsford Smith

Sun 5/10

10:20 am-12:18 pm

1 stop17h 58m

$1,379

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 5/6

1:02 pm-6:50 pm

2 stops37h 48m

Sydney Kingsford Smith

Sun 5/10

8:45 pm-12:06 pm

2 stops31h 21m

$1,411

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 5/7

7:25 pm-6:50 pm

2 stops31h 25m

Sydney Kingsford Smith

Fri 5/15

8:45 pm-12:00 pm

2 stops31h 15m

$1,418

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 3/12

3:35 pm-7:00 am

1 stop22h 25m

Sydney Kingsford Smith

Mon 3/23

12:10 pm-4:40 pm

1 stop21h 30m

$1,419

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 3/19

6:30 am-7:30 am

2 stops32h 00m

Sydney Kingsford Smith

Mon 4/6

9:15 am-7:57 pm

2 stops26h 42m

$1,425

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 2/21

12:50 pm-6:50 am

2 stops24h 00m

Sydney Kingsford Smith

Mon 3/2

10:40 am-5:27 pm

2 stops24h 47m

$1,425

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 5/2

9:13 pm-7:00 am

1 stop41h 47m

Sydney Kingsford Smith

Thu 5/14

9:30 am-12:17 pm

1 stop18h 47m

$1,429

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 5/1

12:57 pm-6:50 am

1 stop25h 53m

Sydney Kingsford Smith

Sat 5/16

9:15 am-5:35 pm

1 stop24h 20m

$1,469

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 26 results
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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, February is the cheapest month in which you can book a flight from Colorado to Sydney (average of $690). Flying from Colorado to Sydney in January is currently the most expensive (average of $970). 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 25h 30m. Fly via Delta, United Airlines, or Air Canada to get the fastest option. There are 8348 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?

    $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, February is the cheapest month in which you can book a flight from Colorado to Sydney (average of $690). Flying from Colorado to Sydney in January is currently the most expensive (average of $970). 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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$255Average$1,365FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$684Average$1,290FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$799Average$1,184FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$833Average$913FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$834Average$1,266FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$853Average$1,459FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$980Average$1,261FlexibilityNo cancel feeOn-time67%

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