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$414+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Colorado to Sydney

Keep the following information in mind while searching for Colorado to Sydney flight deals. Data was last updated June 12, 2025.

Round-trip from

$836
(Cheapflightsfares)

One-way from

$429
(Justfly.com)

Popular in

December

Cheapest in

April

Average price

$902
From Colorado to Sydney Kingsford Smith
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One-way flight from Colorado to Sydney Kingsford Smith
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Highest demand for flights based on searches. 13% potential increase in price ($174 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 June 12, 2025.

This Justfly.com deal was found by Cheapflights users on 6/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/285:42 pmDEN - SYD
1 stop20h 43mQantas Airways
Mon 11/1011:15 amSYD - DEN
1 stop19h 09mQantas Airways
Deal found 6/11$835
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:30 amDEN - SYD
1 stop32h 05mDelta
Wed 11/1211:05 amSYD - DEN
1 stop18h 25mDelta
Deal found 6/11$861
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/98:15 amCOS - SYD
2 stops30h 20mDelta
Wed 7/169:25 amSYD - COS
2 stops28h 48mDelta
Deal found 6/11$875
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2511:40 amDEN - SYD
1 stop27h 50mMultiple Airlines
Sun 9/74:20 pmSYD - DEN
2 stops35h 50mMultiple Airlines
Deal found 6/11$934
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/246:35 pmDEN - SYD
1 stop20h 20mAmerican Airlines
Thu 7/319:10 amSYD - DEN
2 stops22h 36mAmerican Airlines
Deal found 6/11$950
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/154:59 pmDEN - SYD
2 stops25h 31mFiji Airways
Sat 12/62:30 pmSYD - DEN
2 stops23h 25mFiji Airways
Deal found 6/12$1,140
This Air Canada deal was found by Cheapflights users on 6/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:50 amDEN - SYD
1 stop27h 45mAir Canada
Wed 11/2611:20 amSYD - DEN
1 stop19h 17mAir Canada
Deal found 6/10$1,202
This oojo deal was found by Cheapflights users on 6/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/277:45 amDEN - SYD
2 stops33h 00mAir New Zealand
Mon 8/118:45 amSYD - DEN
2 stops26h 55mAir New Zealand
Deal found 6/9$1,207
This Gurufare deal was found by Cheapflights users on 6/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/58:09 amASE - SYD
2 stops34h 26mAir New Zealand
Wed 8/209:55 amSYD - ASE
2 stops26h 11mAir New Zealand
Deal found 6/11$1,265
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/412:05 pmASE - SYD
1 stop26h 30mDelta
Wed 8/209:25 amSYD - ASE
1 stop24h 26mDelta
Deal found 6/11$1,270
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 8/41:30 pmASE - SYD
2 stops25h 30mUnited Airlines
Wed 8/2010:20 amSYD - ASE
2 stops20h 24mUnited Airlines
Deal found 6/12$1,275
This Gurufare deal was found by Cheapflights users on 6/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2512:05 pmCOS - SYD
2 stops28h 40mAir New Zealand
Fri 8/18:45 amSYD - COS
2 stops28h 41mAir New Zealand
Deal found 6/10$1,351

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 June 12, 2025.
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

Tue 10/28

5:42 pm-7:25 am

1 stop20h 43m

Sydney Kingsford Smith

Mon 11/10

11:15 am-12:24 pm

1 stop19h 09m

$835

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 10/26

6:30 am-7:35 am

1 stop32h 05m

Sydney Kingsford Smith

Wed 11/12

11:05 am-11:30 am

1 stop18h 25m

$861

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 7/9

8:15 am-6:35 am

2 stops30h 20m

Sydney Kingsford Smith

Wed 7/16

9:25 am-10:13 pm

2 stops28h 48m

$875

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 6/25

11:40 am-7:30 am

1 stop27h 50m

Sydney Kingsford Smith

Sun 9/7

4:20 pm-12:10 pm

2 stops35h 50m

$934

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 7/24

6:35 pm-6:55 am

1 stop20h 20m

Sydney Kingsford Smith

Thu 7/31

9:10 am-3:46 pm

2 stops22h 36m

$950

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 11/15

4:59 pm-12:30 pm

2 stops25h 31m

Sydney Kingsford Smith

Sat 12/6

2:30 pm-7:55 pm

2 stops23h 25m

$1,140

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 11/12

11:50 am-9:35 am

1 stop27h 45m

Sydney Kingsford Smith

Wed 11/26

11:20 am-12:37 pm

1 stop19h 17m

$1,202

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 7/27

7:45 am-8:45 am

2 stops33h 00m

Sydney Kingsford Smith

Mon 8/11

8:45 am-7:40 pm

2 stops26h 55m

$1,207

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Tue 8/5

8:09 am-10:35 am

2 stops34h 26m

Sydney Kingsford Smith

Wed 8/20

9:55 am-8:06 pm

2 stops26h 11m

$1,265

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Mon 8/4

12:05 pm-6:35 am

1 stop26h 30m

Sydney Kingsford Smith

Wed 8/20

9:25 am-5:51 pm

1 stop24h 26m

$1,270

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 33 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, March is the cheapest month in which you can book a flight from Colorado to Sydney (average of $1,041). Flying from Colorado to Sydney in December is currently the most expensive (average of $1,635). 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.

What is the cheapest time of day to fly from CO to SYD?

Find hourly flight availability from Colorado to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Colorado to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated June 12, 2025.
See what other customers who have flown with Air Tahiti Nui, Fiji Airways and Singapore Airlines from Colorado to Sydney have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.7
Very good
64 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Fiji Airways
8.1
Very good
194 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Singapore Airlines
8.1
Very good
1,302 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Alaska Airlines
8.0
Very good
10,000 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Delta
8.0
Very good
7,950 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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.

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

    $429 is the cheapest one-way deal found within the past few days, from Qantas Airways. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $447 and $958, 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, March is the cheapest month in which you can book a flight from Colorado to Sydney (average of $1,041). Flying from Colorado to Sydney in December is currently the most expensive (average of $1,635). 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 Colorado?

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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$768Average$856FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$810Average$914FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$829Average$865FlexibilityNo cancel feeOn-time71%
DeltaCheapest$830Average$1,286FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$834Average$1,373FlexibilityNo cancel feeOn-time78%
Air CanadaCheapest$951Average$1,238FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,165Average$1,455FlexibilityNo cancel feeOn-time69%

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