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$529+ 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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$879
(United Airlines)

One-way from

$529
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$915
Provider with most accurate pricing for Denver Intl-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Sydney Kingsford Smith flights.
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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. 12% potential increase in price ($153 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 May 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 May 1, 2025.

This United Airlines deal was found by Cheapflights users on 5/1. 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.
Fri 6/68:55 amASE - SYD
2 stops30h 05mUnited Airlines
Tue 6/179:30 amSYD - ASE
1 stop20h 26mUnited Airlines
Deal found 5/1$879
This Gurufare deal was found by Cheapflights users on 4/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:57 pmDEN - SYD
2 stops43h 53mQantas Airways
Tue 11/117:30 amSYD - DEN
2 stops24h 06mQantas Airways
Deal found 4/30$1,124
This StudentUniverse deal was found by Cheapflights users on 4/30. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:51 pmDEN - SYD
2 stops24h 39mFiji Airways
Tue 11/42:10 pmSYD - DEN
2 stops23h 48mFiji Airways
Deal found 4/30$1,135
This StudentUniverse deal was found by Cheapflights users on 4/30. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/23:41 pmDEN - SYD
2 stops26h 54mAir New Zealand
Tue 9/3010:50 amSYD - DEN
2 stops23h 24mAir New Zealand
Deal found 4/30$1,150
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 5/317:05 pmDEN - SYD
2 stops51h 35mMultiple Airlines
Sun 6/85:45 pmSYD - DEN
1 stop32h 03mMultiple Airlines
Deal found 4/30$1,198
This Air Canada deal was found by Cheapflights users on 4/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/147:05 pmDEN - SYD
1 stop20h 15mAir Canada
Tue 10/2810:20 amSYD - DEN
2 stops23h 15mAir Canada
Deal found 4/29$1,234
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/269:18 pmDEN - SYD
2 stops30h 27mAlaska Airlines
Fri 9/59:40 pmSYD - DEN
1 stop30h 30mAlaska Airlines
Deal found 4/30$1,288
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1212:59 pmDEN - SYD
1 stop25h 36mDelta
Fri 9/199:25 amSYD - DEN
1 stop24h 44mDelta
Deal found 4/30$1,347
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/29:24 pmDEN - SYD
1 stop41h 31mUnited Airlines
Tue 9/309:30 amSYD - DEN
2 stops21h 26mUnited Airlines
Deal found 4/30$1,371
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/611:40 amDEN - SYD
1 stop27h 50mAmerican Airlines
Sat 7/1910:25 amSYD - DEN
1 stop23h 19mAmerican Airlines
Deal found 4/30$1,374
This Delta deal was found by Cheapflights users on 5/1. 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.
Fri 6/612:00 pmASE - SYD
1 stop26h 35mDelta
Tue 6/179:25 amSYD - ASE
1 stop24h 26mDelta
Deal found 5/1$1,390
This Gurufare deal was found by Cheapflights users on 4/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:00 amDEN - SYD
3 stops45h 00mTurkish Airlines
Wed 10/299:40 pmSYD - DEN
2 stops38h 00mTurkish Airlines
Deal found 4/30$1,763

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 May 1, 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

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Fri 6/6

1:35 pm-7:00 am

2 stops25h 25m

Sydney Kingsford Smith

Tue 6/17

9:30 am-6:27 pm

2 stops24h 57m

$879

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 7/4

5:05 pm-8:45 am

2 stops23h 40m

Sydney Kingsford Smith

Sat 7/19

9:55 am-10:47 pm

2 stops28h 52m

$1,194

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 5/31

7:05 pm-2:40 pm

2 stops51h 35m

Sydney Kingsford Smith

Sun 6/8

5:45 pm-9:48 am

1 stop32h 03m

$1,198

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 7/1

5:33 pm-7:30 am

1 stop21h 57m

Sydney Kingsford Smith

Thu 7/31

9:10 am-11:10 am

1 stop18h 00m

$1,310

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 7/6

11:40 am-7:30 am

1 stop27h 50m

Sydney Kingsford Smith

Sat 7/19

10:25 am-5:44 pm

1 stop23h 19m

$1,374

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 5/27

7:05 pm-7:45 pm

2 stops32h 40m

Sydney Kingsford Smith

Tue 6/3

9:40 pm-4:49 pm

2 stops35h 09m

$1,389

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Fri 6/6

12:00 pm-6:35 am

1 stop26h 35m

Sydney Kingsford Smith

Tue 6/17

9:25 am-5:51 pm

1 stop24h 26m

$1,390

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 6/10

6:31 pm-11:45 am

2 stops25h 14m

Sydney Kingsford Smith

Tue 9/16

1:15 pm-8:00 pm

2 stops22h 45m

$1,408

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 6/16

11:50 am-6:35 am

2 stops26h 45m

Sydney Kingsford Smith

Tue 7/8

9:25 am-7:55 pm

2 stops26h 30m

$1,410

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 7/6

11:39 am-7:00 am

2 stops27h 21m

Sydney Kingsford Smith

Sat 7/19

9:30 am-3:00 pm

2 stops21h 30m

$1,412

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 26 results
1
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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 $1,043). Flying from Colorado to Sydney in December is currently the most expensive (average of $1,643). 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 May 1, 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 May 1, 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
8.8
Very good
62 reviews

Boarding

8.7

Comfort

8.1

Food

7.8

Entertainment

7.3

Crew

9.1

Overall

8.8

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
8.8
Very good
62 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Comfort

8.1

Food

7.8

Entertainment

7.3

Crew

9.1

Overall

8.8

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
190 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Comfort

8.1

Food

7.8

Entertainment

7.3

Crew

9.1

Overall

8.8

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
1,292 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Comfort

8.1

Food

7.8

Entertainment

7.3

Crew

9.1

Overall

8.8

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
7,934 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Comfort

8.1

Food

7.8

Entertainment

7.3

Crew

9.1

Overall

8.8

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 New Zealand
8.0
Very good
472 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Comfort

8.1

Food

7.8

Entertainment

7.3

Crew

9.1

Overall

8.8

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?

    $796 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 United Airlines, with prices starting from $808 and $835, 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 $1,043). Flying from Colorado to Sydney in December is currently the most expensive (average of $1,643). 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
Coogee
Manly

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$768Average$856FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$810Average$913FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$826Average$866FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$834Average$1,547FlexibilityNo cancel feeOn-time78%
DeltaCheapest$848Average$1,301FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$950Average$1,222FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,054Average$1,457FlexibilityNo cancel feeOn-time69%

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