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Cheap flights from Colorado to Sydney from $638

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
26 Feb — 5 Mar1
1 adult

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 21 February 2025.

Round-trip from

$1,306

One-way from

$638

Popular in

December

Cheapest in

April

Average price

$1,554
American Airlines
  • American Airlines
  • 11/3-1/4
  • 2 total stops
  • 50h 18m total
  • Colorado to Sydney
Search Deals
Qantas Airways
  • Qantas Airways
  • 1/3
  • 1 total stop
  • 19h 18m total
  • Colorado to Sydney
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($346 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($71 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 21 February 2025.

Wed 26/213:00DEN - SYD
1 stop26h 00mQantas Airways
Fri 14/311:15SYD - DEN
1 stop18h 36mQantas Airways
Deal found 20/2$1,293
Wed 27/809:10DEN - SYD
1 stop29h 45mAmerican Airlines
Wed 3/912:10SYD - DEN
1 stop18h 53mAmerican Airlines
Deal found 19/2$1,303
Sun 26/1011:51DEN - SYD
1 stop28h 09mAlaska Airlines
Mon 10/1111:15SYD - DEN
1 stop25h 31mAlaska Airlines
Deal found 20/2$1,336
Fri 6/607:30ASE - SYD
2 stops31h 25mUnited Airlines
Tue 17/609:30SYD - ASE
1 stop20h 26mUnited Airlines
Deal found 21/2$1,378
Wed 23/418:40DEN - SYD
1 stop20h 15mMultiple Airlines
Wed 30/413:15SYD - DEN
2 stops36h 33mMultiple Airlines
Deal found 21/2$1,397
Mon 26/512:59DEN - SYD
1 stop25h 36mDelta
Mon 2/609:25SYD - DEN
1 stop24h 46mDelta
Deal found 20/2$1,461
Wed 16/408:05COS - SYD
2 stops30h 30mDelta
Wed 30/409:25SYD - COS
2 stops25h 57mDelta
Deal found 20/2$1,469
Sun 25/517:40DEN - SYD
2 stops23h 05mAir New Zealand
Sun 8/611:50SYD - DEN
2 stops23h 50mAir New Zealand
Deal found 21/2$1,513
Wed 16/412:31ASE - SYD
1 stop26h 04mDelta
Sat 3/509:25SYD - ASE
1 stop19h 29mDelta
Deal found 21/2$1,515
Sun 6/715:50DEN - SYD
2 stops23h 30mAir Canada
Sat 19/709:20SYD - DEN
2 stops24h 39mAir Canada
Deal found 20/2$1,554
Mon 7/415:30COS - SYD
2 stops23h 30mUnited Airlines
Mon 14/409:30SYD - COS
2 stops44h 59mUnited Airlines
Deal found 21/2$2,392
Wed 16/416:39COS - SYD
1 stop22h 16mQantas Airways
Wed 30/411:15SYD - COS
2 stops24h 55mQantas Airways
Deal found 20/2$3,180

Find flights from Colorado to Sydney within your budget

Customise 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 647,157 searches. Data last updated 21 February 2025.

Fly from

Colorado

Fly to

Sydney

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 11/3

12:31-06:35

1 stop25h 04m

Sydney Kingsford Smith

Tue 1/4

11:25-19:39

1 stop25h 14m

$1,306

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 6/4

20:19-07:05

1 stop18h 46m

Sydney Kingsford Smith

Sun 20/4

09:10-19:49

1 stop26h 39m

$1,336

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 23/4

13:18-07:05

1 stop25h 47m

Sydney Kingsford Smith

Wed 30/4

17:45-19:49

1 stop18h 04m

$1,369

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Fri 6/6

07:30-06:55

2 stops31h 25m

Sydney Kingsford Smith

Tue 17/6

09:30-13:56

1 stop20h 26m

$1,378

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 23/4

18:40-06:55

1 stop20h 15m

Sydney Kingsford Smith

Wed 30/4

13:15-09:48

2 stops36h 33m

$1,397

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 26/5

19:15-06:35

1 stop19h 20m

Sydney Kingsford Smith

Tue 10/6

09:25-11:33

1 stop18h 08m

$1,461

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 16/4

08:05-06:35

2 stops30h 30m

Sydney Kingsford Smith

Wed 30/4

09:25-19:22

2 stops25h 57m

$1,469

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 25/5

17:40-08:45

2 stops23h 05m

Sydney Kingsford Smith

Sun 8/6

11:50-19:40

2 stops23h 50m

$1,513

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Wed 16/4

12:31-06:35

1 stop26h 04m

Sydney Kingsford Smith

Sat 3/5

09:25-12:54

1 stop19h 29m

$1,515

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 6/7

15:50-07:20

2 stops23h 30m

Sydney Kingsford Smith

Sat 19/7

09:20-17:59

2 stops24h 39m

$1,554

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 25 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 return 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.

Travel insights for flights from Colorado to Sydney

Get recent, data-driven insights about flights from Colorado to Sydney including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Colorado to Sydney?

Currently, May is the cheapest month in which you can book a flight from Colorado to Sydney (average of $129). Flying from Colorado to Sydney in October is currently the most expensive (average of $171). 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 21 February 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 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

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 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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 21 February 2025.
Read through reviews of airlines operating flights from Colorado to Sydney, such as Air Tahiti Nui, Alaska Airlines and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

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
61 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

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
9,697 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

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
8,213 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

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
7.9
Good
460 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

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.

LATAM Airlines
7.5
Good
1,793 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

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 7.5 km from the city centre, 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?

    To fly one-way, consider booking your trip with Qantas Airways, which is currently one of the cheapest options available, starting at $638. American Airlines flights start at $658 while deals on Alaska Airlines start at $666 one-way.

  • What are the most popular routes from Colorado to Sydney?

    The most popular route from Colorado to Sydney is Denver Intl - Sydney Kingsford Smith. You may also consider Aspen Pitkin County - Sydney Kingsford Smith or Colorado Springs - Sydney Kingsford Smith.

  • 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 holiday 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, May is the cheapest month in which you can book a flight from Colorado to Sydney (average of $129). Flying from Colorado to Sydney in October is currently the most expensive (average of $171). 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

Travelling to a place near Colorado?

Book flights to Colorado if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Randwick
Manly
Penrith
Coogee
Cronulla
Terrigal
Bondi Beach
Lithgow
Leura
Swansea

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Top 3 airlines flying from Colorado to Sydney

Discover the top 3 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 647,157 searches. Data last updated 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,011Average$1,470FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Qantas AirwaysCheapest$1,289Average$2,098FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapest$1,965Average$2,554FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Colorado to Sydney?

Cheapflights helps you search for flights from Colorado to Sydney via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Colorado to Sydney?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sydney from Colorado.

Can Cheapflights find flights from Colorado to Sydney with no change fees?

Yes! Cheapflights helps users easily find flights from Colorado to Sydney with no change fees.

Can Cheapflights notify me if prices for flights from Colorado to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Colorado today and book when prices fit your budget.

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