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Cheap flights from Colorado to Sydney from $648

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 18/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
18 Dec — 25 Dec1
1 adult
1 adult, Economy, 0 bags

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 18 November 2025.

Round-trip from

$1,474

One-way from

$648

Popular in

December

Cheapest in

April

Average price

$1,942
1/12-6/12
  • 1/12-6/12
  • 4 total stops
  • 56h 28m total
  • Colorado to Sydney
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18/2
  • 18/2
  • 2 total stops
  • 45h 20m total
  • Colorado to Sydney
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($463 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($80 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Colorado to Sydney

Enter your travel dates to find the best prices.

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 18 November 2025.

Mon 1/1210:08DEN - SYD
2 stops28h 52mMultiple Airlines
Sat 6/1207:05SYD - DEN
2 stops27h 36mMultiple Airlines
Deal found 16/11$1,474
Sat 6/1209:30DEN - SYD
2 stops27h 55mMultiple Airlines
Fri 16/111:20SYD - DEN
1 stop30h 45mMultiple Airlines
Deal found 17/11$1,538
Tue 30/1206:35DEN - SYD
2 stops30h 50mMultiple Airlines
Wed 14/117:45SYD - DEN
2 stops28h 11mMultiple Airlines
Deal found 16/11$1,627
Sat 6/1209:30DEN - SYD
2 stops27h 55mMultiple Airlines
Sun 21/1217:45SYD - DEN
1 stop34h 21mMultiple Airlines
Deal found 17/11$1,785
Sun 7/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Wed 14/106:00SYD - DEN
2 stops29h 24mMultiple Airlines
Deal found 17/11$1,804
Sun 7/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Tue 13/121:40SYD - DEN
2 stops30h 56mMultiple Airlines
Deal found 17/11$1,813
Sun 7/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Mon 19/122:10SYD - DEN
2 stops39h 01mMultiple Airlines
Deal found 17/11$1,822

Cheapflights Fare Finder

 
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 18 November 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

Sun 7/12

06:00-07:25

1 stop31h 25m

Sydney Kingsford Smith

Wed 14/1

06:00-17:24

2 stops29h 24m

$1,804

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 30/1

17:09-19:45

2 stops32h 36m

Sydney Kingsford Smith

Sun 8/2

21:40-11:38

2 stops31h 58m

$2,025

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 25/1

19:39-19:45

2 stops54h 06m

Sydney Kingsford Smith

Sun 8/2

21:40-11:38

2 stops31h 58m

$2,037

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 25/1

19:39-19:45

2 stops54h 06m

Sydney Kingsford Smith

Sat 7/2

21:40-11:38

2 stops31h 58m

$2,037

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 30/1

17:09-19:45

2 stops32h 36m

Sydney Kingsford Smith

Fri 13/2

21:40-10:42

2 stops31h 02m

$2,046

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Mon 2/2

07:30-07:00

1 stop29h 30m

Sydney Kingsford Smith

Fri 20/2

11:50-21:44

1 stop27h 54m

$2,060

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 4/3

20:04-09:00

1 stop18h 56m

Sydney Kingsford Smith

Wed 11/3

17:45-19:20

1 stop18h 35m

$2,065

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 2/4

13:37-07:35

1 stop24h 58m

Sydney Kingsford Smith

Mon 6/4

09:25-14:03

1 stop20h 38m

$2,068

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 4/12

11:41-19:45

2 stops38h 04m

Sydney Kingsford Smith

Fri 16/1

21:40-11:38

2 stops31h 58m

$2,070

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 4/12

11:41-19:45

2 stops38h 04m

Sydney Kingsford Smith

Tue 13/1

21:40-11:38

2 stops31h 58m

$2,070

Flights are sorted by cheapest return flights first.

Deals found on 17/11

Showing 1-10 of 40 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.

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 $1,027). Flying from Colorado to Sydney in January is currently the most expensive (average of $1,320). 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 18 November 2025.

When flying from Colorado to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 32% versus a flight in the evening.

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.

  • How long is the flight from Colorado to Sydney?

    A quick flight from Colorado to Sydney can take about 24h 58m. Alaska Airlines provides one of the quickest options available for as low as $2,068. The distance between Colorado and Sydney is about 13234 km. This flight may include one or multiple stops.

  • 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 Colorado Springs - Sydney Kingsford Smith or Aspen Pitkin County - 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, June is the cheapest month in which you can book a flight from Colorado to Sydney (average of $1,027). Flying from Colorado to Sydney in January is currently the most expensive (average of $1,320). 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 Sydney?

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

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Top 2 airlines flying from Colorado to Sydney

Discover the top 2 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 18 November 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$306Average$1,429FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Qantas AirwaysCheapest$1,015Average$1,989FlexibilityNo cancel feeOn-time74%
Search Qantas Airways 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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