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Cheap flights from Colorado to Sydney from $603

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
28 Feb — 7 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap 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 29 January 2026.

Thu 5/311:56
DEN
-
SYD
2 stops30h 39m
Multiple Airlines
Tue 10/306:00
SYD
-
DEN
2 stops35h 30m
Multiple Airlines
Deal found 28/1$1,159
Wed 18/221:31
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Tue 3/314:00
SYD
-
DEN
2 stops37h 49m
Multiple Airlines
Deal found 29/1$1,328
Tue 17/221:31
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Fri 27/214:00
SYD
-
DEN
2 stops38h 02m
Multiple Airlines
Deal found 28/1$1,329
Wed 18/221:31
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Fri 27/214:00
SYD
-
DEN
2 stops38h 02m
Multiple Airlines
Deal found 28/1$1,339
Tue 17/221:31
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Tue 24/214:00
SYD
-
DEN
2 stops22h 00m
Multiple Airlines
Deal found 28/1$1,346
Mon 23/222:43
DEN
-
SYD
1 stop38h 42m
Multiple Airlines
Mon 9/314:00
SYD
-
DEN
2 stops36h 44m
Multiple Airlines
Deal found 27/1$1,354
Wed 18/221:31
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Wed 4/314:00
SYD
-
DEN
2 stops37h 49m
Multiple Airlines
Deal found 29/1$1,355
Tue 17/221:31
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Thu 26/214:00
SYD
-
DEN
2 stops37h 29m
Multiple Airlines
Deal found 28/1$1,356
Mon 9/322:29
DEN
-
SYD
1 stop39h 56m
Multiple Airlines
Mon 16/314:00
SYD
-
DEN
2 stops27h 30m
Multiple Airlines
Deal found 27/1$1,372
Tue 17/221:31
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Tue 3/314:00
SYD
-
DEN
2 stops37h 49m
Multiple Airlines
Deal found 29/1$1,386
Wed 1/422:30
DEN
-
SYD
1 stop40h 00m
Multiple Airlines
Wed 13/513:10
SYD
-
DEN
2 stops22h 39m
Multiple Airlines
Deal found 27/1$1,399
Sat 14/218:39
ASE
-
SYD
1 stop41h 41m
United Airlines
Wed 18/212:10
SYD
-
ASE
1 stop18h 58m
United Airlines
Deal found 26/1$1,749

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 29 January 2026.

Round-trip from

$1,328

One-way from

$603

Popular in

December

Cheapest in

April

Average price

$1,846
18/2-2/3
  • 18/2-2/3
  • 3 total stops
  • 77h 43m total
  • Colorado to Sydney
Search Deals
10/3
  • 10/3
  • 2 total stops
  • 34h 35m total
  • Colorado to Sydney
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($570 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($101 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 29 January 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

Thu 12/2

08:56-07:25

1 stop28h 29m

Sydney Kingsford Smith

Tue 3/3

14:00-09:49

2 stops37h 49m

$1,466

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 16/2

06:00-07:25

1 stop31h 25m

Sydney Kingsford Smith

Sun 1/3

14:00-09:30

2 stops37h 30m

$1,469

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 12/2

08:56-07:25

1 stop28h 29m

Sydney Kingsford Smith

Wed 4/3

14:00-09:49

2 stops37h 49m

$1,493

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 14/2

22:43-07:25

1 stop38h 42m

Sydney Kingsford Smith

Mon 2/3

14:00-18:05

2 stops22h 05m

$1,528

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 15/2

06:00-07:25

1 stop31h 25m

Sydney Kingsford Smith

Wed 4/3

14:00-09:49

2 stops37h 49m

$1,558

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 13/3

22:29-07:25

1 stop39h 56m

Sydney Kingsford Smith

Fri 20/3

06:00-00:37

2 stops35h 37m

$1,663

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Sat 14/2

18:39-06:20

1 stop41h 41m

Sydney Kingsford Smith

Wed 18/2

12:10-13:08

1 stop18h 58m

$1,749

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 15/5

09:25-07:20

1 stop29h 55m

Sydney Kingsford Smith

Fri 12/6

09:20-23:10

1 stop29h 50m

$1,848

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Sat 14/3

13:51-08:45

2 stops25h 54m

Sydney Kingsford Smith

Sat 21/3

11:45-19:47

2 stops25h 02m

$1,880

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Sat 14/3

18:28-09:05

2 stops21h 37m

Sydney Kingsford Smith

Sat 21/3

10:25-16:17

1 stop22h 52m

$1,882

Flights are sorted by cheapest return flights first.

Deals found on 28/1

Showing 1-10 of 42 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 $942). Flying from Colorado to Sydney in January is currently the most expensive (average of $1,218). 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 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 41h 41m. United Airlines provides one of the quickest options available for as low as $1,749. The distance between Colorado and Sydney is about 13234 km.

  • 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 $942). Flying from Colorado to Sydney in January is currently the most expensive (average of $1,218). 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
Penrith
Manly
Katoomba
Terrigal
Lithgow
Leura
Coogee
Cronulla
Randwick
Bondi Beach

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Top airline flying from Colorado to Sydney

Discover the top airline 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 29 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,174Average$1,893FlexibilityNo 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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