Find flights
When to book
FAQs

Cheap flights from Colorado to Sydney from $604

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
31 Mar — 7 Apr1
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 1 March 2026.

Wed 9/912:00
ASE
-
SYD
1 stop26h 50m
Delta
Wed 30/909:15
SYD
-
ASE
1 stop26h 48m
Delta
Deal found 26/2$1,497
Tue 14/412:18
ASE
-
SYD
1 stop26h 32m
Delta
Tue 21/409:15
SYD
-
ASE
1 stop19h 30m
Delta
Deal found 27/2$1,499
Wed 9/918:58
ASE
-
SYD
1 stop20h 02m
United Airlines
Wed 30/909:30
SYD
-
ASE
2 stops20h 51m
United Airlines
Deal found 26/2$1,504
Mon 27/422:29
DEN
-
SYD
2 stops45h 21m
Multiple Airlines
Tue 12/517:50
SYD
-
DEN
1 stop32h 57m
Multiple Airlines
Deal found 25/2$1,520
Mon 27/406:00
DEN
-
SYD
2 stops38h 05m
Multiple Airlines
Tue 5/517:50
SYD
-
DEN
1 stop32h 57m
Multiple Airlines
Deal found 27/2$1,523
Fri 1/522:29
DEN
-
SYD
2 stops45h 21m
Multiple Airlines
Fri 8/517:50
SYD
-
DEN
1 stop31h 55m
Multiple Airlines
Deal found 27/2$1,537
Mon 20/422:29
DEN
-
SYD
2 stops45h 21m
Multiple Airlines
Mon 4/517:50
SYD
-
DEN
1 stop32h 57m
Multiple Airlines
Deal found 25/2$1,548
Tue 14/421:30
DEN
-
SYD
1 stop42h 00m
Multiple Airlines
Tue 21/417:50
SYD
-
DEN
1 stop32h 57m
Multiple Airlines
Deal found 28/2$1,549
Sat 28/217:33
ASE
-
SYD
1 stop21h 32m
United Airlines
Wed 4/311:20
SYD
-
ASE
1 stop19h 35m
United Airlines
Deal found 26/2$1,555
Wed 25/319:05
DEN
-
SYD
1 stop20h 30m
Air Canada
Tue 7/409:20
SYD
-
DEN
1 stop19h 15m
Air Canada
Deal found 27/2$1,558
Tue 12/519:50
DEN
-
SYD
1 stop19h 30m
Air Canada
Tue 26/509:20
SYD
-
DEN
1 stop23h 40m
Air Canada
Deal found 1/3$1,559
Sat 16/518:10
DEN
-
SYD
2 stops45h 10m
Air Canada
Tue 26/509:20
SYD
-
DEN
1 stop29h 50m
Air Canada
Deal found 26/2$1,569

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 1 March 2026.

Round-trip from

$1,499

One-way from

$604

Popular in

December

Cheapest in

April

Average price

$1,556
Delta
  • Delta
  • 14/4-21/4
  • 2 total stops
  • 46h 02m total
  • Colorado to Sydney
Search Deals
27/4
  • 27/4
  • 2 total stops
  • 38h 05m total
  • Colorado to Sydney
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($463 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 March 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 1 March 2026.
Use the filters below to find and compare flights from Colorado to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Tue 14/4

12:18-06:50

1 stop26h 32m

Sydney Kingsford Smith

Tue 21/4

09:15-12:45

1 stop19h 30m

$1,499

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Tue 14/4

15:29-07:00

2 stops23h 31m

Sydney Kingsford Smith

Tue 21/4

10:20-14:40

2 stops20h 20m

$1,504

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Fri 29/5

19:15-07:00

1 stop19h 45m

Sydney Kingsford Smith

Mon 15/6

09:30-17:26

2 stops23h 56m

$1,562

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Mon 13/4

15:26-07:00

2 stops23h 34m

Sydney Kingsford Smith

Mon 27/4

09:30-16:32

2 stops23h 02m

$1,598

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 13/8

12:00-06:50

1 stop26h 50m

Sydney Kingsford Smith

Sat 22/8

09:15-20:03

1 stop26h 48m

$1,611

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 13/8

20:00-07:00

1 stop19h 00m

Sydney Kingsford Smith

Sat 22/8

09:30-14:15

1 stop20h 45m

$1,611

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 13/3

15:36-08:05

2 stops23h 29m

Sydney Kingsford Smith

Sun 22/3

10:20-14:55

2 stops21h 35m

$1,985

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 13/6

21:20-07:00

1 stop41h 40m

Sydney Kingsford Smith

Fri 26/6

09:30-14:27

1 stop20h 57m

$1,990

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Tue 25/8

12:51-07:00

2 stops26h 09m

Sydney Kingsford Smith

Sun 6/9

10:20-17:51

2 stops23h 31m

$2,021

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 13/3

20:00-08:05

1 stop19h 05m

Sydney Kingsford Smith

Sat 21/3

12:10-16:45

1 stop21h 35m

$2,066

Flights are sorted by cheapest return flights first.

Deals found on 28/2

Showing 1-10 of 31 resultsSorted by cheapest first
1
2
3
4

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, September is the cheapest month in which you can book a flight from Colorado to Sydney (average of $426). Flying from Colorado to Sydney in January is currently the most expensive (average of $1,396). 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 23h 31m. Delta provides one of the quickest options available for as low as $1,504. 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 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, September is the cheapest month in which you can book a flight from Colorado to Sydney (average of $426). Flying from Colorado to Sydney in January is currently the most expensive (average of $1,396). 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
Katoomba
Manly
Terrigal
Lithgow
Bondi Beach
Leura
Coogee
Cronulla
Randwick

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 1 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,268Average$1,922FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.