Australia

$570+ Cheap flights from Colorado to Australia

DEN — SYD
Dec 8 — Dec 151
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Cheap flight deals from Colorado to Australia

Cheapest flights from Colorado to Australia

Thu 12/2410:48 pm -
1 stop38h 02m
Sun 1/2411:50 am -
2 stops38h 41m
Deal found 11/4$1,125
Wed 12/21:54 pm -
1 stop25h 36m
Sat 12/126:45 am -
2 stops31h 00m
Deal found 11/7$1,148
Thu 11/512:54 pm -
1 stop23h 31m
Wed 11/112:00 pm -
2 stops21h 35m
Deal found 11/3$1,241
Fri 12/45:19 pm -
2 stops25h 06m
Fri 12/111:55 pm -
2 stops28h 13m
Deal found 11/3$1,242
Tue 12/11:54 pm -
1 stop22h 31m
Tue 12/811:15 am -
1 stop22h 38m
Deal found 11/7$1,262
Mon 11/237:55 am -
2 stops33h 00m
Wed 1/138:15 am -
2 stops27h 59m
Deal found 11/8$1,277
Thu 11/57:25 pm -
2 stops43h 10m
Wed 11/1111:50 am -
2 stops24h 06m
Deal found 11/3$1,301
Wed 12/27:04 pm -
2 stops24h 46m
Thu 12/241:10 pm -
1 stop23h 20m
Deal found 11/3$1,324
Sat 11/287:55 am -
2 stops30h 40m
Fri 12/189:55 am -
2 stops24h 35m
Deal found 11/3$1,339
Fri 12/41:35 pm -
2 stops27h 00m
Fri 12/112:05 pm -
2 stops21h 49m
Deal found 11/3$1,340
Wed 12/27:55 am -
2 stops30h 05m
Thu 12/246:10 pm -
2 stops39h 20m
Deal found 11/5$1,358
Sun 11/82:14 pm -
2 stops24h 46m
Mon 11/2311:15 am -
2 stops40h 28m
Deal found 11/4$1,405

Find flight deals from Colorado to Australia

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$932
(Kiwi.com)

One-way from

$570
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$1,374
Provider with most accurate pricing for Denver Intl-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Denver Intl-Sydney Kingsford Smith flights.
From Colorado to Australia
One-way flight from Colorado to Australia
Highest demand for flights based on searches. 18% potential increase in price ($306 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($64 potential savings vs. average RT price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Colorado to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 2/1

9:20 am-9:00 am

1 stop29h 40m

Sydney Kingsford Smith

Wed 12/31

12:00 am-7:00 am

Nonstop0h 00m

$589

DenverMelbourne

DEN Denver Intl - MEL Melbourne

DENMEL

Denver Intl

Fri 2/12

2:22 pm-9:30 am

1 stop25h 08m

Melbourne

Wed 12/31

12:00 am-7:00 am

Nonstop0h 00m

$621

DenverBrisbane

DEN Denver Intl - BNE Brisbane

DENBNE

Denver Intl

Fri 12/4

9:12 am-5:50 am

1 stop27h 38m

Brisbane

Wed 12/31

12:00 am-7:00 am

Nonstop0h 00m

$657
Quickest round-trip

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Thu 12/31

2:31 pm-6:25 am

1 stop21h 54m

Sydney Kingsford Smith

Wed 12/31

12:00 am-7:00 am

Nonstop0h 00m

$673

DenverPerth

DEN Denver Intl - PER Perth

DENPER

Denver Intl

Mon 4/12

7:00 am-6:50 am

2 stops33h 50m

Perth

Wed 12/31

12:00 am-9:00 am

Nonstop0h 00m

$748

DenverSydney

DEN Denver Intl - WSI Western Sydney Intl (Nancy-Bird Walton)

DENWSI

Denver Intl

Mon 3/1

10:29 pm-1:30 pm

3 stops45h 01m

Western Sydney Intl (Nancy-Bird Walton)

Wed 12/31

12:00 am-7:00 am

Nonstop0h 00m

$785

DenverSydney

DEN Denver Intl - WSI Western Sydney Intl (Nancy-Bird Walton)

DENWSI

Denver Intl

Mon 3/29

2:22 pm-1:30 pm

2 stops30h 08m

Western Sydney Intl (Nancy-Bird Walton)

Wed 12/31

12:00 am-7:00 am

Nonstop0h 00m

$789

DenverAdelaide

DEN Denver Intl - ADL Adelaide

DENADL

Denver Intl

Fri 12/11

10:57 pm-12:15 pm

2 stops43h 48m

Adelaide

Wed 12/31

12:00 am-7:30 am

Nonstop0h 00m

$824

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Fri 1/1

6:00 am-6:25 am

2 stops30h 25m

Sydney Kingsford Smith

Wed 12/31

12:00 am-7:00 am

Nonstop0h 00m

$836

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Wed 12/30

7:30 pm-7:25 pm

2 stops53h 55m

Sydney Kingsford Smith

Wed 12/31

12:00 am-7:00 am

Nonstop0h 00m

$845

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Colorado to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Colorado with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Colorado to Australia

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

Currently, April is the cheapest month in which you can book a flight from Colorado to Australia (average of $1,172). Flying from Colorado to Australia in December is currently the most expensive (average of $2,207). 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.

How far ahead should I book a flight from Colorado to Australia?

Booking 25 days in advance of your planned departure date is, on average, the best time to get cheap flights from Colorado to Australia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

  • How long is the flight from Colorado to Australia?

    For as low as $1,587, Air New Zealand can have you in Australia from Colorado in 24h 26m. The distance from Colorado to Australia is about 8223 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Colorado to Australia one-way?

    The cheapest airline one-way is Qantas Airways, with whom users have recently found tickets for as low as $480. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Colorado to Australia for a low price.

  • Can I find deals for flights from Colorado to Australia that include hotel bookings?

    Yes. In addition to deals on Colorado to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Australia.

  • Can I find deals for business class flights from Colorado to Australia?

    Yes. Cheapflights offers flight deals from Colorado to Australia 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 Australia?

    Currently, April is the cheapest month in which you can book a flight from Colorado to Australia (average of $1,172). Flying from Colorado to Australia in December is currently the most expensive (average of $2,207). 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

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from Colorado to Australia

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$572FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$682Average$741FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$827Average$1,355FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$853Average$1,558FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$895Average$1,687FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$958Average$1,455FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,033Average$1,358FlexibilityNo cancel feeOn-time78%

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