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$384+ Cheap flights from Colorado to Australia

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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Colorado to Australia

Keep the following information in mind while searching for Colorado to Australia flight deals. Data was last updated July 3, 2025.

Round-trip from

$732
(Aunt Betty)

One-way from

$384
(Alaska Airlines)

Popular in

December

Cheapest in

April

Average price

$1,316
From Colorado to Australia
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One-way flight from Colorado to Australia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($173 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Colorado to Australia

Cheapest flights from Colorado to Australia
Explore the most affordable flight options available from Colorado to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Aunt Betty deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/46:00 amDEN - SYD
1 stop33h 05mAlaska Airlines
Tue 8/199:10 amSYD - DEN
2 stops25h 00mAlaska Airlines
Deal found 6/30$732
This Trip.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/47:00 amDEN - SYD
2 stops32h 05mMultiple Airlines
Tue 8/199:10 amSYD - DEN
2 stops34h 50mMultiple Airlines
Deal found 6/30$983
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/412:05 pmASE - SYD
1 stop26h 30mDelta
Wed 8/209:25 amSYD - ASE
1 stop24h 26mDelta
Deal found 7/2$1,181
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/41:30 pmASE - SYD
2 stops25h 25mUnited Airlines
Wed 8/209:30 amSYD - ASE
2 stops24h 49mUnited Airlines
Deal found 7/1$1,185
This Air Canada deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/57:05 pmDEN - MEL
2 stops24h 00mAir Canada
Tue 8/196:00 amMEL - DEN
2 stops26h 40mAir Canada
Deal found 7/2$1,187
This oojo deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/183:40 pmDEN - MEL
2 stops27h 10mAir New Zealand
Sun 8/318:35 amMEL - DEN
2 stops21h 52mAir New Zealand
Deal found 7/1$1,196
This oojo deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/210:05 amDEN - BNE
2 stops30h 50mAir New Zealand
Wed 11/1911:10 amBNE - DEN
2 stops23h 48mAir New Zealand
Deal found 7/1$1,222
This FlightHub deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/267:05 pmDEN - MEL
2 stops27h 05mMultiple Airlines
Wed 9/106:00 amMEL - DEN
2 stops26h 33mMultiple Airlines
Deal found 7/3$1,225
This Travelocity deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/127:49 pmDEN - CBR
2 stops23h 11mMultiple Airlines
Sat 9/274:25 pmCBR - DEN
2 stops42h 58mMultiple Airlines
Deal found 7/2$1,250
This oojo deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/115:59 pmDEN - BNE
2 stops24h 36mFiji Airways
Thu 8/1411:40 amBNE - DEN
2 stops24h 09mFiji Airways
Deal found 7/3$1,267
This Air Canada deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/114:17 pmDEN - BNE
1 stop22h 48mAir Canada
Thu 8/1410:20 amBNE - DEN
1 stop22h 20mAir Canada
Deal found 7/3$1,275
This Ovago deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:44 pmDEN - CNS
2 stops24h 56mFiji Airways
Mon 10/1312:40 pmCNS - DEN
2 stops26h 49mFiji Airways
Deal found 7/1$1,309

Cheapflights Fare Finder

Customize your flight search to find flights from Colorado to Australia 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 2,558,603 searches. Data last updated July 3, 2025.
Use the filters below to find and compare flights from Colorado to Australia that are best for you.

Fly from

Colorado

Fly to

Australia

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 8/4

6:00 am-7:05 am

1 stop33h 05m

Sydney Kingsford Smith

Tue 8/19

9:10 am-6:10 pm

2 stops25h 00m

$732

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 8/4

7:00 am-7:05 am

2 stops32h 05m

Sydney Kingsford Smith

Tue 8/19

9:10 am-4:00 am

2 stops34h 50m

$983

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Mon 8/4

12:05 pm-6:35 am

1 stop26h 30m

Sydney Kingsford Smith

Wed 8/20

9:25 am-5:51 pm

1 stop24h 26m

$1,181

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Mon 8/4

1:30 pm-6:55 am

2 stops25h 25m

Sydney Kingsford Smith

Wed 8/20

9:30 am-6:19 pm

2 stops24h 49m

$1,185

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Tue 8/5

7:05 pm-11:05 am

2 stops24h 00m

Melbourne

Tue 8/19

6:00 am-4:40 pm

2 stops26h 40m

$1,187

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Mon 8/18

3:40 pm-10:50 am

2 stops27h 10m

Melbourne

Sun 8/31

8:35 am-2:27 pm

2 stops21h 52m

$1,196

DenverMelbourne

DEN - MEL

DENMEL

Denver Intl

Tue 8/26

7:05 pm-2:10 pm

2 stops27h 05m

Melbourne

Wed 9/10

6:00 am-4:33 pm

2 stops26h 33m

$1,225

DenverCanberra

DEN - CBR

DENCBR

Denver Intl

Fri 9/12

7:49 pm-11:00 am

2 stops23h 11m

Canberra

Sat 9/27

4:25 pm-7:23 pm

2 stops42h 58m

$1,250

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Mon 8/11

5:59 pm-10:35 am

2 stops24h 36m

Brisbane

Thu 8/14

11:40 am-7:49 pm

2 stops24h 09m

$1,267

DenverBrisbane

DEN - BNE

DENBNE

Denver Intl

Mon 8/11

4:17 pm-7:05 am

1 stop22h 48m

Brisbane

Thu 8/14

10:20 am-4:40 pm

1 stop22h 20m

$1,275

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 46 results
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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
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 Australia

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

Currently, February is the cheapest month in which you can book a flight from Colorado to Australia (average of $1,040). Flying from Colorado to Australia in December is currently the most expensive (average of $1,630). 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 AU?

Find hourly flight availability from Colorado to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Australia as you normally would.

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. 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 Australia. Reviews last updated July 3, 2025.
Get a feel of what it's like to fly with ANA, Singapore Airlines, and Fiji Airways from Colorado to Australia by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Comfort

8.2

Food

7.7

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
ANA
8.4
Very good
893 reviews
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Comfort

8.2

Food

7.7

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Singapore Airlines
8.1
Very good
1,320 reviews
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Comfort

8.2

Food

7.7

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Fiji Airways
8.0
Very good
202 reviews
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Comfort

8.2

Food

7.7

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Delta
8.0
Very good
7,982 reviews
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Comfort

8.2

Food

7.7

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Air New Zealand
8.0
Very good
486 reviews
ANA
8.4
Very good
893 reviews

Boarding

8.5

Entertainment

7.9

Comfort

8.2

Food

7.7

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $384. However, be on the lookout for offers from Air Canada and Fiji Airways, 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, February is the cheapest month in which you can book a flight from Colorado to Australia (average of $1,040). Flying from Colorado to Australia in December is currently the most expensive (average of $1,630). 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.

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Alternative routes for Colorado to Australia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Colorado to Australia

Discover the top 8 airlines that operate flights from Colorado to Australia. 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 2,558,603 searches. Data last updated July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$645Average$1,269FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$695Average$1,006FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$768Average$856FlexibilityNo cancel feeOn-time75%
Air New ZealandCheapest$834Average$1,490FlexibilityNo cancel feeOn-time78%
DeltaCheapest$837Average$1,217FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$936Average$1,291FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,157Average$1,558FlexibilityNo cancel feeOn-time69%
Fiji AirwaysCheapest$1,159Average$1,283FlexibilityNo cancel feeOn-time74%

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