HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sydney

$384+ Cheap flights from Colorado to Sydney (SYD)

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
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado to Sydney with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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

Find flight deals from Colorado to Sydney

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 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 Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/157:42 amCOS - SYD
2 stops33h 03mAir New Zealand
Fri 8/2211:50 amSYD - COS
2 stops25h 43mAir New Zealand
Deal found 7/1$1,339
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/178:00 amCOS - SYD
2 stops30h 35mDelta
Sun 8/249:25 amSYD - COS
2 stops23h 50mDelta
Deal found 7/3$1,516
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/268:10 amASE - SYD
2 stops32h 35mAir New Zealand
Tue 9/29:30 amSYD - ASE
1 stop20h 21mAir New Zealand
Deal found 7/2$1,520
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/55:05 pmCOS - SYD
2 stops22h 30mAir Canada
Sun 11/911:20 amSYD - COS
2 stops21h 09mAir Canada
Deal found 6/30$1,722
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.
Fri 7/1112:05 pmCOS - SYD
2 stops26h 55mUnited Airlines
Fri 7/2510:20 amSYD - COS
2 stops25h 35mUnited Airlines
Deal found 7/1$1,941
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/157:42 amCOS - SYD
2 stops33h 03mMultiple Airlines
Fri 8/2212:10 pmSYD - COS
1 stop22h 10mMultiple Airlines
Deal found 7/1$2,231
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/175:09 pmCOS - SYD
1 stop21h 46mQantas Airways
Sun 8/2412:10 pmSYD - COS
1 stop20h 07mQantas Airways
Deal found 7/3$2,255
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2612:16 pmASE - SYD
1 stop26h 39mQantas Airways
Tue 9/212:10 pmSYD - ASE
1 stop19h 54mQantas Airways
Deal found 7/2$2,300

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated July 3, 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

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

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Fri 8/15

7:42 am-8:45 am

2 stops33h 03m

Sydney Kingsford Smith

Fri 8/22

11:50 am-9:33 pm

2 stops25h 43m

$1,339

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sun 8/17

8:00 am-6:35 am

2 stops30h 35m

Sydney Kingsford Smith

Sun 8/24

9:25 am-5:15 pm

2 stops23h 50m

$1,516

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Tue 8/26

8:10 am-8:45 am

2 stops32h 35m

Sydney Kingsford Smith

Tue 9/2

9:30 am-1:51 pm

1 stop20h 21m

$1,520

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 11/5

5:05 pm-9:35 am

2 stops22h 30m

Sydney Kingsford Smith

Sun 11/9

11:20 am-2:29 pm

2 stops21h 09m

$1,722

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 11/5

7:30 am-7:00 am

1 stop29h 30m

Sydney Kingsford Smith

Sun 11/9

11:50 am-9:51 pm

1 stop28h 01m

$2,012

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Fri 8/15

7:42 am-8:45 am

2 stops33h 03m

Sydney Kingsford Smith

Fri 8/22

12:10 pm-6:20 pm

1 stop22h 10m

$2,231

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 24 results
1
2
3

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 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 Sydney

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

Currently, February is the cheapest month in which you can book a flight from Colorado to Sydney (average of $1,040). Flying from Colorado to Sydney 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 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 July 3, 2025.

When flying from Colorado to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated July 3, 2025.
Read through reviews of airlines operating flights from Colorado to Sydney, such as ANA, Alaska Airlines, and Fiji Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
893 reviews

Entertainment

7.9

Crew

8.7

Food

7.7

Comfort

8.2

Boarding

8.5

Overall

8.4

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

Entertainment

7.9

Crew

8.7

Food

7.7

Comfort

8.2

Boarding

8.5

Overall

8.4

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.
Alaska Airlines
8.0
Very good
10,000 reviews
ANA
8.4
Very good
893 reviews

Entertainment

7.9

Crew

8.7

Food

7.7

Comfort

8.2

Boarding

8.5

Overall

8.4

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

Entertainment

7.9

Crew

8.7

Food

7.7

Comfort

8.2

Boarding

8.5

Overall

8.4

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

Entertainment

7.9

Crew

8.7

Food

7.7

Comfort

8.2

Boarding

8.5

Overall

8.4

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

Entertainment

7.9

Crew

8.7

Food

7.7

Comfort

8.2

Boarding

8.5

Overall

8.4

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 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 4.6 mi from the city center, Sydney Kingsford Smith (SYD) is the airport most travelers will use when flying to Sydney from Colorado.

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

    $384 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Air Canada and Fiji Airways, with prices starting from $625 and $695, respectively.

  • What are the most popular routes from Colorado to Sydney?

    Most travelers choose Denver Intl - Sydney Kingsford Smith, Aspen Pitkin County - Sydney Kingsford Smith or Colorado Springs - Sydney Kingsford Smith when deciding on the best route from Colorado to Sydney.

  • 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 vacation 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, February is the cheapest month in which you can book a flight from Colorado to Sydney (average of $1,040). Flying from Colorado to Sydney 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.

See more FAQs

Traveling to a place near Colorado?

Book flights to Colorado if you plan to visit one of these locations
Wollongong
Parramatta
Manly
Coogee

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.

Alternative routes for Colorado to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Sydney flights
San Francisco to Sydney flights
John F Kennedy Intl to Sydney flights
Newark to Sydney flights
Dallas/Fort Worth to Sydney flights
LaGuardia to Sydney flights
Ontario to Sydney flights
Seattle to Sydney flights
Santa Ana to Sydney flights
Dulles Intl to Sydney flights
O'Hare Intl to Sydney flights
San Jose to Sydney flights
Reagan-National to Sydney flights
Honolulu to Sydney flights
Baltimore to Sydney flights
Boston to Sydney flights
Oakland to Sydney flights
Denver to Sydney flights
Hobby to Sydney flights
Minneapolis to Sydney flights
George Bush Intcntl to Sydney flights
Salt Lake City to Sydney flights
Burbank to Sydney flights
Midway to Sydney flights
Detroit to Sydney flights
Atlanta to Sydney flights
Sky Harbor Intl to Sydney flights
San Diego to Sydney flights
Portland to Sydney flights
Charlotte to Sydney flights
Orlando to Sydney flights
Miami to Sydney flights
Raleigh to Sydney flights
Austin to Sydney flights
Philadelphia to Sydney flights
Love Field to Sydney flights
Tampa to Sydney flights
Indianapolis to Sydney flights
Fort Lauderdale to Sydney flights
Sacramento to Sydney flights
Providence to Sydney flights
Las Vegas to Sydney flights
Columbus to Sydney flights
St. Louis to Sydney flights
Des Moines to Sydney flights
Albuquerque to Sydney flights
Nashville to Sydney flights
Cincinnati to Sydney flights
Memphis to Sydney flights
Kansas City to Sydney flights

Top 7 airlines flying from Colorado to Sydney

Discover the top 7 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 2,558,603 searches. Data last updated July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$768Average$856FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$811Average$915FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$831Average$865FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$834Average$1,373FlexibilityNo cancel feeOn-time78%
DeltaCheapest$837Average$1,217FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$936Average$1,202FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,239Average$1,456FlexibilityNo cancel feeOn-time69%

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.