HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sydney

$410+ 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$1,065
(Trip.com)

One-way from

$410
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$1,310
Provider with most accurate pricing for Denver Intl-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Sydney Kingsford Smith flights.
Search Deals
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. 20% potential increase in price ($269 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/257:51 amDEN - SYD
1 stop29h 34mMultiple Airlines
Tue 12/25:45 pmSYD - DEN
1 stop34h 27mMultiple Airlines
Deal found 10/28$1,080
This Trip.com deal was found by Cheapflights users on 10/29. 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.
Wed 11/267:51 amDEN - SYD
1 stop31h 09mMultiple Airlines
Fri 12/55:45 pmSYD - DEN
1 stop24h 32mMultiple Airlines
Deal found 10/29$1,105
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2712:24 pmDEN - SYD
1 stop25h 01mMultiple Airlines
Thu 12/45:45 pmSYD - DEN
1 stop24h 32mMultiple Airlines
Deal found 10/29$1,134
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:00 amDEN - SYD
2 stops31h 25mMultiple Airlines
Wed 11/195:45 pmSYD - DEN
1 stop18h 40mMultiple Airlines
Deal found 10/28$1,136
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/411:45 amDEN - SYD
1 stop25h 40mMultiple Airlines
Mon 11/105:45 pmSYD - DEN
2 stops22h 04mMultiple Airlines
Deal found 10/29$1,143
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/267:51 amDEN - SYD
1 stop29h 34mMultiple Airlines
Wed 12/35:45 pmSYD - DEN
2 stops22h 44mMultiple Airlines
Deal found 10/27$1,145
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/269:44 amDEN - SYD
2 stops40h 31mMultiple Airlines
Thu 12/45:45 pmSYD - DEN
1 stop24h 32mMultiple Airlines
Deal found 10/29$1,147
This Delta deal was found by Cheapflights users on 10/28. 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.
Thu 11/1312:01 pmASE - SYD
1 stop26h 29mDelta
Mon 11/1710:40 amSYD - ASE
1 stop19h 42mDelta
Deal found 10/28$1,213
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Thu 11/131:40 pmASE - SYD
1 stop25h 25mUnited Airlines
Mon 11/1711:20 amSYD - ASE
1 stop19h 16mUnited Airlines
Deal found 10/29$1,313
This American Airlines deal was found by Cheapflights users on 10/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:37 amCOS - SYD
2 stops26h 48mAmerican Airlines
Fri 12/1911:20 amSYD - COS
2 stops27h 11mAmerican Airlines
Deal found 10/28$1,726
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Sat 12/133:33 pmCOS - SYD
2 stops47h 32mUnited Airlines
Sat 12/2012:10 pmSYD - COS
2 stops20h 47mUnited Airlines
Deal found 10/29$1,934
This American Airlines deal was found by Cheapflights users on 10/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1312:45 pmCOS - SYD
1 stop24h 10mAmerican Airlines
Sat 12/202:05 pmSYD - COS
1 stop24h 26mAmerican Airlines
Deal found 10/29$3,597

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 October 30, 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

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 11/13

12:01 pm-8:30 am

1 stop26h 29m

Sydney Kingsford Smith

Mon 11/17

10:40 am-12:22 pm

1 stop19h 42m

$1,213

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 11/13

1:40 pm-9:05 am

1 stop25h 25m

Sydney Kingsford Smith

Mon 11/17

11:20 am-12:36 pm

1 stop19h 16m

$1,313

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 1/14

10:21 am-7:25 am

2 stops27h 04m

Sydney Kingsford Smith

Mon 3/16

11:20 am-8:09 pm

2 stops25h 49m

$1,326

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 1/10

5:09 pm-7:45 pm

2 stops32h 36m

Sydney Kingsford Smith

Thu 1/15

9:40 pm-10:53 am

2 stops31h 13m

$1,351

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 1/20

5:37 pm-9:05 am

1 stop21h 28m

Sydney Kingsford Smith

Tue 2/24

11:20 am-12:28 pm

1 stop19h 08m

$1,359

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 12/30

7:10 am-8:30 am

2 stops31h 20m

Sydney Kingsford Smith

Tue 1/13

2:15 pm-7:56 pm

2 stops23h 41m

$1,366

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 4/18

9:25 pm-7:00 am

1 stop41h 35m

Sydney Kingsford Smith

Tue 4/28

10:20 am-12:18 pm

1 stop17h 58m

$1,369

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 4/18

9:25 pm-7:00 am

1 stop41h 35m

Sydney Kingsford Smith

Mon 4/27

10:20 am-12:18 pm

1 stop17h 58m

$1,369

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 1/17

9:05 pm-6:20 am

1 stop39h 15m

Sydney Kingsford Smith

Tue 3/24

11:50 am-11:40 pm

1 stop28h 50m

$1,370

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 1/17

9:05 pm-6:20 am

1 stop39h 15m

Sydney Kingsford Smith

Wed 2/18

12:10 pm-12:18 pm

1 stop18h 08m

$1,370

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 33 results
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 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, June is the cheapest month in which you can book a flight from Colorado to Sydney (average of $680). Flying from Colorado to Sydney in January is currently the most expensive (average of $861). 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 October 30, 2025.

It’s typically best to fly out from Colorado to Sydney in the evening. Doing so could potentially save you 28% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Colorado to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Colorado to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Colorado to Sydney flight should consider departing on Saturday at noon when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Colorado to Sydney?

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.

  • How long is the flight from Colorado to Sydney?

    There are many flights that can get you from Colorado to Sydney in 25h 25m. Fly via Delta, United Airlines, or American Airlines to get the fastest option. There are 8223 mi between Colorado and Sydney. This flight may include one or multiple stops.

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

    Most travelers choose Denver Intl - Sydney Kingsford Smith, Colorado Springs - Sydney Kingsford Smith or Aspen Pitkin County - 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, June is the cheapest month in which you can book a flight from Colorado to Sydney (average of $680). Flying from Colorado to Sydney in January is currently the most expensive (average of $861). 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 Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
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
Hobby to Sydney flights
George Bush Intcntl to Sydney flights
Dulles Intl to Sydney flights
Ontario to Sydney flights
Seattle to Sydney flights
Santa Ana to Sydney flights
Honolulu to Sydney flights
O'Hare Intl to Sydney flights
Reagan-National to Sydney flights
Boston to Sydney flights
Baltimore to Sydney flights
Atlanta to Sydney flights
Denver to Sydney flights
Sky Harbor Intl to Sydney flights
Midway to Sydney flights
San Jose to Sydney flights
Portland to Sydney flights
Minneapolis to Sydney flights
Oakland to Sydney flights
San Diego to Sydney flights
Detroit to Sydney flights
Philadelphia to Sydney flights
Austin to Sydney flights
Miami to Sydney flights
Orlando to Sydney flights
Raleigh to Sydney flights
Charlotte to Sydney flights
Tampa to Sydney flights
Indianapolis to Sydney flights
Salt Lake City to Sydney flights
Love Field to Sydney flights
Cincinnati to Sydney flights
Jacksonville to Sydney flights
Nashville to Sydney flights
Fort Lauderdale to Sydney flights
Las Vegas to Sydney flights
St. Louis to Sydney flights
Long Beach to Sydney flights
Memphis to Sydney flights
Knoxville to Sydney flights
Sacramento to Sydney flights
Kansas City to Sydney flights
San Antonio to Sydney flights
Fort Myers 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
DeltaCheapest$786Average$1,380FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$806Average$902FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$832Average$865FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$834Average$1,251FlexibilityNo cancel feeOn-time78%
Air CanadaCheapest$1,009Average$1,272FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,310Average$1,467FlexibilityNo 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.