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$413+ 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Feb 15 — Feb 221
Sun 2/15
Sun 2/22
1 adult, Economy
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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 January 16, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$840
(Trip.com)

One-way from

$413
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$1,291
Provider with most accurate pricing for Denver Intl-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Sydney Kingsford Smith flights.
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From Colorado to Sydney Kingsford Smith
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One-way flight from Colorado to Sydney Kingsford Smith
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Highest demand for flights based on searches. 20% potential increase in price ($284 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($50 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 16, 2026.

This Trip.com deal was found by Cheapflights users on 1/14. 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.
Sat 2/2811:50 am
DEN
-
SYD
2 stops30h 45m
Multiple Airlines
Sat 3/76:00 am
SYD
-
DEN
2 stops36h 30m
Multiple Airlines
Deal found 1/14$840
This Trip.com deal was found by Cheapflights users on 1/14. 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.
Sun 3/16:00 am
DEN
-
SYD
2 stops36h 35m
Multiple Airlines
Sun 3/86:00 am
SYD
-
DEN
2 stops35h 30m
Multiple Airlines
Deal found 1/14$915
This Trip.com deal was found by Cheapflights users on 1/14. 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.
Thu 2/511:00 am
DEN
-
SYD
1 stop28h 00m
Multiple Airlines
Sun 2/157:05 am
SYD
-
DEN
2 stops28h 26m
Multiple Airlines
Deal found 1/14$987
This oojo deal was found by Cheapflights users on 1/13. 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.
Thu 2/1212:59 pm
DEN
-
SYD
1 stop26h 01m
Qantas Airways
Thu 2/197:05 am
SYD
-
DEN
2 stops23h 24m
Qantas Airways
Deal found 1/13$1,082
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 2/109:31 pm
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Fri 2/202:00 pm
SYD
-
DEN
2 stops38h 02m
Multiple Airlines
Deal found 1/14$1,108
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 2/189:31 pm
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Tue 3/176:20 am
SYD
-
DEN
2 stops35h 10m
Multiple Airlines
Deal found 1/15$1,111
This oojo deal was found by Cheapflights users on 1/14. 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.
Wed 2/117:23 pm
DEN
-
SYD
1 stop19h 37m
Qantas Airways
Wed 2/187:05 am
SYD
-
DEN
2 stops30h 09m
Qantas Airways
Deal found 1/14$1,118
This oojo deal was found by Cheapflights users on 1/14. 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.
Tue 3/105:47 pm
DEN
-
SYD
2 stops21h 58m
Air New Zealand
Tue 3/2411:45 am
SYD
-
DEN
2 stops23h 37m
Air New Zealand
Deal found 1/14$1,119
This oojo deal was found by Cheapflights users on 1/14. 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.
Tue 3/33:54 pm
DEN
-
SYD
2 stops24h 36m
Air New Zealand
Tue 3/109:55 am
SYD
-
DEN
2 stops25h 27m
Air New Zealand
Deal found 1/14$1,120
This oojo deal was found by Cheapflights users on 1/14. 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.
Tue 8/255:50 pm
DEN
-
SYD
2 stops24h 50m
Air New Zealand
Tue 9/1511:55 am
SYD
-
DEN
2 stops23h 35m
Air New Zealand
Deal found 1/14$1,122
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 2/189:31 pm
DEN
-
SYD
1 stop39h 54m
Multiple Airlines
Mon 3/1610:15 am
SYD
-
DEN
2 stops40h 29m
Multiple Airlines
Deal found 1/15$1,124
This oojo deal was found by Cheapflights users on 1/14. 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.
Thu 8/138:05 am
ASE
-
SYD
2 stops32h 40m
Air New Zealand
Sat 8/227:20 pm
SYD
-
ASE
2 stops40h 30m
Air New Zealand
Deal found 1/14$1,201

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 January 16, 2026.
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

Sat 2/14

6:39 pm-6:20 am

1 stop41h 41m

Sydney Kingsford Smith

Wed 2/18

11:20 am-12:55 pm

1 stop19h 35m

$1,223

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Sat 2/14

11:36 am-7:00 am

2 stops49h 24m

Sydney Kingsford Smith

Wed 2/18

11:20 am-2:30 pm

2 stops21h 10m

$1,235

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 4/13

9:20 am-7:30 am

1 stop30h 10m

Sydney Kingsford Smith

Wed 4/22

9:05 am-5:48 pm

2 stops48h 43m

$1,253

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 4/10

8:11 pm-7:00 am

1 stop18h 49m

Sydney Kingsford Smith

Mon 4/20

11:55 am-7:40 pm

2 stops23h 45m

$1,314

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 2/6

5:09 pm-7:45 pm

2 stops32h 36m

Sydney Kingsford Smith

Thu 2/19

9:40 pm-5:48 pm

2 stops38h 08m

$1,349

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 2/6

5:09 pm-7:45 pm

2 stops32h 36m

Sydney Kingsford Smith

Sun 2/22

9:40 pm-5:48 pm

2 stops38h 08m

$1,349

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Fri 2/6

5:09 pm-7:45 pm

2 stops32h 36m

Sydney Kingsford Smith

Fri 2/20

9:40 pm-11:59 pm

2 stops44h 19m

$1,349

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/8

5:37 pm-9:05 am

1 stop21h 28m

Sydney Kingsford Smith

Sun 2/22

2:00 pm-2:43 pm

1 stop18h 43m

$1,356

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 2/11

12:34 pm-7:45 pm

2 stops37h 11m

Sydney Kingsford Smith

Thu 2/19

9:40 pm-5:48 pm

2 stops38h 08m

$1,358

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 2/11

12:34 pm-7:45 pm

2 stops37h 11m

Sydney Kingsford Smith

Fri 2/20

9:40 pm-11:38 am

2 stops31h 58m

$1,358

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Showing 1-10 of 22 results
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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 $658). Flying from Colorado to Sydney in January is currently the most expensive (average of $853). 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 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 18h 49m. Fly via United Airlines or Air New Zealand to get the fastest option. There are 8348 mi between Colorado and Sydney. This flight may include one or multiple stops.

  • 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 Qantas Airways and American Airlines, with prices starting from $392 and $404, respectively.

  • 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 $658). Flying from Colorado to Sydney in January is currently the most expensive (average of $853). 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

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Top 8 airlines flying from Colorado to Sydney

Discover the top 8 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 January 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$277Average$1,367FlexibilityNo cancel feeOn-timeN/A
Fiji AirwaysCheapest$684Average$1,356FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$745Average$856FlexibilityNo cancel feeOn-time75%
Qantas AirwaysCheapest$800Average$906FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$825Average$856FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$834Average$1,266FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$853Average$1,459FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$955Average$1,271FlexibilityNo cancel feeOn-time67%

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