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$634+ Cheap flights from Sydney (SYD) to Colorado

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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — DEN
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
1 adult, Economy
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Cheap flight deals from Sydney to Colorado

Cheapest flights from Sydney to Colorado
Explore the most affordable flight options available from Sydney to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 14, 2025.

This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1711:20 amSYD - DEN
1 stop19h 07mUnited Airlines
Sat 1/37:46 pmDEN - SYD
1 stop40h 34mUnited Airlines
Deal found 12/14$1,118
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1411:20 amSYD - DEN
1 stop26h 20mUnited Airlines
Sun 12/283:41 pmDEN - SYD
1 stop21h 19mUnited Airlines
Deal found 12/13$1,177
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/1911:50 amSYD - DEN
1 stop26h 00mUnited Airlines
Sat 1/36:00 pmDEN - SYD
1 stop43h 00mUnited Airlines
Deal found 12/11$1,189
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/2011:20 amSYD - DEN
1 stop24h 59mUnited Airlines
Sat 1/37:48 pmDEN - SYD
1 stop41h 12mUnited Airlines
Deal found 12/11$1,190

Find flight deals from Sydney to Colorado

Keep the following information in mind while searching for Sydney to Colorado flight deals. Data was last updated December 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$954
(BestPriceTravel)

One-way from

$634
(Jetabroad)

Popular in

December

Cheapest in

February

Average price

$1,457
Provider with most accurate pricing for Sydney Kingsford Smith-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Denver Intl flights.
Search Deals
From Sydney Kingsford Smith to Colorado
Search Deals
One-way flight from Sydney Kingsford Smith to Colorado
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($211 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sydney to Colorado 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 December 14, 2025.
Use the filters below to find and compare flights from Sydney to Colorado that are best for you.

Fly from

Sydney

Fly to

Colorado

Route

Depart

Return

Price

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Tue 5/5

11:55 am-7:41 pm

2 stops23h 46m

Denver Intl

Wed 5/20

5:36 pm-10:40 am

2 stops25h 04m

$954

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Tue 1/27

9:40 pm-11:38 am

2 stops31h 58m

Denver Intl

Tue 2/3

5:09 pm-7:45 pm

2 stops32h 36m

$987

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Wed 5/6

11:55 am-7:41 pm

2 stops23h 46m

Denver Intl

Thu 5/21

11:24 am-8:45 am

2 stops29h 21m

$1,000

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Thu 5/28

11:55 am-7:30 pm

2 stops23h 35m

Denver Intl

Wed 8/12

5:52 pm-8:45 am

2 stops22h 53m

$1,001

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Wed 1/28

9:40 pm-10:53 am

2 stops31h 13m

Denver Intl

Wed 2/4

5:09 pm-7:45 pm

2 stops32h 36m

$1,004

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Sat 3/7

1:55 pm-7:40 pm

2 stops23h 45m

Denver Intl

Tue 3/17

4:10 pm-8:45 am

2 stops23h 35m

$1,018

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Sat 3/7

2:00 pm-12:30 am

2 stops28h 30m

Denver Intl

Tue 3/17

9:00 am-12:35 pm

2 stops34h 35m

$1,032

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Thu 2/19

11:20 am-8:53 am

2 stops39h 33m

Denver Intl

Mon 2/23

5:30 pm-9:35 am

2 stops46h 05m

$1,042

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Sun 3/1

7:15 pm-12:28 pm

2 stops35h 13m

Denver Intl

Tue 3/31

7:05 pm-8:20 am

1 stop20h 15m

$1,059

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Tue 1/27

11:20 am-10:23 am

2 stops41h 03m

Denver Intl

Tue 2/3

7:05 pm-9:35 am

1 stop20h 30m

$1,062

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 25 results
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Best time to book a flight from Sydney to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Sydney 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 Sydney to Colorado

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

Currently, March is the cheapest month in which you can book a flight from Sydney to Colorado (average of $591). Flying from Sydney to Colorado in December is currently the most expensive (average of $1,041). 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 SYD to CO?

Find hourly flight availability from Sydney to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 14, 2025.

It’s optimal to fly from Sydney to Colorado at noon. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the morning.

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

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated December 14, 2025.
Read through reviews of airlines operating flights from Sydney to Colorado, such as Qantas Airways, United Airlines, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
946 reviews

Boarding

7.7

Overall

7.5

Entertainment

7.2

Comfort

7.5

Crew

8.1

Food

7.0

Reviews

1 / 20
6.0
Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.
Qantas Airways
7.5
Good
946 reviews
Qantas Airways
7.5
Good
946 reviews

Boarding

7.7

Overall

7.5

Entertainment

7.2

Comfort

7.5

Crew

8.1

Food

7.0

Reviews

1 / 20
6.0
Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.
United Airlines
7.4
Good
9,092 reviews
Qantas Airways
7.5
Good
946 reviews

Boarding

7.7

Overall

7.5

Entertainment

7.2

Comfort

7.5

Crew

8.1

Food

7.0

Reviews

1 / 20
6.0
Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.
American Airlines
7.2
Good
11,051 reviews
Qantas Airways
7.5
Good
946 reviews

Boarding

7.7

Overall

7.5

Entertainment

7.2

Comfort

7.5

Crew

8.1

Food

7.0

Reviews

1 / 20
6.0
Good

Marco,Dec 2025

BOS - LAX

There was no WiFi or tv traveling from LAX to Sydney. Way too long of a flight to have nothing.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Colorado. 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 from for flights from Sydney to Colorado?

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

  • How long is the flight from Sydney to Colorado?

    Departing from Sydney to Colorado will take you 21h 10m. Sydney and Colorado are separated by a distance of 8320 mi. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from Sydney to Colorado are Qantas Airways ($353), United Airlines ($809), and Delta ($820).

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

    The most popular flight routes from Sydney to Colorado are Sydney Kingsford Smith - Denver Intl, Sydney Kingsford Smith - Aspen Pitkin County and Sydney Kingsford Smith - Colorado Springs.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Sydney to Colorado (average of $591). Flying from Sydney to Colorado in December is currently the most expensive (average of $1,041). 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

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Alternative routes for Sydney to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Sydney to Colorado

Discover the top 3 airlines that operate flights from Sydney to Colorado. 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 December 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$693Average$787FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$775Average$1,204FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$977Average$1,529FlexibilityNo cancel feeOn-time69%

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