$384 Find Cheap Flights from Sydney to Colorado - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sydney to Colorado departing on 8/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Sydney to Colorado

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Denver
Denver1 stop$795
Aspen
Aspen2 stops$968
Denver
Denver1 stop$795
Aspen
Aspen2 stops$968

Book Cheap Sydney to Colorado Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sydney to Colorado that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sydney to Colorado

Thu, Nov 5 - Mon, Nov 9
Air Canada Logo
11:20 am - 4:24 pm
SYD
-
COS
23h 04m
2 stops
Air Canada Logo
9:24 am - 9:35 am
COS
-
SYD
30h 11m
2 stops
$742Air Canada
Thu, Nov 5 - Mon, Nov 9
Air Canada Logo
11:20 am - 4:24 pm
SYD
-
COS
23h 04m
2 stops
Air Canada Logo
11:34 am - 9:35 am
COS
-
SYD
28h 01m
2 stops
$745Air Canada
Wed, Sep 9 - Wed, Sep 16
Air Canada Logo
9:20 am - 7:33 pm
SYD
-
DEN
26h 13m
1 stop
Air Canada Logo
1:35 pm - 7:20 am
DEN
-
SYD
25h 45m
2 stops
$795Air Canada
Wed, Sep 9 - Wed, Sep 16
Air Canada Logo
9:20 am - 11:08 pm
SYD
-
DEN
29h 48m
1 stop
Air Canada Logo
7:50 pm - 7:20 am
DEN
-
SYD
19h 30m
1 stop
$795Air Canada
Wed, Sep 9 - Wed, Sep 16
Air Canada Logo
9:20 am - 11:08 pm
SYD
-
DEN
29h 48m
1 stop
Air Canada Logo
9:10 am - 7:20 am
DEN
-
SYD
30h 10m
1 stop
$797Air Canada
Wed, Sep 9 - Wed, Sep 16
Air Canada Logo
9:20 am - 4:10 pm
SYD
-
DEN
22h 50m
2 stops
Air Canada Logo
1:35 pm - 7:20 am
DEN
-
SYD
25h 45m
2 stops
$801Air Canada
Wed, Sep 9 - Wed, Sep 16
Air Canada Logo
9:20 am - 4:10 pm
SYD
-
DEN
22h 50m
2 stops
Air Canada Logo
9:10 am - 7:20 am
DEN
-
SYD
30h 10m
1 stop
$803Air Canada
Mon, Aug 17 - Mon, Nov 9
Air Canada Logo
9:20 am - 11:52 pm
SYD
-
DEN
30h 32m
1 stop
Air Canada Logo
11:48 am - 9:35 am
DEN
-
SYD
27h 47m
1 stop
$805Air Canada
Thu, Nov 5 - Mon, Nov 9
United Airlines Logo
9:20 am - 11:19 am
SYD
-
COS
19h 59m
1 stop
United Airlines Logo
12:02 pm - 7:00 am
COS
-
SYD
48h 58m
2 stops
$983United Airlines
Wed, Sep 30 - Mon, Oct 12
United Airlines Logo
9:30 am - 1:31 pm
SYD
-
ASE
20h 01m
1 stop
United Airlines Logo
8:30 am - 8:00 am
ASE
-
SYD
30h 30m
2 stops
$988United Airlines
Booking Insights

KAYAK's insights & trends for Sydney to Colorado flights

Get data-powered insights and trends into flights from Sydney to Colorado to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Sydney to Colorado?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Sydney to Colorado departing in September.

Flight prices are below average for this route right now.

Flights to Colorado from Sydney usually cost between $983 and $1,368 in September.
The lowest price found in the past 5 days was $795 on Air Canada (Sep 9-Sep 16).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sydney to Colorado, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sydney to Colorado is March, when tickets cost $985 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $1,728 and $1,655 respectively.

How far in advance should I book a flight from Sydney to Colorado?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sydney to Colorado, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Sydney to Colorado, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Find deals

Good to know

Low season

April

Cheapest flight

$384
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Sydney to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Sydney to Colorado?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sydney to Colorado.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sydney to Colorado?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Sydney to Colorado is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sydney to Colorado?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Sydney to Colorado with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sydney to Colorado?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Sydney to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Sydney to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Sydney to Colorado. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sydney to Colorado? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10062 reviews
8.1Crew
6.7Food
7.7Boarding
7.1Entertainment
7.3Comfort
Airline reviews

Flight was late, the only reason I almost missed my flight was that my connection was also late.

2.0 MediocreJoseph, Jul 2026
PSP - DEN
Read more United Airlines reviews

Flight was late, the only reason I almost missed my flight was that my connection was also late.

Lufthansa seats were much more comfortable than United. While they had about the same video selection, Lufthansa didn't put advertisements in with the movies like United did. And the Lufthansa food was much better than United.

We flew business fares. Was amazing. However, the check in didn't offer business fares preboarding which is less hectic. 8/10 due to this. Staff compared to Canadian carriers go above and beyond. Would gladly fly United again.

The staff was incredible, very attentive, polite, made you feel like the center of the universe. They even all wrote me a happy birthday card. Truly just an amazing crew, cannot stress it enough.

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

Uncomfortable plastic seats even in premium economy. No free wifi. Even paid wifi was spotty to nonexistent. Bad food. Much worse than economy on foreign carriers like Qantas.

It was good but only meal served is very less. Meantime good to add rice and chicken in one of meal

I found the staff to not be very attentive at all. When paying for Business Class you expect a certain type of service and that was not found. They were almost rude even

Great. Food going from Australia to the US was better than other way around, but still needs improvement in terms of quality and quantity!!!

Due to a cancelled flight the day before this flight only had 44 people. Best flight ever on international route. Food getting better. Can United provide fruit ex apples and bananas for snacks? Crew fantastic.

Everything you need to know for your flight from Sydney to Colorado

Information on your arrival and departure airports

Sydney (SYD)