$672 Find Cheap Flights from Sydney to Colorado - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Sydney to Colorado

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Denver
Denver1 stop$838
Aspen
Aspen1 stop$1,987
Denver
Denver1 stop$838
Aspen
Aspen1 stop$1,987

Book Cheap Sydney to Colorado Plane Tickets

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sydney to Colorado

Tue, Oct 13 - Tue, Oct 20
Air Canada Logo
10:20 am - 4:58 pmSYD  Sydney Kingsford Smith-DEN Denver Intl
23h 38m1 stop Vancouver Intl
Air Canada Logo
7:51 am - 8:20 amDEN  Denver Intl-SYD Sydney Kingsford Smith
31h 29m1 stop Vancouver Intl
$838Air Canada
Wed, Oct 14 - Wed, Oct 21
Air Canada Logo
10:20 am - 6:18 pmSYD  Sydney Kingsford Smith-DEN Denver Intl
24h 58m1 stop Vancouver Intl
Air Canada Logo
4:17 pm - 8:20 amDEN  Denver Intl-SYD Sydney Kingsford Smith
23h 03m1 stop Vancouver Intl
$838Air Canada
Mon, Oct 12 - Mon, Oct 19
Air Canada Logo
10:20 am - 6:18 pmSYD  Sydney Kingsford Smith-DEN Denver Intl
24h 58m1 stop Vancouver Intl
Air Canada Logo
7:50 pm - 8:20 amDEN  Denver Intl-SYD Sydney Kingsford Smith
19h 30m1 stop Vancouver Intl
$839Air Canada
Wed, Oct 14 - Wed, Oct 21
Air Canada Logo
10:20 am - 6:04 pmSYD  Sydney Kingsford Smith-DEN Denver Intl
24h 44m2 stops Vancouver Intl Edmonton
Air Canada Logo
11:23 am - 8:20 amDEN  Denver Intl-SYD Sydney Kingsford Smith
27h 57m2 stops Edmonton Vancouver Intl
$843Air Canada
Tue, Oct 13 - Tue, Oct 20
Air Canada Logo
10:20 am - 6:18 pmSYD  Sydney Kingsford Smith-DEN Denver Intl
24h 58m1 stop Vancouver Intl
Air Canada Logo
11:23 am - 8:20 amDEN  Denver Intl-SYD Sydney Kingsford Smith
27h 57m2 stops Edmonton Vancouver Intl
$844Air Canada
Wed, Oct 14 - Wed, Oct 21
Air Canada Logo
10:20 am - 6:04 pmSYD  Sydney Kingsford Smith-DEN Denver Intl
24h 44m2 stops Vancouver Intl Edmonton
Air Canada Logo
7:50 pm - 8:20 amDEN  Denver Intl-SYD Sydney Kingsford Smith
19h 30m1 stop Vancouver Intl
$844Air Canada
Mon, Oct 12 - Mon, Oct 19
Air Canada Logo
8:00 am - 11:56 amSYD  Sydney Kingsford Smith-DEN Denver Intl
20h 56m2 stops Brisbane Vancouver Intl
Air Canada Logo
4:17 pm - 8:20 amDEN  Denver Intl-SYD Sydney Kingsford Smith
23h 03m1 stop Vancouver Intl
$851Air Canada
Tue, Oct 13 - Tue, Oct 20
Air Canada Logo
10:20 am - 10:27 amSYD  Sydney Kingsford Smith-DEN Denver Intl
41h 07m2 stops Vancouver Intl Toronto Pearson Intl
Air Canada Logo
7:16 pm - 8:20 amDEN  Denver Intl-SYD Sydney Kingsford Smith
44h 04m2 stops Calgary Vancouver Intl
$855Air Canada
Thu, Nov 5 - Mon, Nov 9
United Airlines Logo
11:50 am - 8:17 amSYD  Sydney Kingsford Smith-DEN Denver Intl
38h 27m2 stops San Francisco Ontario
United Airlines Logo
3:35 pm - 7:00 amDEN  Denver Intl-SYD Sydney Kingsford Smith
21h 25m1 stop Houston George Bush Intcntl
$1,310United Airlines
Tue, Nov 3 - Tue, Dec 1
United Airlines Logo
11:50 am - 8:17 amSYD  Sydney Kingsford Smith-DEN Denver Intl
38h 27m2 stops San Francisco Ontario
United Airlines Logo
5:52 pm - 9:20 amDEN  Denver Intl-SYD Sydney Kingsford Smith
21h 28m1 stop San Francisco
$1,311United 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?

Flight prices are below average for this route right now.

Flights to Colorado from Sydney usually cost between $1,150 and $1,563 in October.
The lowest price found in the past 5 days was $838 on Air Canada (Oct 13-Oct 20).

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

The cheapest month for flights from Sydney to Colorado is January, when tickets cost $1,037 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $1,807 and $1,693 respectively.

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

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 17 weeks before departure.

Find deals

Good to know

Low season

August

Cheapest flight

$672
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 5% 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

 
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 10227 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
8.1Crew
6.7Food
Airline reviews

awesome team work seen since on board till off plane in my destination. thanks you so much.

10.0 ExcellentReagan, Sep 2026
Read more United Airlines reviews

awesome team work seen since on board till off plane in my destination. thanks you so much.

They did not have free WIFI and I was not okay with that!

Great, except the canon was so cold. Even the flight attendants put jackets on

I missed the flight due to maintenance issues. This is the second flight I’ve missed in four days because United allows such little time between layovers. Very disappointing

It was serviceable, nothing special but nothing awful on this leg.

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.

More options for your flight from Sydney to Colorado

Complete your trip to Colorado with a hotel stay or car rental

Car rentals in Colorado
Hotels in Colorado
Vacations in Colorado