$629 Find Cheap Flights from Sydney to Colorado

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 6/8. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Colorado

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Colorado, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Colorado, as well as popular online travel agencies
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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
Denver2 stops$975
Aspen
Aspen1 stop$1,932
Denver
Denver2 stops$975
Aspen
Aspen1 stop$1,932

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

Fri, Aug 7 - Sat, Aug 22
Air New Zealand Logo
11:55 am - 9:28 pm
SYD
-
DEN
25h 33m
2 stops
Air New Zealand Logo
4:20 pm - 8:45 am
DEN
-
SYD
24h 25m
2 stops
$975Air New Zealand
Thu, Aug 6 - Fri, Aug 21
Air New Zealand Logo
11:55 am - 10:15 pm
SYD
-
DEN
26h 20m
2 stops
Air New Zealand Logo
4:20 pm - 8:45 am
DEN
-
SYD
24h 25m
2 stops
$980Air New Zealand
Tue, May 5 - Tue, Jun 16
Air Canada Logo
9:20 am - 8:40 am
SYD
-
DEN
39h 20m
2 stops
Air Canada Logo
7:50 pm - 7:20 am
DEN
-
SYD
19h 30m
1 stop
$1,010Air Canada
Tue, May 5 - Tue, Jun 16
Air Canada Logo
9:20 am - 4:03 pm
SYD
-
DEN
22h 43m
2 stops
Air Canada Logo
7:18 pm - 7:20 am
DEN
-
SYD
44h 02m
2 stops
$1,015Air Canada
Thu, Apr 23 - Mon, Apr 27
Air Canada Logo
9:20 am - 12:35 pm
SYD
-
DEN
19h 15m
1 stop
Air Canada Logo
4:13 pm - 7:20 am
DEN
-
SYD
47h 07m
2 stops
$1,018Air Canada
Tue, May 5 - Tue, Jun 16
Multiple Airlines Logo
9:10 am - 1:12 pm
SYD
-
DEN
20h 02m
1 stop
Multiple Airlines Logo
1:30 pm - 7:05 am
DEN
-
SYD
25h 35m
1 stop
$1,021Multiple Airlines
Fri, May 1 - Fri, May 8
Qantas Airways Logo
12:00 pm - 4:23 pm
SYD
-
COS
20h 23m
1 stop
Qantas Airways Logo
5:13 pm - 6:55 am
COS
-
SYD
21h 42m
1 stop
$1,192Qantas Airways
Thu, Jun 18 - Fri, Jun 19
United Airlines Logo
10:20 am - 7:55 pm
SYD
-
ASE
25h 35m
1 stop
United Airlines Logo
7:15 pm - 7:00 am
ASE
-
SYD
19h 45m
1 stop
$1,932United Airlines
Thu, Jun 18 - Fri, Jun 19
United Airlines Logo
9:30 am - 5:26 pm
SYD
-
ASE
23h 56m
2 stops
United Airlines Logo
3:25 pm - 6:55 am
ASE
-
SYD
23h 30m
2 stops
$1,936United Airlines
Thu, Jun 18 - Fri, Jun 19
Qantas Airways Logo
7:10 am - 5:21 pm
SYD
-
ASE
26h 11m
3 stops
Qantas Airways Logo
5:51 pm - 11:30 am
ASE
-
SYD
25h 39m
2 stops
$2,754Qantas Airways
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 August.

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 November, when tickets cost $977 (return) on average. On the other hand, the most expensive months are January and December, when the average cost of round-trip tickets is $1,340 and $1,283 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 20 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$629
Best time to beat the crowds with an average 3% 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 airlines 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.
7.5
Qantas AirwaysOverall score based on 1006 reviews
7.7Boarding
8.1Crew
7.0Food
7.2Entertainment
7.4Comfort
Airline reviews

Our boarding and flight was very good. However when we landed and pulled in to the gate it took 55 minutes for the jet bridge to be positioned next to the aircraft. That caused us to miss our ground transportation and it caused us unnecessary last minute transit planning and expense. Our flight was AA1733 on March 17, 2026

4.0 OkayMike, Mar 2026
DFW - MKE
Read more Qantas Airways reviews

Our boarding and flight was very good. However when we landed and pulled in to the gate it took 55 minutes for the jet bridge to be positioned next to the aircraft. That caused us to miss our ground transportation and it caused us unnecessary last minute transit planning and expense. Our flight was AA1733 on March 17, 2026

We booked with Qantas instead of Delta and we instead flew on American Airlines. American is not our favorite to go on. No leg room and the width of seats are a joke. Your are packed like sardines on American flights.

When I originally booked this flight, I was expecting to travel on Qantas. When the itinerary changed and the long-haul segment was operated by American Airlines, we were disappointed but remained open-minded. Unfortunately, the overall service experience fell far short of expectations. This was a long-haul international flight. Getting up periodically to use the restroom or stretch is inevitable, especially on flights of this duration. However, each time we stood up, we felt as though we were inconveniencing the crew. The tone and body language often suggested that we were in the way or disrupting something simply by moving about the cabin. As a result, I avoided getting up as often as I needed to and was physically very sore upon arrival. Meal service was similarly impersonal. The options were presented in single words “beef or veggie,” “pasta or beef” without any description of what was actually being served. There was little engagement or courtesy beyond that. Even simple expressions of gratitude were often not acknowledged. I am accustomed to no-frills travel and do not expect luxury. What was disappointing was not the absence of extras, but the absence of basic warmth and professionalism. On a long-haul international flight, small moments of courtesy and humanity make a significant difference. In this case, the experience felt transactional and dismissive rather than welcoming. I hope this feedback is taken constructively, as there is a meaningful difference between efficient service and indifferent service.

Flight arrived late with no one to help over 30 people rebook. I slept at the airport.

Business seats not as comfortable or private as most competitors (e.g. Qantas was outstanding), and movie selection was much more limited than Qantas or United has been recently

Hard to move and get out of my seat when the passenger in front is in recline position.

It was a good flight and no complaints. It just wasn't anything that was better than any other flight.

The crew were wonderful - if only the customers were as well behaved as the attendants!! Ha ha! If you could just talk to God and ask for less turbulence next time.... Juuuuust kidding....

Basic airline, aircraft and service. AA gets you from point A to B. My flight was delayed by 2 hours too.

No internet on flight, which makes log travels really hard.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

As great a red-eye flight as red-eye flights can be.

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

I just think it’s unfortunate that Airlines have completely abandoned the idea of serving any kind of decent or even real food on flights, not even on a four hour flight!? Those days are gone, I guess.

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

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

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

Information on your arrival and departure airports