SYD - DEN

$440 Find Cheap Flights from Sydney to Denver

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 Denver departing on 2/19. 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 Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Denver, 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 Denver, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$957
Overall average: $759
Multiple Airlines
Sat 3/14Sat 3/21
SYD - DEN • 2 stops
Cheapest one-way
$440
Typical prices: $452-$464
Multiple Airlines
Thu 2/19
SYD - DEN • 2 stops
Top airlines
Air New Zealand
Cheapest • from $1,058 (round-trip)
Qantas Airways
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 27% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Sydney to Denver (SYD-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sydney to Denver 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 Denver

Sat, Mar 14 - Sat, Mar 21
Multiple Airlines Logo
2:00 pm - 12:30 am
SYD
-
DEN
27h 30m
2 stops
Multiple Airlines Logo
9:00 am - 12:35 pm
DEN
-
SYD
34h 35m
2 stops
$957Multiple Airlines
Sun, Mar 15 - Sun, Mar 22
Multiple Airlines Logo
2:00 pm - 12:30 am
SYD
-
DEN
27h 30m
2 stops
Multiple Airlines Logo
10:29 pm - 7:25 am
DEN
-
SYD
39h 56m
1 stop
$987Multiple Airlines
Sun, Mar 15 - Sun, Mar 22
Multiple Airlines Logo
2:00 pm - 12:30 am
SYD
-
DEN
27h 30m
2 stops
Multiple Airlines Logo
9:00 am - 12:35 pm
DEN
-
SYD
34h 35m
2 stops
$988Multiple Airlines
Sat, Mar 14 - Sat, Mar 21
Multiple Airlines Logo
2:00 pm - 9:44 am
SYD
-
DEN
36h 44m
2 stops
Multiple Airlines Logo
10:29 pm - 7:25 am
DEN
-
SYD
39h 56m
1 stop
$1,057Multiple Airlines
Wed, Mar 4 - Sun, May 24
Air New Zealand Logo
11:45 am - 10:10 pm
SYD
-
DEN
28h 25m
2 stops
Air New Zealand Logo
10:00 am - 10:40 am
DEN
-
SYD
32h 40m
2 stops
$1,058Air New Zealand
Wed, Mar 4 - Sun, May 24
Air Canada Logo
11:20 am - 12:37 pm
SYD
-
DEN
19h 17m
1 stop
Air Canada Logo
7:50 pm - 7:20 am
DEN
-
SYD
19h 30m
1 stop
$1,087Air Canada
Wed, Apr 29 - Wed, May 6
Multiple Airlines Logo
5:50 pm - 9:45 am
SYD
-
DEN
31h 55m
1 stop
Multiple Airlines Logo
1:35 pm - 7:30 am
DEN
-
SYD
25h 55m
1 stop
$1,094Multiple Airlines
Sun, Mar 15 - Sun, Mar 22
Air Canada Logo
10:20 am - 12:37 pm
SYD
-
DEN
19h 17m
1 stop
Air Canada Logo
8:59 pm - 8:35 am
DEN
-
SYD
42h 36m
1 stop
$1,100Air Canada
Wed, Mar 4 - Sun, May 24
Multiple Airlines Logo
11:20 am - 12:37 pm
SYD
-
DEN
19h 17m
1 stop
Multiple Airlines Logo
7:50 pm - 12:40 pm
DEN
-
SYD
24h 50m
2 stops
$1,103Multiple Airlines
Wed, Mar 4 - Sun, May 24
Air Canada Logo
11:20 am - 10:23 am
SYD
-
DEN
41h 03m
2 stops
Air Canada Logo
7:50 pm - 7:20 am
DEN
-
SYD
19h 30m
1 stop
$1,120Air Canada
Booking Insights

KAYAK's insights & trends for Sydney to Denver flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sydney to Denver, 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 Denver is February, where tickets cost $752 (return) on average. On the other hand, the most expensive months are January and December, where the average cost of round-trip tickets is $1,335 and $1,284 respectively.

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

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 Denver, 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 Denver, you should book around 2 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$440
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Sydney to Denver

When to book flights from Sydney to Denver

Are your dates flexible? Find out the best times to travel from Sydney to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sydney to Denver

  • What is the cheapest flight from Sydney to Denver?

    In the last 3 days, the lowest price for a flight from Sydney to Denver was $440 for a one-way ticket and $957 for a round-trip.

  • Do I need a passport to fly between Sydney and Denver?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Sydney and on arrival in Denver.

  • Which aircraft models fly most regularly from Sydney to Denver?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sydney to Denver?

    Star Alliance, and oneworld are the airline alliances operating flights between Sydney and Denver, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Sydney to Denver, Qantas Airways or United Airlines?

    The two airlines most popular with KAYAK users for flights from Sydney to Denver are Qantas Airways and United Airlines. With an average price for the route of $788 and an overall rating of 7.5, Qantas Airways is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,529 and an overall rating of 7.4.

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

    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 Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Sydney 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 Denver?

    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 to Denver with an airline and back to Sydney with another airline. Booking your flights between Sydney and DEN can sometimes prove cheaper using this method.

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

    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 to Denver from Sydney 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 Denver

 
See real verified KAYAK customer reviews for airlines flying from Sydney to Denver. 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 Denver? 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 981 reviews
7.2Entertainment
7.0Food
7.7Boarding
7.5Comfort
8.2Crew
Airline reviews

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

2.0 MediocreAnonymous, Jan 2026
MEL - LAX
Read more Qantas Airways reviews

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.

My flight from Dallas to Sydney was cancelled. My entire trip was rerouted to include the following: Hartford to Washington DC Washington DC to JFK JFK to Auckland Auckland to Christchurch I paid for an aisle seat on the flight to Auckland and was asked if I would take a window seat to accommodate a family. The agent at the podium failed to mention that the family had a 3 month old baby and that a bassinet would be used during the 16 hour flight. The only way I could get out of my seat was to crawl under the bassinet of the sleeping baby. I think it is wrong that I was no given the choice to sit in another seat, that the agent knew what she was doing and chose to not properly disclose my seating arrangement. Terrible treatment.

they ran out of fruit for breakfast and so I just had a yogurt instead. other than that the flight was good

by the time they got to our row, they were out of some of the food options. games and movies were great but maybe more game options like tetris or pac man would be great

Great as usual, some delays but well communicated and made up for in the air

Poor! This flight was delayed 14 hours. There was no assistance in helping customers find other routes to their destination, nor any other kind of support. It was a chaotic experience. I'm not likely to fly with AA going forward.

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.

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

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

We Left Calgary 1/2 hour late and that made for a tight connection in Denver. After arriving everything was done to help us make our connection. That was a great effort. Thank You United

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

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

Information on your arrival and departure airports