SYD - DEN

$710 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 15/10. 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

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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Denver.
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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 return 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 return flight deals from Sydney to Denver

Wed, 17 Sep - Sat, 20 Sep
Air Canada Logo
09:20 - 18:03SYD-DEN
24h 43m2 stops
Air Canada Logo
19:05 - 07:20DEN-SYD
20h 15m1 stop
$1,206Air Canada
Find Deal
Wed, 17 Sep - Sat, 20 Sep
Air Canada Logo
09:20 - 18:13SYD-DEN
24h 53m1 stop
Air Canada Logo
19:05 - 07:20DEN-SYD
20h 15m1 stop
$1,215Air Canada
Find Deal
Wed, 15 Oct - Wed, 22 Oct
American Airlines Logo
10:10 - 11:28SYD-DEN
18h 18m1 stop
American Airlines Logo
18:14 - 08:05DEN-SYD
20h 51m1 stop
$1,267American Airlines
Find Deal
Wed, 15 Oct - Wed, 22 Oct
American Airlines Logo
10:10 - 16:02SYD-DEN
22h 52m2 stops
American Airlines Logo
14:48 - 08:05DEN-SYD
24h 17m2 stops
$1,275American Airlines
Find Deal
Wed, 22 Oct - Thu, 13 Nov
Air New Zealand Logo
11:50 - 20:48SYD-DEN
25h 58m2 stops
Air New Zealand Logo
16:05 - 10:30DEN-SYD
24h 25m2 stops
$1,436Air New Zealand
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Thu, 16 Oct - Thu, 23 Oct
Air New Zealand Logo
11:50 - 20:48SYD-DEN
25h 58m2 stops
Air New Zealand Logo
15:46 - 10:35DEN-SYD
25h 49m2 stops
$1,507Air New Zealand
Find Deal
Wed, 1 Oct - Wed, 8 Oct
Delta Logo
09:25 - 23:44SYD-DEN
30h 19m1 stop
Delta Logo
06:15 - 07:35DEN-SYD
32h 20m1 stop
$2,271Delta
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Wed, 15 Oct - Wed, 22 Oct
United Airlines Logo
11:20 - 14:59SYD-DEN
20h 39m2 stops
United Airlines Logo
10:14 - 08:00DEN-SYD
28h 46m1 stop
$2,291United Airlines
Find Deal
Thu, 16 Oct - Thu, 23 Oct
United Airlines Logo
11:20 - 18:13SYD-DEN
23h 53m1 stop
United Airlines Logo
17:52 - 07:55DEN-SYD
21h 03m1 stop
$2,346United Airlines
Find Deal
Sun, 28 Sep - Wed, 8 Oct
Delta Logo
09:25 - 21:42SYD-DEN
28h 17m2 stops
Delta Logo
06:25 - 07:35DEN-SYD
32h 10m2 stops
$2,499Delta
Find Deal
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.

How much is a return flight from Sydney to Denver?

What’s the cheapest day of the week to fly from Sydney to Denver?

The average price of all round-trip flights from Sydney to Denver clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Denver on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Sydney to Denver. For your return ticket, we recommend flying on a Wednesday and avoiding Tuesdays for the best deals.

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 $1,127 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $2,447 and $2,052 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 4 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$710
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly (48% more expensive 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 return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 $465 for a one-way ticket and $790 for a return.

  • Which airports will I be using when flying from Sydney to Denver?

    When flying out of Sydney you will be using Sydney Kingsford Smith. You will be landing at Denver, also known as Denver Intl.

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

  • Which is the best airline for flights from Sydney to Denver, Air New Zealand or Delta?

    The two airlines most popular with KAYAK users for flights from Sydney to Denver are Air New Zealand and Delta. With an average price for the route of $1,549 and an overall rating of 8.0, Air New Zealand is the most popular choice. Delta is also a great choice for the route, with an average price of $2,546 and an overall rating of 7.9.

  • 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 return ticket. You could then fly to Denver with an airline and back to Sydney with another airline.

  • 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 5 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.
8.0
Air New ZealandOverall score based on 505 reviews
7.4Entertainment
8.0Comfort
7.3Food
8.5Crew
8.2Boarding
Airline reviews

Not a comfortable trip, the seats are not good, and they look old.

4.0 OkayAnonymous, July 2025AKL - SFO
Read more Air New Zealand reviews

Not a comfortable trip, the seats are not good, and they look old.

Lost my luggage and brought someone else luggage to my airport.

Not entirely positive. It’s frustrating that everything is done through the united app. One of our flight attendants on our trip from San Francisco to MSP continually had trouble hearing people so she flipped her hair into people’s faces

Our original flight was cancelled from SFO to AKL on 6/16/25. So we had to stay overnight at a hotel after a 12-hour layover plus 3-hour delay before the cancellation. Then had to fly to LA and then to AKL the following day losing an entire day of our vacation in NZ, that we can never get back.

Two hours was not enough time to transition from the international to domestic terminal. You have to go through customs, a biological hazard check, gather your luggage, take a bus to the domestic terminal and recheck your luggage. The bus was slow and crowded and the lines to recheck your bags were very long. We missed our connecting flight. Initially, the Air New Zealand officials were not helpful at all in helping to get us on another flight. Told us we would have to buy another ticket for a flight 11 hours later. Found another agent that was more helpful. He helped arrange to get us on standby for another flight three hours later. Had to ride in jump seats next to the flight attendants, but at least we eventually got to out destination.

Full flight. Flight attendants were harried. Otherwise, fine for the typical cramped seating conditions in coach.

Great! Flight was delayed by 30 mins but all was great. Thanks.

The 10hr flight was a comfortable as it could be in row 57. The food was just very bad….bland and soggy!

The business class upgrade meant a good sleep on the way home after a long week away. Excellent service, great food, and comfortable seat/bed for the journey.

I love the “boarding from the back” idea - it’s so much better than the “Zones” idea that many others use. Also, the inflight wifi was a first for me! Very nice to have on a 13-hour flight!

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

A few more inches of legroom is all i ask

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.

Business class points redemption - good value for points paid, dubious value if out of your own pocket, domestic class business product okay for this length of flight. The flight left and arrived on time, crew were good, aircraft was a bit old and tired, but still miles ahead of their competitors in Virgin and Jetstar.

Airline running better than post Covid, proper boarding process now implemented, some aircraft feeling a bit old and tired, crew fine, online experience better.

We were upgraded and after just a short delay in attending to a safety check we were on our way. Would definately fly Qantas International on their Dreamliner again.

I tried to check in online but was unable to do so. I stood in line for nearly two hours to check in. American Airlines was understaffed. When I finally got to the kiosk to check in, I was still unable to check in. No AA staff was available to help. Finally one of the airport security agents who was helping passengers became of lack of AA Staff told me: “I think the reason you can’t check in is that you are starting your name with an upper case letter when you write it. Just write it with all lower case letters.” That did allow me to check in. HOW COULD ANYONE POSSIBLY KNOW THAT IF THEY USE AN INITIAL UPPER CASE LETTER TO SPELL THEIR OWN NAME, AA WOULD NOT ALLOW THEM TO CHECK IN?????? Then I had to wait in line over half an hour again to drop off my baggage. Although I arrived at the airport 3 hours early, by the time I got to the gate, they had already started boarding.

Overall experience was good but what really impressed me the most was the care the flight attendants took of a sick passenger who was sitting in front of me. The flight attendants would come and check on her quite regularly providing her support and comfort. Brilliant service!

Only answered OK and poor as there was no entertainment and I didnt have any food

4.5 hr international flight. We got a glass of water. Ranks up there with Ryan Air, Easy Jet, Spirit and Frontier. Expected better.

Gluten free options less explicit on business class, but great service

Very good… seems the virgin staff particularly in the lounge and in flight exceeded expectations.

I liked everything about the experience but would have liked some free snacks!

Crew was great but flight was delayed almost three hours due to a technical issue and we had to go back to the terminal and wait for another one.

Being told why we delayed three hours and not even given an apology by someone. Not a word. Not my airline of choice ever.

Checked Baggage line up was long but moved quickly, rest of the process, boarding, crew was excellent

Virgin has always provided a smooth and comfortable flight. This one was no different. Seats are comfortable. Staff are great. This is my favourite airline.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

Efficient, calm when things were delayed and kept us regularly informed of what was happening.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

I swear airplane seats keep getting smaller and smaller but everything else was great. Smooth sailing and we got in early.

No food to provide, they forgot that, in some cases, people stay at the airport for hours without food. Now, to provide them with food, they have to ask them to pay, because some don't have money. That way, they can't eat.

After a long flight from Tokyo, our connecting flight home was canceled due to “maintenance” while we were on our layover in Toronto. Very frustrating to close out our honeymoon, although I’m sure others had it even worse during last week’s strike. Air Canada staff at Pearson Airport are the one thing that kept me remotely at peace during this — they were very helpful and deserve a lot of props. But I would not fly Air Canada again.

I had wonderful wheelchair assistance through the Montreal airport onto the flight. Air Canada was excellent in this both at the Fredericton airport and the Montreal one where an attendant helped us through customs as well as transport and baggage security.

Horrible flight cancelled had to buy another very expensive ticket

Flight was cancelled last minute due to Air Canada strike leaving us stranded and having to stressfully find a way home that cost hundreds of dollars in excess cost added to the trip. Having just experienced our mother's funeral service, this was not a good way to end our trip.

Air Canada marooned me in Canada with no way back home during my summer vacation. I had to buy a last minute flight ticket for over $500 to make it back home. I have their credit card and have flown them for years. Never again.

Flight was cancelled last minute. Had to scramble and purchase a $2000 flight through a separate airlines. Stuck in Toronto two extra days. Missed my first two days on a new job. Had to rent a car for an additional two days. Scrambled to fins a place to live those extra two days. Spent a ton of extra money and lost a lot of money, as well as made a poor impression at work. Difficult difficult difficult

Terrible, return flight was cancelled a night before the flight was scheduled to depart and I was notified by an email and an automated message on their phone line. I’ll never book Air Canada again

Could not understand what the attendant was saying during his announcements.

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

Other airlines flying from Sydney to Denver

Flights from the other most popular airlines that fly from Sydney to Denver according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

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