SYD - DEN

$474 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 9/5. 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, 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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Flights 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

Sun, Aug 10 - Fri, Aug 29
 Logo
6:30 am - 12:28 pmSYD-DEN
21h 58m2 stops
 Logo
4:19 pm - 11:40 amDEN-SYD
27h 21m2 stops
Mon, Aug 11 - Sat, Aug 30
Air Canada Logo
9:20 am - 8:44 amSYD-DEN
39h 24m2 stops
Air Canada Logo
7:05 pm - 7:20 amDEN-SYD
20h 15m1 stop
$1,006Air Canada
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Sat, Aug 9 - Thu, Aug 28
American Airlines Logo
9:10 am - 11:10 pmSYD-DEN
30h 00m1 stop
American Airlines Logo
6:37 pm - 6:55 amDEN-SYD
20h 18m1 stop
$1,029American Airlines
Find Deal
Sun, Aug 10 - Fri, Aug 29
American Airlines Logo
9:10 am - 11:10 pmSYD-DEN
30h 00m1 stop
American Airlines Logo
6:37 pm - 6:55 amDEN-SYD
20h 18m1 stop
$1,030American Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
Alaska Airlines Logo
9:40 pm - 2:00 pmSYD-DEN
33h 20m2 stops
Alaska Airlines Logo
7:02 pm - 7:45 pmDEN-SYD
31h 43m2 stops
$1,087Alaska Airlines
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Tue, Oct 28 - Tue, Nov 11
Alaska Airlines Logo
9:40 pm - 11:34 amSYD-DEN
30h 54m2 stops
Alaska Airlines Logo
11:27 am - 7:45 pmDEN-SYD
38h 18m2 stops
$1,099Alaska Airlines
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Wed, Oct 1 - Wed, Oct 8
United Airlines Logo
10:20 am - 12:15 pmSYD-DEN
17h 55m1 stop
United Airlines Logo
3:46 pm - 8:00 amDEN-SYD
23h 14m1 stop
$1,293United Airlines
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Sat, Aug 9 - Mon, Aug 25
Qantas Airways Logo
9:10 am - 11:29 amSYD-DEN
18h 19m1 stop
Qantas Airways Logo
5:59 pm - 7:30 amDEN-SYD
21h 31m1 stop
$1,311Qantas Airways
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Fri, Oct 31 - Sat, Nov 8
United Airlines Logo
10:20 am - 12:18 pmSYD-DEN
18h 58m1 stop
United Airlines Logo
9:20 pm - 9:05 amDEN-SYD
41h 45m1 stop
$1,341United Airlines
Find Deal
Mon, Jul 7 - Mon, Jul 21
Qantas Airways Logo
9:10 am - 11:10 amSYD-DEN
18h 00m1 stop
Qantas Airways Logo
11:40 am - 7:30 amDEN-SYD
27h 50m1 stop
$1,682Qantas Airways
Find Deal
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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’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.

Your flight ticket price will generally be cheaper if you fly to Denver on a Tuesday and more expensive on a Friday. On your return trip to Sydney, you should consider flying back on a Tuesday, and avoid Thursdays for better 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 $739 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $1,615 and $1,462 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. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonNovember
High seasonDecember
Cheapest flight$474
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly with an average 46% increase in price.
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 $474 for a one-way ticket and $985 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, oneworld, and SkyTeam 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 $1,050 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 $1,502 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.

Top 3 airlines serving 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 860 reviews
7.4Comfort
6.9Food
8.2Crew
7.1Entertainment
7.7Boarding
Airline reviews

Traditional economy class. Not a full flight so spare seats. Food and drinks were good

10.0 ExcellentPeter, Jun 2025MEL - HKG
Read more Qantas Airways reviews

Traditional economy class. Not a full flight so spare seats. Food and drinks were good

Was bumped to a later flight because of inefficiency on part of the airline.

Inflight entertainment, poor that there are no headrest screens on aircraft used for an international flight.

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

Pretty excellent. I don’t know what the pilot could have done better with the bumping ( there was a storm) nor what happened to my ears coming down into bendigo. It doesn’t happen coming down into Sydney just the return flight. I wonder why?

Touch screens were very difficult to use, generally being laggy and unresponsive- it was quite an art to get it to play the thing you wanted rather than some thing at random. Selection of films and Tv was good when touchscreen decided to finally respond.

Their aircraft are old and amenities lack way behind other international carriers leaving from BNE. Even in economy

Airport and crew experience was excellent. We had to queue for the runway - no one’s fault, but it did mean we were 30 minutes late leaving

Overall good experience with flight and airport wheelchair staff. Also got Indian food in the flights

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!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Not as good as expected Air Can needs to improve totally rated on internet as worst

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

The flight crew were friendly and attentive. Food was good and they passed out ice cream and drinks awhile after Lunch was done. The ice cream was a nice treat! I found several movies to watch during the flight. There was many movies and tv shows to choose from. We flew Premium economy and there was enough leg room to be comfortable. The seats were also comfortable. I would fly AA again if the airfare isn’t expensive.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

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

Information on your arrival and departure airports

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