DEN - SYD

$628 Find Cheap Flights from Denver to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Sydney departing on 19/5. 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, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Sydney, 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 Denver to Sydney, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
$1,277
Typical prices: $2,185-$1,625
Multiple Airlines
Sun 10/5Mon 18/5
DEN - SYD • 2 stops
Cheapest one-way flight
$628
Typical prices: $1,099-$1,417
Multiple Airlines
Tue 19/5
DEN - SYD • 2 stops
Top airlines
Qantas Airways
Cheapest • from $1,610 (return)
Qantas Airways
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Denver and Sydney. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Salt Lake City (SLC)
Cheapest • Avg $217 (return)
Salt Lake City (SLC)
Shortest trip • 4h 34m (one-way)
Insights
Insights
Insights
Insights
When to book
4 weeks
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 13% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Sydney!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Denver to Sydney (DEN-SYD)

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

Sun, 10 May - Mon, 18 May
Multiple Airlines Logo
07:00 - 11:50
DEN
-
SYD
36h 50m
2 stops
Multiple Airlines Logo
13:15 - 00:38
SYD
-
DEN
27h 23m
2 stops
$1,277Multiple Airlines
Tue, 19 May - Sun, 31 May
Multiple Airlines Logo
08:41 - 11:50
DEN
-
SYD
35h 09m
2 stops
Multiple Airlines Logo
06:00 - 00:38
SYD
-
DEN
34h 38m
2 stops
$1,358Multiple Airlines
Sat, 2 May - Wed, 13 May
Multiple Airlines Logo
10:38 - 11:50
DEN
-
SYD
33h 12m
3 stops
Multiple Airlines Logo
13:15 - 06:33
SYD
-
DEN
33h 18m
3 stops
$1,373Multiple Airlines
Wed, 27 May - Sun, 31 May
Multiple Airlines Logo
07:20 - 11:50
DEN
-
SYD
36h 30m
2 stops
Multiple Airlines Logo
13:15 - 00:38
SYD
-
DEN
27h 23m
2 stops
$1,382Multiple Airlines
Wed, 27 May - Sun, 31 May
Multiple Airlines Logo
07:20 - 11:50
DEN
-
SYD
36h 30m
2 stops
Multiple Airlines Logo
13:15 - 03:25
SYD
-
DEN
30h 10m
3 stops
$1,388Multiple Airlines
Sat, 2 May - Wed, 13 May
Multiple Airlines Logo
09:49 - 11:50
DEN
-
SYD
34h 01m
2 stops
Multiple Airlines Logo
13:15 - 09:52
SYD
-
DEN
36h 37m
3 stops
$1,427Multiple Airlines
Sun, 3 May - Sun, 17 May
Multiple Airlines Logo
06:00 - 11:50
DEN
-
SYD
37h 50m
2 stops
Multiple Airlines Logo
06:00 - 00:38
SYD
-
DEN
34h 38m
2 stops
$1,431Multiple Airlines
Tue, 26 May - Tue, 9 Jun
Multiple Airlines Logo
08:41 - 11:50
DEN
-
SYD
35h 09m
2 stops
Multiple Airlines Logo
06:00 - 16:15
SYD
-
DEN
50h 15m
3 stops
$1,538Multiple Airlines
Wed, 29 Apr - Tue, 19 May
Qantas Airways Logo
19:58 - 07:05
DEN
-
SYD
19h 07m
1 stop
Qantas Airways Logo
09:10 - 12:06
SYD
-
DEN
18h 56m
1 stop
$1,610Qantas Airways
Wed, 13 May - Tue, 19 May
Multiple Airlines Logo
07:20 - 11:50
DEN
-
SYD
36h 30m
2 stops
Multiple Airlines Logo
17:50 - 10:04
SYD
-
DEN
32h 14m
1 stop
$1,617Multiple Airlines
Booking Insights

KAYAK's insights & trends for Denver to Sydney flights

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

How much is a return flight from Denver to Sydney?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Denver to Sydney departing in May.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Sydney, 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 Denver to Sydney is April, where tickets cost $1,673 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $2,458 and $2,127 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Sydney, 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 Denver to Sydney, you should book around 4 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Find deals

Good to know

Low seasonApril
Cheapest flight$628
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (27% more expensive on average)
Flight from Denver to Sydney

When to book flights from Denver to Sydney

Are your dates flexible? Find out the best times to travel from Denver to Sydney 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 Denver to Sydney

  • Where can I freshen up after my flight to Sydney Airport?

    If you are heading straight to a meeting or just need to freshen up after the flight, you'll find public bathrooms and shower facilities at Sydney Airport (SYD). Head to the international terminal for shower facilities. You'll find them between Mcdonald's and Amcal on Level 2 in T1. Entrance to the showers is chargeable. There are toilets on all three levels of the airport, and the bathrooms usually close at 22:00 and open again at 06:00 each day.

  • What facilities does the airport offer for business travellers?

    As Sydney is regarded as the business hub of Australia, there are many travellers that head to Sydney on business. The airport provides support for these travellers by offering modern meeting and conference rooms at T1 International, fitted with audio-visual equipment for productive meetings. The Kingsford Smith Suite, on Level 3, can be set up for 150 people sitting or standing, so feel free to host presentations or corporate functions here.  

  • What is the cheapest flight from Denver to Sydney?

    In the last 3 days, the lowest price for a flight from Denver to Sydney was $628 for a one-way ticket and $1,277 for a return.

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

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

  • Which airline alliances offer flights from Denver to Sydney?

    oneworld is the only airline alliance operating flights between Denver and Sydney.

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

    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 Denver to Sydney.

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

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

    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 Sydney with an airline and back to Denver with another airline.

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

    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 Sydney from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to Sydney

  • If you are travelling with young children and need to nurse before getting on your flight to Sydney, you'll find three nursing rooms located just past security at the centre of each concourse. They are open 24 hours a day and have comfortable seating, a changing table, a sink, charging ports and are wheelchair accessible.
  • Denver Airport (DEN) is concerned about eco-travel and has implemented a service that lends to a healthy planet. Along with their robust recycling programs, they have installed water-bottle refill stations throughout the airport, in the hope that fewer plastic bottles will be bought and used only once.
  • A special feature of Denver Airport is the CATS therapy squad. This is a group of volunteers that walk around the airport with their friendly furry friends for about 2 hours at a time, letting passengers pet and interact with the animals. Interacting with a dog or cat is proving to decrease stress levels and increase mental well-being in what can be a stressful environment.

Reviews of the top airline flying from Denver to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Denver to Sydney. 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 Denver to Sydney? 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 1018 reviews
7.0Food
7.7Boarding
7.2Entertainment
8.1Crew
7.4Comfort
Airline reviews

I couldn't hear all of the announcements. It was nice when they put them on the screen.

10.0 ExcellentAnonymous, Mar 2026
DFW - SYD
Read more Qantas Airways reviews

I couldn't hear all of the announcements. It was nice when they put them on the screen.

This was the worst flight I’ve been on. Getting on the plane where is was 30 degrees outside was hotter on board cabin must’ve been 33 degrees. This is a health hazard. They cannot be doing this to save on fuel. People could die from this!!. Fans and a/c was, off entertainment was off. Poor excuse given. Crew made the excuse that the system didn’t have enough power. They basically were operating on one engine to save on jet fuel till 3 hours later on cruising altitude and they then started the second engine. And finally the cabin was cooled. On a 7hour red eye flight this made it so uncomfortable and impossible to sleep.

My experience was great overall. Tanya was particularly friendly and helpful the entire trip. I was very pleased with her customer service skills. The plane was an older aircraft but the entire way was comfortable with barely any turbulence at all. Qantas should speed up its fleet renovation. Totally recommend using this airline.

Qantas is always subpar beyond comfy chairs for a domestic flight

I liked boarding the plane. The staff were rude, the food was appalling and the chairs the most uncomfortable I have ever experienced

an hour late, then had to disembark on back stairs and take 4 flights up to get to main airport. No warning, and difficulty for those with canes and poor knees.

Well my expórtenle with Qantas it wasn’t that good KLM from Bs Aires was delay Santiago Chile Qantas QF 028 was still in the airport but the crew didn’t opened the door for me soo I lost my fly And I stuck in the airport 13 hrs waiting for next fly by Latam Arline My question is can I have my money back for business class

It was ok, the additional baggage charges were a bit excessive given winter is a time for skiing. To have to pay $600 extra for skis was tantamount to robbery. Airlines should consider sporting goods as baggage. Likewise, they should consider increasing the number of bags allowed on international flights to known ski destinations.

Flight was canceled. I was not alerted. It was only kayak that alerted me

Flight was 2.5 hours late leaving. We spent 50 minutes of that sitting on the plane with no explanation. They did reduce the time in the air so we arrived a little less late which was something. The cheese and crackers were okay but the wine was terrible.

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

Information on your arrival and departure airports

Denver (DEN)
Sydney (SYD)