DEN - SYD

$649 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 18/2. 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
$1,404
Overall average: $1,367
Multiple Airlines
Sun 1/3Thu 12/3
DEN - SYD • 2 stops
Cheapest one-way flight
$649
Typical prices: $653-$1,213
Multiple Airlines
Wed 18/2
DEN - SYD • 2 stops
Top airlines
Air Canada
Cheapest • from $1,784 (return)
Qantas Airways
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 15% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 16% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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, 1 Mar - Thu, 12 Mar
Multiple Airlines Logo
07:10 - 12:35DEN-SYD
35h 25m2 stops
Multiple Airlines Logo
14:00 - 00:40SYD-DEN
27h 40m2 stops
$1,404Multiple Airlines
Find Deal
Mon, 2 Feb - Fri, 20 Feb
Multiple Airlines Logo
06:05 - 07:25DEN-SYD
31h 20m1 stop
Multiple Airlines Logo
11:20 - 00:51SYD-DEN
31h 31m1 stop
$1,497Multiple Airlines
Find Deal
Sat, 6 Dec - Fri, 16 Jan
Multiple Airlines Logo
09:30 - 07:25DEN-SYD
27h 55m2 stops
Multiple Airlines Logo
11:20 - 00:05SYD-DEN
30h 45m1 stop
$1,542Multiple Airlines
Find Deal
Wed, 28 Jan - Thu, 12 Feb
Multiple Airlines Logo
21:44 - 07:25DEN-SYD
39h 41m1 stop
Multiple Airlines Logo
14:00 - 18:11SYD-DEN
22h 11m2 stops
$1,545Multiple Airlines
Find Deal
Sat, 6 Dec - Fri, 16 Jan
Multiple Airlines Logo
17:01 - 07:25DEN-SYD
20h 24m1 stop
Multiple Airlines Logo
11:20 - 00:05SYD-DEN
30h 45m1 stop
$1,562Multiple Airlines
Find Deal
Fri, 6 Feb - Sun, 22 Feb
Multiple Airlines Logo
06:05 - 07:25DEN-SYD
31h 20m1 stop
Multiple Airlines Logo
06:00 - 09:52SYD-DEN
45h 52m2 stops
$1,585Multiple Airlines
Find Deal
Thu, 29 Jan - Sat, 14 Feb
Multiple Airlines Logo
11:00 - 07:25DEN-SYD
26h 25m1 stop
Multiple Airlines Logo
17:45 - 01:01SYD-DEN
25h 16m1 stop
$1,610Multiple Airlines
Find Deal
Tue, 27 Jan - Sat, 14 Feb
Multiple Airlines Logo
11:02 - 07:25DEN-SYD
26h 23m1 stop
Multiple Airlines Logo
17:45 - 01:01SYD-DEN
25h 16m1 stop
$1,611Multiple Airlines
Find Deal
Fri, 5 Dec - Fri, 16 Jan
Multiple Airlines Logo
00:59 - 07:25DEN-SYD
36h 26m2 stops
Multiple Airlines Logo
17:45 - 00:05SYD-DEN
24h 20m1 stop
$1,616Multiple Airlines
Find Deal
Thu, 29 Jan - Mon, 9 Feb
Multiple Airlines Logo
11:00 - 07:25DEN-SYD
26h 25m1 stop
Multiple Airlines Logo
17:45 - 23:36SYD-DEN
23h 51m1 stop
$1,625Multiple Airlines
Find Deal
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.

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

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

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

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 $1,330 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $2,161 and $1,947 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 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$649
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (36% 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 $649 for a one-way ticket and $1,477 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.

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

    The two airlines most popular with KAYAK users for flights from Denver to Sydney are Qantas Airways and American Airlines. With an average price for the route of $1,994 and an overall rating of 7.5, Qantas Airways is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,432 and an overall rating of 7.2.

  • 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 airlines 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 940 reviews
7.2Entertainment
7.0Food
7.7Boarding
8.2Crew
7.5Comfort
Airline reviews

Couldn't access entertainment on app as said in an email

10.0 ExcellentVickie, Nov 2025NOU - SYD
Read more Qantas Airways reviews

Couldn't access entertainment on app as said in an email

Excellent as always, I won't fly to Australia, and back to the US on any other airline. The flight crew is always top notch, and have a way to make one feel extra special. Thank you for your service, I would rate Qantas Airways a 10+.

After already paying for excess luggage prior to flight, i was advised AT check in that i had to pay $816 or forfeit my flight! The lady at the counter was SO rude and had already started offboarding me when i said i would pay it after asking her three times for the exact amount! Have lodged a formal complaint yet heard nothing. Will not ever travel via Qantas again

A few more inches of legroom is all i ask

One of the best Qantas business flights I've had. Quality product

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.

Five hour flight instead of four hours due to westerly headwinds which wasn’t the fault of Qantas !

The wifi was out. Otherwise it was great flight. Richard, as CSM, was excellent.

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

More choices on snacks. Built-in video screen to enjoy entertainment choices.

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so did have any food

I have a gluten allergy so didn't have any food

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything was good The connects, with no blame to crew. Or pilots. I understand they are short staffed. Everything went well for me. I'll be using you guys again in May if not sooner.

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

We were very rushed by a staff member at the gate when transferring from American Airlines to Fijian. Then the plane stayed put for ages anyhow! The plane was delayed and my bag sent to San Francisco instead of Fiji

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

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

Information on your arrival and departure airports