£459 Cheap Flights from Denver (DEN) to Sydney (SYD)

View £459 flight on Wed, 15 Oct 2025Opens in a new window

Popular airlines from Denver International Airport (DEN) to Sydney Airport (SYD)

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Cheap Flights from Denver (DEN) to Sydney (SYD)

Prices were available within the past 7 days and start at £459 for one-way flights and £886 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sun, 8 Feb - Sun, 15 Mar
DEN
Denver
SYD
Sydney
£886 Return, found 23 hours ago
£886
Return
found 23 hours ago
Select Air Canada flight, departing Sun, 8 Feb from Denver to Sydney, returning Sun, 15 Mar, priced at £886 found 23 hours ago
Air Canada
Sun, 8 Feb - Sun, 15 Mar
DEN
Denver
SYD
Sydney
£897 Return, found 23 hours ago
£897
Return
found 23 hours ago
Select Air Canada flight, departing Sun, 8 Feb from Denver to Sydney, returning Sun, 15 Mar, priced at £897 found 23 hours ago
Air Canada
Sun, 8 Feb - Sun, 15 Mar
DEN
Denver
SYD
Sydney
£908 Return, found 23 hours ago
£908
Return
found 23 hours ago
Select Air Canada flight, departing Sun, 8 Feb from Denver to Sydney, returning Sun, 15 Mar, priced at £908 found 23 hours ago
Air New Zealand
Sun, 8 Feb - Sun, 15 Mar
DEN
Denver
SYD
Sydney
£926 Return, found 23 hours ago
£926
Return
found 23 hours ago
Select Air New Zealand flight, departing Sun, 8 Feb from Denver to Sydney, returning Sun, 15 Mar, priced at £926 found 23 hours ago
Air Canada
Sun, 8 Feb - Sun, 15 Mar
DEN
Denver
SYD
Sydney
£929 Return, found 23 hours ago
£929
Return
found 23 hours ago
Select Air Canada flight, departing Sun, 8 Feb from Denver to Sydney, returning Sun, 15 Mar, priced at £929 found 23 hours ago
Air Canada
Fri, 3 Apr - Mon, 13 Apr
DEN
Denver
SYD
Sydney
£949 Return, found 5 hours ago
£949
Return
found 5 hours ago
Select Air Canada flight, departing Fri, 3 Apr from Denver to Sydney, returning Mon, 13 Apr, priced at £949 found 5 hours ago
Air Canada
Sun, 8 Feb - Sun, 15 Mar
DEN
Denver
SYD
Sydney
£954 Return, found 23 hours ago
£954
Return
found 23 hours ago
Select Air Canada flight, departing Sun, 8 Feb from Denver to Sydney, returning Sun, 15 Mar, priced at £954 found 23 hours ago
Alaska Airlines
Wed, 5 Nov - Fri, 21 Nov
DEN
Denver
SYD
Sydney
£1,010 Return, found 4 days ago
£1,010
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 5 Nov from Denver to Sydney, returning Fri, 21 Nov, priced at £1,010 found 4 days ago
Qantas Airways
Wed, 5 Nov - Fri, 21 Nov
DEN
Denver
SYD
Sydney
£1,022 Return, found 4 days ago
£1,022
Return
found 4 days ago
Select Qantas Airways flight, departing Wed, 5 Nov from Denver to Sydney, returning Fri, 21 Nov, priced at £1,022 found 4 days ago
United
Fri, 3 Apr - Mon, 13 Apr
DEN
Denver
SYD
Sydney
£1,037 Return, found 5 hours ago
£1,037
Return
found 5 hours ago
Select United flight, departing Fri, 3 Apr from Denver to Sydney, returning Mon, 13 Apr, priced at £1,037 found 5 hours ago

Find the cheapest month to fly from Denver (DEN) to Sydney (SYD)

September is typically the cheapest month to fly

From £553 - £1,443 per traveller.

Graph displaying average flight prices per month

Flight from Denver to Sydney route information
Origin airport
Denver Intl.
Destination airport
Kingsford Smith Intl.
Airlines serving
Air Canada, Air New Zealand, Alaska Airlines, British Airways, Qantas Airways, Turkish Airlines
Return price
£886
Distance
13364 km

Compare flights from Denver to Sydney easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Denver to Sydney. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Kingsford Smith Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Denver Intl. to Kingsford Smith Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Denver Intl. (DEN) to Kingsford Smith Intl. (SYD)

The easiest way to view the best deals on flights from Denver to Sydney today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Denver Intl. to Kingsford Smith Intl. start at just £886 and range up to £1,037.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Denver and Sydney
  • booking your flight during February, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Denver to Sydney flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Denver Intl. to Kingsford Smith Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from DIA airport to SYD?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip flight between DEN and Sydney Airport was £886. Cheap tickets don't wait forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from DIA airport to Sydney Airport?
This differs between airlines, as each one has its own set of terms and conditions. Head to the Customer Service Portal, where there are easy instructions on how to cancel online.
How do I find cheap flights from DEN to Kingsford Smith Intl. Airport (SYD) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for DEN to Sydney Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from DIA airport to Kingsford Smith Intl. Airport (SYD)?
The distance is around 13,500 kilometres. Travel pillow? Check. Toothbrush? Double check. We recommend you pack all the essentials for this long-haul Denver to Sydney flight.
Which airlines fly direct from Denver Intl. Airport (DEN) to Mascot Airport?
If you want to fly straight from DIA airport to Kingsford Smith Intl. Airport (SYD), you'll have to book a flight with at least one stop. Unfortunately, there are no airlines that fly directly between these airports.
Are Denver Intl. Airport (DEN) to Sydney Airport flight tickets cheaper when they're purchased at the last minute?
Booking last minute from DIA airport to Sydney Airport can be hit-or-miss. You may be able to find a bargain, but you could also miss out completely! If you'd rather play it safe and start your travel planning ahead of time, Expedia compares flight deals up to a year in advance. Just remember that not all airlines list their prices that far in advance. Our top tip? Check back often as prices are updated frequently.

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