£437 Cheap Flights from Sydney (SYD) to Denver (DEN)

View £437 flight on Mon, 18 Aug 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at £437 for one-way flights and £661 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, 26 Jan - Sun, 8 Feb
SYD
Sydney
DEN
Denver
£661 Return, found 6 days ago
£661
Return
found 6 days ago
Select Air Canada flight, departing Mon, 26 Jan from Sydney to Denver, returning Sun, 8 Feb, priced at £661 found 6 days ago
Air Canada
Mon, 26 Jan - Sun, 8 Feb
SYD
Sydney
DEN
Denver
£666 Return, found 6 days ago
£666
Return
found 6 days ago
Select Air Canada flight, departing Mon, 26 Jan from Sydney to Denver, returning Sun, 8 Feb, priced at £666 found 6 days ago
Air Canada
Mon, 26 Jan - Sun, 8 Feb
SYD
Sydney
DEN
Denver
£693 Return, found 6 days ago
£693
Return
found 6 days ago
Select Air Canada flight, departing Mon, 26 Jan from Sydney to Denver, returning Sun, 8 Feb, priced at £693 found 6 days ago
Air Canada
Mon, 26 Jan - Sun, 8 Feb
SYD
Sydney
DEN
Denver
£698 Return, found 6 days ago
£698
Return
found 6 days ago
Select Air Canada flight, departing Mon, 26 Jan from Sydney to Denver, returning Sun, 8 Feb, priced at £698 found 6 days ago
Air Canada
Mon, 26 Jan - Sun, 8 Feb
SYD
Sydney
DEN
Denver
£713 Return, found 6 days ago
£713
Return
found 6 days ago
Select Air Canada flight, departing Mon, 26 Jan from Sydney to Denver, returning Sun, 8 Feb, priced at £713 found 6 days ago
Air Canada
Mon, 26 Jan - Sun, 8 Feb
SYD
Sydney
DEN
Denver
£766 Return, found 6 days ago
£766
Return
found 6 days ago
Select Air Canada flight, departing Mon, 26 Jan from Sydney to Denver, returning Sun, 8 Feb, priced at £766 found 6 days ago
Delta
Thu, 4 Jun - Sun, 14 Jun
SYD
Sydney
DEN
Denver
£960 Return, just found
£960
Return
just found
Select Delta flight, departing Thu, 4 Jun from Sydney to Denver, returning Sun, 14 Jun, priced at £960 just found
American Airlines
Thu, 4 Jun - Sun, 14 Jun
SYD
Sydney
DEN
Denver
£1,026 Return, just found
£1,026
Return
just found
Select American Airlines flight, departing Thu, 4 Jun from Sydney to Denver, returning Sun, 14 Jun, priced at £1,026 just found
Japan Airlines
Wed, 20 Aug - Sun, 24 Aug
SYD
Sydney
DEN
Denver
£1,127 Return, found 5 days ago
£1,127
Return
found 5 days ago
Select Japan Airlines flight, departing Wed, 20 Aug from Sydney to Denver, returning Sun, 24 Aug, priced at £1,127 found 5 days ago
Qantas Airways
Thu, 4 Jun - Sun, 14 Jun
SYD
Sydney
DEN
Denver
£1,191 Return, just found
£1,191
Return
just found
Select Qantas Airways flight, departing Thu, 4 Jun from Sydney to Denver, returning Sun, 14 Jun, priced at £1,191 just found

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

February is typically the cheapest month to fly

From £545 - £976 per traveller.

Graph displaying average flight prices per month

Flight from Sydney to Denver route information
Origin airport
Kingsford Smith Intl.
Destination airport
Denver Intl.
Airlines serving
Air New Zealand, Qantas Airways
Return price
£660
Distance
13364 km

Compare flights from Sydney to Denver easily and book with confidence

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

The easiest way to view the best deals on flights from Sydney to Denver 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 Kingsford Smith Intl. to Denver Intl. start at just £661 and range up to £1,191.  

To find an even better deal, try  

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

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

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Kingsford Smith Intl. to Denver 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 Sydney Airport to Denver Airport?
Based on fares quoted within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from Mascot Airport to DIA airport start from £661. Book today to secure the best price for your journey. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Mascot Airport to Denver Intl. Airport (DEN)?
This can differ from airline to airline, as each one has its own set of terms and conditions. Visit the Customer Service Portal, where there are easy instructions on how to cancel online.
How do I find cheap flights from Sydney Airport to Denver Airport 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 SYD to Denver Intl. Airport (DEN) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sydney Airport to Denver Intl. Airport (DEN)?
Sydney to Denver is around 13,500 kilometres, so be prepared to spend quite a while in the air. Don't forget to pack all the essentials, from your headphones to your hoodie. Take a few snacks to nibble on throughout your flight too.
Which airlines fly direct from Sydney Airport to Denver Airport?
You won't find any airlines operating directly between Mascot Airport and DEN, so be ready to make at least one stop on your journey. A layover, whether short or long, can be a welcome way to break up a trip!
Are Kingsford Smith Intl. Airport (SYD) to Denver Intl. Airport (DEN) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from SYD to Denver Intl. Airport (DEN) last minute could be your ticket to a fantastic deal. However, it could end up costing a great deal more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains as far ahead as 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back frequently as deals are updated all the time on Expedia.

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