Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Denver to Sydney from $416

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Sydney departing on 11/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Denver to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:45 pm - 7:25 amDEN-SYD
20h 40m1 stop
Multiple Airlines Logo
9:40 pm - 11:44 amSYD-DEN
32h 04m2 stops
$1,133Multiple Airlines
Find Deal
Mon, Dec 1 - Thu, Dec 11
Multiple Airlines Logo
1:00 pm - 7:25 amDEN-SYD
24h 25m1 stop
Multiple Airlines Logo
9:40 pm - 11:51 pmSYD-DEN
20h 11m2 stops
$1,136Multiple Airlines
Find Deal
Sat, Feb 14 - Tue, Mar 3
United Airlines Logo
7:35 pm - 9:05 amDEN-SYD
19h 30m1 stop
United Airlines Logo
12:10 pm - 2:53 pmSYD-DEN
19h 43m1 stop
$1,181United Airlines
Find Deal
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
9:05 pm - 7:00 amDEN-SYD
39h 55m1 stop
United Airlines Logo
12:10 pm - 12:23 pmSYD-DEN
18h 13m1 stop
$1,190United Airlines
Find Deal
Tue, Dec 23 - Wed, Jan 14
American Airlines Logo
7:17 pm - 9:00 amDEN-SYD
19h 43m1 stop
American Airlines Logo
11:20 am - 12:23 pmSYD-DEN
43h 03m1 stop
$1,193American Airlines
Find Deal
Tue, Dec 2 - Mon, Dec 8
American Airlines Logo
7:17 pm - 9:00 amDEN-SYD
19h 43m1 stop
American Airlines Logo
11:20 am - 12:06 pmSYD-DEN
42h 46m1 stop
$1,196American Airlines
Find Deal
Mon, Dec 1 - Thu, Dec 11
Air Canada Logo
11:42 am - 9:35 amDEN-SYD
27h 53m2 stops
Air Canada Logo
11:20 am - 8:50 amSYD-DEN
38h 30m2 stops
$1,198Air Canada
Find Deal
Tue, Mar 3 - Mon, Mar 9
Qantas Airways Logo
4:45 pm - 1:00 pmDEN-SYD
26h 15m2 stops
Qantas Airways Logo
11:20 am - 12:06 pmSYD-DEN
18h 46m1 stop
$1,199Qantas Airways
Find Deal
Mon, Dec 1 - Sun, Dec 7
Qantas Airways Logo
12:39 pm - 9:00 amDEN-SYD
26h 21m1 stop
Qantas Airways Logo
11:20 am - 12:18 pmSYD-DEN
18h 58m1 stop
$1,206Qantas Airways
Find Deal
Wed, Dec 24 - Sun, Jan 11
Air Canada Logo
7:05 pm - 9:35 amDEN-SYD
20h 30m1 stop
Air Canada Logo
11:20 am - 6:05 pmSYD-DEN
24h 45m2 stops
$1,240Air Canada
Find Deal
Mon, Feb 9 - Sat, Feb 28

Alaska Airlines flights from Denver to Sydney

Our best Alaska Airlines deals on Denver to Sydney flight tickets
Alaska Airlines
Feb 11
DEN12:34 pmDenver Intl
37h 11m
2 stops
SYD7:45 pmSydney Kingsford Smith
Feb 27
SYD9:40 pmSydney Kingsford Smith
39h 39m
2 stops
DEN7:19 pmDenver Intl
$1,143
Find similar
Alaska Airlines
Feb 24
DEN7:50 pmDenver Intl
29h 55m
2 stops
SYD7:45 pmSydney Kingsford Smith
Mar 6
SYD9:40 pmSydney Kingsford Smith
31h 39m
2 stops
DEN11:19 amDenver Intl
$1,144
Find similar
Alaska Airlines
Feb 19
DEN12:30 pmDenver Intl
37h 15m
2 stops
SYD7:45 pmSydney Kingsford Smith
Mar 3
SYD9:40 pmSydney Kingsford Smith
31h 59m
2 stops
DEN11:39 amDenver Intl
$1,147
Find similar

Delta flights from Denver to Sydney

Our best Delta deals on Denver to Sydney flight tickets
Delta
Feb 10
DEN6:29 amDenver Intl
30h 21m
2 stops
SYD6:50 amSydney Kingsford Smith
Feb 27
SYD10:40 amSydney Kingsford Smith
26h 22m
2 stops
DEN7:02 pmDenver Intl
$1,160
Find similar
Delta
Feb 7
DEN7:00 amDenver Intl
29h 50m
2 stops
SYD6:50 amSydney Kingsford Smith
Feb 27
SYD10:40 amSydney Kingsford Smith
18h 52m
1 stop
DEN11:32 amDenver Intl
$1,163
Find similar
Delta
Nov 25
DEN6:05 amDenver Intl
32h 25m
2 stops
SYD8:30 amSydney Kingsford Smith
Dec 2
SYD10:40 amSydney Kingsford Smith
30h 41m
2 stops
DEN11:21 pmDenver Intl
$1,185
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 27, 2025.
Use the filters below to find and compare flights from Denver to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 12/1

4:45 pm-7:25 am

1 stop20h 40m

Sydney Kingsford Smith

Thu 12/11

9:40 pm-11:44 am

2 stops32h 04m

$1,133

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 2/14

1:00 pm-7:25 am

1 stop24h 25m

Sydney Kingsford Smith

Tue 3/3

9:40 pm-11:51 pm

2 stops20h 11m

$1,136

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 3/2

7:35 pm-9:05 am

1 stop19h 30m

Sydney Kingsford Smith

Mon 3/9

12:10 pm-2:53 pm

1 stop19h 43m

$1,181

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 12/23

9:05 pm-7:00 am

1 stop39h 55m

Sydney Kingsford Smith

Wed 1/14

12:10 pm-12:23 pm

1 stop18h 13m

$1,190

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 12/2

7:17 pm-9:00 am

1 stop19h 43m

Sydney Kingsford Smith

Mon 12/8

11:20 am-12:23 pm

1 stop43h 03m

$1,193

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 12/1

7:17 pm-9:00 am

1 stop19h 43m

Sydney Kingsford Smith

Thu 12/11

11:20 am-12:06 pm

1 stop42h 46m

$1,196

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 3/3

11:42 am-9:35 am

2 stops27h 53m

Sydney Kingsford Smith

Mon 3/9

11:20 am-8:50 am

2 stops38h 30m

$1,198

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 12/1

4:45 pm-1:00 pm

2 stops26h 15m

Sydney Kingsford Smith

Sun 12/7

11:20 am-12:06 pm

1 stop18h 46m

$1,199

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 12/24

12:39 pm-9:00 am

1 stop26h 21m

Sydney Kingsford Smith

Sun 1/11

11:20 am-12:18 pm

1 stop18h 58m

$1,206

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 2/9

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Sat 2/28

11:20 am-6:05 pm

2 stops24h 45m

$1,240

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Sydney from

How to get the cheapest flight ticket from Denver to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Sydney?

In general, May is the cheapest month to fly from Denver to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $864. If you are unable to visit Sydney during the month of May, then departing from Denver during the month April is also very affordable. Most momondo users find prices during this month for around $869.

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Denver to Sydney is on a Tuesday when prices can be found for as low as $1,197. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,362.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is at noon. momondo users have found flights departing from Denver to Sydney at noon for as low as $933. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $1,292. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Sydney from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,078 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Denver for as low as $893 on momondo.

Can stopping save me money on Denver to Sydney flights?

You could potentially save up to 38% on your flight if you consider stops on a Denver to Sydney flight.

How have Denver to Sydney flight prices changed over time?

As of October 2025, prices for Denver to Sydney flights are approximately 28% cheaper when compared to flights at the same time last year.

When to book flights from Denver to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Sydney (DEN to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Sydney

Direct flights

None
There are no direct flights from Denver to Sydney. There are no popular flight routes from Denver to Sydney.
Search flight deals

  • How far is Denver Intl to Sydney Kingsford Smith by plane?

    Denver Intl and Sydney Kingsford Smith are 8325.4 mi apart from one another. A reasonable flight in good conditions will take 19h 02m.

  • When did momondo last update prices for flights from Denver Intl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Denver Intl Airport to Sydney Kingsford Smith Airport are updated daily.

  • How many operators does momondo search for flights from Denver Intl Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Denver Intl Airport to Sydney Kingsford Smith Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Denver to Sydney?

Best airlines flying from Denver to Sydney

Compare and see reviews for airlines that fly from Denver to Sydney with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $745Free CancellationRating
8.0
11,192 reviews
Search Alaska Airlines flights
DeltaPriceFrom $786Free CancellationRating
7.9
7,996 reviews
Search Delta flights
Qantas AirwaysPriceFrom $806Free CancellationRating
7.5
923 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $832Free CancellationRating
7.2
11,031 reviews
Search American Airlines flights
Air New ZealandPriceFrom $834Free CancellationRating
8.0
518 reviews
Search Air New Zealand flights
Air CanadaPriceFrom $1,009Free CancellationRating
7.1
10,367 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,261Free CancellationRating
7.4
8,999 reviews
Search United Airlines flights

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Katoomba
Wollongong
Randwick
Cronulla
Coogee
Manly
Penrith
Leura
Lithgow
Charlestown
Terrigal
Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Sydney?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Sydney from Denver.

Can I find flights from Denver to Sydney with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Sydney from Denver with this policy.

How can momondo help me find flights from Denver to Sydney?

Once you have performed a search for Denver to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Denver to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Denver to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 11/26
Wed 12/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia