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Cheap flights from Denver to Sydney from $419

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 6/8. 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

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Find the cheapest flights from Denver to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:41 am - 11:50 am
DEN
-
SYD
35h 09m
2 stops
Multiple Airlines Logo
1:15 pm - 12:38 am
SYD
-
DEN
27h 23m
2 stops
$902Multiple Airlines
Sun, May 10 - Mon, May 18
Multiple Airlines Logo
7:00 am - 11:50 am
DEN
-
SYD
36h 50m
2 stops
Multiple Airlines Logo
1:15 pm - 12:38 am
SYD
-
DEN
27h 23m
2 stops
$903Multiple Airlines
Sun, May 10 - Mon, May 18
Multiple Airlines Logo
10:00 am - 11:50 am
DEN
-
SYD
33h 50m
3 stops
Multiple Airlines Logo
1:15 pm - 12:38 am
SYD
-
DEN
27h 23m
2 stops
$920Multiple Airlines
Mon, May 4 - Mon, May 11
Multiple Airlines Logo
7:20 am - 11:50 am
DEN
-
SYD
36h 30m
2 stops
Multiple Airlines Logo
1:15 pm - 8:06 pm
SYD
-
DEN
22h 51m
2 stops
$962Multiple Airlines
Wed, May 20 - Wed, May 27
Multiple Airlines Logo
6:00 am - 11:50 am
DEN
-
SYD
37h 50m
3 stops
Multiple Airlines Logo
1:15 pm - 9:38 am
SYD
-
DEN
36h 23m
3 stops
$969Multiple Airlines
Mon, May 4 - Mon, May 11
Multiple Airlines Logo
10:38 am - 11:50 am
DEN
-
SYD
33h 12m
3 stops
Multiple Airlines Logo
1:15 pm - 6:33 am
SYD
-
DEN
33h 18m
3 stops
$971Multiple Airlines
Sat, May 2 - Wed, May 13
Multiple Airlines Logo
10:00 am - 11:50 am
DEN
-
SYD
33h 50m
3 stops
Multiple Airlines Logo
6:00 am - 6:33 am
SYD
-
DEN
40h 33m
3 stops
$985Multiple Airlines
Sat, May 9 - Tue, May 19
Multiple Airlines Logo
7:20 am - 10:10 pm
DEN
-
SYD
46h 50m
2 stops
Multiple Airlines Logo
1:15 pm - 8:06 pm
SYD
-
DEN
22h 51m
2 stops
$1,007Multiple Airlines
Wed, May 20 - Wed, May 27
Multiple Airlines Logo
9:49 am - 11:50 am
DEN
-
SYD
34h 01m
2 stops
Multiple Airlines Logo
1:15 pm - 9:52 am
SYD
-
DEN
36h 37m
3 stops
$1,009Multiple Airlines
Sat, May 2 - Wed, May 13
Multiple Airlines Logo
6:00 am - 11:50 am
DEN
-
SYD
37h 50m
2 stops
Multiple Airlines Logo
6:00 am - 12:38 am
SYD
-
DEN
34h 38m
2 stops
$1,012Multiple Airlines
Sun, May 3 - Sun, May 17

Qantas Airways flights from Denver to Sydney

Our best Qantas Airways deals on Denver to Sydney flight tickets
Qantas Airways
Apr 19
DEN6:20 pmDenver Intl
20h 45m
1 stop
SYD7:05 amSydney Kingsford Smith
Apr 25
SYD5:50 pmSydney Kingsford Smith
18h 13m
1 stop
DEN8:03 pmDenver Intl
$1,129
Qantas Airways
Apr 14
DEN6:20 pmDenver Intl
20h 45m
1 stop
SYD7:05 amSydney Kingsford Smith
Apr 21
SYD9:10 amSydney Kingsford Smith
18h 56m
1 stop
DEN12:06 pmDenver Intl
$1,138
Qantas Airways
Apr 26
DEN8:35 pmDenver Intl
18h 30m
1 stop
SYD7:05 amSydney Kingsford Smith
May 10
SYD5:50 pmSydney Kingsford Smith
18h 13m
1 stop
DEN8:03 pmDenver Intl
$1,140

Air Canada flights from Denver to Sydney

Our best Air Canada deals on Denver to Sydney flight tickets
Air Canada
Aug 25
DEN7:50 pmDenver Intl
19h 30m
1 stop
SYD7:20 amSydney Kingsford Smith
Sep 15
SYD9:20 amSydney Kingsford Smith
23h 38m
1 stop
DEN4:58 pmDenver Intl
$1,211
Air Canada
Aug 25
DEN7:50 pmDenver Intl
19h 30m
1 stop
SYD7:20 amSydney Kingsford Smith
Sep 6
SYD9:20 amSydney Kingsford Smith
29h 52m
1 stop
DEN11:12 pmDenver Intl
$1,221
Air Canada
Aug 25
DEN9:10 amDenver Intl
30h 10m
1 stop
SYD7:20 amSydney Kingsford Smith
Sep 6
SYD9:20 amSydney Kingsford Smith
29h 52m
1 stop
DEN11:12 pmDenver Intl
$1,222

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 April 9, 2026.
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

Cheapest round-trip

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 5/10

8:41 am-11:50 am

2 stops35h 09m

Sydney Kingsford Smith

Mon 5/18

1:15 pm-12:38 am

2 stops27h 23m

$902

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 5/10

7:00 am-11:50 am

2 stops36h 50m

Sydney Kingsford Smith

Mon 5/18

1:15 pm-12:38 am

2 stops27h 23m

$903

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 5/4

10:00 am-11:50 am

3 stops33h 50m

Sydney Kingsford Smith

Mon 5/11

1:15 pm-12:38 am

2 stops27h 23m

$920
Quickest round-trip

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 5/20

7:20 am-11:50 am

2 stops36h 30m

Sydney Kingsford Smith

Wed 5/27

1:15 pm-8:06 pm

2 stops22h 51m

$962

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 5/4

6:00 am-11:50 am

3 stops37h 50m

Sydney Kingsford Smith

Mon 5/11

1:15 pm-9:38 am

3 stops36h 23m

$969

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 5/2

10:38 am-11:50 am

3 stops33h 12m

Sydney Kingsford Smith

Wed 5/13

1:15 pm-6:33 am

3 stops33h 18m

$971

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 5/9

10:00 am-11:50 am

3 stops33h 50m

Sydney Kingsford Smith

Tue 5/19

6:00 am-6:33 am

3 stops40h 33m

$985

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 5/20

7:20 am-10:10 pm

2 stops46h 50m

Sydney Kingsford Smith

Wed 5/27

1:15 pm-8:06 pm

2 stops22h 51m

$1,007

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 5/2

9:49 am-11:50 am

2 stops34h 01m

Sydney Kingsford Smith

Wed 5/13

1:15 pm-9:52 am

3 stops36h 37m

$1,009

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 5/3

6:00 am-11:50 am

2 stops37h 50m

Sydney Kingsford Smith

Sun 5/17

6:00 am-12:38 am

2 stops34h 38m

$1,012

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Denver and Sydney?

What is the cheapest month to fly to Sydney?

In general, April 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 $1,183. If you are unable to visit Sydney during the month of April, then departing from Denver during the month March is also very affordable. Most momondo users find prices during this month for around $1,238.

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 $1,360 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 $1,160 on momondo.

Can stopping save me money on Denver to Sydney flights?

You could potentially save up to 23% 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 April 2026, prices for Denver to Sydney flights are approximately 1% more expensive 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

Fastest flight time

18h 30m

Direct flights

None
The fastest flight from Denver to Sydney takes 18h 30m
There are no direct flights from Denver to Sydney. There are no popular flight routes from Denver to Sydney.
Search flight deals

Frequently asked questions about flying from Denver to Sydney

  • 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 18h 30m.

  • 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
DeltaPriceFrom $243Free CancellationRating
7.9
8,393 reviews
Search Delta flights
Fiji AirwaysPriceFrom $684Free CancellationRating
8.1
239 reviews
Search Fiji Airways flights
Alaska AirlinesPriceFrom $745Free CancellationRating
7.9
12,197 reviews
Search Alaska Airlines flights
Qantas AirwaysPriceFrom $800Free CancellationRating
7.5
1,017 reviews
Search Qantas Airways flights
United AirlinesPriceFrom $853Free CancellationRating
7.4
9,556 reviews
Search United Airlines flights
American AirlinesPriceFrom $874Free CancellationRating
7.1
11,564 reviews
Search American Airlines flights
Air CanadaPriceFrom $1,009Free CancellationRating
7.1
10,909 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,121Free CancellationRating
8.0
626 reviews
Search Air New Zealand 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
Penrith
Randwick
Coogee
Leura
Lithgow
Manly
Cronulla
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.

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