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Cheap flights from Denver to Sydney from $659

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 10/2. 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

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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:30 - 12:35
DEN
-
SYD
31h 05m
2 stops
Multiple Airlines Logo
06:00 - 00:30
SYD
-
DEN
35h 30m
2 stops
$1,182Multiple Airlines
Tue, 24 Feb - Thu, 12 Mar
Multiple Airlines Logo
21:31 - 07:25
DEN
-
SYD
39h 54m
1 stop
Multiple Airlines Logo
14:00 - 00:30
SYD
-
DEN
27h 30m
2 stops
$1,222Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
11:56 - 12:35
DEN
-
SYD
30h 39m
2 stops
Multiple Airlines Logo
14:00 - 00:30
SYD
-
DEN
27h 30m
2 stops
$1,226Multiple Airlines
Thu, 5 Mar - Thu, 12 Mar
Multiple Airlines Logo
21:31 - 07:25
DEN
-
SYD
39h 54m
1 stop
Multiple Airlines Logo
14:00 - 00:30
SYD
-
DEN
27h 30m
2 stops
$1,227Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
21:31 - 07:25
DEN
-
SYD
39h 54m
1 stop
Multiple Airlines Logo
14:00 - 00:30
SYD
-
DEN
27h 30m
2 stops
$1,240Multiple Airlines
Wed, 4 Mar - Wed, 18 Mar
Multiple Airlines Logo
21:31 - 07:25
DEN
-
SYD
39h 54m
1 stop
Multiple Airlines Logo
14:00 - 00:30
SYD
-
DEN
27h 30m
2 stops
$1,246Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
11:56 - 12:35
DEN
-
SYD
30h 39m
2 stops
Multiple Airlines Logo
06:00 - 00:30
SYD
-
DEN
35h 30m
2 stops
$1,249Multiple Airlines
Thu, 5 Mar - Mon, 23 Mar
Multiple Airlines Logo
22:29 - 07:25
DEN
-
SYD
38h 56m
1 stop
Multiple Airlines Logo
14:15 - 09:44
SYD
-
DEN
36h 29m
2 stops
$1,259Multiple Airlines
Sat, 7 Mar - Mon, 30 Mar
Multiple Airlines Logo
09:00 - 07:25
DEN
-
SYD
29h 25m
1 stop
Multiple Airlines Logo
14:15 - 09:44
SYD
-
DEN
36h 29m
2 stops
$1,267Multiple Airlines
Tue, 10 Mar - Mon, 30 Mar
Multiple Airlines Logo
13:35 - 07:30
DEN
-
SYD
25h 55m
1 stop
Multiple Airlines Logo
13:20 - 19:49
SYD
-
DEN
22h 29m
2 stops
$1,272Multiple Airlines
Tue, 12 May - Wed, 20 May

Air New Zealand flights from Denver to Sydney

Our best Air New Zealand deals on Denver to Sydney flight tickets
Air New Zealand
9 Feb
DEN15:48Denver Intl
22h 57m
2 stops
SYD08:45Sydney Kingsford Smith
28 Feb
SYD11:20Sydney Kingsford Smith
19h 08m
1 stop
DEN12:28Denver Intl
$2,348
Air New Zealand
9 Feb
DEN11:22Denver Intl
27h 23m
2 stops
SYD08:45Sydney Kingsford Smith
28 Feb
SYD19:15Sydney Kingsford Smith
41h 08m
2 stops
DEN18:23Denver Intl
$2,387
Air New Zealand
7 Feb
DEN13:35Denver Intl
25h 40m
1 stop
SYD09:15Sydney Kingsford Smith
14 Feb
SYD19:15Sydney Kingsford Smith
45h 29m
2 stops
DEN22:44Denver Intl
$2,415

Qantas Airways flights from Denver to Sydney

Our best Qantas Airways deals on Denver to Sydney flight tickets
Qantas Airways
15 Feb
DEN20:04Denver Intl
18h 56m
1 stop
SYD09:00Sydney Kingsford Smith
9 Mar
SYD11:20Sydney Kingsford Smith
25h 14m
1 stop
DEN19:34Denver Intl
$1,922
Qantas Airways
15 Feb
DEN20:04Denver Intl
18h 56m
1 stop
SYD09:00Sydney Kingsford Smith
9 Mar
SYD11:20Sydney Kingsford Smith
18h 09m
1 stop
DEN12:29Denver Intl
$1,924
Qantas Airways
15 Feb
DEN20:04Denver Intl
18h 56m
1 stop
SYD09:00Sydney Kingsford Smith
2 Mar
SYD11:20Sydney Kingsford Smith
19h 09m
1 stop
DEN12:29Denver Intl
$1,927

momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 4 February 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

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 24/2

11:30-12:35

2 stops31h 05m

Sydney Kingsford Smith

Thu 12/3

06:00-00:30

2 stops35h 30m

$1,182

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 4/3

21:31-07:25

1 stop39h 54m

Sydney Kingsford Smith

Wed 11/3

14:00-00:30

2 stops27h 30m

$1,222

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 5/3

11:56-12:35

2 stops30h 39m

Sydney Kingsford Smith

Thu 12/3

14:00-00:30

2 stops27h 30m

$1,226

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 4/3

21:31-07:25

1 stop39h 54m

Sydney Kingsford Smith

Wed 11/3

14:00-00:30

2 stops27h 30m

$1,227

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 4/3

21:31-07:25

1 stop39h 54m

Sydney Kingsford Smith

Wed 18/3

14:00-00:30

2 stops27h 30m

$1,240

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 4/3

21:31-07:25

1 stop39h 54m

Sydney Kingsford Smith

Wed 11/3

14:00-00:30

2 stops27h 30m

$1,246

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 5/3

11:56-12:35

2 stops30h 39m

Sydney Kingsford Smith

Mon 23/3

06:00-00:30

2 stops35h 30m

$1,249

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 7/3

22:29-07:25

1 stop38h 56m

Sydney Kingsford Smith

Mon 30/3

14:15-09:44

2 stops36h 29m

$1,259

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 10/3

09:00-07:25

1 stop29h 25m

Sydney Kingsford Smith

Mon 30/3

14:15-09:44

2 stops36h 29m

$1,267

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 12/5

13:35-07:30

1 stop25h 55m

Sydney Kingsford Smith

Wed 20/5

13:20-19:49

2 stops22h 29m

$1,272

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

The month of April is, on average, the cheapest month to fly to Sydney from Denver, with most prices found around $1,236. If you aren’t able to travel to Sydney during the month of April, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,291.

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 $1,625 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Denver for as low as $1,433 on momondo.

Can stopping save me money on Denver to Sydney flights?

You could potentially save up to 33% 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 February 2026, prices for Denver to Sydney flights are approximately 3% 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 return 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

23h 46m

Direct flights

None
The fastest flight from Denver to Sydney takes 23h 46m
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?

    There are 13398.4 km between Denver Intl and Sydney Kingsford Smith. Flights usually cover this in 23h 46m, depending on flying conditions and air traffic around both airports.

  • 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 refresh 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for 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 travel and health documents you'll need for your trip to Sydney Kingsford Smith Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Sydney Kingsford Smith Airport. It is always advisable to seek 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
Qantas AirwaysPriceFrom $1,173Free cancellationRating
7.5
985 reviews
Search Qantas Airways flights

Travelling to a place near Sydney?

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

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Denver to Sydney for you.

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

momondo does allow users to show only those flights to Sydney from Denver which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to Sydney from Denver are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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