What airlines fly to Sydney?

Qantas Airways, American Airlines and United Airlines are the top three most popular airlines that fly to Sydney from Denver according to our data. Qantas Airways is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 8 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from Denver to Sydney?

Flights via Dallas (DFW) offer the lowest average round-trip price of $836.

Which layover airport has the shortest travel time from Denver to Sydney?

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 20h 28m.

Which airport is the most popular layover for flights between Denver and Sydney?

Los Angeles (LAX) was the most common stop: 84% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Denver to Sydney?

San Francisco (SFO) has the shortest average layover time for this route: 2h 13m.

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?

As of December 2025, there are 8 operators available to choose from 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.

$492 Cheap Flights from Denver to Sydney in 2025/26

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11:00 am - 10:05 pm

DEN

SYD

41h 05m2 stops

2:00 pm - 11:31 pm

SYD

DEN

27h 31m2 stops

$836Multiple Airlines

Thu, Jan 29 - Thu, Feb 5

7:05 pm - 9:35 am

DEN

SYD

20h 30m1 stop

11:20 am - 6:05 pm

SYD

DEN

24h 45m2 stops

$954Air Canada

Tue, Feb 3 - Wed, Feb 25

7:05 pm - 7:20 am

DEN

SYD

20h 15m1 stop

6:30 am - 12:33 pm

SYD

DEN

22h 03m2 stops

$969Air Canada

Tue, Apr 14 - Tue, Apr 21

7:05 pm - 9:35 am

DEN

SYD

20h 30m1 stop

11:20 am - 10:23 am

SYD

DEN

41h 03m2 stops

$971Air Canada

Sun, Feb 1 - Sun, Feb 15

7:05 pm - 2:40 pm

DEN

SYD

25h 35m2 stops

11:20 am - 4:30 pm

SYD

DEN

23h 10m1 stop

$974Air Canada

Tue, Jan 20 - Tue, Jan 27

4:42 pm - 7:05 am

DEN

SYD

22h 23m1 stop

9:10 am - 4:04 pm

SYD

DEN

22h 54m1 stop

$978American Airlines

Sun, Apr 26 - Sun, May 10

11:59 am - 7:20 am

DEN

SYD

27h 21m1 stop

7:00 pm - 4:34 pm

SYD

DEN

37h 34m2 stops

$979Multiple Airlines

Sun, Apr 5 - Sat, Apr 18

7:05 pm - 9:35 am

DEN

SYD

20h 30m1 stop

11:20 am - 5:44 pm

SYD

DEN

24h 24m1 stop

$987Air Canada

Sun, Feb 1 - Sun, Feb 15

7:05 pm - 2:40 pm

DEN

SYD

25h 35m2 stops

8:00 am - 11:37 am

SYD

DEN

21h 37m2 stops

$989Air Canada

Sun, Mar 1 - Sun, Mar 8

7:05 pm - 11:40 am

DEN

SYD

24h 35m2 stops

7:00 pm - 12:33 pm

SYD

DEN

33h 33m2 stops

$995Multiple Airlines

Sun, Apr 5 - Sat, Apr 18

Air Canada flights from Denver to Sydney

Our best Air Canada deals on Denver to Sydney flight tickets

Air Canada

Feb 3

DEN7:05 pmDenver Intl

20h 30m

1 stop

SYD9:35 amSydney Kingsford Smith

Feb 25

SYD11:20 amSydney Kingsford Smith

19h 17m

1 stop

DEN12:37 pmDenver Intl

$954

Find similar

Air Canada

Apr 14

DEN7:05 pmDenver Intl

20h 15m

1 stop

SYD7:20 amSydney Kingsford Smith

Apr 21

SYD6:30 amSydney Kingsford Smith

22h 03m

2 stops

DEN12:33 pmDenver Intl

$969

Find similar

Air Canada

Feb 1

DEN7:05 pmDenver Intl

20h 30m

1 stop

SYD9:35 amSydney Kingsford Smith

Feb 15

SYD11:20 amSydney Kingsford Smith

41h 03m

2 stops

DEN10:23 amDenver Intl

$971

Find similar

Qantas Airways flights from Denver to Sydney

Our best Qantas Airways deals on Denver to Sydney flight tickets

Qantas Airways

Feb 15

DEN8:04 pmDenver Intl

18h 56m

1 stop

SYD9:00 amSydney Kingsford Smith

Mar 4

SYD11:20 amSydney Kingsford Smith

26h 13m

1 stop

DEN7:33 pmDenver Intl

$1,098

Find similar

Qantas Airways

Dec 22

DEN8:12 pmDenver Intl

41h 13m

1 stop

SYD7:25 amSydney Kingsford Smith

Jan 9

SYD10:00 pmSydney Kingsford Smith

38h 53m

2 stops

DEN6:53 pmDenver Intl

$2,116

Find similar

Qantas Airways

Dec 22

DEN8:12 pmDenver Intl

41h 13m

1 stop

SYD7:25 amSydney Kingsford Smith

Jan 9

SYD7:05 amSydney Kingsford Smith

29h 48m

2 stops

DEN6:53 pmDenver Intl

$2,240

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 1/29

11:00 am-10:05 pm

2 stops41h 05m

Sydney Kingsford Smith

Thu 2/5

2:00 pm-11:31 pm

2 stops27h 31m

$836

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 2/3

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Wed 2/25

11:20 am-6:05 pm

2 stops24h 45m

$954

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 4/14

7:05 pm-7:20 am

1 stop20h 15m

Sydney Kingsford Smith

Tue 4/21

6:30 am-12:33 pm

2 stops22h 03m

$969

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/1

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Sun 2/15

11:20 am-10:23 am

2 stops41h 03m

$971

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 1/20

7:05 pm-2:40 pm

2 stops25h 35m

Sydney Kingsford Smith

Tue 1/27

11:20 am-4:30 pm

1 stop23h 10m

$974

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 4/26

4:42 pm-7:05 am

1 stop22h 23m

Sydney Kingsford Smith

Sun 5/10

9:10 am-4:04 pm

1 stop22h 54m

$978

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 4/5

11:59 am-7:20 am

1 stop27h 21m

Sydney Kingsford Smith

Sat 4/18

7:00 pm-4:34 pm

2 stops37h 34m

$979

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 2/1

7:05 pm-9:35 am

1 stop20h 30m

Sydney Kingsford Smith

Sun 2/15

11:20 am-5:44 pm

1 stop24h 24m

$987

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 3/1

7:05 pm-2:40 pm

2 stops25h 35m

Sydney Kingsford Smith

Sun 3/8

8:00 am-11:37 am

2 stops21h 37m

$989

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sun 4/5

7:05 pm-11:40 am

2 stops24h 35m

Sydney Kingsford Smith

Sat 4/18

7:00 pm-12:33 pm

2 stops33h 33m

$995

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

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 $864. If you are unable to visit Sydney during the month of April, then departing from Denver during the month May is also very affordable. Most momondo users find prices during this month for around $865.

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 $1,075 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 $990 on momondo.

Can stopping save me money on Denver to Sydney flights?

You could potentially save up to 5% 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 December 2025, prices for Denver to Sydney flights are approximately 49% 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

Fastest flight time	23h 09m
Direct flights	None

The fastest flight from Denver to Sydney takes 23h 09m

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 23h 09m.
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?
As of December 2025, there are 8 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Denver to Sydney is Qantas Airways (29% of total bookings). The next most popular airlines are American Airlines (26%), United Airlines (14%), and Air Canada (11%).

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
Fiji Airways	PriceFrom $684	Free Cancellation	Rating 8.1 210 reviews	Search Fiji Airways flights
Alaska Airlines	PriceFrom $745	Free Cancellation	Rating 8.0 11,475 reviews	Search Alaska Airlines flights
Delta	PriceFrom $786	Free Cancellation	Rating 7.9 8,006 reviews	Search Delta flights
Qantas Airways	PriceFrom $803	Free Cancellation	Rating 7.5 947 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $826	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines flights
Air New Zealand	PriceFrom $834	Free Cancellation	Rating 8.0 553 reviews	Search Air New Zealand flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.4 9,091 reviews	Search United Airlines flights
Air Canada	PriceFrom $980	Free Cancellation	Rating 7.1 10,534 reviews	Search Air Canada flights

Parramatta

Bondi Beach

Katoomba

Wollongong

Randwick

Coogee

Manly

Penrith

Cronulla

Lithgow

Leura

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.

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Flights to Melbournefrom $674

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Flights to Coolangattafrom $965

Flights to Hobartfrom $987

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Cheap flights from Denver to Sydney from $492

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 2/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air Canada flights from Denver to Sydney

Our best Air Canada deals on Denver to Sydney flight tickets

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Our best Qantas Airways deals on Denver to Sydney flight tickets

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How to get the cheapest flight ticket from Denver to Sydney

What is the cheapest month to fly to Sydney?

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?

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

Can stopping save me money on Denver to Sydney flights?

You could potentially save up to 5% 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 December 2025, prices for Denver to Sydney flights are approximately 49% cheaper when compared to flights at the same time last year.

What airlines fly to Sydney?

Which airport is the most popular layover for flights between Denver and Sydney?

Los Angeles (LAX) was the most common stop: 84% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Denver to Sydney?

Flights via Dallas (DFW) offer the lowest average round-trip price of $836.

Which layover airport has the shortest travel time from Denver to Sydney?

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 20h 28m.

Which layover airport has the shortest connection time from Denver to Sydney?

San Francisco (SFO) has the shortest average layover time for this route: 2h 13m.

When to book flights from Denver to Sydney

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

Direct flights

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

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

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?

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

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

Traveling to a place near Sydney?

Why use momondo?

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

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

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

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

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales