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 38% 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 connection time from Denver to Sydney?

San Francisco (SFO) has the shortest average layover time for this route: 1h 53m.

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

Los Angeles (LAX) was the most common stop: 80% of momondo users choosing 1-stop flights on this route connected there.

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 01m.

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 January 2026, 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.

$486 Cheap Flights from Denver to Sydney in 2026

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9:00 am - 12:35 pm

DEN

SYD

34h 35m2 stops

2:00 pm - 12:30 am

SYD

DEN

27h 30m2 stops

$833Multiple Airlines

Mon, Mar 9 - Tue, Mar 24

6:05 am - 12:35 pm

DEN

SYD

36h 30m2 stops

2:00 pm - 11:29 pm

SYD

DEN

27h 29m2 stops

$847Multiple Airlines

Mon, Feb 2 - Mon, Feb 9

9:00 am - 12:35 pm

DEN

SYD

34h 35m2 stops

2:00 pm - 12:30 am

SYD

DEN

27h 30m2 stops

$895Multiple Airlines

Wed, Mar 11 - Sun, Mar 22

9:00 am - 12:35 pm

DEN

SYD

34h 35m2 stops

6:00 am - 12:30 am

SYD

DEN

35h 30m2 stops

$902Multiple Airlines

Mon, Mar 9 - Fri, Mar 13

9:00 am - 12:35 pm

DEN

SYD

34h 35m2 stops

2:00 pm - 12:30 am

SYD

DEN

27h 30m2 stops

$933Multiple Airlines

Thu, Mar 12 - Sat, Mar 21

6:05 am - 12:35 pm

DEN

SYD

36h 30m2 stops

2:00 pm - 11:29 pm

SYD

DEN

27h 29m2 stops

$959Multiple Airlines

Mon, Feb 2 - Mon, Feb 9

9:00 am - 12:35 pm

DEN

SYD

33h 35m2 stops

2:00 pm - 12:30 am

SYD

DEN

27h 30m2 stops

$974Multiple Airlines

Sat, Mar 7 - Sun, Mar 22

12:00 pm - 7:25 am

DEN

SYD

25h 25m1 stop

11:20 am - 6:00 pm

SYD

DEN

24h 40m1 stop

$976Multiple Airlines

Sat, Feb 7 - Sat, Feb 14

8:04 pm - 9:00 am

DEN

SYD

19h 56m1 stop

11:20 am - 12:29 pm

SYD

DEN

18h 09m1 stop

$977Qantas Airways

Mon, Mar 9 - Tue, Mar 24

1:13 pm - 7:25 am

DEN

SYD

24h 12m1 stop

11:20 am - 12:29 pm

SYD

DEN

18h 09m1 stop

$978Qantas Airways

Tue, Mar 3 - Tue, Mar 10

Air New Zealand flights from Denver to Sydney

Our best Air New Zealand deals on Denver to Sydney flight tickets

Air New Zealand

Mar 2

DEN5:20 amDenver Intl

35h 10m

2 stops

SYD10:30 amSydney Kingsford Smith

Mar 9

SYD9:55 amSydney Kingsford Smith

25h 27m

2 stops

DEN6:22 pmDenver Intl

$1,125

Find similar

Air New Zealand

Jan 10

DEN5:50 pmDenver Intl

21h 25m

1 stop

SYD9:15 amSydney Kingsford Smith

Jan 24

SYD7:15 pmSydney Kingsford Smith

39h 22m

2 stops

DEN4:37 pmDenver Intl

$2,014

Find similar

Air New Zealand

Jan 8

DEN1:35 pmDenver Intl

25h 40m

1 stop

SYD9:15 amSydney Kingsford Smith

Jan 16

SYD9:55 amSydney Kingsford Smith

26h 23m

2 stops

DEN6:18 pmDenver Intl

$2,040

Find similar

United Airlines flights from Denver to Sydney

Our best United Airlines deals on Denver to Sydney flight tickets

United Airlines

Jan 17

DEN8:32 pmDenver Intl

40h 28m

1 stop

SYD7:00 amSydney Kingsford Smith

Feb 10

SYD12:10 pmSydney Kingsford Smith

18h 13m

1 stop

DEN12:23 pmDenver Intl

$1,674

Find similar

United Airlines

Jan 17

DEN9:05 pmDenver Intl

39h 15m

1 stop

SYD6:20 amSydney Kingsford Smith

Feb 10

SYD12:10 pmSydney Kingsford Smith

18h 13m

1 stop

DEN12:23 pmDenver Intl

$1,675

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 3/9

9:00 am-12:35 pm

2 stops34h 35m

Sydney Kingsford Smith

Tue 3/24

2:00 pm-12:30 am

2 stops27h 30m

$833

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 2/2

6:05 am-12:35 pm

2 stops36h 30m

Sydney Kingsford Smith

Mon 2/9

2:00 pm-11:29 pm

2 stops27h 29m

$847

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 3/11

9:00 am-12:35 pm

2 stops34h 35m

Sydney Kingsford Smith

Sun 3/22

2:00 pm-12:30 am

2 stops27h 30m

$895

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 3/9

9:00 am-12:35 pm

2 stops34h 35m

Sydney Kingsford Smith

Fri 3/13

6:00 am-12:30 am

2 stops35h 30m

$902

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 3/12

9:00 am-12:35 pm

2 stops34h 35m

Sydney Kingsford Smith

Sat 3/21

2:00 pm-12:30 am

2 stops27h 30m

$933

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 2/2

6:05 am-12:35 pm

2 stops36h 30m

Sydney Kingsford Smith

Mon 2/9

2:00 pm-11:29 pm

2 stops27h 29m

$959

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 3/7

9:00 am-12:35 pm

2 stops33h 35m

Sydney Kingsford Smith

Sun 3/22

2:00 pm-12:30 am

2 stops27h 30m

$974

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Sat 2/7

12:00 pm-7:25 am

1 stop25h 25m

Sydney Kingsford Smith

Sat 2/14

11:20 am-6:00 pm

1 stop24h 40m

$976

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Mon 3/9

8:04 pm-9:00 am

1 stop19h 56m

Sydney Kingsford Smith

Tue 3/24

11:20 am-12:29 pm

1 stop18h 09m

$977

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 3/3

1:13 pm-7:25 am

1 stop24h 12m

Sydney Kingsford Smith

Tue 3/10

11:20 am-12:29 pm

1 stop18h 09m

$978

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 $866. 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 $903.

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 $1,131 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 $1,004 on momondo.

Can stopping save me money on Denver to Sydney flights?

You could potentially save up to 10% 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 January 2026, prices for Denver to Sydney flights are approximately 10% 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	24h 30m
Direct flights	None

The fastest flight from Denver to Sydney takes 24h 30m

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 24h 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?
As of January 2026, 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 (30% of total bookings). The next most popular airlines are American Airlines (23%), United Airlines (15%), 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
Delta	PriceFrom $277	Free Cancellation	Rating 7.9 8,025 reviews	Search Delta flights
Fiji Airways	PriceFrom $684	Free Cancellation	Rating 8.0 216 reviews	Search Fiji Airways flights
Alaska Airlines	PriceFrom $745	Free Cancellation	Rating 8.0 11,661 reviews	Search Alaska Airlines flights
Qantas Airways	PriceFrom $802	Free Cancellation	Rating 7.5 967 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $825	Free Cancellation	Rating 7.2 11,095 reviews	Search American Airlines flights
Air New Zealand	PriceFrom $834	Free Cancellation	Rating 8.0 565 reviews	Search Air New Zealand flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.4 9,139 reviews	Search United Airlines flights
Air Canada	PriceFrom $980	Free Cancellation	Rating 7.1 10,603 reviews	Search Air Canada flights

Parramatta

Bondi Beach

Katoomba

Wollongong

Randwick

Coogee

Manly

Cronulla

Lithgow

Penrith

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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Cheap flights from Denver to Sydney from $486

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 1/26. 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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See travel insights to Sydney from

How to get the cheapest flight ticket from Denver to Sydney

What is the cheapest month to fly 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 10% 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 January 2026, prices for Denver to Sydney flights are approximately 10% 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: 80% 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 01m.

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

San Francisco (SFO) has the shortest average layover time for this route: 1h 53m.

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