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

Flights via San Francisco (SFO) offer the lowest average round-trip price of $1,804.

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 33m.

What is the cheapest airline that flies from Denver Intl to Sydney Kingsford Smith?

Alaska Airlines is the most popular carrier operating from Denver Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

Qantas Airways, Air Canada 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 37% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 7 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

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: 19h 34m.

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

Los Angeles (LAX) was the most common stop: 91% of momondo users choosing 1-stop flights on this route connected there.

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 October 2026, there are 7 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 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denver to Sydney

Round-trip

One-way

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Cheap round-trip flights

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1:10 pm - 10:05 pmDEN Denver Intl-SYD Sydney Kingsford Smith

39h 55m2 stops Los Angeles Nadi

2:00 pm - 9:40 amSYD Sydney Kingsford Smith-DEN Denver Intl

37h 40m3 stops Nadi Los Angeles San Francisco

$965Multiple Airlines

Sat, Oct 31 - Sat, Nov 7

1:10 pm - 12:35 pmDEN Denver Intl-SYD Sydney Kingsford Smith

30h 25m2 stops Los Angeles Nadi

2:00 pm - 11:49 pmSYD Sydney Kingsford Smith-DEN Denver Intl

27h 49m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

$967Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

4:05 pm - 8:35 amDEN Denver Intl-SYD Sydney Kingsford Smith

23h 30m2 stops Los Angeles Auckland Intl

2:05 pm - 5:56 pmSYD Sydney Kingsford Smith-DEN Denver Intl

21h 51m2 stops Auckland Intl Los Angeles

$1,183Air New Zealand

Mon, Oct 26 - Wed, Nov 11

11:31 am - 8:35 amDEN Denver Intl-SYD Sydney Kingsford Smith

27h 04m2 stops Los Angeles Auckland Intl

2:05 pm - 5:50 pmSYD Sydney Kingsford Smith-DEN Denver Intl

21h 45m2 stops Auckland Intl Los Angeles

$1,183Air New Zealand

Mon, Feb 1 - Wed, Feb 17

7:50 pm - 8:20 amDEN Denver Intl-SYD Sydney Kingsford Smith

19h 30m1 stop Vancouver Intl

11:20 am - 7:03 pmSYD Sydney Kingsford Smith-DEN Denver Intl

24h 43m2 stops Vancouver Intl Edmonton

$1,380Air Canada

Sun, Oct 18 - Sun, Nov 1

7:50 pm - 8:20 amDEN Denver Intl-SYD Sydney Kingsford Smith

19h 30m1 stop Vancouver Intl

11:20 am - 5:26 pmSYD Sydney Kingsford Smith-DEN Denver Intl

23h 06m1 stop Vancouver Intl

$1,381Air Canada

Sun, Oct 18 - Sun, Nov 1

12:22 pm - 7:50 amDEN Denver Intl-SYD Sydney Kingsford Smith

26h 28m1 stop Los Angeles

10:15 am - 11:26 amSYD Sydney Kingsford Smith-DEN Denver Intl

18h 11m1 stop Los Angeles

$1,549Delta

Tue, Oct 13 - Tue, Oct 20

7:51 pm - 8:30 amDEN Denver Intl-SYD Sydney Kingsford Smith

18h 39m1 stop Los Angeles

10:40 am - 5:25 pmSYD Sydney Kingsford Smith-DEN Denver Intl

24h 45m1 stop Los Angeles

$1,549Delta

Tue, Dec 8 - Wed, Dec 23

6:46 pm - 9:00 amDEN Denver Intl-SYD Sydney Kingsford Smith

20h 14m1 stop Los Angeles

11:20 am - 1:20 pmSYD Sydney Kingsford Smith-DEN Denver Intl

20h 00m1 stop Los Angeles

$1,675Qantas Airways

Wed, Jan 27 - Wed, Feb 10

6:51 pm - 9:00 amDEN Denver Intl-SYD Sydney Kingsford Smith

20h 09m1 stop Los Angeles

11:10 am - 11:30 amSYD Sydney Kingsford Smith-DEN Denver Intl

18h 20m1 stop Los Angeles

$1,702Qantas Airways

Sat, Nov 21 - Wed, Dec 30

Cheap last minute flights

Enter your travel dates to find the best prices.

3:39 pm - 7:55 amDEN Denver Intl-SYD Sydney Kingsford Smith

23h 16m1 stop San Francisco

11:55 am - 10:09 pmSYD Sydney Kingsford Smith-DEN Denver Intl

27h 14m2 stops Auckland Intl San Francisco

$1,519Air New Zealand

Tue, Oct 6 - Wed, Oct 14

9:35 am - 7:55 amDEN Denver Intl-SYD Sydney Kingsford Smith

29h 20m1 stop San Francisco

11:55 am - 10:09 pmSYD Sydney Kingsford Smith-DEN Denver Intl

27h 14m2 stops Auckland Intl San Francisco

$1,519Air New Zealand

Mon, Oct 5 - Wed, Oct 14

7:10 pm - 7:50 amDEN Denver Intl-SYD Sydney Kingsford Smith

19h 40m1 stop Los Angeles

10:15 am - 11:26 amSYD Sydney Kingsford Smith-DEN Denver Intl

18h 11m1 stop Los Angeles

$1,549Delta

Tue, Oct 6 - Tue, Oct 13

7:10 pm - 7:50 amDEN Denver Intl-SYD Sydney Kingsford Smith

19h 40m1 stop Los Angeles

10:15 am - 11:26 amSYD Sydney Kingsford Smith-DEN Denver Intl

18h 11m1 stop Los Angeles

$1,549Delta

Tue, Oct 6 - Wed, Oct 14

1:10 pm - 7:30 amDEN Denver Intl-SYD Sydney Kingsford Smith

25h 20m1 stop Los Angeles

12:15 pm - 9:30 amSYD Sydney Kingsford Smith-DEN Denver Intl

38h 15m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,719Multiple Airlines

Sat, Oct 3 - Fri, Oct 16

1:10 pm - 7:30 amDEN Denver Intl-SYD Sydney Kingsford Smith

25h 20m1 stop Los Angeles

12:15 pm - 9:30 amSYD Sydney Kingsford Smith-DEN Denver Intl

38h 15m2 stops Manila Ninoy Aquino Intl Los Angeles

$1,724Multiple Airlines

Sat, Oct 3 - Mon, Oct 12

6:11 pm - 8:05 amDEN Denver Intl-SYD Sydney Kingsford Smith

20h 54m1 stop Los Angeles

10:10 am - 11:21 amSYD Sydney Kingsford Smith-DEN Denver Intl

18h 11m1 stop Los Angeles

$2,236Qantas Airways

Sat, Oct 3 - Mon, Oct 5

7:25 pm - 7:55 amDEN Denver Intl-SYD Sydney Kingsford Smith

19h 30m1 stop San Francisco

11:20 am - 12:31 pmSYD Sydney Kingsford Smith-DEN Denver Intl

18h 11m1 stop San Francisco

$2,249United Airlines

Tue, Oct 6 - Tue, Oct 13

7:25 pm - 7:55 amDEN Denver Intl-SYD Sydney Kingsford Smith

19h 30m1 stop San Francisco

11:20 am - 12:31 pmSYD Sydney Kingsford Smith-DEN Denver Intl

18h 11m1 stop San Francisco

$2,299United Airlines

Sat, Oct 3 - Tue, Oct 13

7:00 am - 8:05 amDEN Denver Intl-SYD Sydney Kingsford Smith

32h 05m1 stop Los Angeles

6:50 pm - 9:55 pmSYD Sydney Kingsford Smith-DEN Denver Intl

20h 05m1 stop Los Angeles

$2,411Qantas Airways

Thu, Oct 8 - Sat, Oct 10

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Air New Zealand flights from Denver to Sydney

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

Air New Zealand

Oct 26

DEN4:05 pmDenver Intl

23h 30m

2 stops

SYD8:35 amSydney Kingsford Smith

Nov 11

SYD2:05 pmSydney Kingsford Smith

21h 51m

2 stops

DEN5:56 pmDenver Intl

$1,183

Air New Zealand

Feb 1

DEN1:29 pmDenver Intl

27h 06m

2 stops

SYD10:35 amSydney Kingsford Smith

Feb 17

SYD2:05 pmSydney Kingsford Smith

26h 06m

2 stops

DEN10:11 pmDenver Intl

$1,184

Air New Zealand

Feb 22

DEN9:52 amDenver Intl

28h 43m

2 stops

SYD8:35 amSydney Kingsford Smith

Mar 21

SYD2:05 pmSydney Kingsford Smith

35h 15m

2 stops

DEN8:20 amDenver Intl

$1,193

Delta flights from Denver to Sydney

Our best Delta deals on Denver to Sydney flight tickets

Delta

Oct 6

DEN7:10 pmDenver Intl

19h 40m

1 stop

SYD7:50 amSydney Kingsford Smith

Oct 12

SYD10:15 amSydney Kingsford Smith

18h 11m

1 stop

DEN11:26 amDenver Intl

$1,549

Delta

Oct 6

DEN10:45 amDenver Intl

28h 05m

2 stops

SYD7:50 amSydney Kingsford Smith

Oct 13

SYD10:15 amSydney Kingsford Smith

30h 40m

2 stops

DEN11:55 pmDenver Intl

$1,554

Delta

Oct 6

DEN7:10 pmDenver Intl

19h 40m

1 stop

SYD7:50 amSydney Kingsford Smith

Oct 16

SYD10:15 amSydney Kingsford Smith

18h 11m

1 stop

DEN11:26 amDenver Intl

$1,599

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sat 10/31

1:10 pm-10:05 pm

2 stops39h 55m

Sydney Kingsford Smith

Sat 11/7

2:00 pm-9:40 am

3 stops37h 40m

$965

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Wed 10/28

1:10 pm-12:35 pm

2 stops30h 25m

Sydney Kingsford Smith

Wed 11/4

2:00 pm-11:49 pm

3 stops27h 49m

$967

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 10/26

4:05 pm-8:35 am

2 stops23h 30m

Sydney Kingsford Smith

Wed 11/11

2:05 pm-5:56 pm

2 stops21h 51m

$1,183

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 2/1

11:31 am-8:35 am

2 stops27h 04m

Sydney Kingsford Smith

Wed 2/17

2:05 pm-5:50 pm

2 stops21h 45m

$1,183

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sun 10/18

7:50 pm-8:20 am

1 stop19h 30m

Sydney Kingsford Smith

Sun 11/1

11:20 am-7:03 pm

2 stops24h 43m

$1,380

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sun 10/18

7:50 pm-8:20 am

1 stop19h 30m

Sydney Kingsford Smith

Sun 11/1

11:20 am-5:26 pm

1 stop23h 06m

$1,381

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Tue 10/13

12:22 pm-7:50 am

1 stop26h 28m

Sydney Kingsford Smith

Tue 10/20

10:15 am-11:26 am

1 stop18h 11m

$1,549

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Tue 12/8

7:51 pm-8:30 am

1 stop18h 39m

Sydney Kingsford Smith

Wed 12/23

10:40 am-5:25 pm

1 stop24h 45m

$1,549

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Wed 1/27

6:46 pm-9:00 am

1 stop20h 14m

Sydney Kingsford Smith

Wed 2/10

11:20 am-1:20 pm

1 stop20h 00m

$1,675

Quickest round-trip

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sat 11/21

6:51 pm-9:00 am

1 stop20h 09m

Sydney Kingsford Smith

Wed 12/30

11:10 am-11:30 am

1 stop18h 20m

$1,702

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 typical price of a round-trip flight between Denver and Sydney?

Prices are currently low for flights on this route.

Typical prices usually range from $1,380 to $1,583.
The lowest price recently found on this route was $965.

What is the cheapest month to fly to Sydney?

In general, September 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 $1,180. If you are unable to visit Sydney during the month of September, then departing from Denver during the month May is also very affordable. Most momondo users find prices during this month for around $1,180.

How far in advance should I book a flight from Denver 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 $1,367 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 $1,061 on momondo.

Can stopping save me money on Denver to Sydney flights?

You could potentially save up to 9% 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 2026, prices for Denver to Sydney flights are approximately 40% 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

Best Price Found	$486
Fastest flight time	20h 35m
Direct flights	None

The best one-way flight to Sydney from Denver in the past 72 hours is $486. The best round-trip flight deal from Denver to Sydney found on momondo in the last 72 hours is $965.

The fastest flight from Denver to Sydney takes 20h 35m

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 20h 35m.
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 October 2026, there are 7 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 Air Canada (21%), United Airlines (17%), and Delta (13%).

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 $197	Free Cancellation	Rating 7.8 8,626 reviews	Search Delta flights
Fiji Airways	PriceFrom $684	Free Cancellation	Rating 8.0 259 reviews	Search Fiji Airways flights
American Airlines	PriceFrom $844	Free Cancellation	Rating 7.0 12,115 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $847	Free Cancellation	Rating 7.5 1,101 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.4 10,276 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,050	Free Cancellation	Rating 7.1 11,712 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,180	Free Cancellation	Rating 8.0 670 reviews	Search Air New Zealand flights

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Leura

Randwick

Cronulla

Manly

Terrigal

Lithgow

Charlestown

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

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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 12/9. 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 New Zealand flights from Denver to Sydney

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

Delta flights from Denver to Sydney

Our best Delta deals on Denver to Sydney flight tickets

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See travel insights to Sydney from

How to get the cheapest flight ticket from Denver to Sydney

What is the typical price of a round-trip flight between Denver and Sydney?

What is the cheapest month to fly to Sydney?

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

Can stopping save me money on Denver to Sydney flights?

How have Denver to Sydney flight prices changed over time?

What is the cheapest airline that flies from Denver Intl to Sydney Kingsford Smith?

What airlines fly to Sydney?

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

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

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

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

When to book flights from Denver to Sydney

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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?

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

Fly your favorite airline to Sydney

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Sydney

List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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