How long is the flight from Porto to Sydney?

Departing from Porto to Sydney will take you 36h 15m. Porto and Sydney are separated by a distance of 18057 km.

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

What is the cheapest time of day to fly from OPO to SYD?

When flying from Porto to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Porto to Sydney that include hotel bookings?

Yes. In addition to deals on Porto to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Porto to Sydney?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Sydney.

Can I find deals for business class flights from Porto to Sydney?

Yes. Cheapflights offers flight deals from Porto to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$839+ Cheap Flights from Porto to Sydney

Cheap flight deals from Porto to Sydney

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Porto to Sydney
Explore the most affordable flight options available from Porto to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Fri 18/914:50 -

3 stops33h 00m

Thu 1/1020:50 -

2 stops34h 15m

Deal found 19/8$1,839

Mon 7/917:25 -

2 stops34h 10m

Tue 22/915:40 -

2 stops35h 10m

Deal found 19/8$1,963

Sat 26/913:55 -

2 stops34h 05m

Sun 4/1016:40 -

2 stops27h 20m

Deal found 16/8$2,103

Fri 18/910:40 -

2 stops47h 30m

Thu 1/1021:05 -

2 stops45h 40m

Deal found 19/8$2,164

Mon 7/910:40 -

2 stops47h 30m

Tue 22/921:05 -

2 stops27h 35m

Deal found 19/8$2,168

Thu 5/1120:05 -

2 stops47h 45m

Mon 23/1122:10 -

2 stops45h 00m

Deal found 16/8$2,171

Fri 11/910:40 -

2 stops47h 30m

Thu 24/921:05 -

2 stops27h 40m

Deal found 19/8$2,176

Sat 26/913:55 -

2 stops34h 05m

Sat 3/1020:50 -

2 stops35h 15m

Deal found 16/8$2,241

Sat 7/1120:40 -

2 stops35h 40m

Wed 11/1115:50 -

2 stops35h 10m

Deal found 18/8$2,275

Find flight deals from Porto to Sydney

Round-trip from	$1,839
One-way from	$839
Popular in	July
Cheapest in	June
Average price	$2,438

18/9-1/10
5 total stops
67h 15m total
Porto to Sydney

Search Deals

27/8
2 total stops
56h 35m total
Porto to Sydney

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($183 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($122 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Thu 5/11

20:05-19:20

2 stops36h 15m

Sydney Kingsford Smith

Mon 23/11

22:10-21:15

2 stops34h 05m

$2,183

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Tue 12/1

08:20-19:20

2 stops48h 00m

Sydney Kingsford Smith

Sun 31/1

22:10-08:10

2 stops45h 00m

$2,258

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 7/11

20:40-19:20

2 stops35h 40m

Sydney Kingsford Smith

Wed 11/11

15:50-16:00

2 stops35h 10m

$2,275

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Tue 12/1

08:20-19:20

2 stops48h 00m

Sydney Kingsford Smith

Sun 31/1

22:10-20:00

2 stops32h 50m

$2,277

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sun 4/10

06:15-10:45

3 stops42h 30m

Sydney Kingsford Smith

Sun 11/10

22:05-09:40

2 stops45h 35m

$2,474

Fastest return journey

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Tue 12/1

16:10-08:10

3 stops29h 00m

Sydney Kingsford Smith

Sun 31/1

16:30-10:35

2 stops29h 05m

$2,630

Cheapest one-way

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Thu 27/8

16:50-08:20

3 stops54h 30m

$1,030

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Tue 1/9

12:35-07:00

2 stops57h 25m

$1,581

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Tue 1/9

20:10-06:10

2 stops49h 00m

$1,610

Fastest single journey

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Tue 1/9

18:00-19:10

3 stops40h 10m

$2,068

Flights are sorted by cheapest return flights first.

Deals found on 16/8

Sorted by cheapest first

Best time to book a flight from Porto to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Porto with our price prediction graph.

OPO-SYD

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

How long is the flight from Porto to Sydney?
Departing from Porto to Sydney will take you 36h 15m. Porto and Sydney are separated by a distance of 18057 km.
Can I find deals for flights from Porto to Sydney that include hotel bookings?
Yes. In addition to deals on Porto to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Porto to Sydney?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Sydney.
Can I find deals for business class flights from Porto to Sydney?
Yes. Cheapflights offers flight deals from Porto to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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How does Cheapflights help users find flights from Porto to Sydney?

Deals for Porto to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Porto to Sydney?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Porto to Sydney for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Porto to Sydney with no change fees?

Need flexible booking options for your flight to Sydney from Porto? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Porto to Sydney become cheaper?

Yes, Cheapflights offers price alerts on Porto to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Porto to Sydney from $839

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Porto to Sydney

Cheapest flights from Porto to SydneyExplore the most affordable flight options available from Porto to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Explore the most affordable flight options available from Porto to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from Porto to SydneyDiscover carefully curated flight deals from Porto to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Discover carefully curated flight deals from Porto to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Porto to SydneyDiscover last-minute flight deals from Porto to Sydney. Data last updated 21 August 2026 and is based on user searches.

Discover last-minute flight deals from Porto to Sydney. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Porto to SydneySearch for one-way flight options from Porto to Sydney. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Search for one-way flight options from Porto to Sydney. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

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Best time to book a flight from Porto to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Porto with our price prediction graph.

Related info for your journey

How long is the flight from Porto to Sydney?

Can I find deals for flights from Porto to Sydney that include hotel bookings?

How can I find direct flights from Porto to Sydney?

Can I find deals for business class flights from Porto to Sydney?

Travelling to a place near Sydney?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Porto to Sydney

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Sydney by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to New South Wales

Book a non-stop flight to one of these other cities located in New South Wales.

Search flights from Porto to Sydney by cabin class

Find flights from Porto to Sydney, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Porto and Sydney flights

Browse other Porto and Sydney flight options. Last updated on 21 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Other flights to Sydney

Explore flights to Sydney departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 21 August 2026.

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How does Cheapflights help users find flights from Porto to Sydney?

Why should you use Cheapflights to find cheap flight tickets from Porto to Sydney?

Can Cheapflights find flights from Porto to Sydney with no change fees?

Can Cheapflights notify me if prices for flights from Porto to Sydney become cheaper?

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Cheapest flights from Porto to Sydney
Explore the most affordable flight options available from Porto to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from Porto to Sydney
Discover carefully curated flight deals from Porto to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Porto to Sydney
Discover last-minute flight deals from Porto to Sydney. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Porto to Sydney
Search for one-way flight options from Porto to Sydney. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.