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Cheap flights from Porto to Sydney from $1,910

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/11. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — SYD
30 nov — 7 dez1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Porto to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 31 outubro 2025.

Round-trip from

$2,071

Popular in

April

Cheapest in

January

Average price

$2,412
8/3-29/3
  • 8/3-29/3
  • 4 total stops
  • 86h 40m total
  • Porto to Sydney
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($86 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease ($71 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Find flight deals from Porto to Sydney

Enter your travel dates to find the best prices.

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 31 outubro 2025.

qui 13/1111:35OPO - SYD
3 stops35h 25mMultiple Airlines
qua 26/1112:00SYD - OPO
2 stops32h 50mMultiple Airlines
Deal found 30/10$2,074
dom 9/1113:10OPO - SYD
2 stops33h 50mMultiple Airlines
sex 14/1114:20SYD - OPO
3 stops32h 45mMultiple Airlines
Deal found 29/10$2,211
ter 25/1112:35OPO - SYD
2 stops33h 30mUnited Airlines
ter 24/214:00SYD - OPO
2 stops30h 30mUnited Airlines
Deal found 31/10$2,231
qui 6/1112:35OPO - SYD
2 stops57h 30mUnited Airlines
qua 19/1111:20SYD - OPO
2 stops33h 10mUnited Airlines
Deal found 30/10$2,238
qui 13/1112:35OPO - SYD
2 stops33h 30mUnited Airlines
qua 26/1111:20SYD - OPO
2 stops33h 10mUnited Airlines
Deal found 30/10$2,240
seg 1/1212:35OPO - SYD
2 stops33h 30mUnited Airlines
ter 24/211:20SYD - OPO
2 stops33h 10mUnited Airlines
Deal found 29/10$2,246

Cheapflights Fare Finder

 
Customise your flight search to find flights from Porto 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, Cheapflights users made 647,157 searches. Data last updated 31 outubro 2025.
Use the filters below to find and compare flights from Porto to Sydney that are best for you.

Fly from

Porto

Fly to

Sydney

Route

Depart

Return

Price

PortoSydney

OPO - SYD

OPOSYD

Porto

dom 8/3

06:00-10:00

2 stops41h 00m

Sydney Kingsford Smith

dom 29/3

12:00-23:40

2 stops45h 40m

$2,071

PortoSydney

OPO - SYD

OPOSYD

Porto

qui 13/11

12:35-10:00

2 stops34h 25m

Sydney Kingsford Smith

qua 26/11

12:00-09:50

2 stops32h 50m

$2,171

PortoSydney

OPO - SYD

OPOSYD

Porto

ter 25/11

12:35-09:05

2 stops33h 30m

Sydney Kingsford Smith

ter 24/2

14:00-09:30

2 stops30h 30m

$2,231

PortoSydney

OPO - SYD

OPOSYD

Porto

qui 12/3

12:35-09:05

2 stops33h 30m

Sydney Kingsford Smith

seg 16/3

11:50-09:30

2 stops32h 40m

$2,232

PortoSydney

OPO - SYD

OPOSYD

Porto

qui 13/11

12:35-09:05

2 stops33h 30m

Sydney Kingsford Smith

qua 26/11

11:20-09:30

2 stops33h 10m

$2,240

PortoSydney

OPO - SYD

OPOSYD

Porto

seg 1/12

12:35-09:05

2 stops33h 30m

Sydney Kingsford Smith

ter 24/2

11:20-09:30

2 stops33h 10m

$2,246

PortoSydney

OPO - SYD

OPOSYD

Porto

qua 26/11

16:10-19:20

2 stops40h 10m

Sydney Kingsford Smith

sex 5/12

21:15-09:55

2 stops47h 40m

$2,514

PortoSydney

OPO - SYD

OPOSYD

Porto

sáb 17/1

19:05-13:05

3 stops55h 00m

$3,691

PortoSydney

OPO - SYD

OPOSYD

Porto

qui 15/1

21:55-20:15

3 stops59h 20m

$3,712

PortoSydney

OPO - SYD

OPOSYD

Porto

dom 18/1

09:05-13:05

3 stops41h 00m

$3,717

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Showing 1-10 of 14 results
1
2

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.
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.

Cheapflights Insights

Everything you need to know about your flight from Porto to Sydney

What is the cheapest month to book a flight from Porto to Sydney?

Currently, March is the cheapest month in which you can book a flight from Porto to Sydney (average of $1,843). Flying from Porto to Sydney in April is currently the most expensive (average of $2,733). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Porto to Sydney?

Related info for your journey

Find useful and relevant information for your journey from Porto to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Porto to Sydney?

    Departing from Porto to Sydney will take you 33h 30m. 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.

  • What is the cheapest month to book a flight from Porto to Sydney?

    Currently, March is the cheapest month in which you can book a flight from Porto to Sydney (average of $1,843). Flying from Porto to Sydney in April is currently the most expensive (average of $2,733). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

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

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Alternative routes for Porto to Sydney

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Fly with Cheapflights

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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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