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Cheap flights from Porto to Sydney from $960

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — SYD
9 Sep — 16 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap 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 10 August 2026.

Sat 17/1000:35 -
2 stops26h 10m
Fri 6/1121:30 -
2 stops35h 10m
Deal found 6/8$1,880
Sun 6/916:05 -
2 stops29h 05m
Tue 22/920:50 -
2 stops43h 00m
Deal found 6/8$1,902
Sat 5/909:00 -
2 stops39h 00m
Fri 18/911:00 -
2 stops45h 40m
Deal found 8/8$1,922
Wed 26/807:00 -
2 stops41h 00m
Tue 1/911:00 -
2 stops44h 55m
Deal found 8/8$1,943
Sat 5/920:10 -
2 stops49h 00m
Fri 18/915:40 -
2 stops48h 10m
Deal found 7/8$1,959
Sun 13/913:45 -
2 stops34h 35m
Sat 26/920:50 -
2 stops32h 25m
Deal found 5/8$1,969
Mon 7/916:05 -
2 stops29h 25m
Mon 21/920:50 -
2 stops55h 30m
Deal found 5/8$2,000
Sat 5/1220:10 -
2 stops34h 35m
Fri 1/121:30 -
2 stops56h 50m
Deal found 5/8$2,004
Sun 6/916:05 -
2 stops29h 05m
Sun 20/915:40 -
2 stops36h 40m
Deal found 5/8$2,006
Wed 16/920:40 -
2 stops35h 30m
Wed 23/914:50 -
2 stops50h 10m
Deal found 10/8$2,008
Tue 22/915:00 -
3 stops32h 50m
Tue 29/921:05 -
2 stops27h 35m
Deal found 8/8$2,013

Find 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 10 August 2026.

Round-trip from

$1,880

One-way from

$960

Popular in

July

Cheapest in

June

Average price

$2,454
17/10-6/11
  • 17/10-6/11
  • 4 total stops
  • 61h 20m total
  • Porto to Sydney
Search Deals
6/10
  • 6/10
  • 3 total stops
  • 53h 35m total
  • Porto to Sydney
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($187 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($124 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

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 10 August 2026.
Use the filters below to find and compare flights from Porto to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 5/9

21:00-16:50

2 stops34h 50m

Sydney Kingsford Smith

Mon 21/9

20:50-20:05

2 stops32h 15m

$1,871

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 5/9

09:00-09:00

2 stops39h 00m

Sydney Kingsford Smith

Fri 18/9

11:00-23:40

2 stops45h 40m

$1,922

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 5/12

20:10-17:45

2 stops34h 35m

Sydney Kingsford Smith

Fri 1/1

21:30-19:20

2 stops56h 50m

$2,004

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Wed 16/9

20:40-17:10

2 stops35h 30m

Sydney Kingsford Smith

Wed 23/9

14:50-08:00

2 stops50h 10m

$2,008

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Thu 5/11

20:05-06:50

2 stops47h 45m

Sydney Kingsford Smith

Mon 9/11

15:50-21:15

2 stops40h 25m

$2,076

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Fri 11/9

16:05-06:30

2 stops29h 25m

Sydney Kingsford Smith

Thu 24/9

20:50-19:20

2 stops55h 30m

$2,199

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Mon 21/12

20:40-19:20

2 stops59h 40m

Sydney Kingsford Smith

Sun 17/1

21:10-07:40

2 stops45h 30m

$2,257

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Fri 18/9

11:15-06:05

2 stops33h 50m

Sydney Kingsford Smith

Thu 1/10

14:35-20:30

2 stops38h 55m

$2,334
Fastest return journey

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Fri 11/9

22:00-17:10

2 stops34h 10m

Sydney Kingsford Smith

Thu 24/9

14:50-13:00

2 stops31h 10m

$2,376

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Fri 4/9

16:05-06:10

2 stops29h 05m

Sydney Kingsford Smith

Fri 11/9

15:40-19:20

2 stops36h 40m

$2,383

Flights are sorted by cheapest return flights first.

Deals found on 7/8

Showing 1-10 of 20 resultsSorted by cheapest first
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.

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 29h 05m. 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

Travelling to a place near Sydney?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Porto to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Lisbon to Sydney flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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