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Cheap flights from Porto to Sydney from $695

OPO — SYD
12 Oct — 19 Oct1
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

Sat 7/1120:00 -
2 stops47h 55m
Sat 21/1116:20 -
2 stops37h 55m
Deal found 11/9$1,662
Fri 6/1118:05 -
2 stops49h 50m
Thu 19/1116:20 -
2 stops35h 55m
Deal found 11/9$1,681
Thu 29/1006:00 -
2 stops27h 20m
Wed 11/1115:15 -
2 stops33h 10m
Deal found 8/9$1,706
Fri 6/1120:40 -
2 stops35h 40m
Thu 19/1116:20 -
2 stops35h 55m
Deal found 11/9$1,883
Fri 18/913:40 -
3 stops34h 10m
Wed 7/1016:40 -
2 stops27h 30m
Deal found 9/9$1,905
Thu 29/1020:40 -
2 stops35h 40m
Thu 12/1116:20 -
2 stops35h 55m
Deal found 8/9$2,008
Wed 11/1108:45 -
2 stops35h 05m
Sun 15/1115:50 -
2 stops40h 25m
Deal found 11/9$2,070
Mon 21/1208:45 -
2 stops35h 05m
Sun 17/122:10 -
2 stops45h 00m
Deal found 8/9$2,158

Find flight deals from Porto to Sydney

Round-trip from

$1,662

One-way from

$695

Popular in

July

Cheapest in

September

Average price

$2,057
British Airways
  • British Airways
  • 7/11-21/11
  • 4 total stops
  • 85h 50m total
  • Porto to Sydney
Search Deals
7/11-31/12
  • 7/11-31/12
  • 2 total stops
  • 57h 15m total
  • Porto to Sydney
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($537 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($127 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

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

Fly from

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Route

Depart

Return

Price

Cheapest return flight

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sun 8/11

19:10-09:25

3 stops51h 15m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$755

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 7/11

07:50-20:20

3 stops49h 30m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$768

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Thu 17/9

20:40-14:15

2 stops56h 35m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$814

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Fri 6/11

18:00-13:35

3 stops56h 35m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$817
Fastest return journey

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Wed 4/11

12:35-09:25

2 stops33h 50m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$834

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Mon 2/11

13:30-12:10

3 stops35h 40m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$877

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 30/1

20:10-06:30

3 stops47h 20m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,107

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 7/11

20:00-06:55

2 stops47h 55m

Sydney Kingsford Smith

Sat 21/11

16:20-19:15

2 stops37h 55m

$1,662

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Wed 11/11

08:45-06:50

2 stops35h 05m

Sydney Kingsford Smith

Sun 15/11

15:50-21:15

2 stops40h 25m

$2,070

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Mon 21/12

08:45-06:50

2 stops35h 05m

Sydney Kingsford Smith

Sun 17/1

22:10-08:10

2 stops45h 00m

$2,158

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Showing 1-10 of 16 resultsSorted by cheapest first
1
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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.
Estimated return price

Related info for your journey

  • How long is the flight from Porto to Sydney?

    Departing from Porto to Sydney will take you 35h 05m. Porto and Sydney are separated by a distance of 18057 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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
Terrigal
Leura
Randwick
Bondi Beach
Coogee

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Porto to Sydney

Lisbon to Sydney flights

Fly with Cheapflights

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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