Cheap flights from Porto to Sydney from £409

OPO — SYD
9 Dec — 16 Dec1
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

Mon 14/1221:55 -
2 stops34h 25m
Wed 30/1221:10 -
2 stops35h 05m
Deal found 6/11£964
Mon 21/1221:55 -
2 stops34h 25m
Sun 17/122:10 -
2 stops45h 00m
Deal found 4/11£978
Wed 18/1120:10 -
2 stops35h 25m
Thu 10/1221:30 -
2 stops44h 15m
Deal found 7/11£1,262
Mon 9/1111:30 -
2 stops32h 05m
Mon 30/1116:10 -
2 stops29h 25m
Deal found 4/11£1,275
Sat 5/1221:55 -
2 stops45h 55m
Sat 19/1221:10 -
2 stops45h 30m
Deal found 6/11£1,335
Wed 18/1116:10 -
3 stops29h 25m
Thu 10/1212:00 -
2 stops33h 35m
Deal found 7/11£1,412

Find flight deals from Porto to Sydney

Round-trip from

£946

One-way from

£409

Popular in

July

Cheapest in

September

Average price

£1,168
Qatar Airways
  • Qatar Airways
  • 3/3-7/3
  • 4 total stops
  • 80h 05m total
  • Porto to Sydney
19/2-31/12
  • 19/2-31/12
  • 3 total stops
  • 36h 10m total
  • Porto to Sydney
Highest demand for flights based on searches. 15% potential increase in price (£177 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£39 potential savings vs. average return price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

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

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Depart

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Price

Cheapest return flight

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sun 17/1

19:35-13:40

2 stops55h 05m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£562

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Tue 12/1

20:45-13:40

3 stops53h 55m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£597

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Fri 22/1

15:05-06:30

3 stops52h 25m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£626

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Wed 20/1

06:25-07:10

3 stops37h 45m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£636
Fastest return journey

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 13/3

16:40-06:50

2 stops27h 10m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£670

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Thu 21/1

15:35-20:25

2 stops41h 50m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£675

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 13/3

12:40-06:30

2 stops30h 50m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£684

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sun 14/2

08:45-06:50

2 stops35h 05m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£731

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Mon 18/1

20:40-18:20

2 stops34h 40m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£788

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 23/1

20:40-18:20

2 stops34h 40m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

£807

Flights are sorted by cheapest return flights first.

Deals found on 4/11

Showing 1-10 of 23 resultsSorted by cheapest first
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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?

    For as low as £1,120, Qatar Airways can have you in Sydney from Porto in 45h 55m. The distance between Porto and Sydney is about 11220 mi.

  • 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
Katoomba
Bondi Beach
Coogee

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Alternative routes for Porto to Sydney

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