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Cheap flights from Porto to Sydney from $1,315

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — SYD
5 Jul — 12 Jul1
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 5 June 2026.

Mon 29/616:05
OPO
-
SYD
2 stops29h 05m
Multiple Airlines
Mon 13/710:20
SYD
-
OPO
2 stops32h 20m
Multiple Airlines
Deal found 1/6$1,998
Mon 22/605:05
OPO
-
SYD
2 stops40h 05m
Multiple Airlines
Mon 6/709:50
SYD
-
OPO
2 stops56h 55m
Multiple Airlines
Deal found 4/6$2,012
Sun 21/606:00
OPO
-
SYD
2 stops25h 50m
Multiple Airlines
Mon 6/714:00
SYD
-
OPO
2 stops28h 40m
Multiple Airlines
Deal found 2/6$2,024
Thu 12/1108:20
OPO
-
SYD
2 stops35h 30m
Qatar Airways
Mon 16/1115:50
SYD
-
OPO
2 stops35h 10m
Qatar Airways
Deal found 1/6$2,227
Sun 18/1021:30
OPO
-
SYD
2 stops47h 35m
British Airways
Thu 5/1116:20
SYD
-
OPO
2 stops35h 55m
British Airways
Deal found 5/6$2,276
Mon 15/610:40
OPO
-
SYD
2 stops47h 30m
Turkish Airlines
Tue 30/621:05
SYD
-
OPO
2 stops45h 55m
Turkish Airlines
Deal found 4/6$2,277
Sat 20/620:40
OPO
-
SYD
2 stops48h 30m
Qatar Airways
Mon 6/714:50
SYD
-
OPO
2 stops49h 50m
Qatar Airways
Deal found 4/6$2,283
Thu 18/616:05
OPO
-
SYD
2 stops29h 05m
Multiple Airlines
Mon 22/614:50
SYD
-
OPO
2 stops33h 25m
Multiple Airlines
Deal found 2/6$2,311
Thu 4/611:50
OPO
-
SYD
3 stops34h 30m
Air Canada
Tue 9/609:20
SYD
-
OPO
3 stops54h 40m
Air Canada
Deal found 2/6$2,402

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 5 June 2026.

Round-trip from

$1,998

One-way from

$1,315

Popular in

December

Cheapest in

September

Average price

$2,447
29/6-13/7
  • 29/6-13/7
  • 4 total stops
  • 61h 25m total
  • Porto to Sydney
Search Deals
1/9
  • 1/9
  • 2 total stops
  • 29h 05m total
  • Porto to Sydney
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($125 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($36 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 5 June 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 - SYD

OPOSYD

Porto

Thu 12/11

16:40-06:50

2 stops27h 10m

Sydney Kingsford Smith

Mon 16/11

15:50-16:00

2 stops35h 10m

$2,231

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 29/6

16:05-06:10

2 stops29h 05m

Sydney Kingsford Smith

Mon 13/7

07:05-09:40

3 stops35h 35m

$2,273

PortoSydney

OPO - SYD

OPOSYD

Porto

Sun 18/10

21:30-07:05

2 stops47h 35m

Sydney Kingsford Smith

Thu 5/11

16:20-17:15

2 stops35h 55m

$2,276

PortoSydney

OPO - SYD

OPOSYD

Porto

Sun 18/10

08:20-07:10

2 stops36h 50m

Sydney Kingsford Smith

Thu 5/11

07:15-15:25

3 stops43h 10m

$2,482

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 15/6

22:00-17:10

2 stops34h 10m

Sydney Kingsford Smith

Thu 25/6

14:50-16:10

2 stops34h 20m

$2,558

PortoSydney

OPO - SYD

OPOSYD

Porto

Fri 19/6

10:40-19:10

2 stops47h 30m

Sydney Kingsford Smith

Tue 23/6

07:20-09:45

3 stops35h 25m

$2,576

PortoSydney

OPO - SYD

OPOSYD

Porto

Wed 29/7

16:40-06:10

2 stops28h 30m

Sydney Kingsford Smith

Sat 22/8

21:30-06:50

2 stops42h 20m

$2,663

PortoSydney

OPO - SYD

OPOSYD

Porto

Sun 21/6

08:35-06:10

2 stops36h 35m

Sydney Kingsford Smith

Mon 6/7

20:45-07:40

2 stops43h 55m

$2,673

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 20/7

20:40-06:10

2 stops48h 30m

Sydney Kingsford Smith

Mon 27/7

07:20-15:50

3 stops41h 30m

$2,681

PortoSydney

OPO - SYD

OPOSYD

Porto

Sun 19/7

12:15-07:20

3 stops58h 05m

Sydney Kingsford Smith

Sun 26/7

07:25-09:40

3 stops59h 15m

$2,932

Flights are sorted by cheapest return flights first.

Deals found on 3/6

Showing 1-10 of 15 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.

Cheapflights Insights

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

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 35h 30m. 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
Katoomba
Cronulla
Manly
Terrigal
Lithgow
Randwick
Bondi Beach
Leura
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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