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Cheap flights from Porto to Sydney from $1,316

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
13 Aug — 20 Aug1
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 14 July 2026.

Thu 27/813:45
OPO
-
SYD
2 stops40h 05m
Multiple Airlines
Thu 3/919:40
SYD
-
OPO
2 stops34h 40m
Multiple Airlines
Deal found 13/7$1,622
Sun 23/805:05
OPO
-
SYD
3 stops48h 45m
Multiple Airlines
Sun 30/819:40
SYD
-
OPO
3 stops47h 20m
Multiple Airlines
Deal found 9/7$1,748
Thu 17/922:20
OPO
-
SYD
2 stops53h 15m
Multiple Airlines
Fri 2/1021:05
SYD
-
OPO
2 stops27h 35m
Multiple Airlines
Deal found 13/7$1,884
Sun 13/905:55
OPO
-
SYD
2 stops47h 20m
Multiple Airlines
Thu 1/1021:05
SYD
-
OPO
2 stops27h 40m
Multiple Airlines
Deal found 13/7$1,932
Wed 11/1112:40
OPO
-
SYD
2 stops34h 20m
Multiple Airlines
Wed 18/1113:25
SYD
-
OPO
2 stops42h 55m
Multiple Airlines
Deal found 13/7$1,948
Thu 3/922:20
OPO
-
SYD
2 stops53h 15m
Multiple Airlines
Thu 17/921:05
SYD
-
OPO
2 stops27h 40m
Multiple Airlines
Deal found 13/7$1,971
Fri 18/906:35
OPO
-
SYD
2 stops46h 40m
Multiple Airlines
Fri 2/1021:05
SYD
-
OPO
2 stops27h 35m
Multiple Airlines
Deal found 13/7$1,978
Wed 16/919:40
OPO
-
SYD
2 stops38h 40m
Multiple Airlines
Wed 30/921:05
SYD
-
OPO
2 stops27h 35m
Multiple Airlines
Deal found 13/7$1,987
Wed 16/919:40
OPO
-
SYD
2 stops38h 40m
Multiple Airlines
Tue 29/921:05
SYD
-
OPO
2 stops27h 35m
Multiple Airlines
Deal found 13/7$1,988
Fri 4/906:35
OPO
-
SYD
2 stops46h 40m
Multiple Airlines
Thu 17/921:05
SYD
-
OPO
2 stops27h 40m
Multiple Airlines
Deal found 12/7$1,998

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 14 July 2026.

Round-trip from

$1,622

One-way from

$1,316

Popular in

July

Cheapest in

June

Average price

$2,996
27/8-3/9
  • 27/8-3/9
  • 4 total stops
  • 74h 45m total
  • Porto to Sydney
Search Deals
Qatar Airways
  • Qatar Airways
  • 1/9
  • 2 total stops
  • 47h 30m total
  • Porto to Sydney
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($123 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($85 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 14 July 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

Sun 23/8

05:05-14:50

3 stops48h 45m

Sydney Kingsford Smith

Sun 30/8

19:40-10:00

3 stops47h 20m

$1,748

PortoSydney

OPO - SYD

OPOSYD

Porto

Sun 6/9

21:45-12:35

2 stops53h 50m

Sydney Kingsford Smith

Sun 20/9

21:05-15:50

2 stops27h 45m

$2,186

PortoSydney

OPO - SYD

OPOSYD

Porto

Sun 23/8

19:50-16:50

2 stops36h 00m

Sydney Kingsford Smith

Sun 6/9

19:40-22:30

2 stops35h 50m

$2,200

PortoSydney

OPO - SYD

OPOSYD

Porto

Fri 4/9

05:00-19:25

2 stops29h 25m

Sydney Kingsford Smith

Thu 17/9

07:35-15:45

3 stops41h 10m

$2,227

PortoSydney

OPO - SYD

OPOSYD

Porto

Sun 6/9

21:30-06:05

2 stops47h 35m

Sydney Kingsford Smith

Sun 20/9

14:35-20:35

2 stops39h 00m

$2,571

PortoSydney

OPO - SYD

OPOSYD

Porto

Fri 4/9

21:25-06:05

2 stops47h 40m

Sydney Kingsford Smith

Thu 17/9

14:35-20:30

2 stops38h 55m

$2,571

PortoSydney

OPO - SYD

OPOSYD

Porto

Thu 3/9

19:55-06:05

2 stops49h 10m

Sydney Kingsford Smith

Thu 17/9

14:35-20:30

2 stops38h 55m

$2,575
Fastest return journey

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 21/12

08:20-06:50

2 stops35h 30m

Sydney Kingsford Smith

Sun 17/1

15:50-13:55

2 stops33h 05m

$2,577
Cheapest one-way

PortoSydney

OPO - SYD

OPOSYD

Porto

Tue 1/9

22:00-06:30

2 stops47h 30m

$1,316

PortoSydney

OPO - SYD

OPOSYD

Porto

Tue 1/9

20:10-06:10

2 stops49h 00m

$1,486

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 13 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.

  • 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.

Travelling to a place near Sydney?

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

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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

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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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