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Cheap flights from Porto to Sydney from $1,179

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 26/12. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — SYD
2 Oca — 9 Oca1
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 3 Aralık 2025.

Cum 5/1216:10OPO - SYD
2 stops40h 10mTurkish Airlines
Pzt 22/1221:15SYD - OPO
2 stops28h 55mTurkish Airlines
Deal found 30/11$2,813
Cmt 20/1208:20OPO - SYD
2 stops59h 30mMultiple Airlines
Pzt 5/121:40SYD - OPO
2 stops45h 00mMultiple Airlines
Deal found 2/12$3,943
Per 18/1220:40OPO - SYD
2 stops35h 10mMultiple Airlines
Pzt 5/115:50SYD - OPO
2 stops35h 10mMultiple Airlines
Deal found 30/11$4,387
Per 18/1220:40OPO - SYD
2 stops35h 10mIberia
Pzt 5/121:40SYD - OPO
2 stops45h 00mIberia
Deal found 2/12$4,414
Cum 5/1219:20OPO - SYD
3 stops51h 15mMultiple Airlines
Pzt 22/1211:20SYD - OPO
3 stops36h 45mMultiple Airlines
Deal found 1/12$6,185
Per 18/1211:20OPO - SYD
2 stops33h 05mKLM
Pzt 5/106:35SYD - OPO
3 stops43h 50mKLM
Deal found 1/12$7,169

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 3 Aralık 2025.

Round-trip from

$2,125

One-way from

$1,179

Popular in

April

Cheapest in

January

Average price

$2,398
26/1-8/2
  • 26/1-8/2
  • 4 total stops
  • 66h 00m total
  • Porto to Sydney
Search Deals
26/12
  • 26/12
  • 3 total stops
  • 56h 15m total
  • Porto to Sydney
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($163 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($84 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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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 3 Aralık 2025.
Use the filters below to find and compare flights from Porto to Sydney that are best for you.

Fly from

Porto

Fly to

Sydney

Route

Depart

Return

Price

PortoSydney

OPO - SYD

OPOSYD

Porto

Paz 18/1

18:20-13:35

2 stops56h 15m

Sydney Kingsford Smith

Cmt 31/1

21:30-23:45

2 stops37h 15m

$2,039

PortoSydney

OPO - SYD

OPOSYD

Porto

Pzt 26/1

12:35-06:30

2 stops30h 55m

Sydney Kingsford Smith

Paz 8/2

12:00-12:05

2 stops35h 05m

$2,125

PortoSydney

OPO - SYD

OPOSYD

Porto

Pzt 4/5

12:20-09:00

2 stops35h 40m

Sydney Kingsford Smith

Paz 17/5

13:00-21:20

3 stops41h 20m

$2,186

PortoSydney

OPO - SYD

OPOSYD

Porto

Pzt 19/1

14:45-09:15

3 stops31h 30m

Sydney Kingsford Smith

Çar 4/2

12:00-09:50

2 stops32h 50m

$2,204

PortoSydney

OPO - SYD

OPOSYD

Porto

Per 5/3

16:55-07:35

2 stops27h 40m

Sydney Kingsford Smith

Pzt 9/3

10:20-16:40

2 stops41h 20m

$2,229

PortoSydney

OPO - SYD

OPOSYD

Porto

Per 5/3

12:35-09:05

2 stops33h 30m

Sydney Kingsford Smith

Pzt 9/3

10:20-09:30

2 stops34h 10m

$2,238

PortoSydney

OPO - SYD

OPOSYD

Porto

Per 15/1

06:35-06:45

3 stops37h 10m

Sydney Kingsford Smith

Per 22/1

12:00-10:15

2 stops33h 15m

$2,282

PortoSydney

OPO - SYD

OPOSYD

Porto

Cum 26/12

20:05-15:20

3 stops56h 15m

$1,179

PortoSydney

OPO - SYD

OPOSYD

Porto

Sal 3/2

21:05-18:35

2 stops34h 30m

$1,200

PortoSydney

OPO - SYD

OPOSYD

Porto

Per 15/1

09:00-06:45

3 stops58h 45m

$1,319

Flights are sorted by cheapest return flights first.

Deals found on 30/11

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

What is the cheapest month to book a flight from Porto to Sydney?

Currently, December is the cheapest month in which you can book a flight from Porto to Sydney (average of $1,864). Flying from Porto to Sydney in April is currently the most expensive (average of $2,886). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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.

  • What is the cheapest month to book a flight from Porto to Sydney?

    Currently, December is the cheapest month in which you can book a flight from Porto to Sydney (average of $1,864). Flying from Porto to Sydney in April is currently the most expensive (average of $2,886). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Penrith
Terrigal
Manly
Randwick
Lithgow
Coogee
Leura
Bondi Beach
Cronulla

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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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