Find flights
When to book
FAQs

Cheap flights from Porto to Sydney from $1,400

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 14/7. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — SYD
11 Jun — 18 Jun1
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 12 May 2026.

Sun 10/505:05
OPO
-
SYD
2 stops26h 45m
Multiple Airlines
Mon 25/514:45
SYD
-
OPO
2 stops57h 55m
Multiple Airlines
Deal found 9/5$1,738
Thu 2/716:05
OPO
-
SYD
2 stops29h 05m
Multiple Airlines
Thu 16/714:45
SYD
-
OPO
2 stops27h 55m
Multiple Airlines
Deal found 10/5$2,107
Wed 3/610:45
OPO
-
SYD
2 stops37h 50m
Turkish Airlines
Sun 14/611:05
SYD
-
OPO
2 stops31h 35m
Turkish Airlines
Deal found 10/5$2,116
Wed 4/1108:20
OPO
-
SYD
2 stops35h 30m
Qatar Airways
Sun 8/1115:50
SYD
-
OPO
2 stops35h 10m
Qatar Airways
Deal found 8/5$2,211
Wed 18/1108:20
OPO
-
SYD
2 stops35h 30m
Qatar Airways
Sun 22/1121:40
SYD
-
OPO
2 stops29h 20m
Qatar Airways
Deal found 7/5$2,221
Wed 3/610:45
OPO
-
SYD
2 stops47h 25m
Multiple Airlines
Sun 14/610:05
SYD
-
OPO
3 stops45h 25m
Multiple Airlines
Deal found 10/5$2,354
Mon 25/521:25
OPO
-
SYD
2 stops47h 40m
British Airways
Sun 7/614:35
SYD
-
OPO
2 stops39h 00m
British Airways
Deal found 8/5$2,359
Sat 20/616:05
OPO
-
SYD
2 stops29h 05m
Multiple Airlines
Sat 27/622:10
SYD
-
OPO
2 stops34h 20m
Multiple Airlines
Deal found 8/5$2,378
Wed 3/607:00
OPO
-
SYD
3 stops39h 20m
Air Canada
Sun 14/609:20
SYD
-
OPO
3 stops41h 55m
Air Canada
Deal found 10/5$2,497
Thu 2/720:40
OPO
-
SYD
2 stops48h 30m
Qatar Airways
Thu 16/714:50
SYD
-
OPO
2 stops29h 55m
Qatar Airways
Deal found 9/5$2,568

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 12 May 2026.

Round-trip from

$2,107

One-way from

$1,400

Popular in

December

Cheapest in

September

Average price

$2,254
2/7-16/7
  • 2/7-16/7
  • 4 total stops
  • 57h 00m total
  • Porto to Sydney
Search Deals
Etihad Airways
  • Etihad Airways
  • 14/7
  • 2 total stops
  • 49h 00m total
  • Porto to Sydney
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($121 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($35 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 12 May 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

Wed 3/6

10:45-09:35

2 stops37h 50m

Sydney Kingsford Smith

Sun 14/6

11:05-09:40

2 stops31h 35m

$2,116
Fastest return journey

PortoSydney

OPO - SYD

OPOSYD

Porto

Thu 2/7

20:40-17:10

2 stops35h 30m

Sydney Kingsford Smith

Thu 16/7

14:45-09:40

2 stops27h 55m

$2,119

PortoSydney

OPO - SYD

OPOSYD

Porto

Wed 4/11

08:20-06:50

2 stops35h 30m

Sydney Kingsford Smith

Sun 8/11

15:50-16:00

2 stops35h 10m

$2,211

PortoSydney

OPO - SYD

OPOSYD

Porto

Wed 3/6

10:45-19:10

2 stops47h 25m

Sydney Kingsford Smith

Sun 14/6

10:05-22:30

3 stops45h 25m

$2,354

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 25/5

21:25-06:05

2 stops47h 40m

Sydney Kingsford Smith

Sun 7/6

14:35-20:35

2 stops39h 00m

$2,359

PortoSydney

OPO - SYD

OPOSYD

Porto

Wed 3/6

07:00-07:20

3 stops39h 20m

Sydney Kingsford Smith

Sun 14/6

09:20-18:15

3 stops41h 55m

$2,497

PortoSydney

OPO - SYD

OPOSYD

Porto

Thu 2/7

20:40-06:10

2 stops48h 30m

Sydney Kingsford Smith

Thu 16/7

14:50-11:45

2 stops29h 55m

$2,568

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 25/5

20:40-17:30

2 stops35h 50m

Sydney Kingsford Smith

Sun 7/6

20:45-08:00

2 stops44h 15m

$2,864

PortoSydney

OPO - SYD

OPOSYD

Porto

Thu 2/7

10:00-07:20

3 stops36h 20m

Sydney Kingsford Smith

Thu 16/7

09:20-07:00

3 stops54h 40m

$2,942
Cheapest one-way

PortoSydney

OPO - SYD

OPOSYD

Porto

Tue 1/9

16:05-16:50

2 stops39h 45m

$1,441

Flights are sorted by cheapest return flights first.

Deals found on 9/5

Showing 1-10 of 12 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
Terrigal
Lithgow
Manly
Cronulla
Bondi Beach
Leura
Randwick
Coogee

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.