Find flights
When to book
Airlines
FAQs

Cheap flights from Portugal to Sydney from $716

LIS — SYD
2 Oct — 9 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portugal to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Portugal to Sydney

Sun 8/1121:40 -
2 stops54h 25m
Mon 16/1116:50 -
1 stop25h 05m
Deal found 30/8$1,557
Mon 9/1111:30 -
2 stops34h 55m
Sat 21/1121:35 -
2 stops48h 00m
Deal found 30/8$1,575
Sun 25/1018:50 -
2 stops51h 45m
Sun 29/1116:20 -
2 stops28h 25m
Deal found 30/8$1,586
Thu 22/1022:00 -
2 stops54h 40m
Thu 12/1121:30 -
1 stop44h 25m
Deal found 1/9$1,610
Sun 13/907:40 -
2 stops50h 45m
Tue 29/920:50 -
1 stop43h 35m
Deal found 28/8$1,614
Sat 19/919:55 -
2 stops49h 10m
Sat 3/1014:35 -
2 stops39h 05m
Deal found 31/8$1,659
Sat 19/919:55 -
2 stops49h 10m
Mon 5/1015:35 -
2 stops38h 30m
Deal found 30/8$1,662
Sun 20/907:40 -
3 stops40h 10m
Sat 3/1020:50 -
1 stop43h 25m
Deal found 30/8$1,669
Thu 22/1022:40 -
2 stops54h 00m
Fri 6/1121:30 -
1 stop44h 25m
Deal found 1/9$1,684
Wed 4/1112:55 -
2 stops31h 00m
Sun 8/1111:15 -
2 stops33h 30m
Deal found 29/8$1,720
Mon 26/1018:35 -
2 stops49h 40m
Fri 4/1216:20 -
2 stops28h 40m
Deal found 30/8$1,723
Wed 9/907:10 -
3 stops40h 10m
Tue 6/1016:40 -
2 stops34h 35m
Deal found 30/8$1,730

Find flight deals from Portugal to Sydney

Round-trip from

$1,389

One-way from

$716

Popular in

April

Cheapest in

June

Average price

$2,379
British Airways
  • British Airways
  • 16/2-23/2
  • 5 total stops
  • 65h 55m total
  • Portugal to Sydney
Search Deals
19/11
  • 19/11
  • 2 total stops
  • 54h 05m total
  • Portugal to Sydney
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($203 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($76 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 19/9

19:55-06:05

2 stops49h 10m

Sydney Kingsford Smith

Sat 3/10

14:35-20:40

2 stops39h 05m

$1,659

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 19/9

19:55-06:05

2 stops49h 10m

Sydney Kingsford Smith

Mon 5/10

15:35-20:05

2 stops38h 30m

$1,662

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sat 31/10

11:05-06:55

2 stops32h 50m

Sydney Kingsford Smith

Sat 20/2

11:00-09:50

3 stops33h 50m

$1,748

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 24/10

16:05-17:45

2 stops39h 40m

Sydney Kingsford Smith

Sat 31/10

21:30-10:50

2 stops48h 20m

$2,208

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sat 12/9

22:55-19:25

3 stops35h 30m

Sydney Kingsford Smith

Wed 16/9

21:45-22:50

3 stops34h 05m

$2,215

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Wed 11/11

20:40-06:50

2 stops47h 10m

Sydney Kingsford Smith

Sun 15/11

15:50-20:00

2 stops39h 10m

$2,257

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sat 12/9

22:30-17:10

1 stop33h 40m

Sydney Kingsford Smith

Wed 16/9

14:50-20:15

1 stop38h 25m

$2,495

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 19/9

09:00-07:00

2 stops37h 00m

Sydney Kingsford Smith

Mon 5/10

10:30-09:45

2 stops57h 15m

$2,518
Fastest return journey

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Wed 4/11

08:15-17:45

1 stop22h 30m

Sydney Kingsford Smith

Sun 8/11

16:50-06:55

1 stop25h 05m

$2,531

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sun 1/11

06:00-06:30

3 stops37h 30m

Sydney Kingsford Smith

Thu 26/11

21:35-23:25

2 stops36h 50m

$2,566

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 25 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Portugal to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Portugal with our price prediction graph.
Estimated return price

Cheapflights Insights

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

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

Currently, June is the cheapest month in which you can book a flight from Portugal to Sydney (average of $1,963). Flying from Portugal to Sydney in April is currently the most expensive (average of $3,093). 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.

How far ahead should I book a flight from Portugal to Sydney?

Booking 16 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portugal to Sydney. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Sydney

Read reviews from past customers who have flown with Etihad Airways from Portugal to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Etihad Airways
7.3
Good
1,529 reviews
Check prices

Boarding

7.6

Crew

7.8

Overall

7.3

Comfort

7.3

Entertainment

7.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,June 2026

AUH - KBL

really liked the excellent customer service, friendly staff, smooth check-in process, and comfortable flight. Everyone was professional and helpful, which made my journey enjoyable and stress-free.
Etihad Airways
7.3
Good
1,529 reviews
Etihad Airways
7.3
Good
1,529 reviews
Check prices

Boarding

7.6

Crew

7.8

Overall

7.3

Comfort

7.3

Entertainment

7.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,June 2026

AUH - KBL

really liked the excellent customer service, friendly staff, smooth check-in process, and comfortable flight. Everyone was professional and helpful, which made my journey enjoyable and stress-free.

Related info for your journey

  • What airport do you fly into for flights to Sydney from Portugal?

    For a flight from Portugal to Sydney, you will be flying into Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre of the city.

  • How long is the flight from Portugal to Sydney?

    Departing from Portugal to Sydney will take you 33h 40m. There are 18163 km between Portugal and Sydney. This flight may include one or multiple stops.

  • Can I find deals for flights from Portugal to Sydney that include hotel bookings?

    Yes. In addition to deals on Portugal to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portugal to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Sydney.

  • Can I find deals for business class flights from Portugal to Sydney?

    Yes. Cheapflights offers flight deals from Portugal 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 Portugal to Sydney?

    Currently, June is the cheapest month in which you can book a flight from Portugal to Sydney (average of $1,963). Flying from Portugal to Sydney in April is currently the most expensive (average of $3,093). 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
Penrith
Manly
Katoomba
Lithgow
Cronulla
Terrigal
Leura
Randwick
Bondi Beach
Coogee

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Portugal to Sydney

AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$2,103Average$2,483FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Portugal to Sydney?

Cheapflights helps you search for flights from Portugal to Sydney via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Portugal to Sydney?

Cheapflights simply makes it quick and affordable to book flights from Portugal to Sydney by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Portugal to Sydney with no change fees?

Yes! Cheapflights helps users easily find flights from Portugal to Sydney with no change fees.

Can Cheapflights notify me if prices for flights from Portugal to Sydney become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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.