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Cheap flights from Portugal to Sydney from $723

LIS — SYD
26 Sep — 3 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 13/909:40 -
2 stops48h 45m
Tue 29/920:50 -
1 stop43h 35m
Deal found 25/8$1,561
Mon 7/923:00 -
2 stops48h 25m
Thu 1/1020:50 -
1 stop43h 30m
Deal found 25/8$1,582
Tue 22/907:00 -
3 stops40h 50m
Tue 29/920:50 -
1 stop43h 35m
Deal found 25/8$1,584
Tue 8/914:00 -
2 stops33h 25m
Tue 29/915:40 -
2 stops28h 55m
Deal found 26/8$1,651
Tue 8/907:00 -
3 stops38h 15m
Tue 29/920:50 -
1 stop43h 35m
Deal found 26/8$1,668
Tue 22/908:35 -
3 stops39h 15m
Tue 29/915:40 -
2 stops35h 55m
Deal found 25/8$1,680
Sun 18/1022:00 -
2 stops55h 15m
Tue 17/1121:30 -
1 stop44h 25m
Deal found 23/8$1,690
Thu 22/1007:00 -
3 stops37h 55m
Mon 9/1121:30 -
2 stops34h 45m
Deal found 23/8$1,754
Fri 18/906:35 -
3 stops40h 45m
Thu 1/1020:50 -
2 stops34h 15m
Deal found 24/8$1,803
Thu 15/1016:00 -
3 stops37h 50m
Thu 5/1110:40 -
3 stops37h 50m
Deal found 23/8$1,815
Thu 15/1016:05 -
3 stops42h 15m
Wed 4/1116:50 -
2 stops35h 50m
Deal found 25/8$1,828
Sat 19/913:55 -
2 stops34h 05m
Sat 3/1020:50 -
2 stops32h 25m
Deal found 23/8$1,970

Find flight deals from Portugal to Sydney

Round-trip from

$1,561

One-way from

$723

Popular in

April

Cheapest in

March

Average price

$2,553
Etihad Airways
  • Etihad Airways
  • 13/9-29/9
  • 3 total stops
  • 92h 20m total
  • Portugal to Sydney
Search Deals
20/11
  • 20/11
  • 2 total stops
  • 50h 10m total
  • Portugal to Sydney
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($143 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($81 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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

16:05-12:35

3 stops35h 30m

Sydney Kingsford Smith

Sat 3/10

20:50-23:40

2 stops35h 50m

$1,973

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sat 31/10

18:45-06:55

2 stops49h 10m

Sydney Kingsford Smith

Sat 20/2

11:00-09:50

3 stops33h 50m

$2,141

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sun 13/9

09:40-08:50

3 stops38h 10m

Sydney Kingsford Smith

Thu 17/9

11:00-13:20

3 stops35h 20m

$2,155

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Thu 5/11

05:00-17:45

2 stops25h 45m

Sydney Kingsford Smith

Mon 23/11

21:30-06:45

2 stops44h 15m

$2,205

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

$2,260

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Wed 4/11

11:55-07:00

2 stops56h 05m

Sydney Kingsford Smith

Sun 8/11

11:20-08:10

2 stops55h 50m

$2,369

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sat 31/10

12:20-09:20

2 stops34h 00m

Sydney Kingsford Smith

Sat 20/2

09:20-10:20

2 stops36h 00m

$2,373
Fastest return journey

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Thu 8/10

07:00-06:55

3 stops37h 55m

Sydney Kingsford Smith

Thu 15/10

22:05-15:45

2 stops27h 40m

$2,434

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

$2,558

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sat 12/9

20:10-06:10

2 stops49h 00m

Sydney Kingsford Smith

Mon 28/9

20:50-06:50

2 stops43h 00m

$2,561

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 30 resultsSorted by cheapest first
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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 $1,954). Flying from Portugal to Sydney in April is currently the most expensive (average of $3,078). 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
1,520 reviews
Check prices

Food

7.1

Boarding

7.6

Overall

7.3

Crew

7.8

Comfort

7.3

Entertainment

7.2

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
1,520 reviews
Etihad Airways
7.3
Good
1,520 reviews
Check prices

Food

7.1

Boarding

7.6

Overall

7.3

Crew

7.8

Comfort

7.3

Entertainment

7.2

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 47h 10m. There are 18057 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 $1,954). Flying from Portugal to Sydney in April is currently the most expensive (average of $3,078). 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
Randwick
Leura
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$2,093Average$2,472FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights

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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.

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