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Cheap flights from Portugal to Sydney from $723

LIS — SYD
27 Nov — 4 Dec1
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

Tue 10/1120:15 -
2 stops54h 20m
Sat 14/1121:30 -
1 stop44h 25m
Deal found 25/10$1,540
Mon 7/1205:00 -
3 stops40h 05m
Mon 14/1210:30 -
3 stops39h 30m
Deal found 23/10$1,659
Fri 25/1209:40 -
2 stops35h 25m
Wed 20/110:30 -
2 stops35h 15m
Deal found 23/10$1,720
Tue 8/1207:00 -
2 stops38h 35m
Tue 15/1210:30 -
2 stops42h 20m
Deal found 24/10$1,789
Sun 1/1123:30 -
2 stops49h 40m
Tue 17/1121:30 -
1 stop44h 25m
Deal found 27/10$1,873
Wed 4/1117:05 -
2 stops38h 45m
Wed 11/1116:50 -
1 stop25h 05m
Deal found 24/10$1,902
Thu 19/1106:05 -
3 stops44h 30m
Mon 23/1112:00 -
3 stops46h 50m
Deal found 24/10$1,907
Thu 31/1206:05 -
2 stops37h 25m
Sun 10/121:30 -
2 stops47h 50m
Deal found 25/10$2,112
Mon 9/1114:15 -
2 stops29h 15m
Sat 28/1106:00 -
3 stops45h 35m
Deal found 23/10$2,113
Thu 10/1211:35 -
2 stops33h 30m
Fri 25/1221:30 -
2 stops32h 15m
Deal found 26/10$2,123
Sat 12/1211:25 -
2 stops32h 05m
Mon 28/1216:50 -
2 stops29h 00m
Deal found 23/10$2,139
Wed 30/1206:05 -
2 stops37h 25m
Sun 10/121:30 -
2 stops47h 50m
Deal found 25/10$2,143

Find flight deals from Portugal to Sydney

Round-trip from

$1,540

One-way from

$723

Popular in

April

Cheapest in

February

Average price

$2,372
Etihad Airways
  • Etihad Airways
  • 10/11-14/11
  • 3 total stops
  • 98h 45m total
  • Portugal to Sydney
Search Deals
1/12-31/12
  • 1/12-31/12
  • 2 total stops
  • 50h 45m total
  • Portugal to Sydney
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($168 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($82 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Thu 26/11

22:00-15:05

3 stops54h 05m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$747

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Sun 22/11

20:35-10:00

2 stops50h 25m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$761

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Wed 9/12

19:35-18:50

3 stops36h 15m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$822

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Mon 23/11

22:25-08:35

2 stops47h 10m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$847

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sat 31/10

22:00-18:50

3 stops57h 50m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,063

PortoSydney

OPO Porto - SYD Sydney Kingsford Smith

OPOSYD

Porto

Tue 29/12

18:00-13:40

3 stops56h 40m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,104

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sun 1/11

23:30-18:50

2 stops32h 20m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,135

FaroSydney

FAO Faro - SYD Sydney Kingsford Smith

FAOSYD

Faro

Sun 17/1

12:40-06:50

3 stops55h 10m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,201

FaroSydney

FAO Faro - SYD Sydney Kingsford Smith

FAOSYD

Faro

Mon 18/1

14:30-06:50

2 stops29h 20m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,222

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Fri 25/12

08:40-13:35

2 stops41h 55m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,288

Flights are sorted by cheapest return flights first.

Deals found on 23/10

Showing 1-10 of 51 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, February is the cheapest month in which you can book a flight from Portugal to Sydney (average of $2,221). Flying from Portugal to Sydney in April is currently the most expensive (average of $3,149). 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 15 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
1,550 reviews
Check prices

Crew

7.8

Overall

7.3

Boarding

7.6

Comfort

7.3

Entertainment

7.2

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Humera,Oct 2026

KHI - AUH

Not sure why, but somehow, my daughter’s ticket was bought such that it did not allow any checked baggage’s. This is quite ironic because this is an international flight is not going from Sister city to another Sister city it is going from one continent to a very different continent. How is it assumed that a person will not have any luggage.? I never even knew that international flights could have such a policy where there are tickets that would not have checked luggage included seriously?! At the counter when we learned this the amount of money they were asking for to check the bags was $260 each bag. For two bags that’s slightly more than what I paid for the return ticket. They could have charged $100 or $125 for each bag just like when the bag is over weight. This is extremely ridiculous., very disappointed, especially when the crew at the airport was not even cooperative in coming up with some solution. My daughter had told myself flight and is now flying back via Qatar Airways. Extremely disappointed with Etihad airways.
Etihad Airways
7.3
Good
1,550 reviews
Etihad Airways
7.3
Good
1,550 reviews
Check prices

Crew

7.8

Overall

7.3

Boarding

7.6

Comfort

7.3

Entertainment

7.2

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Humera,Oct 2026

KHI - AUH

Not sure why, but somehow, my daughter’s ticket was bought such that it did not allow any checked baggage’s. This is quite ironic because this is an international flight is not going from Sister city to another Sister city it is going from one continent to a very different continent. How is it assumed that a person will not have any luggage.? I never even knew that international flights could have such a policy where there are tickets that would not have checked luggage included seriously?! At the counter when we learned this the amount of money they were asking for to check the bags was $260 each bag. For two bags that’s slightly more than what I paid for the return ticket. They could have charged $100 or $125 for each bag just like when the bag is over weight. This is extremely ridiculous., very disappointed, especially when the crew at the airport was not even cooperative in coming up with some solution. My daughter had told myself flight and is now flying back via Qatar Airways. Extremely disappointed with Etihad airways.

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 30h 15m. There are 18087 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, February is the cheapest month in which you can book a flight from Portugal to Sydney (average of $2,221). Flying from Portugal to Sydney in April is currently the most expensive (average of $3,149). 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
Cronulla
Lithgow
Terrigal
Katoomba
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$2,141Average$2,590FlexibilityNo 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?

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