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Cheap flights from Portugal to Sydney from $699

LIS — SYD
7 Oct — 14 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

Tue 10/1111:30 -
3 stops34h 55m
Tue 24/1121:35 -
2 stops48h 00m
Deal found 7/9$1,541
Sun 22/1118:50 -
2 stops50h 05m
Fri 4/1216:20 -
2 stops36h 35m
Deal found 3/9$1,572
Wed 4/1118:30 -
2 stops38h 50m
Thu 12/1121:30 -
1 stop44h 25m
Deal found 4/9$1,577
Thu 22/1006:40 -
2 stops27h 45m
Thu 29/1015:15 -
2 stops32h 55m
Deal found 7/9$1,619
Thu 22/1006:40 -
2 stops27h 45m
Thu 29/1015:15 -
2 stops33h 15m
Deal found 7/9$1,620
Mon 2/1106:40 -
2 stops50h 40m
Mon 16/1121:30 -
1 stop44h 25m
Deal found 7/9$1,622
Tue 27/1020:40 -
2 stops53h 55m
Sat 14/1121:30 -
1 stop44h 25m
Deal found 6/9$1,631
Thu 29/1006:00 -
2 stops27h 20m
Thu 12/1121:30 -
2 stops33h 10m
Deal found 4/9$1,680
Wed 21/1009:10 -
3 stops38h 10m
Wed 28/1016:50 -
1 stop25h 05m
Deal found 6/9$1,703
Tue 20/1016:05 -
2 stops37h 45m
Tue 27/1010:30 -
2 stops43h 50m
Deal found 5/9$1,727
Sun 25/1010:15 -
2 stops33h 40m
Sat 7/1116:20 -
2 stops37h 55m
Deal found 4/9$1,788
Mon 26/1015:25 -
2 stops35h 10m
Mon 9/1120:45 -
2 stops33h 15m
Deal found 4/9$1,904

Find flight deals from Portugal to Sydney

Round-trip from

$1,383

One-way from

$699

Popular in

April

Cheapest in

June

Average price

$2,359
British Airways
  • British Airways
  • 8/2-22/2
  • 5 total stops
  • 62h 05m total
  • Portugal to Sydney
Search Deals
10/11-31/12
  • 10/11-31/12
  • 2 total stops
  • 53h 55m total
  • Portugal to Sydney
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($212 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($77 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

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Tue 10/11

20:40-13:35

2 stops53h 55m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$699

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Thu 17/9

22:40-14:15

2 stops54h 35m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$701

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Tue 27/10

16:30-13:35

3 stops58h 05m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$772

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sun 20/9

22:30-14:15

3 stops54h 45m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$841

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Wed 30/9

20:20-14:50

2 stops57h 30m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,019

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Mon 19/10

06:40-13:35

2 stops44h 55m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,056

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Sat 3/10

20:35-20:20

3 stops37h 45m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,227

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Mon 8/2

15:45-12:25

3 stops33h 40m

Sydney Kingsford Smith

Mon 22/2

16:20-09:45

2 stops28h 25m

$1,386
Fastest return journey

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Thu 10/12

08:15-17:45

1 stop22h 30m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,397

LisbonSydney

LIS Lisbon Humberto Delgado - SYD Sydney Kingsford Smith

LISSYD

Lisbon Humberto Delgado

Tue 8/12

12:55-07:55

2 stops32h 00m

Sydney Kingsford Smith

Tue 15/12

21:10-21:50

2 stops35h 40m

$2,181

Flights are sorted by cheapest return flights first.

Deals found on 5/9

Showing 1-10 of 21 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, March is the cheapest month in which you can book a flight from Portugal to Sydney (average of $2,145). Flying from Portugal to Sydney in April is currently the most expensive (average of $3,067). 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
1,533 reviews
Check prices

Boarding

7.6

Overall

7.3

Comfort

7.3

Crew

7.8

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
1,533 reviews
Etihad Airways
7.3
Good
1,533 reviews
Check prices

Boarding

7.6

Overall

7.3

Comfort

7.3

Crew

7.8

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, March is the cheapest month in which you can book a flight from Portugal to Sydney (average of $2,145). Flying from Portugal to Sydney in April is currently the most expensive (average of $3,067). 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$2,085Average$2,313FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights

Fly with Cheapflights

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

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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!

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