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Cheap flights from Portugal to Sydney from $745

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SYD
23 Aug — 30 Aug1
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
Explore the most affordable flight options available from Portugal to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 July 2026.

Mon 7/922:00
OPO
-
SYD
2 stops55h 50m
Multiple Airlines
Tue 22/919:40
SYD
-
OPO
2 stops34h 40m
Multiple Airlines
Deal found 24/7$1,756
Tue 1/920:20
LIS
-
SYD
2 stops55h 15m
Multiple Airlines
Wed 30/921:05
SYD
-
LIS
2 stops27h 30m
Multiple Airlines
Deal found 22/7$1,760
Tue 3/1120:40
LIS
-
SYD
2 stops50h 20m
Multiple Airlines
Fri 13/1121:30
SYD
-
LIS
1 stop44h 25m
Multiple Airlines
Deal found 21/7$1,766
Sat 17/1017:50
LIS
-
SYD
3 stops32h 55m
Multiple Airlines
Mon 16/1121:30
SYD
-
LIS
1 stop44h 25m
Multiple Airlines
Deal found 22/7$1,876
Fri 6/1106:20
LIS
-
SYD
2 stops49h 30m
Multiple Airlines
Fri 13/1121:30
SYD
-
LIS
1 stop44h 25m
Multiple Airlines
Deal found 21/7$1,884
Wed 4/1117:05
LIS
-
SYD
2 stops38h 45m
Multiple Airlines
Wed 11/1116:50
SYD
-
LIS
1 stop25h 05m
Multiple Airlines
Deal found 21/7$1,910
Thu 3/920:40
OPO
-
SYD
2 stops33h 10m
Multiple Airlines
Wed 16/910:05
SYD
-
OPO
2 stops35h 55m
Multiple Airlines
Deal found 23/7$1,953
Wed 30/1217:05
LIS
-
SYD
2 stops38h 45m
Multiple Airlines
Tue 19/121:30
SYD
-
LIS
1 stop44h 25m
Multiple Airlines
Deal found 23/7$1,954
Sat 5/1207:35
OPO
-
SYD
2 stops37h 30m
Multiple Airlines
Fri 1/110:30
SYD
-
OPO
2 stops43h 50m
Multiple Airlines
Deal found 19/7$1,964
Thu 5/1111:35
LIS
-
SYD
2 stops34h 00m
Multiple Airlines
Sat 14/1113:25
SYD
-
LIS
2 stops44h 05m
Multiple Airlines
Deal found 21/7$1,967
Sun 6/905:00
LIS
-
SYD
2 stops29h 25m
Multiple Airlines
Sun 13/909:45
SYD
-
LIS
2 stops43h 15m
Multiple Airlines
Deal found 23/7$1,976
Mon 17/823:00
LIS
-
SYD
2 stops30h 50m
Multiple Airlines
Mon 7/920:50
SYD
-
LIS
2 stops35h 10m
Multiple Airlines
Deal found 23/7$1,977

Find flight deals from Portugal to Sydney

Keep the following information in mind while searching for Portugal to Sydney flight deals. Data was last updated 24 July 2026.

Round-trip from

$1,756

One-way from

$745

Popular in

April

Cheapest in

March

Average price

$2,637
7/9-22/9
  • 7/9-22/9
  • 4 total stops
  • 90h 30m total
  • Portugal to Sydney
Search Deals
15/9
  • 15/9
  • 3 total stops
  • 54h 10m total
  • Portugal to Sydney
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($162 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($87 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portugal 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 24 July 2026.
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 - SYD

OPOSYD

Porto

Sat 5/12

07:35-08:05

2 stops37h 30m

Sydney Kingsford Smith

Fri 1/1

10:30-19:20

2 stops43h 50m

$1,964

PortoSydney

OPO - SYD

OPOSYD

Porto

Sat 5/9

15:30-06:10

3 stops53h 40m

Sydney Kingsford Smith

Fri 18/9

15:40-08:10

3 stops49h 30m

$2,020

PortoSydney

OPO - SYD

OPOSYD

Porto

Fri 4/9

16:05-06:10

2 stops29h 05m

Sydney Kingsford Smith

Thu 17/9

20:50-06:50

2 stops43h 00m

$2,067

PortoSydney

OPO - SYD

OPOSYD

Porto

Sat 5/9

16:05-16:50

2 stops39h 45m

Sydney Kingsford Smith

Fri 18/9

15:40-06:50

2 stops48h 10m

$2,077

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 7/9

05:00-19:25

2 stops29h 25m

Sydney Kingsford Smith

Mon 21/9

20:50-23:40

2 stops35h 50m

$2,108

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 14/9

10:30-06:10

2 stops34h 40m

Sydney Kingsford Smith

Wed 30/9

15:40-13:45

2 stops31h 05m

$2,125

LisbonSydney

LIS - SYD

LISSYD

Lisbon Humberto Delgado

Sun 23/8

16:35-06:45

2 stops29h 10m

Sydney Kingsford Smith

Sun 6/9

10:10-15:50

2 stops38h 40m

$2,199

PortoSydney

OPO - SYD

OPOSYD

Porto

Sat 14/11

20:40-18:50

2 stops35h 10m

Sydney Kingsford Smith

Wed 18/11

15:50-11:45

2 stops30h 55m

$2,309

PortoSydney

OPO - SYD

OPOSYD

Porto

Wed 23/9

11:35-06:10

2 stops33h 35m

Sydney Kingsford Smith

Wed 30/9

15:40-06:50

2 stops48h 10m

$2,312

PortoSydney

OPO - SYD

OPOSYD

Porto

Sun 6/9

16:05-06:10

2 stops29h 05m

Sydney Kingsford Smith

Sun 13/9

07:35-09:40

3 stops59h 05m

$2,312

Flights are sorted by cheapest return flights first.

Deals found on 20/7

Showing 1-10 of 32 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
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 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 $2,010). Flying from Portugal to Sydney in April is currently the most expensive (average of $3,166). 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 14 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

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 24 July 2026.
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
1,486 reviews
Check prices

Comfort

7.3

Crew

7.8

Boarding

7.6

Food

7.2

Overall

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
1,486 reviews
Etihad Airways
7.3
Good
1,486 reviews
Check prices

Comfort

7.3

Crew

7.8

Boarding

7.6

Food

7.2

Overall

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

Find useful and relevant information for your journey from Portugal to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 29h 05m. There are 18057 km between Portugal and Sydney. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Portugal to Sydney one-way?

    One-way options have recently been found by users for as low as $959 on Etihad Airways. Other airlines that offer cheap prices include Qatar Airways from $1,178 and Emirates from $1,808 one-way.

  • 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 $2,010). Flying from Portugal to Sydney in April is currently the most expensive (average of $3,166). 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
Katoomba
Manly
Lithgow
Cronulla
Terrigal
Randwick
Leura
Bondi Beach
Coogee

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Portugal to Sydney

Discover the top airline that operate flights from Portugal to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 24 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$2,153Average$2,543FlexibilityNo cancel feeOn-time75%
Search Etihad Airways 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 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!

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