Find flights
When to book
Airlines
FAQs

Cheap flights from Sydney to Porto from $975

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — OPO
10 Jun — 17 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to Porto

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Porto
Explore the most affordable flight options available from Sydney to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 May 2026.

Sun 14/611:40
SYD
-
OPO
2 stops31h 00m
Turkish Airlines
Mon 22/610:40
OPO
-
SYD
2 stops38h 00m
Turkish Airlines
Deal found 6/5$1,671
Tue 26/509:50
SYD
-
OPO
2 stops32h 55m
Multiple Airlines
Thu 11/616:40
OPO
-
SYD
2 stops28h 45m
Multiple Airlines
Deal found 10/5$1,711
Tue 26/509:50
SYD
-
OPO
2 stops38h 50m
Multiple Airlines
Fri 12/610:40
OPO
-
SYD
2 stops33h 30m
Multiple Airlines
Deal found 10/5$1,724
Thu 23/711:40
SYD
-
OPO
2 stops37h 05m
Multiple Airlines
Thu 27/811:00
OPO
-
SYD
2 stops38h 20m
Multiple Airlines
Deal found 11/5$1,770
Thu 4/622:10
SYD
-
OPO
2 stops34h 20m
Multiple Airlines
Sun 14/616:40
OPO
-
SYD
2 stops28h 45m
Multiple Airlines
Deal found 11/5$1,796

Find flight deals from Sydney to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 May 2026.

Round-trip from

$1,671

One-way from

$975

Popular in

December

Cheapest in

January

Average price

$1,850
Turkish Airlines
  • Turkish Airlines
  • 14/6-22/6
  • 4 total stops
  • 69h 00m total
  • Sydney to Porto
Search Deals
Turkish Airlines
  • Turkish Airlines
  • 8/10
  • 2 total stops
  • 37h 05m total
  • Sydney to Porto
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($298 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($124 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sydney to Porto 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 11 May 2026.
Use the filters below to find and compare flights from Sydney to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Tue 26/5

09:50-09:45

2 stops32h 55m

Porto

Thu 11/6

16:40-06:05

3 stops52h 25m

$1,785

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Tue 26/5

14:35-10:00

2 stops52h 25m

Porto

Sun 14/6

16:40-06:25

2 stops28h 45m

$1,831
Fastest return journey

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Mon 7/9

10:20-09:40

2 stops32h 20m

Porto

Sun 13/9

10:45-05:10

2 stops33h 25m

$1,862

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Fri 24/7

10:20-15:40

2 stops38h 20m

Porto

Thu 27/8

06:10-05:10

2 stops38h 00m

$1,938

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Fri 24/7

07:25-15:40

3 stops41h 15m

Porto

Fri 11/9

10:40-10:20

2 stops38h 40m

$2,011

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sun 14/6

11:40-09:40

2 stops31h 00m

Porto

Mon 22/6

06:30-06:05

3 stops38h 35m

$2,119
Cheapest one-way

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sat 16/5

15:40-06:50

2 stops48h 10m

$1,029
Fastest single journey

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Wed 7/10

16:40-15:15

2 stops32h 35m

$1,039

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sat 3/10

21:30-06:50

2 stops42h 20m

$1,039

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Tue 6/10

16:40-18:35

3 stops35h 55m

$1,099

Flights are sorted by cheapest return flights first.

Deals found on 9/5

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

Best time to book a flight from Sydney to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Sydney 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 Sydney to Porto

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

The price you pay for your flight from Sydney to Porto may vary depending on when you book. For the best chance of a lower fare, look to book 27 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

How much does it cost for a return flight from Sydney to Porto?

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated 11 May 2026.
Get a feel of what it's like to fly with KLM,Qatar Airways, andTurkish Airlines from Sydney to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,513 reviews
Check prices

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,513 reviews
KLM
7.8
Good
1,513 reviews
Check prices

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Qatar Airways
7.4
Good
3,728 reviews
KLM
7.8
Good
1,513 reviews
Check prices

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Turkish Airlines
7.4
Good
4,356 reviews
KLM
7.8
Good
1,513 reviews
Check prices

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Etihad Airways
7.3
Good
1,435 reviews
KLM
7.8
Good
1,513 reviews
Check prices

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Lufthansa
6.8
Okay
7,986 reviews
KLM
7.8
Good
1,513 reviews
Check prices

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

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

  • What are the cheapest airlines flying from Sydney to Porto round-trip?

    Our cheapest airline available from Sydney to Porto is Japan Airlines. Our recent data shows that you can find tickets from as low as $1,165 on this airline. Additional options worth looking into are Etihad Airways and Turkish Airlines, starting at $1,323 and $1,595 round-trip. You may be able to fly from Sydney to Porto for 38% less than the average price by searching for these airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sydney to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Viseu

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Sydney to Porto on these airlines

Choose from the following airlines for your flight from Sydney to Porto. Flights are based on user searches made on Cheapflights and were last updated on 11 May 2026.
KLM flights from Sydney Kingsford Smith to Porto
Air France flights from Sydney Kingsford Smith to Porto

Top 8 airlines flying from Sydney to Porto

Discover the top 8 airlines that operate flights from Sydney to Porto. 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 11 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$1,165Average$1,575FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Etihad AirwaysCheapest$1,323Average$1,769FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Turkish AirlinesCheapest$1,595Average$1,876FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
LufthansaCheapest$1,613Average$1,998FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest$1,850Average$2,256FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qatar AirwaysCheapest$2,080Average$2,310FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Air FranceCheapest$2,271Average$2,556FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest$2,323Average$2,783FlexibilityNo cancel feeOn-time75%
Search KLM 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 Sydney to Porto?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Porto from Sydney today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Sydney to Porto for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to Porto from Sydney shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for Sydney to Porto flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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.