Find flights
When to book
Airlines
FAQs

Cheap flights from Sydney to Porto from $978

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 25/8. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — OPO
19 Jul — 26 Jul1
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 19 June 2026.

Tue 14/719:40
SYD
-
OPO
2 stops32h 40m
Multiple Airlines
Sun 13/907:35
OPO
-
SYD
2 stops46h 15m
Multiple Airlines
Deal found 17/6$1,525
Mon 13/720:50
SYD
-
OPO
2 stops43h 00m
Etihad Airways
Sun 13/911:35
OPO
-
SYD
2 stops33h 35m
Etihad Airways
Deal found 14/6$1,699
Tue 14/720:50
SYD
-
OPO
2 stops47h 00m
Etihad Airways
Sun 13/911:35
OPO
-
SYD
2 stops33h 35m
Etihad Airways
Deal found 15/6$1,714
Thu 12/1121:30
SYD
-
OPO
2 stops56h 50m
Etihad Airways
Mon 16/1116:05
OPO
-
SYD
2 stops27h 30m
Etihad Airways
Deal found 13/6$1,730
Sat 25/720:50
SYD
-
OPO
2 stops47h 00m
Etihad Airways
Thu 27/820:10
OPO
-
SYD
2 stops49h 00m
Etihad Airways
Deal found 14/6$1,811

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 19 June 2026.

Round-trip from

$1,525

One-way from

$978

Popular in

December

Cheapest in

February

Average price

$2,468
14/7-13/9
  • 14/7-13/9
  • 4 total stops
  • 78h 55m total
  • Sydney to Porto
Search Deals
Etihad Airways
  • Etihad Airways
  • 25/8
  • 2 total stops
  • 43h 00m total
  • Sydney to Porto
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($334 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($126 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 19 June 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

Sat 25/7

07:35-09:45

3 stops35h 10m

Porto

Thu 27/8

06:10-05:10

2 stops38h 00m

$1,871

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Fri 24/7

07:35-09:45

3 stops35h 10m

Porto

Thu 27/8

06:10-05:10

2 stops38h 00m

$1,871

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Tue 14/7

20:50-15:15

2 stops51h 25m

Porto

Sun 13/9

11:35-06:10

2 stops33h 35m

$1,885

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sun 12/7

22:15-09:40

2 stops44h 25m

Porto

Sun 13/9

10:45-06:45

2 stops35h 00m

$1,941

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Thu 16/7

07:05-09:40

3 stops35h 35m

Porto

Mon 24/8

06:30-20:30

2 stops29h 00m

$1,993

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Thu 23/7

07:20-09:40

3 stops35h 20m

Porto

Thu 27/8

06:10-06:05

3 stops38h 55m

$2,130

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Tue 14/7

07:35-09:45

3 stops35h 10m

Porto

Sun 13/9

10:45-06:25

2 stops34h 40m

$2,150
Fastest return journey

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Mon 13/7

07:20-09:40

3 stops35h 20m

Porto

Mon 14/9

06:30-20:30

2 stops29h 00m

$2,151

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Wed 8/7

07:25-10:00

3 stops35h 35m

Porto

Sun 13/9

10:45-06:45

2 stops35h 00m

$2,258
Cheapest one-way

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Wed 16/9

22:15-15:45

2 stops50h 30m

$1,038

Flights are sorted by cheapest return flights first.

Deals found on 16/6

Showing 1-10 of 14 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 20 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 19 June 2026.
Get a feel of what it's like to fly with KLM,Turkish Airlines, andQatar Airways 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
1,530 reviews
Check prices

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Comfort

7.7

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
1,530 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Comfort

7.7

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
4,409 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Comfort

7.7

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
7.3
Good
3,729 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Comfort

7.7

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
1,454 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Comfort

7.7

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
8,073 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Comfort

7.7

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.

  • How long is the flight from Sydney to Porto?

    Airlines like Etihad Airways fly from Sydney to Porto in about 51h 25m. The time it takes to get you to your destination can typically vary by up to . Sydney and Porto are separated by a distance of 18057 km.

  • 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 $1,203 on this airline. Additional options worth looking into are Etihad Airways and Lufthansa, starting at $1,366 and $1,665 round-trip. You may be able to fly from Sydney to Porto for 39% 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 19 June 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 19 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$1,203Average$1,625FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Etihad AirwaysCheapest$1,366Average$1,841FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
LufthansaCheapest$1,665Average$2,140FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Turkish AirlinesCheapest$1,694Average$1,932FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Qatar AirwaysCheapest$1,881Average$2,353FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
United AirlinesCheapest$1,910Average$2,329FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air FranceCheapest$2,345Average$2,483FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest$2,398Average$2,872FlexibilityNo 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.