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Cheap flights from Sydney to Porto from $850

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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — OPO
16 Aug — 23 Aug1
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 17 July 2026.

Mon 3/811:00
SYD
-
OPO
2 stops41h 20m
Multiple Airlines
Fri 28/820:10
OPO
-
SYD
2 stops51h 50m
Multiple Airlines
Deal found 13/7$1,532
Wed 5/811:00
SYD
-
OPO
2 stops37h 15m
Multiple Airlines
Tue 18/820:10
OPO
-
SYD
2 stops51h 50m
Multiple Airlines
Deal found 17/7$1,543
Fri 30/1016:35
SYD
-
OPO
3 stops33h 25m
Multiple Airlines
Mon 9/1105:00
OPO
-
SYD
3 stops38h 35m
Multiple Airlines
Deal found 14/7$1,693
Fri 31/719:40
SYD
-
OPO
2 stops32h 40m
Multiple Airlines
Tue 4/820:10
OPO
-
SYD
2 stops33h 40m
Multiple Airlines
Deal found 14/7$1,706
Wed 5/811:40
SYD
-
OPO
2 stops37h 00m
Turkish Airlines
Tue 18/816:50
OPO
-
SYD
2 stops31h 50m
Turkish Airlines
Deal found 16/7$1,750
Tue 10/1121:30
SYD
-
OPO
2 stops48h 20m
Etihad Airways
Sat 14/1107:35
OPO
-
SYD
2 stops36h 00m
Etihad Airways
Deal found 13/7$1,760
Wed 11/1116:35
SYD
-
OPO
2 stops49h 10m
Etihad Airways
Sun 15/1107:35
OPO
-
SYD
2 stops35h 55m
Etihad Airways
Deal found 15/7$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 17 July 2026.

Round-trip from

$1,532

One-way from

$850

Popular in

December

Cheapest in

February

Average price

$2,180
3/8-28/8
  • 3/8-28/8
  • 4 total stops
  • 93h 10m total
  • Sydney to Porto
Search Deals
24/8
  • 24/8
  • 3 total stops
  • 46h 05m total
  • Sydney to Porto
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($317 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 July 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 17 July 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

Fri 30/10

16:35-15:00

3 stops33h 25m

Porto

Mon 9/11

05:00-06:35

3 stops38h 35m

$1,693
Fastest return journey

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Fri 31/7

19:40-19:20

2 stops32h 40m

Porto

Tue 4/8

20:10-14:50

2 stops33h 40m

$1,706

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Tue 10/11

21:30-10:50

2 stops48h 20m

Porto

Sat 14/11

07:35-06:35

2 stops36h 00m

$1,760

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Wed 11/11

16:50-06:45

2 stops48h 55m

Porto

Sun 15/11

07:35-06:30

2 stops35h 55m

$1,796

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Mon 3/8

07:35-09:40

3 stops35h 05m

Porto

Fri 28/8

16:45-09:40

2 stops31h 55m

$1,924

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Thu 6/8

07:35-09:40

3 stops35h 05m

Porto

Fri 21/8

10:40-05:10

2 stops33h 30m

$2,004

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sat 1/8

10:00-23:30

2 stops46h 30m

Porto

Fri 2/10

16:45-10:00

2 stops56h 15m

$2,497
Cheapest one-way

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Thu 30/7

20:30-23:00

2 stops59h 30m

$922

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Fri 28/8

13:00-13:10

3 stops57h 10m

$1,006

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Thu 15/10

12:40-15:45

2 stops37h 05m

$1,019

Flights are sorted by cheapest return flights first.

Deals found on 14/7

Showing 1-10 of 17 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 62 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 17 July 2026.
Get a feel of what it's like to fly with KLM,Air France, 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
1,541 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.8
Good
1,541 reviews
KLM
7.8
Good
1,541 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Air France
7.5
Good
1,626 reviews
KLM
7.8
Good
1,541 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Turkish Airlines
7.4
Good
4,448 reviews
KLM
7.8
Good
1,541 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Qatar Airways
7.3
Good
3,743 reviews
KLM
7.8
Good
1,541 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Etihad Airways
7.3
Good
1,479 reviews
KLM
7.8
Good
1,541 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 48h 20m. 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 $1,207 on this airline. Additional options worth looking into are Etihad Airways and Qatar Airways, starting at $1,379 and $1,685 round-trip. You may be able to fly from Sydney to Porto for 40% 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

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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 17 July 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 17 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$1,207Average$1,631FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Etihad AirwaysCheapest$1,379Average$1,796FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Qatar AirwaysCheapest$1,685Average$2,303FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Turkish AirlinesCheapest$1,700Average$1,940FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
United AirlinesCheapest$1,916Average$2,337FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest$1,945Average$2,559FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air FranceCheapest$1,974Average$2,492FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest$2,263Average$2,773FlexibilityNo 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.

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