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Cheap flights from Sydney to Porto from $688

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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — OPO
13 Sep — 20 Sep1
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 14 August 2026.

Sat 3/1019:40 -
2 stops44h 10m
Sun 18/1007:35 -
2 stops46h 15m
Deal found 11/8$1,512
Fri 13/1112:00 -
2 stops35h 35m
Sat 28/1112:00 -
3 stops35h 00m
Deal found 14/8$1,673
Fri 13/1121:30 -
2 stops56h 50m
Sat 28/1107:35 -
2 stops35h 55m
Deal found 14/8$1,706
Mon 16/1121:30 -
2 stops52h 45m
Mon 30/1120:10 -
2 stops58h 35m
Deal found 14/8$1,739
Thu 8/1021:35 -
2 stops43h 15m
Sat 24/1016:05 -
2 stops28h 25m
Deal found 14/8$1,776
Mon 16/1121:30 -
3 stops38h 00m
Mon 30/1111:00 -
3 stops32h 30m
Deal found 14/8$1,780
Sun 8/1116:50 -
2 stops37h 30m
Wed 11/1107:35 -
2 stops35h 55m
Deal found 13/8$1,793
Tue 8/922:15 -
2 stops50h 25m
Mon 14/906:30 -
2 stops27h 40m
Deal found 11/8$2,168

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 14 August 2026.

Round-trip from

$1,512

One-way from

$688

Popular in

December

Cheapest in

February

Average price

$2,625
3/10-18/10
  • 3/10-18/10
  • 4 total stops
  • 90h 25m total
  • Sydney to Porto
Search Deals
31/10
  • 31/10
  • 2 total stops
  • 52h 00m total
  • Sydney to Porto
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($236 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($115 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 14 August 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 Sydney Kingsford Smith - OPO Porto

SYDOPO

Sydney Kingsford Smith

Fri 13/11

12:00-22:00

3 stops45h 00m

Porto

Sat 28/11

11:00-10:00

3 stops36h 00m

$1,694

SydneyPorto

SYD Sydney Kingsford Smith - OPO Porto

SYDOPO

Sydney Kingsford Smith

Sun 8/11

16:50-19:20

2 stops37h 30m

Porto

Wed 11/11

07:35-06:30

2 stops35h 55m

$1,793

SydneyPorto

SYD Sydney Kingsford Smith - OPO Porto

SYDOPO

Sydney Kingsford Smith

Tue 8/9

22:15-15:40

2 stops50h 25m

Porto

Mon 14/9

06:30-19:10

2 stops27h 40m

$2,168
Fastest return journey

SydneyPorto

SYD Sydney Kingsford Smith - OPO Porto

SYDOPO

Sydney Kingsford Smith

Tue 8/9

21:05-15:40

2 stops27h 35m

Porto

Mon 14/9

06:30-19:10

2 stops27h 40m

$2,219

SydneyPorto

SYD Sydney Kingsford Smith - OPO Porto

SYDOPO

Sydney Kingsford Smith

Thu 8/10

22:05-09:45

2 stops45h 40m

Porto

Sat 24/10

11:00-06:30

3 stops33h 30m

$2,257

SydneyPorto

SYD Sydney Kingsford Smith - OPO Porto

SYDOPO

Sydney Kingsford Smith

Tue 1/9

20:50-17:20

2 stops53h 30m

Porto

Sun 20/9

07:35-06:10

2 stops37h 35m

$2,330

SydneyPorto

SYD Sydney Kingsford Smith - OPO Porto

SYDOPO

Sydney Kingsford Smith

Sun 8/11

21:35-13:30

3 stops50h 55m

Porto

Wed 11/11

16:25-19:25

2 stops40h 00m

$2,569
Cheapest one-way

SydneyPorto

SYD Sydney Kingsford Smith - OPO Porto

SYDOPO

Sydney Kingsford Smith

Sat 31/10

21:25-14:25

2 stops52h 00m

$688

SydneyPorto

SYD Sydney Kingsford Smith - OPO Porto

SYDOPO

Sydney Kingsford Smith

Mon 24/8

08:15-09:20

2 stops58h 05m

$5,688

SydneyPorto

SYD Sydney Kingsford Smith - OPO Porto

SYDOPO

Sydney Kingsford Smith

Tue 25/8

20:50-06:50

2 stops43h 00m

$5,796

Flights are sorted by cheapest return flights first.

Deals found on 12/8

Showing 1-10 of 13 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 much does it cost for a return flight from Sydney to Porto?

Airfare is below average for this route at the moment.

Sydney to Porto flights typically cost between $2,295 and $2,960 in October.
The cheapest return price found within the last 5 days was $1,512 on Multiple Airlines (3 Oct–18 Oct).

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 14 August 2026.
Get a feel of what it's like to fly with KLM,Air France, 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
1,559 reviews
Check prices

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Crew

8.4

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
KLM
7.8
Good
1,559 reviews
KLM
7.8
Good
1,559 reviews
Check prices

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Crew

8.4

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
Air France
7.5
Good
1,643 reviews
KLM
7.8
Good
1,559 reviews
Check prices

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Crew

8.4

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
Qatar Airways
7.4
Good
3,739 reviews
KLM
7.8
Good
1,559 reviews
Check prices

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Crew

8.4

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
Turkish Airlines
7.4
Good
4,474 reviews
KLM
7.8
Good
1,559 reviews
Check prices

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Crew

8.4

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
Etihad Airways
7.3
Good
1,505 reviews
KLM
7.8
Good
1,559 reviews
Check prices

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Crew

8.4

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

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 37h 30m. 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 $1,193 on this airline. Additional options worth looking into are Etihad Airways and Turkish Airlines, starting at $1,404 and $1,634 round-trip. You may be able to fly from Sydney to Porto for 41% 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 14 August 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 14 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$1,193Average$1,596FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Etihad AirwaysCheapest$1,404Average$1,781FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Turkish AirlinesCheapest$1,634Average$1,917FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Qatar AirwaysCheapest$1,666Average$2,245FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
United AirlinesCheapest$1,895Average$2,311FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest$1,924Average$2,531FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air FranceCheapest$1,952Average$2,464FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest$2,239Average$2,692FlexibilityNo 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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