Find flights
When to book
Airlines
FAQs

Cheap flights from Sydney to Porto from $670

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — OPO
12 Mar — 19 Mar1
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 10 February 2026.

Wed 4/321:15
SYD
-
OPO
3 stops35h 30m
Multiple Airlines
Wed 18/321:55
OPO
-
SYD
3 stops34h 25m
Multiple Airlines
Deal found 6/2$1,416
Sun 10/515:40
SYD
-
OPO
2 stops56h 35m
Etihad Airways
Sun 24/511:35
OPO
-
SYD
2 stops44h 15m
Etihad Airways
Deal found 9/2$1,515
Wed 4/316:35
SYD
-
OPO
2 stops61h 45m
Etihad Airways
Wed 18/311:35
OPO
-
SYD
2 stops32h 00m
Etihad Airways
Deal found 6/2$1,535
Mon 16/321:45
SYD
-
OPO
2 stops44h 05m
Etihad Airways
Thu 19/320:10
OPO
-
SYD
2 stops34h 45m
Etihad Airways
Deal found 6/2$1,590
Thu 28/510:20
SYD
-
OPO
2 stops38h 20m
Multiple Airlines
Thu 17/910:45
OPO
-
SYD
2 stops34h 40m
Multiple Airlines
Deal found 6/2$1,631
Mon 5/1012:45
SYD
-
OPO
2 stops31h 00m
Turkish Airlines
Thu 29/1016:10
OPO
-
SYD
2 stops40h 40m
Turkish Airlines
Deal found 9/2$1,681
Wed 29/420:30
SYD
-
OPO
2 stops55h 50m
Multiple Airlines
Wed 24/609:00
OPO
-
SYD
2 stops39h 00m
Multiple Airlines
Deal found 6/2$1,692
Mon 8/610:10
SYD
-
OPO
2 stops42h 40m
British Airways
Fri 18/911:15
OPO
-
SYD
2 stops33h 50m
British Airways
Deal found 6/2$1,694
Mon 16/316:15
SYD
-
OPO
2 stops52h 40m
Multiple Airlines
Tue 24/310:50
OPO
-
SYD
2 stops34h 40m
Multiple Airlines
Deal found 9/2$1,719

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 10 February 2026.

Round-trip from

$1,416

One-way from

$670

Popular in

December

Cheapest in

February

Average price

$1,488
4/3-18/3
  • 4/3-18/3
  • 6 total stops
  • 69h 55m total
  • Sydney to Porto
Search Deals
21/4
  • 21/4
  • 3 total stops
  • 50h 25m total
  • Sydney to Porto
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($364 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($128 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 10 February 2026.
Use the filters below to find and compare flights from Sydney to Porto that are best for you.

Fly from

Sydney

Fly to

Porto

Route

Depart

Return

Price

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Wed 4/3

21:15-21:45

3 stops35h 30m

Porto

Wed 18/3

21:55-19:20

3 stops34h 25m

$1,416

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sun 10/5

15:40-15:15

2 stops56h 35m

Porto

Sun 24/5

11:35-16:50

2 stops44h 15m

$1,515

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Wed 4/3

16:35-19:20

2 stops61h 45m

Porto

Wed 18/3

11:35-06:35

2 stops32h 00m

$1,535

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Mon 16/3

16:35-19:20

2 stops37h 45m

Porto

Thu 19/3

16:05-17:55

2 stops38h 50m

$1,599

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Thu 28/5

10:20-15:40

2 stops38h 20m

Porto

Thu 17/9

10:45-06:25

2 stops34h 40m

$1,631

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Wed 29/4

20:30-19:20

2 stops55h 50m

Porto

Wed 24/6

09:00-09:00

2 stops39h 00m

$1,692

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Mon 8/6

10:10-19:50

2 stops42h 40m

Porto

Fri 18/9

11:15-06:05

2 stops33h 50m

$1,694

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Mon 16/3

16:15-09:55

2 stops52h 40m

Porto

Tue 24/3

10:50-08:30

2 stops34h 40m

$1,719

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Wed 10/6

11:40-09:45

2 stops31h 05m

Porto

Fri 28/8

10:45-10:20

2 stops38h 35m

$1,721

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sun 15/2

12:00-09:25

2 stops56h 25m

$675

Flights are sorted by cheapest return flights first.

Deals found on 10/2

Showing 1-10 of 17 results
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?

Use this chart to determine the optimal time to book a return flight from Sydney to Porto. Price data was last updated on 6 February 2026.

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 28 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 10 February 2026.
Get a feel of what it's like to fly with KLM, Qatar Airways, andEtihad 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
7.7
Good
1,451 reviews
Check prices

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Boarding

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
7.7
Good
1,451 reviews
KLM
7.7
Good
1,451 reviews
Check prices

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Boarding

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
7.4
Good
3,730 reviews
KLM
7.7
Good
1,451 reviews
Check prices

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Boarding

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
1,392 reviews
KLM
7.7
Good
1,451 reviews
Check prices

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Boarding

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
7.3
Good
4,213 reviews
KLM
7.7
Good
1,451 reviews
Check prices

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Lufthansa
6.8
Okay
7,777 reviews
KLM
7.7
Good
1,451 reviews
Check prices

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Boarding

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 56h 35m. 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 Etihad Airways. Our recent data shows that you can find tickets from as low as $1,354 on this airline. Additional options worth looking into are Japan Airlines and Turkish Airlines, starting at $1,513 and $1,608 round-trip. You may be able to fly from Sydney to Porto for 31% less than the average price by searching for these airlines.

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

    The cheapest airline one-way is Etihad Airways, with whom users have recently found tickets for as low as $884. However, be on the lookout for offers from Turkish Airlines and Lufthansa, as they are both options that can get you from Sydney to Porto for a low price.

  • 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 10 February 2026.
KLM flights from Sydney Kingsford Smith to Porto
Air France flights from Sydney Kingsford Smith to Porto

Top 9 airlines flying from Sydney to Porto

Discover the top 9 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 10 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$1,354Average$1,860FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Japan AirlinesCheapest$1,513Average$1,802FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Turkish AirlinesCheapest$1,608Average$1,887FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
LufthansaCheapest$1,657Average$2,053FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest$1,851Average$2,425FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest$1,867Average$1,904FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest$2,096Average$2,626FlexibilityNo cancel feeOn-time77%
Search Air France flights
Qatar AirwaysCheapest$2,141Average$2,403FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
KLMCheapest$2,302Average$2,859FlexibilityNo 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.