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Cheap flights from Sydney to Porto from $780

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 27/7. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — OPO
26 Jun — 3 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 27 May 2026.

Tue 14/719:40
SYD
-
OPO
2 stops32h 40m
Multiple Airlines
Tue 15/907:35
OPO
-
SYD
2 stops46h 15m
Multiple Airlines
Deal found 24/5$1,626
Sat 1/814:45
SYD
-
OPO
2 stops41h 45m
Multiple Airlines
Thu 10/916:40
OPO
-
SYD
2 stops27h 30m
Multiple Airlines
Deal found 22/5$1,832
Sat 18/721:30
SYD
-
OPO
2 stops42h 20m
Etihad Airways
Sun 18/1016:05
OPO
-
SYD
2 stops28h 30m
Etihad Airways
Deal found 24/5$1,852
Sat 25/721:30
SYD
-
OPO
2 stops42h 20m
Etihad Airways
Thu 27/816:05
OPO
-
SYD
2 stops53h 05m
Etihad Airways
Deal found 25/5$1,867
Thu 23/710:20
SYD
-
OPO
2 stops38h 25m
Multiple Airlines
Thu 27/806:10
OPO
-
SYD
2 stops29h 20m
Multiple Airlines
Deal found 24/5$1,896
Sat 18/711:00
SYD
-
OPO
2 stops35h 15m
Multiple Airlines
Sat 25/716:50
OPO
-
SYD
2 stops34h 45m
Multiple Airlines
Deal found 23/5$1,902
Sat 10/1021:30
SYD
-
OPO
2 stops52h 30m
Etihad Airways
Sat 24/1005:05
OPO
-
SYD
2 stops39h 30m
Etihad Airways
Deal found 22/5$1,917
Sat 1/821:30
SYD
-
OPO
2 stops42h 20m
Etihad Airways
Thu 10/920:10
OPO
-
SYD
2 stops49h 00m
Etihad Airways
Deal found 22/5$1,926

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 27 May 2026.

Round-trip from

$1,626

One-way from

$978

Popular in

December

Cheapest in

January

Average price

$1,871
14/7-15/9
  • 14/7-15/9
  • 4 total stops
  • 78h 55m total
  • Sydney to Porto
Search Deals
15/6
  • 15/6
  • 3 total stops
  • 43h 20m total
  • Sydney to Porto
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($277 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 27 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

Fri 24/7

10:00-15:40

2 stops38h 40m

Porto

Fri 11/9

10:40-10:20

2 stops38h 40m

$1,944
Fastest return journey

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Fri 24/7

14:35-15:40

2 stops34h 05m

Porto

Thu 27/8

06:10-20:30

2 stops29h 20m

$1,945

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sat 1/8

21:30-19:20

2 stops54h 50m

Porto

Wed 9/9

07:00-06:10

2 stops38h 10m

$2,015

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sun 12/7

15:40-06:50

2 stops48h 10m

Porto

Sun 16/8

16:05-06:10

2 stops29h 05m

$2,051

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sat 1/8

13:05-15:40

2 stops35h 35m

Porto

Fri 11/9

10:40-09:40

2 stops38h 00m

$2,078

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sun 8/11

10:00-15:10

2 stops40h 10m

Porto

Thu 12/11

10:55-19:35

2 stops45h 40m

$2,097

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sun 8/11

16:35-19:20

2 stops37h 45m

Porto

Thu 12/11

07:35-17:55

2 stops47h 20m

$2,156

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Tue 14/7

07:20-09:45

3 stops35h 25m

Porto

Tue 15/9

16:50-09:40

2 stops31h 50m

$2,180

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Fri 24/7

21:05-09:45

1 stop45h 40m

Porto

Thu 27/8

06:10-19:10

1 stop28h 00m

$2,293

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sat 11/7

10:00-15:40

2 stops38h 40m

Porto

Tue 21/7

10:40-09:40

2 stops38h 00m

$2,351

Flights are sorted by cheapest return flights first.

Deals found on 26/5

Showing 1-10 of 19 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 27 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
1,522 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

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
1,522 reviews
KLM
7.8
Good
1,522 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

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
3,726 reviews
KLM
7.8
Good
1,522 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

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
4,396 reviews
KLM
7.8
Good
1,522 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

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
1,445 reviews
KLM
7.8
Good
1,522 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

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
8,032 reviews
KLM
7.8
Good
1,522 reviews
Check prices

Comfort

7.7

Entertainment

7.2

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

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 54h 50m. 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 $1,179 on this airline. Additional options worth looking into are Etihad Airways and Lufthansa, starting at $1,338 and $1,632 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

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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 27 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 27 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$1,179Average$1,593FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Etihad AirwaysCheapest$1,338Average$1,789FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
LufthansaCheapest$1,632Average$2,097FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Turkish AirlinesCheapest$1,658Average$1,897FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
United AirlinesCheapest$1,871Average$2,282FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qatar AirwaysCheapest$2,015Average$2,306FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Air FranceCheapest$2,298Average$2,586FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest$2,350Average$2,815FlexibilityNo 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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