Cheap flights from Sydney to Porto from $783

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 27/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — OPO
2 Sep — 9 Sep1
1 adult

Cheapflights Tip: The best prices from Sydney Kingsford Smith to Porto are usually found in January or May, booked 28 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap 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 28 August 2025.

Round-trip from

$1,918

One-way from

$783

Popular in

December

Cheapest in

January

Average price

$2,453
20/10-31/10
  • 20/10-31/10
  • 6 total stops
  • 73h 25m total
  • Sydney to Porto
27/10
  • 27/10
  • 3 total stops
  • 49h 50m total
  • Sydney to Porto
Highest demand for flights based on searches. 7% potential increase in price ($276 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($117 potential savings vs. average return price).
Average for round-trip flights in August 2025

Find flight deals from Sydney to Porto

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 28 August 2025.

Mon 20/1011:15SYD - OPO
3 stops40h 50mMultiple Airlines
Fri 31/1013:40OPO - SYD
3 stops32h 35mMultiple Airlines
Deal found 26/8$1,918
Mon 22/914:50SYD - OPO
2 stops41h 15mMultiple Airlines
Tue 14/1007:00OPO - SYD
2 stops28h 30mMultiple Airlines
Deal found 26/8$2,271
Sat 6/912:50SYD - OPO
2 stops31h 25mMultiple Airlines
Sat 13/918:45OPO - SYD
2 stops30h 35mMultiple Airlines
Deal found 27/8$2,993
Thu 28/811:05SYD - OPO
2 stops30h 20mMultiple Airlines
Fri 12/916:20OPO - SYD
2 stops29h 20mMultiple Airlines
Deal found 26/8$3,027
Fri 10/1021:45SYD - OPO
2 stops35h 10mEmirates
Fri 17/1021:15OPO - SYD
2 stops59h 05mEmirates
Deal found 26/8$3,185
Thu 28/814:50SYD - OPO
2 stops33h 40mKLM
Fri 12/916:20OPO - SYD
2 stops27h 50mKLM
Deal found 27/8$3,266
Fri 29/814:50SYD - OPO
2 stops30h 20mMultiple Airlines
Fri 12/915:30OPO - SYD
2 stops29h 45mMultiple Airlines
Deal found 26/8$3,363
Sat 27/911:45SYD - OPO
3 stops31h 55mKLM
Sat 11/1016:20OPO - SYD
2 stops29h 20mKLM
Deal found 27/8$3,490

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 28 August 2025.
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

Mon 20/10

11:15-18:05

3 stops40h 50m

Porto

Fri 31/10

13:40-09:15

3 stops32h 35m

$1,918

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sun 12/10

15:50-15:40

2 stops33h 50m

Porto

Sun 19/10

06:15-06:10

2 stops37h 55m

$2,101

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Mon 22/9

14:50-23:05

2 stops41h 15m

Porto

Tue 14/10

07:00-21:30

2 stops28h 30m

$2,271

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Fri 10/10

21:45-22:55

2 stops35h 10m

Porto

Fri 17/10

21:15-18:20

2 stops59h 05m

$3,185

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sat 27/9

11:45-10:40

3 stops31h 55m

Porto

Sat 11/10

16:20-07:40

2 stops29h 20m

$3,490

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Mon 27/10

20:05-10:55

3 stops49h 50m

$783

Flights are sorted by cheapest return flights first.

Deals found on 26/8

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 22 August 2025.

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.

What is the cheapest time of day to fly from SYD to OPO?

Find hourly flight availability from Sydney to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 August 2025.

It’s optimal to fly from Sydney to Porto in the evening. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Sydney to Porto?

Use this chart to determine the cheapest time to fly return from Sydney to Porto. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Sydney to Porto flight should consider departing on Friday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 28 August 2025.
Get a feel of what it's like to fly with SWISS, 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.

Comfort

7.4

Entertainment

6.8

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.

Comfort

7.4

Entertainment

6.8

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.

Comfort

7.4

Entertainment

6.8

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.

Comfort

7.4

Entertainment

6.8

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.

Comfort

7.4

Entertainment

6.8

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.

Comfort

7.4

Entertainment

6.8

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.

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.
  • 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 $1,453 on this airline. Additional options worth looking into are Turkish Airlines and Lufthansa, starting at $1,676 and $1,771 round-trip. You may be able to fly from Sydney to Porto for 33% 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 28 August 2025.

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 28 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$1,453Average$2,173FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Turkish AirlinesCheapest$1,676Average$2,067FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
LufthansaCheapest$1,771Average$1,968FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
SWISSCheapest$1,883Average$2,153FlexibilityNo cancel feeOn-time79%
Search SWISS flights
United AirlinesCheapest$2,012Average$2,678FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qatar AirwaysCheapest$2,195Average$2,793FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
KLMCheapest$2,474Average$2,991FlexibilityNo cancel feeOn-time75%
Search KLM flights
EmiratesCheapest$2,664Average$3,784FlexibilityNo cancel feeOn-time75%
Search Emirates flights

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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?

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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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