Find flights
When to book
Airlines
FAQs

Cheap flights from Sydney to Porto from $892

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — OPO
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from Sydney Kingsford Smith to Porto are usually found in March or January, booked 66 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 13 June 2025.

Round-trip from

$1,788

One-way from

$947

Popular in

December

Cheapest in

March

Average price

$2,263
14/8-18/9
  • 14/8-18/9
  • 6 total stops
  • 72h 10m total
  • Sydney to Porto
Search Deals
11/7
  • 11/7
  • 2 total stops
  • 41h 20m total
  • Sydney to Porto
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($238 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($110 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 13 June 2025.

Thu 14/821:15SYD - OPO
3 stops33h 50mMultiple Airlines
Thu 18/910:25OPO - SYD
3 stops38h 20mMultiple Airlines
Deal found 12/6$1,788
Tue 9/920:55SYD - OPO
2 stops27h 55mTurkish Airlines
Tue 30/916:50OPO - SYD
2 stops41h 10mTurkish Airlines
Deal found 11/6$1,922
Thu 31/721:30SYD - OPO
2 stops42h 20mEtihad Airways
Thu 11/916:05OPO - SYD
2 stops39h 50mEtihad Airways
Deal found 11/6$1,940
Wed 3/909:30SYD - OPO
2 stops33h 15mUnited Airlines
Fri 26/912:35OPO - SYD
2 stops33h 25mUnited Airlines
Deal found 11/6$2,031
Thu 14/808:55SYD - OPO
2 stops55h 40mJapan Airlines
Thu 18/908:15OPO - SYD
2 stops37h 05mJapan Airlines
Deal found 12/6$2,172
Sat 6/906:15SYD - OPO
3 stops37h 25mKLM
Sun 28/916:20OPO - SYD
2 stops32h 40mKLM
Deal found 11/6$2,653
Tue 7/1006:00SYD - OPO
2 stops26h 55mEmirates
Thu 23/1018:05OPO - SYD
2 stops27h 00mEmirates
Deal found 12/6$5,600
Sun 27/711:00SYD - OPO
2 stops39h 20mSWISS
Sat 2/803:05OPO - SYD
2 stops41h 50mSWISS
Deal found 12/6$7,367
Sun 27/709:20SYD - OPO
3 stops33h 25mAir Canada
Sat 2/803:05OPO - SYD
2 stops43h 15mAir Canada
Deal found 12/6$11,021

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 13 June 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

Thu 14/8

21:15-22:05

3 stops33h 50m

Porto

Thu 18/9

10:25-09:45

3 stops38h 20m

$1,788

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Tue 9/9

20:55-15:50

2 stops27h 55m

Porto

Tue 30/9

16:50-19:00

2 stops41h 10m

$1,922

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Thu 31/7

21:30-06:50

2 stops42h 20m

Porto

Thu 11/9

16:05-16:55

2 stops39h 50m

$1,940

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Wed 3/9

09:30-09:45

2 stops33h 15m

Porto

Fri 26/9

12:35-07:00

2 stops33h 25m

$2,031

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Thu 14/8

08:55-07:35

2 stops55h 40m

Porto

Thu 18/9

08:15-06:20

2 stops37h 05m

$2,172

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sat 6/9

06:15-10:40

3 stops37h 25m

Porto

Sun 28/9

16:20-10:00

2 stops32h 40m

$2,653

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Tue 7/10

06:00-22:55

2 stops26h 55m

Porto

Thu 23/10

18:05-07:05

2 stops27h 00m

$5,600

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sun 27/7

11:00-17:20

2 stops39h 20m

Porto

Sat 2/8

03:05-05:55

2 stops41h 50m

$7,367

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Sun 27/7

09:20-09:45

3 stops33h 25m

Porto

Sat 2/8

03:05-07:20

2 stops43h 15m

$11,021

SydneyPorto

SYD - OPO

SYDOPO

Sydney Kingsford Smith

Mon 15/9

14:25-20:15

3 stops38h 50m

$892

Flights are sorted by cheapest return flights first.

Deals found on 11/6

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 9 June 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 63 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 13 June 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.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 18.0 - 195.0 inches per month. December is typically the wettest month, when rainfall can reach 195.0 mm. July is typically the driest time to visit Porto when rainfall is around 18.0 mm.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 9.0 C).

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 13 June 2025.
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Overall

8.3

Food

7.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
Japan Airlines
8.3
Very Good
1,490 reviews
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Overall

8.3

Food

7.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
KLM
7.8
Good
1,358 reviews
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Overall

8.3

Food

7.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
SWISS
7.5
Good
1,624 reviews
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Overall

8.3

Food

7.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
Etihad Airways
7.4
Good
1,211 reviews
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Overall

8.3

Food

7.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
United Airlines
7.4
Good
8,790 reviews
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Overall

8.3

Food

7.7

Boarding

8.4

Comfort

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.

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 Turkish Airlines. Our recent data shows that you can find tickets from as low as $1,922 on this airline. Additional options worth looking into are Etihad Airways and United Airlines, starting at $1,940 and $2,031 round-trip. You may be able to fly from Sydney to Porto for 11% 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 Sydney?

Book flights to Sydney if you plan to visit one of these locations
Viseu
Aveiro

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 13 June 2025.
KLM flights from Sydney Kingsford Smith to Porto

Top 6 airlines flying from Sydney to Porto

Discover the top 6 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$1,644Average$2,087FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
LufthansaCheapest$1,765Average$2,189FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
SWISSCheapest$1,876Average$2,176FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Qatar AirwaysCheapest$2,187Average$2,626FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
KLMCheapest$2,199Average$2,664FlexibilityNo cancel feeOn-time75%
Search KLM flights
EmiratesCheapest$2,655Average$3,775FlexibilityNo cancel feeOn-time75%
Search Emirates 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.
Site
©2025 Cheapflights