What are the cheapest airlines flying from Porto to Sydney round-trip?

Our cheapest airline available from Porto to Sydney is Etihad Airways. Our recent data shows that you can find tickets from as low as $2,295 on this airline. Additional options worth looking into are British Airways and United Airlines, starting at $2,813 and $2,867 round-trip. Etihad Airways is priced at 4% lower than the current average price of a flight leaving 3 months from now. Find deals

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

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

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm. Find deals

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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

Our data shows that February tends to be the cheapest month to fly to Sydney from Porto. Users have commonly found prices around $2,396 for the month, but tickets can be as low as $2,029. Due to multiple factors, prepare for potentially higher prices in April.

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

When flying from Porto to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Porto to Sydney that include hotel bookings?

Yes. In addition to deals on Porto to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Porto to Sydney?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Sydney.

Can I find deals for business class flights from Porto to Sydney?

Yes. Cheapflights offers flight deals from Porto to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$2,163+ Flights from Porto to Sydney

Cheap flight deals from Porto to Sydney

Round-trip from	$2,199
Popular in	April
Cheapest in	February
Average price	$2,469

12/8-27/8
5 total stops
85h 45m total
Porto to Sydney

Search Deals

Highest demand for flights based on searches. 1% potential increase in price ($48 potential increase over avg. return price).

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Cheapest flight prices on average. 2% potential price decrease ($73 potential savings vs. average return price).

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Average for round-trip flights in June 2025

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Find flight deals from Porto to Sydney

Cheapest flights from Porto to Sydney
Explore the most affordable flight options available from Porto to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 June 2025.

Sat 28/608:35OPO - SYD

3 stops37h 45mMultiple Airlines

Mon 14/709:15SYD - OPO

3 stops46h 10mMultiple Airlines

Deal found 24/6$2,163

Thu 3/720:10OPO - SYD

2 stops49h 00mEtihad Airways

Thu 17/721:30SYD - OPO

2 stops42h 20mEtihad Airways

Deal found 25/6$2,295

Fri 5/1216:10OPO - SYD

2 stops28h 30mTurkish Airlines

Mon 22/1221:45SYD - OPO

2 stops28h 25mTurkish Airlines

Deal found 25/6$2,651

Thu 3/709:55OPO - SYD

2 stops34h 25mBritish Airways

Thu 17/714:40SYD - OPO

2 stops38h 40mBritish Airways

Deal found 27/6$2,708

Thu 3/712:35OPO - SYD

2 stops57h 25mUnited Airlines

Thu 17/709:30SYD - OPO

2 stops33h 15mUnited Airlines

Deal found 26/6$2,867

Mon 11/806:15OPO - SYD

3 stops40h 05mAir Canada

Tue 26/809:20SYD - OPO

3 stops57h 00mAir Canada

Deal found 25/6$3,893

Thu 18/1216:10OPO - SYD

3 stops28h 15mKLM

Mon 5/111:00SYD - OPO

2 stops34h 50mKLM

Deal found 26/6$7,001

Sat 9/803:05OPO - SYD

2 stops41h 50mSWISS

Sun 17/811:00SYD - OPO

2 stops39h 20mSWISS

Deal found 26/6$7,180

Best flights from Porto to Sydney
Discover carefully curated flight deals from Porto to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 June 2025.

Tue 12/806:20OPO - SYD

3 stops44h 15mMultiple Airlines

Wed 27/812:50SYD - OPO

2 stops41h 30mMultiple Airlines

Deal found 25/6$2,199

Thu 3/720:10OPO - SYD

2 stops49h 00mEtihad Airways

Thu 17/721:30SYD - OPO

2 stops42h 20mEtihad Airways

Deal found 25/6$2,295

Thu 3/709:55OPO - SYD

2 stops34h 25mBritish Airways

Thu 17/714:40SYD - OPO

2 stops38h 40mBritish Airways

Deal found 26/6$2,813

Thu 3/712:35OPO - SYD

2 stops57h 25mUnited Airlines

Thu 17/709:30SYD - OPO

2 stops33h 15mUnited Airlines

Deal found 26/6$2,867

Mon 11/806:15OPO - SYD

3 stops40h 05mAir Canada

Tue 26/809:20SYD - OPO

3 stops57h 00mAir Canada

Deal found 25/6$3,893

Sat 9/803:05OPO - SYD

2 stops41h 50mSWISS

Sun 17/811:00SYD - OPO

2 stops39h 20mSWISS

Deal found 26/6$7,180

Last-minute flights from Porto to Sydney
Discover last-minute flight deals from Porto to Sydney. Data last updated 27 June 2025 and is based on user searches.

Sat 28/608:35OPO - SYD

3 stops37h 45mMultiple Airlines

Mon 14/709:15SYD - OPO

3 stops46h 10mMultiple Airlines

Deal found 24/6$2,163

Mon 30/606:00OPO - SYD

2 stops40h 20mAir Canada

Mon 14/709:20SYD - OPO

3 stops33h 15mAir Canada

Deal found 27/6$5,217

Thu 3/720:10OPO - SYD

2 stops49h 00mEtihad Airways

Thu 17/721:30SYD - OPO

2 stops42h 20mEtihad Airways

Deal found 25/6$2,295

Thu 3/709:55OPO - SYD

2 stops34h 25mBritish Airways

Thu 17/714:40SYD - OPO

2 stops38h 40mBritish Airways

Deal found 26/6$2,813

Thu 3/712:35OPO - SYD

2 stops57h 25mUnited Airlines

Thu 17/709:30SYD - OPO

2 stops33h 15mUnited Airlines

Deal found 26/6$2,867

Thu 3/720:10OPO - SYD

3 stops35h 45mMultiple Airlines

Thu 17/719:30SYD - OPO

2 stops29h 20mMultiple Airlines

Deal found 25/6$3,007

Thu 3/706:15OPO - SYD

3 stops40h 05mAir Canada

Thu 17/709:20SYD - OPO

3 stops38h 40mAir Canada

Deal found 25/6$7,226

Thu 3/709:55OPO - SYD

2 stops34h 25mBritish Airways

Thu 17/714:40SYD - OPO

2 stops38h 40mBritish Airways

Deal found 27/6$2,708

Cheapflights Fare Finder

Use the filters below to find and compare flights from Porto to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortoSydney

OPO - SYD

OPOSYD

Porto

Tue 12/8

06:20-11:35

3 stops44h 15m

Sydney Kingsford Smith

Wed 27/8

12:50-21:20

2 stops41h 30m

$2,199

PortoSydney

OPO - SYD

OPOSYD

Porto

Thu 3/7

20:10-06:10

2 stops49h 00m

Sydney Kingsford Smith

Thu 17/7

21:30-06:50

2 stops42h 20m

$2,295

PortoSydney

OPO - SYD

OPOSYD

Porto

Thu 3/7

09:55-05:20

2 stops34h 25m

Sydney Kingsford Smith

Thu 17/7

14:40-20:20

2 stops38h 40m

$2,813

PortoSydney

OPO - SYD

OPOSYD

Porto

Thu 3/7

12:35-07:00

2 stops57h 25m

Sydney Kingsford Smith

Thu 17/7

09:30-09:45

2 stops33h 15m

$2,867

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 11/8

06:15-07:20

3 stops40h 05m

Sydney Kingsford Smith

Tue 26/8

09:20-09:20

3 stops57h 00m

$3,893

PortoSydney

OPO - SYD

OPOSYD

Porto

Sat 9/8

03:05-05:55

2 stops41h 50m

Sydney Kingsford Smith

Sun 17/8

11:00-17:20

2 stops39h 20m

$7,180

Flights are sorted by cheapest return flights first.

Deals found on 25/6

Best time to book a flight from Porto to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Porto 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 Porto to Sydney

What is the cheapest month to book a flight from Porto to Sydney?

Currently, May is the cheapest month in which you can book a flight from Porto to Sydney (average of $129). Flying from Porto to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Porto to Sydney?

Reviews of airlines servicing Sydney

Check out reviews from past customers who have flown with SWISS, Etihad Airways, andUnited Airlines from Porto to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

SWISS

7.5

Good

1,649 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.

SWISS

7.5

Good

1,649 reviews

SWISS

7.5

Good

1,649 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.

Etihad Airways

7.4

Good

1,221 reviews

SWISS

7.5

Good

1,649 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.

United Airlines

7.4

Good

8,838 reviews

SWISS

7.5

Good

1,649 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.

Air Canada

7.1

Good

9,637 reviews

SWISS

7.5

Good

1,649 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.

British Airways

6.6

Okay

7,067 reviews

SWISS

7.5

Good

1,649 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.

Related info for your journey

What are the cheapest airlines flying from Porto to Sydney round-trip?
Our cheapest airline available from Porto to Sydney is Etihad Airways. Our recent data shows that you can find tickets from as low as $2,295 on this airline. Additional options worth looking into are British Airways and United Airlines, starting at $2,813 and $2,867 round-trip. Etihad Airways is priced at 4% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Porto to Sydney that include hotel bookings?
Yes. In addition to deals on Porto to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Porto to Sydney?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Sydney.
Can I find deals for business class flights from Porto to Sydney?
Yes. Cheapflights offers flight deals from Porto to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Porto to Sydney?
Currently, May is the cheapest month in which you can book a flight from Porto to Sydney (average of $129). Flying from Porto to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Parramatta

Wollongong

Katoomba

Manly

Penrith

Coogee

Randwick

Cronulla

Terrigal

Lithgow

Bondi Beach

Leura

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How does Cheapflights help users find flights from Porto to Sydney?

Deals for Porto to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Porto to Sydney?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Porto to Sydney for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Porto to Sydney with no change fees?

Need flexible booking options for your flight to Sydney from Porto? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Porto to Sydney become cheaper?

Yes, Cheapflights offers price alerts on Porto to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Porto to Sydney from $2,163

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/6. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Porto to Sydney

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Porto to Sydney

Cheapest flights from Porto to SydneyExplore the most affordable flight options available from Porto to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 June 2025.

Explore the most affordable flight options available from Porto to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 June 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Porto to Sydney that are best for you.

Best time to book a flight from Porto to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Porto with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Porto to Sydney

What is the cheapest month to book a flight from Porto to Sydney?

How much does it cost for a return flight from Porto to Sydney?

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated 27 June 2025.

Check out reviews from past customers who have flown with SWISS, Etihad Airways, andUnited Airlines from Porto to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Porto to Sydney. 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 Porto to Sydney round-trip?

Can I find deals for flights from Porto to Sydney that include hotel bookings?

How can I find direct flights from Porto to Sydney?

Can I find deals for business class flights from Porto to Sydney?

What is the cheapest month to book a flight from Porto to Sydney?

Travelling to a place near Porto?

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Alternative routes for Porto to Sydney

See prices for flight routes from nearby airports that may be better suited for you.

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 Porto to Sydney?

Why should you use Cheapflights to find cheap flight tickets from Porto to Sydney?

Can Cheapflights find flights from Porto to Sydney with no change fees?

Can Cheapflights notify me if prices for flights from Porto to Sydney become cheaper?

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Cheapest flights from Porto to Sydney
Explore the most affordable flight options available from Porto to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 June 2025.