$832 Cheap Flights from Porto (OPO) to Sydney (SYD)

View $832 flight on Wed, Dec 3, 2025Opens in a new window

Popular airlines from Porto Airport (OPO) to Sydney Airport (SYD)

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Cheap Flights from Porto to Sydney (OPO-SYD)

Prices were available within the past 7 days and start at $832 for one-way flights and $1,436 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Thu, Jan 29 - Sun, Mar 15
OPO
Porto
SYD
Sydney
$1,436 Roundtrip, found 17 hours ago
$1,436
Roundtrip
found 17 hours ago
Select Iberia flight, departing Thu, Jan 29 from Porto to Sydney, returning Sun, Mar 15, priced at $1,436 found 17 hours ago
Iberia
Thu, Jan 29 - Sun, Mar 15
OPO
Porto
SYD
Sydney
$1,445 Roundtrip, found 17 hours ago
$1,445
Roundtrip
found 17 hours ago
Select Iberia flight, departing Thu, Jan 29 from Porto to Sydney, returning Sun, Mar 15, priced at $1,445 found 17 hours ago
Iberia
Thu, Jan 29 - Sun, Mar 15
OPO
Porto
SYD
Sydney
$1,450 Roundtrip, found 17 hours ago
$1,450
Roundtrip
found 17 hours ago
Select Iberia flight, departing Thu, Jan 29 from Porto to Sydney, returning Sun, Mar 15, priced at $1,450 found 17 hours ago
Qatar Airways
Thu, Jan 29 - Sun, Mar 15
OPO
Porto
SYD
Sydney
$1,459 Roundtrip, found 17 hours ago
$1,459
Roundtrip
found 17 hours ago
Select Qatar Airways flight, departing Thu, Jan 29 from Porto to Sydney, returning Sun, Mar 15, priced at $1,459 found 17 hours ago
Qatar Airways
Thu, Jan 29 - Sun, Mar 15
OPO
Porto
SYD
Sydney
$1,468 Roundtrip, found 17 hours ago
$1,468
Roundtrip
found 17 hours ago
Select Qatar Airways flight, departing Thu, Jan 29 from Porto to Sydney, returning Sun, Mar 15, priced at $1,468 found 17 hours ago
Iberia
Thu, Jan 29 - Sun, Mar 15
OPO
Porto
SYD
Sydney
$1,471 Roundtrip, found 17 hours ago
$1,471
Roundtrip
found 17 hours ago
Select Iberia flight, departing Thu, Jan 29 from Porto to Sydney, returning Sun, Mar 15, priced at $1,471 found 17 hours ago
Qatar Airways
Thu, Jan 29 - Sun, Mar 15
OPO
Porto
SYD
Sydney
$1,473 Roundtrip, found 17 hours ago
$1,473
Roundtrip
found 17 hours ago
Select Qatar Airways flight, departing Thu, Jan 29 from Porto to Sydney, returning Sun, Mar 15, priced at $1,473 found 17 hours ago
British Airways
Wed, Jun 10 - Sun, Jun 14
OPO
Porto
SYD
Sydney
$1,633 Roundtrip, found 3 days ago
$1,633
Roundtrip
found 3 days ago
Select British Airways flight, departing Wed, Jun 10 from Porto to Sydney, returning Sun, Jun 14, priced at $1,633 found 3 days ago
Etihad Airways
Tue, Feb 3 - Thu, Feb 12
OPO
Porto
SYD
Sydney
$1,724 Roundtrip, found 16 hours ago
$1,724
Roundtrip
found 16 hours ago
Select Etihad Airways flight, departing Tue, Feb 3 from Porto to Sydney, returning Thu, Feb 12, priced at $1,724 found 16 hours ago
Lufthansa
Thu, Jan 29 - Sun, Mar 15
OPO
Porto
SYD
Sydney
$1,840 Roundtrip, found 17 hours ago
$1,840
Roundtrip
found 17 hours ago
Select Lufthansa flight, departing Thu, Jan 29 from Porto to Sydney, returning Sun, Mar 15, priced at $1,840 found 17 hours ago
Flights from Porto (OPO) to Sydney (SYD)
Origin airport
Dr. Francisco de Sa Carneiro
Destination airport
Kingsford Smith Intl.
Airlines serving
Air Europa, British Airways, Etihad Airways, Iberia, Lufthansa, Qatar Airways
Roundtrip price
$1,436
Distance
11226 mi

Porto to Sydney Flights

The cheapest times to fly from Porto to Sydney

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Porto to Sydney are during the month of January. You can find some of the cheapest flights from Porto to Sydney with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Porto to Sydney

Sunday is one of the best days to book for cheap flights from Porto to Sydney: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Porto to Sydney

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Porto to Sydney in 2025. You can also book with separate airlines for your outbound and return journeys, from $832 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Porto to Sydney flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Porto to Sydney airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Kingsford Smith Intl. Airport (SYD) cost?
Snag a cheap one-way flight from $832 or cheap return flight from $1,436 from Dr. Francisco de Sa Carneiro Airport (OPO) to Kingsford Smith Intl. Airport (SYD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Dr. Francisco de Sa Carneiro Airport (OPO) to Kingsford Smith Intl. Airport (SYD)?
January is the cheapest month to fly from OPO to SYD. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from Dr. Francisco de Sa Carneiro Airport (OPO) to Kingsford Smith Intl. Airport (SYD)?
To find the cheapest airline that'll fly you from OPO to SYD, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Dr. Francisco de Sa Carneiro Airport (OPO) to Kingsford Smith Intl. Airport (SYD)?
Nonstop flights from Dr. Francisco de Sa Carneiro Airport (OPO) to Kingsford Smith Intl. Airport (SYD) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from OPO to SYD?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Dr. Francisco de Sa Carneiro Airport (OPO) to Kingsford Smith Intl. Airport (SYD)?
Book a flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Kingsford Smith Intl. Airport (SYD) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Dr. Francisco de Sa Carneiro Airport (OPO) to Kingsford Smith Intl. Airport (SYD) last-minute?
Holding off until just before your departure to book a flight from OPO to SYD generally means paying more. While you may find some last-minute deals, they're not always guaranteed. Keep your travel plans flexible to maximize your chances of getting a bargain.
Is it cheaper to book an OPO to SYD flight and hotel package?
Securing an OPO to SYD flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our extensive range of hotels and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Kingsford Smith Intl. Airport (SYD)?
If you reserved your OPO to SYD flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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*Available to One Key members.