This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — OPO
4 Jan — 11 Jan1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Sydney Kingsford Smith to Porto are usually found in January or March, booked 28 days in advance, depart on a Tuesday or Monday and return on a Monday
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 5 December 2025.
Fri 5/1221:30SYD - OPO
2 stops49h 35mEtihad Airways
Thu 23/416:05OPO - SYD
2 stops39h 55mEtihad Airways
Deal found 3/12$2,067
Fri 5/1217:35SYD - OPO
3 stops38h 50mMultiple Airlines
Thu 23/416:50OPO - SYD
3 stops33h 55mMultiple Airlines
Deal found 3/12$2,477
Fri 5/1211:10SYD - OPO
3 stops39h 15mKLM
Thu 23/416:20OPO - SYD
2 stops27h 50mKLM
Deal found 3/12$2,595
Best flights from Sydney to Porto
Discover carefully curated flight deals from Sydney to Porto that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 December 2025.
Sun 25/116:35SYD - OPO
2 stops29h 15mEtihad Airways
Tue 10/220:10OPO - SYD
2 stops47h 25mEtihad Airways
Deal found 4/12$1,530
Wed 4/315:50SYD - OPO
2 stops40h 25mQatar Airways
Sun 8/308:20OPO - SYD
2 stops35h 30mQatar Airways
Deal found 2/12$1,904
Sat 17/121:30SYD - OPO
2 stops35h 55mMultiple Airlines
Sat 24/111:25OPO - SYD
2 stops32h 05mMultiple Airlines
Deal found 3/12$2,008
Sun 25/115:55SYD - OPO
2 stops34h 30mKLM
Tue 10/216:10OPO - SYD
3 stops28h 15mKLM
Deal found 4/12$2,025
Sun 25/120:05SYD - OPO
3 stops36h 35mMultiple Airlines
Tue 10/218:00OPO - SYD
3 stops34h 30mMultiple Airlines
Deal found 4/12$2,104
Wed 4/309:45SYD - OPO
3 stops37h 00mAmerican Airlines
Sun 8/308:20OPO - SYD
2 stops36h 05mAmerican Airlines
Deal found 2/12$11,129
Last-minute flights from Sydney to Porto
Discover last-minute flight deals from Sydney to Porto. Data last updated 5 December 2025 and is based on user searches.
Fri 5/1221:30SYD - OPO
2 stops49h 35mEtihad Airways
Thu 23/416:05OPO - SYD
2 stops39h 55mEtihad Airways
Deal found 3/12$2,067
Fri 5/1217:35SYD - OPO
3 stops38h 50mMultiple Airlines
Thu 23/416:50OPO - SYD
3 stops33h 55mMultiple Airlines
Deal found 3/12$2,477
Fri 5/1211:10SYD - OPO
3 stops39h 15mKLM
Thu 23/416:20OPO - SYD
2 stops27h 50mKLM
Deal found 3/12$2,595
Sat 17/121:30SYD - OPO
2 stops35h 55mMultiple Airlines
Sat 24/111:25OPO - SYD
2 stops32h 05mMultiple Airlines
Deal found 3/12$2,008
Sun 25/116:35SYD - OPO
2 stops29h 15mEtihad Airways
Tue 10/220:10OPO - SYD
2 stops47h 25mEtihad Airways
Deal found 4/12$1,530
Sun 25/115:55SYD - OPO
2 stops34h 30mKLM
Tue 10/216:10OPO - SYD
3 stops28h 15mKLM
Deal found 4/12$2,025
Sun 25/120:05SYD - OPO
3 stops36h 35mMultiple Airlines
Tue 10/218:00OPO - SYD
3 stops34h 30mMultiple Airlines
Deal found 4/12$2,104
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 5 December 2025.
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 5 December 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
Sun 25/1
16:35-10:50
2 stops29h 15m
Porto
Tue 10/2
20:10-06:35
2 stops47h 25m
$1,530
SydneyPorto
SYD - OPO
SYDOPO
Sydney Kingsford Smith
Wed 4/3
15:50-21:15
2 stops40h 25m
Porto
Sun 8/3
08:20-06:50
2 stops35h 30m
$1,904
SydneyPorto
SYD - OPO
SYDOPO
Sydney Kingsford Smith
Sat 17/1
21:30-22:25
2 stops35h 55m
Porto
Sat 24/1
11:25-06:30
2 stops32h 05m
$2,008
SydneyPorto
SYD - OPO
SYDOPO
Sydney Kingsford Smith
Sun 25/1
15:55-15:25
2 stops34h 30m
Porto
Tue 10/2
16:10-07:25
3 stops28h 15m
$2,025
SydneyPorto
SYD - OPO
SYDOPO
Sydney Kingsford Smith
Sun 25/1
20:05-21:40
3 stops36h 35m
Porto
Tue 10/2
18:00-15:30
3 stops34h 30m
$2,104
SydneyPorto
SYD - OPO
SYDOPO
Sydney Kingsford Smith
Wed 4/3
09:45-11:45
3 stops37h 00m
Porto
Sun 8/3
08:20-07:25
2 stops36h 05m
$11,129
Flights are sorted by cheapest return flights first.
Deals found on 4/12
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 28 November 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 month to book a flight from Sydney to Porto?
Currently, February is the cheapest month in which you can book a flight from Sydney to Porto (average of $1,479). Flying from Sydney to Porto in December is currently the most expensive (average of $2,157). 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.
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 5 December 2025.
It’s optimal to fly from Sydney to Porto in the evening. By choosing this option you can save up to 14% 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.
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 5 December 2025.
Get a feel of what it's like to fly with KLM, 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.
Not literally sitting in the very last row in the middle
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, Qatar Airways, and KLM fly from Sydney to Porto in about 29h 15m. The time it takes to get you to your destination can typically vary by up to 11h 10m. Sydney and Porto are separated by a distance of 18057 km. Both multi-stop and direct flights can be found to your destination and back.
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 $1,277 on this airline. Additional options worth looking into are Etihad Airways and Turkish Airlines, starting at $1,443 and $1,646 round-trip. You may be able to fly from Sydney to Porto for 38% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Sydney to Porto one-way?
The cheapest airline one-way is Etihad Airways, with whom users have recently found tickets for as low as $935. However, be on the lookout for offers from Lufthansa and Turkish Airlines, as they are both options that can get you from Sydney to Porto for a low price.
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.
What is the cheapest month to book a flight from Sydney to Porto?
Currently, February is the cheapest month in which you can book a flight from Sydney to Porto (average of $1,479). Flying from Sydney to Porto in December is currently the most expensive (average of $2,157). 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.
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 5 December 2025.
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 5 December 2025.
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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