$644 Find Cheap Flights from Portugal to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Sydney departing on 27/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Sydney, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Portugal to Sydney

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Portugal to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Portugal to Sydney

ศ., 19 มิ.ย. - อา., 19 ก.ค.
Multiple Airlines Logo
10:00 - 18:25
LIS
-
SYD
47h 25m
2 stops
Multiple Airlines Logo
20:00 - 08:45
SYD
-
LIS
45h 45m
2 stops
$1,563Multiple Airlines
พฤ., 18 มิ.ย. - ส., 25 ก.ค.
Multiple Airlines Logo
16:05 - 18:25
LIS
-
SYD
41h 20m
2 stops
Multiple Airlines Logo
20:00 - 08:50
SYD
-
LIS
45h 50m
2 stops
$1,690Multiple Airlines
อ., 7 เม.ย. - อ., 14 เม.ย.
Multiple Airlines Logo
20:05 - 14:50
LIS
-
SYD
33h 45m
2 stops
Multiple Airlines Logo
19:40 - 23:20
SYD
-
LIS
36h 40m
2 stops
$1,702Multiple Airlines
ส., 2 พ.ค. - ศ., 15 พ.ค.
Multiple Airlines Logo
21:50 - 16:50
OPO
-
SYD
34h 00m
2 stops
Multiple Airlines Logo
11:25 - 13:15
SYD
-
OPO
34h 50m
2 stops
$1,725Multiple Airlines
ส., 2 พ.ค. - ศ., 15 พ.ค.
Multiple Airlines Logo
21:50 - 16:50
OPO
-
SYD
34h 00m
2 stops
Multiple Airlines Logo
11:25 - 13:15
SYD
-
OPO
34h 50m
2 stops
$1,726Multiple Airlines
ส., 2 พ.ค. - ศ., 15 พ.ค.
Multiple Airlines Logo
21:50 - 16:50
OPO
-
SYD
34h 00m
2 stops
Multiple Airlines Logo
11:25 - 13:15
SYD
-
OPO
34h 50m
2 stops
$1,729Multiple Airlines
พฤ., 9 เม.ย. - พ., 22 เม.ย.
Multiple Airlines Logo
22:40 - 16:50
LIS
-
SYD
33h 10m
2 stops
Multiple Airlines Logo
20:35 - 15:35
SYD
-
LIS
28h 00m
2 stops
$1,757Multiple Airlines
พฤ., 9 เม.ย. - พ., 22 เม.ย.
Multiple Airlines Logo
22:40 - 16:50
LIS
-
SYD
33h 10m
2 stops
Multiple Airlines Logo
13:00 - 15:35
SYD
-
LIS
35h 35m
2 stops
$1,790Multiple Airlines
พฤ., 30 เม.ย. - พ., 13 พ.ค.
British Airways Logo
09:55 - 06:05
OPO
-
SYD
35h 10m
2 stops
British Airways Logo
10:10 - 18:55
SYD
-
OPO
41h 45m
2 stops
$1,899British Airways
ส., 2 พ.ค. - ศ., 15 พ.ค.
British Airways Logo
10:40 - 06:25
OPO
-
SYD
34h 45m
2 stops
British Airways Logo
09:50 - 09:50
SYD
-
OPO
33h 00m
2 stops
$2,009British Airways
Booking Insights

KAYAK's insights & trends for flights to Sydney

Get data-powered insights and trends into flights to Sydney to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Sydney?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to Sydney was found on the route from Lisbon, at $1,563 return. The most popular connection is from Melbourne to Sydney and KAYAK users have found return deals for as low as $159 in the last 3 days.

What is the cheapest month to fly to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Sydney is September, where tickets cost $2,088 on average for return flights. On the other hand, the most expensive months are December and August, where the average cost of tickets from Portugal is $2,653 and $2,506 respectively. For one-way flights, the best month to travel is September with an average price of $2,088.

How far in advance should I book a flight to Sydney?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$644
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly (11% more expensive on average)
Flight from Lisbon to Sydney

FAQs - booking Sydney flights

  • What is the cheapest flight to Sydney?

    In the last 3 days, the cheapest flight deal to Sydney was found on the route from Lisbon, at $1,563 return. The most popular connection is from Melbourne to Sydney and KAYAK users have found return deals for as low as $159 in the last 3 days.

  • How far is Sydney Kingsford Smith Airport from central Sydney?

    The distance between Sydney Kingsford Smith Airport and the city centre of Sydney is 7 km.

  • What is the name of Sydney’s airport?

    When flying to Sydney, you'll arrive at Sydney Kingsford Smith Airport (SYD). The airport is also known as Kingsford Smith or Sydney.

  • How does KAYAK find such low prices on flights to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sydney with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Sydney are there each week?

    Each week there are around 2,638 direct flights from within Portugal to Sydney. The most common day for departures is Friday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to Sydney

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Sydney flight deals.

Reviews of the top airlines flying from Portugal to Sydney

 
See real verified KAYAK customer reviews for airlines flying to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to Sydney. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Air FranceOverall score based on 1543 reviews
7.3Comfort
7.0Entertainment
8.1Crew
7.0Food
7.4Boarding
Airline reviews

The boarding was efficient. The entertainment system was a bit unstable but Air France has a good selection of movies.

8.0 ExcellentAnonymous, Mar 2026
CPT - CDG
Read more Air France reviews

The boarding was efficient. The entertainment system was a bit unstable but Air France has a good selection of movies.

They lost my bag and I still haven’t received it yet

They lost my bag and I still have not received it

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

Not consistent with the food quality (I mean taste not freshness)

Safe and stable made me sleepy and I slept and dreamt 😂😂😂😂

Food was really mediocre for premium economy in comparison to other airlines… the crew was nowhere to be found… 14 hour flight…

I don’t like that an equipment change caused my seat to change from 23A to 44A. The boarding was also delayed. The crew were excellent, however and very attentive. The food was not bad.

Worst airlines either. First leg was delayed because of crew not available. My connection was missed so they booked me automatically the next day! But, impossible to get anyone on site, web site does not let me access my reservation anymore, confirmed by useless agents over the phone. My 2-leg trip with part in business class arriving at 4:10pm ends up in an awful 3-leg arriving at 9pm the next day with no way to even choose the seats and of course at the very end of the plane. I can understand problems arrive but the way Air France handle it is just unacceptable. You are on your own. Apparently getting you to your destination is the only thing they consider their duty. The customer experience and fatigue is none of their concern. And I have a status with them. I will reconsider my priorities when flying with Air France and encourage everyone to do the same.

Excellent, Lima to Paris. But Paris to Amsterdam, delayed, missed my flight and KLM treated its missed flights passengers very badly, terribly bad. No hotel accommodation given. Passengers were told to find their own hotel accommodation and claim at reasonable rate and left the booth and literally with armed Police Officers listening to passengers complains. For three hours, after moving by Uber from hotel to hotel and calling and booking online, no hotel was available. I had to return to the airport and seat/sleep on the benches, suffering the cold, and rats running around until my new allocated flight the next day. It was the most terrible KLM treatment even seen and being a Business Class passenger. Still mentally suffering to date as a result.

It was excellent service in the snow storm gives us hotel and transportation. It will be more better if u can add one more meal because it’s a long flight boring journey. If you give extra meal time passes faster and can enjoy the trip better

Food quality and varites were very minimum. Surprised to have no desserts. Business class tickets should have lounge access and seats selection. They should be allowed to board while people with wheel chair, secial assistance and family with childrem.

Business class ticket should include lounge access and seat selection. The food quality and varieties should be more. It was surpirise that no dessert was offered.

Dear Team, I purchased a full travel package that included 2 checked bags through you and JustFly. However, when I arrived at the airport, my ticket showed 0 checked bags. Since I was traveling internationally to India with 2 bags, It was a $200 per bag at the counter, which was extremely disappointing. For an international trip, why would I ever choose a no‑bag option for only $20–$30 less? This seems like an error in the booking process, and I am requesting clarification and a resolution. I have called JustFly and on phone for 1 hr :53 min and they couldn't help till I show some kind of proof etc which isn't possible but besides that love your service and using it for years !

I liked the crew, the food and the foot space. I did not like the comfort of the seats.

Early arrival. Good boarding. Deplaning this flight is very slow both coming and going. Baggage arrived quickly for Pearson

The crew could have been more friendly and could have offered to make the beds. Also, Ethiad should have more vegetarian food options.

It was mediocre. Honestly, the flight was late but that didn’t bother me as I had plenty of time. The only thing that bothered me is that the crew never asked to make the beds for us in business class. Maybe the crew was exhausted and that just didn’t occur to them.

Kayak and Aran grant issuing business class tickets without lounge access and sometimes 1 or 2 connections in economy class. It’s very disappointing to find out that after buying the ticket. Never buy tickets on kayak and Aran grant again

We have paid premium price for a business class Cabinet and we have received the old 777 with the following apart business class that is not to standard. It was very disappointing and it’s a very bad reputation for a premium airline company. This aeroplane should be the commission from being as a business class. We will pass this knowledge to our colleagues because the quality of business class in Etihad is not consistent and it is a lucky dip that sometimes you’re getting a good aeroplane and sometimes you’re getting their 30 years old aeroplane. The crew of the aeroplane have apologise and said that they hate this aeroplane and they have complained about it multiple times as well. Obviously Etihad is putting the economy in front of the Customer Experience. For the future we will not take this risk anymore and will fly with established company like emirates.

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
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Terrigal
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Everything you need to know for your flight to Sydney

Information on the airport you'll fly into in Sydney