SIN - OPO

S$ 509 Find Cheap Flights from Singapore to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Singapore to Porto departing on 24-8. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Singapore to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Singapore to Porto, as well as popular online travel agencies
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Cheap Flights from Singapore to Porto (SIN-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Singapore to Porto 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 Singapore to Porto

Wed, 26 Nov - Sat, 6 Dec
Air France Logo
22:55 - 10:50SIN-OPO
19h 55m1 stop
Air France Logo
11:45 - 16:55OPO-SIN
21h 10m1 stop
S$ 993Air France
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Thu, 26 Jun - Wed, 9 Jul
Turkish Airlines Logo
10:15 - 09:45SIN-OPO
30h 30m1 stop
Turkish Airlines Logo
16:50 - 17:55OPO-SIN
18h 05m1 stop
S$ 1,060Turkish Airlines
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Wed, 25 Jun - Wed, 9 Jul
Etihad Airways Logo
21:10 - 19:20SIN-OPO
29h 10m2 stops
Etihad Airways Logo
16:05 - 09:40OPO-SIN
34h 35m2 stops
S$ 1,109Etihad Airways
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Wed, 26 Nov - Sat, 6 Dec
 Logo
22:55 - 15:25SIN-OPO
24h 30m2 stops
 Logo
11:45 - 16:55OPO-SIN
21h 10m1 stop
S$ 1,138
Find Deal
Wed, 25 Jun - Wed, 9 Jul
Etihad Airways Logo
21:10 - 15:15SIN-OPO
25h 05m2 stops
Etihad Airways Logo
16:05 - 09:40OPO-SIN
34h 35m2 stops
S$ 1,155Etihad Airways
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Wed, 26 Nov - Sat, 6 Dec
 Logo
17:00 - 14:10SIN-OPO
29h 10m2 stops
 Logo
20:10 - 15:35OPO-SIN
35h 25m2 stops
S$ 1,158
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Sat, 6 Sep - Thu, 25 Sep
SWISS Logo
23:30 - 11:30SIN-OPO
19h 00m1 stop
SWISS Logo
08:40 - 17:05OPO-SIN
25h 25m1 stop
S$ 1,166SWISS
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Tue, 25 Nov - Sat, 6 Dec
SWISS Logo
00:05 - 13:25SIN-OPO
21h 20m2 stops
SWISS Logo
10:40 - 17:50OPO-SIN
47h 10m2 stops
S$ 1,210SWISS
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Sat, 6 Sep - Thu, 25 Sep
Lufthansa Logo
23:40 - 22:45SIN-OPO
30h 05m1 stop
Lufthansa Logo
11:05 - 16:40OPO-SIN
22h 35m1 stop
S$ 1,220Lufthansa
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Wed, 25 Jun - Wed, 9 Jul
Lufthansa Logo
23:25 - 11:20SIN-OPO
18h 55m2 stops
Lufthansa Logo
11:10 - 16:40OPO-SIN
22h 30m1 stop
S$ 1,330Lufthansa
Find Deal
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KAYAK's insights & trends for Singapore to Porto flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Singapore to Porto, 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 from Singapore to Porto is March, where tickets cost S$ 983 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is S$ 2,272 and S$ 1,681 respectively.


Good to know

Low seasonJanuary
High seasonNovember
Cheapest flightS$ 509
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly and prices are also 3% lower on average.
Flight from Singapore to Porto

When to book flights from Singapore to Porto

Are your dates flexible? Find out the best times to travel from Singapore to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Singapore to Porto

  • What is the cheapest flight from Singapore to Porto?

    In the last 3 days, the lowest price for a flight from Singapore to Porto was S$ 398 for a one-way ticket and S$ 776 for a return.

  • Which aircraft models fly most regularly from Singapore to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Singapore to Porto?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Singapore and Porto, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Singapore to Porto, SWISS or Turkish Airlines?

    The two airlines most popular with KAYAK users for flights from Singapore to Porto are SWISS and Turkish Airlines. With an average price for the route of S$ 1,169 and an overall rating of 7.5, SWISS is the most popular choice. Turkish Airlines is also a great choice for the route, with an average price of S$ 1,196 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Singapore to Porto?

    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 from Singapore to Porto.

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

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

  • What is the Hacker Fare option on flights from Singapore to Porto?

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

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

    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 Porto from Singapore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 3 airlines serving from Singapore to Porto

 
See real verified KAYAK customer reviews for airlines flying from Singapore to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Singapore to Porto? 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.
7.5
SWISSOverall score based on 1623 reviews
7.6Boarding
7.4Comfort
6.7Entertainment
7.0Food
8.2Crew
Airline reviews

The meal was wonderful and strawberry ice cream was a plus.

8.0 ExcellentAnonymous, Jun 2025ZRH - ORD
Read more SWISS reviews

The meal was wonderful and strawberry ice cream was a plus.

Each flight we took was late with little or no updates or information.

All the flight to USA were arranged to E terminal whereas from Dubrovnik arriving on Zurich is on A80, have to walk all the way from A to E, even need transfer bus , for short transfer time like in an hour, we have to work fast, as soon as arrived at E, it is about time to boarding, pretty tight schedule, I hope Zurich airport can make some rearrangement so that transfer people do not have to walk long way. For short transfer time people, such as 50 min, this is even impossible if still like this.

They didn't give us Nothing to eat, come on..... 1 package of chips and a glass of soda won't do anything to the company

The cushion of the seats are old and very thin. The food can be more tasty or come with salt packages

The biggest let down was with booking experience through Kayak. I booked a flight with checked bags on Kayak. Right away I got a message from travel agency that the flight is not confirmed and to call them. I called them and they said the flight I have booked is no longer available with the price I have booked it for and I can book it with about $100 more. I already had other options I could book with cheaper price so I asked them to cancel my booking. Then they said I can have the ticket with the same price but a date change which was not working for me as I had to be there for a seminar. So again I said no then they said they will cover the charges and confirm my flight. When comes time for check-in I see I have no checked bag option which means the travel agency deceived me saying I can have my booking as I had booked it. And at that point I ended up paying $155 for my checked bag going back and forth. I am extremely angry and unhappy with this experience

I haven't flown Swiss in a long time. I was disappointed that after paying $14,907 for 3 business class seats, we still had to pay another $200 for a single business class seat. All the window seats used to be single seats. Now it's every other one and if you want a single seat it's extra. Also, The double seats do not have pods or any privacy. We landed in Chicago after a long 10 hour flight and our connecting flight was on United. Because we do not have status on Swiss, we were not allowed to use the United lounge, even with business class seats. My father is on crutches and we had a 4 hour layover. No lounge was also disappointing. All of my status is on British Airways so I will go back to flying BA. We flew Swiss because my father did not want to go through Heathrow. On a positive, the crew were super nice and accommodating for my father who had recently had hip replacement surgery. Food was okay. I"m not a good person to critique the food, I never like airplane food.

I took this flight to be able to fly with Swiss instead of Air Canada from Geneva.. The AC planes have a better outfit in Business class than Swiss, but the service aboard Swiss is really best, first-class, as is the food and beverages. Though using the same plane model (A330-300), the interior setup of the cabin starts to show its age, but IMO the planes are better serviced by Swiss than AC. I had in my recent trips with AC way too many technical problems that led to delays or even complete cancellation of my flight.. Their fleet is aging (average 20+ years) and the maintenance has taken a toll compared to years ago. Cutting costs in every corner has to be paid sometime by someone, and it's the travelers at the end that pays for it. Unfortunately for me, flying directly to Zurich puts a much longer after-fly trip on me than Geneva.. so I might go back to direct flight YUL-GVA, even if I don't like flying with AC.

Nothing special.. they could have provided something to eat without a charge

Crammed like sardines into the middle of the middle 4 seat row for an 11 hour flight was a terrible experience. No attempt made to help passengers sleep by dimming lights or shutting window shades. Small mediocre meals. Not enough good movies/TV options. Hopefully we will never have to do this again.

This flight was in the air when the national power outage happened on 28 April 2025 in Spain and Portugal. As a result Lisbon airport was closed and the flight was diverted to Porto. There were no phones, internet or ATMs working and the Turkish Airlines ground crew in Porto were trying to find alternative transport to Lisbon (by bus). This did not materialise until late in the evening. The Turkish Airlines ground crew suggested that passengers may find their own way of getting to Lisbon. That in itself is a failure of Turkish Airlines, but understandable as there were no means of communication. The Turkish Airlines ground crew also said that any expenses insured for travel to Lisbon will be refunded by the Airline through their website. Unfortunately, I could find no way to travel back to Lisbon other than to hitch hike with an Uber driver. Because no systems were available and no credit card payment possible I paid the driver 140 Euros in cash with no receipt as systems were down. I arrived at my Lisbon hotel at 23:30 (flight was scheduled to land at 12:30). Upon contacting Turkish Airlines for compensation they are not willing to do anything as I do not have an invoice for my expenses. They do not even consider the 10 hours of delay and inactivity on their part as a reason to provide any sort of curtesy towards me. I find their behaviour appalling.

Flight Singapore - Istanbul was perfect. Flight Istanbul - Sao Paolo - Buenos Aires was really good but there was a big delay in Sao Paolo (Brazil) due to a problem with the ground staff and not related to Turkish Airline. Overall a very good and solid experience

The seat 7A had no padding. I needed to sit on the provided pillow.

Turkish Airlines overbooked the flight and they did not allow me to board the flight even though I had the proper boarding pass and was at the gate on time. Simply unacceptable.

The fully flat bed in business class on the 777 is a little narrow, and the 2-3-2 configuration is now dated, but otherwise a comfortable and pleasant flight. It’s hard to beat the value too.

Boarding was chaotic. Cabin noisy. Temperature a bit cool. Bathrooms not cleaned enough.

The trip had a 19 hour layover, and no hotel accommodation was provided. This a shame for an airline to do to their customers. I will not only stop flying with Turkish Airlines, I will make sure anyone I know avoid Turkish Airlines because of how lousy their layover system is.

Their weakness is in boarding. Business class rarely boards first and there are no announcements explaining delays, so customers are always left waiting and wondering why boarding has paused.

The flight was delayed so connection was missed. In Istanbul we were taken to a hotel and no one in the hotel knew so we had to wait hours in the lobby of the hotel while the airline and hotel coordinated. The airline staff is rude at times

Very good except the boarding process too forever and wasn’t organized by group. I had a heavy pack or I wouldn’t have minded. I was in business. There were no audible announcements in the waiting area about boarding and everyone packed into the boarding area. Then boarding stopped for a long time but the staff made no announcements to update waiting passengers about the holdup. The flight was good after we got on.

I've yet to be on an Air Dolomiti flight that hasn't been delayed, but other than that I've really enjoyed flying with them

They lost my luggage and despite all follow ups through emails and phone calls they don’t give me an update

Service was courteous and attentive. Sat in the exit row. In exchange for leg room I had people tripping over my feet to use it at a hallway from one aisle to the other, had no access to films viaa viewscreen and no underseat storage for medicines or other personal travel needs. Next time I am seated there, I will refuse the exit row.

New and clean plane, lots of entertainment on IFE. Boarding was chaotic, maybe because of the size of the gate area. Plane arrived half an hour late.

Great crew dealing with the most unprepared family with a million kids and zero sense.

We were delayed taking off which caused us to miss the connection to Orlando in Frankfurt. The gate we landed at in Frankfurt was in A terminal and the next flight was c15 which was impossible to get to even running. Very poor planning on Lufthansa’s part.

Seats were very small and of poor quality. Service was good.

I was expecting better from Lufthansa. I’ll think twice before I book Lufthansa again. This trip was the worst ever… in my 70 years of traveling.

Problems checking in. Charged for bag which was to be included. Repeated trials with in line check in process

The flight was cold, no enough blanket and the crew said that they can’t change it. I got very sick in the flight . Most of the kids were coughing.

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