$445 Cheap Flights from Singapore (SIN) to Porto (OPO)

View $445 flight on Mon, Jul 27, 2026Opens in a new window

Popular airlines from Singapore Changi Airport (SIN) to Porto Airport (OPO)

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Cheap Flights from Singapore to Porto (SIN-OPO)

Prices were available within the past 7 days and start at $445 for one-way flights and $779 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Mon, Jul 27 - Tue, Aug 11
SIN
Singapore
OPO
Porto
$779 Roundtrip, found 2 days ago
$779
Roundtrip
found 2 days ago
Select Etihad Airways flight, departing Mon, Jul 27 from Singapore to Porto, returning Tue, Aug 11, priced at $779 found 2 days ago
Etihad Airways
Mon, Jul 27 - Tue, Aug 11
SIN
Singapore
OPO
Porto
$791 Roundtrip, found 2 days ago
$791
Roundtrip
found 2 days ago
Select Etihad Airways flight, departing Mon, Jul 27 from Singapore to Porto, returning Tue, Aug 11, priced at $791 found 2 days ago
Etihad Airways
Sat, Jul 25 - Thu, Aug 6
SIN
Singapore
OPO
Porto
$818 Roundtrip, found 6 days ago
$818
Roundtrip
found 6 days ago
Select Etihad Airways flight, departing Sat, Jul 25 from Singapore to Porto, returning Thu, Aug 6, priced at $818 found 6 days ago
Etihad Airways
Mon, Jul 27 - Tue, Aug 11
SIN
Singapore
OPO
Porto
$822 Roundtrip, found 2 days ago
$822
Roundtrip
found 2 days ago
Select Etihad Airways flight, departing Mon, Jul 27 from Singapore to Porto, returning Tue, Aug 11, priced at $822 found 2 days ago
Etihad Airways
Thu, Jul 23 - Fri, Aug 7
SIN
Singapore
OPO
Porto
$830 Roundtrip, found 6 days ago
$830
Roundtrip
found 6 days ago
Select Etihad Airways flight, departing Thu, Jul 23 from Singapore to Porto, returning Fri, Aug 7, priced at $830 found 6 days ago
Etihad Airways
Mon, Jul 27 - Tue, Aug 11
SIN
Singapore
OPO
Porto
$834 Roundtrip, found 2 days ago
$834
Roundtrip
found 2 days ago
Select Etihad Airways flight, departing Mon, Jul 27 from Singapore to Porto, returning Tue, Aug 11, priced at $834 found 2 days ago
Qatar Airways
Tue, Jun 2 - Tue, Jun 23
SIN
Singapore
OPO
Porto
$911 Roundtrip, found 5 hours ago
$911
Roundtrip
found 5 hours ago
Select Qatar Airways flight, departing Tue, Jun 2 from Singapore to Porto, returning Tue, Jun 23, priced at $911 found 5 hours ago
Air France
Wed, May 20 - Wed, Jun 3
SIN
Singapore
OPO
Porto
$1,026 Roundtrip, found 5 hours ago
$1,026
Roundtrip
found 5 hours ago
Select Air France flight, departing Wed, May 20 from Singapore to Porto, returning Wed, Jun 3, priced at $1,026 found 5 hours ago
Turkish Airlines
Tue, Jun 2 - Tue, Jun 23
SIN
Singapore
OPO
Porto
$1,151 Roundtrip, found 5 hours ago
$1,151
Roundtrip
found 5 hours ago
Select Turkish Airlines flight, departing Tue, Jun 2 from Singapore to Porto, returning Tue, Jun 23, priced at $1,151 found 5 hours ago
KLM
Tue, May 19 - Thu, May 28
SIN
Singapore
OPO
Porto
$1,274 Roundtrip, found 5 hours ago
$1,274
Roundtrip
found 5 hours ago
Select KLM flight, departing Tue, May 19 from Singapore to Porto, returning Thu, May 28, priced at $1,274 found 5 hours ago

Alternative airports near Porto

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Dr. Francisco de Sa Carneiro OPO. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $913
OPO
Dr. Francisco de Sa Carneiro
CheapestClosest
Average driving time to city center14 min
Flights from $913

Frequently asked questions

How much does a flight from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro) cost?
You can find cheap one-way flights and cheap return flights from $779 Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro) with Expedia. One-way flights generally range between $608 and $4236, and roundtrip flights usually range from $1092 to $7967. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro)?
The cheapest month to fly from SIN to OPO is July when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro)?
Enter SIN to OPO and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro)?
Juneyao Airlines is one of the cheapest airlines offering connecting flights from Singapore (SIN) to Porto (OPO) with a layover in Pudong Intl. starting from around $1,348. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro)?
To find a cheap flight from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro)?
The earliest flight from Changi Airport (SIN) to Dr. Francisco de Sa Carneiro Airport (OPO) typically departs at around 12:05 AM, operated by Swiss International Air Lines and Helvetic Airways. This seasonal service is available in December, making it a convenient choice for late-night travelers heading to Porto. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro)?
When flying from Singapore (SIN) to Porto (OPO), the most popular departure times are in the late evening, from 9pm to midnight. This time window captures around 47% of total traffic, as many travelers prefer to depart late and arrive at their destination the next day. Major airlines like Lufthansa, Emirates, and Vueling operate flights during this period.
How long does it take to fly from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro)?
Flying from SIN to OPO with a connection usually takes about 18 hours 30 minutes, traveling roughly 7,318 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro)?
Business class is available on flights from SIN to OPO. Airlines that offer business class service on this route include:

  • Turkish Airlines
  • Emirates
  • Etihad Airways
  • Air India
  • Lufthansa
  • Thai Airways International
  • Qatar Airways
  • Swiss International Air Lines
  • Malaysia Airlines
  • Air France

First class cabins are available on:

  • Emirates
  • Swiss International Air Lines
  • Singapore Airlines

How do I earn miles on a Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro) flight with Expedia?
It's easy to earn miles on a Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Porto from Changi (SIN)?
If you're planning to travel to Porto from Changi (SIN), you can fly into Dr. Francisco de Sa Carneiro (OPO) Some flights may connect through major hubs like Dubai Intl. (DXB), Suvarnabhumi Intl. (BKK), Hamad Intl. (DOH) before reaching Porto. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro) at the last minute?
Typically, booking a last minute flight from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro) flight and hotel package?
Securing a Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro) Porto Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro)?
If you booked your Singapore (SIN-Changi) to Porto (OPO-Dr. Francisco de Sa Carneiro) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Changi
Destination airport
Dr. Francisco de Sa Carneiro
Roundtrip price
$778
Distance
7316 mi

Book with confidence

Singapore to Porto Flights

The cheapest times to fly from Singapore to Porto

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 Singapore to Porto are during the month of July. You can find some of the cheapest flights from Singapore to Porto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Singapore to Porto

Sunday is one of the best days to book for cheap flights from Singapore to Porto: 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 Singapore to Porto

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 Singapore to Porto in 2026. You can also book with separate airlines for your outbound and return journeys, from $445 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 Singapore to Porto 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 Singapore to Porto 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.

 

Singapore to Porto Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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