$370 Cheap Flights from Southampton (SOU) to Porto (OPO)

View $370 flight on Sun, Nov 9, 2025Opens in a new window

Popular airlines from Southampton (SOU) to Porto Airport (OPO)

Cheap Flights from Southampton to Porto (SOU-OPO)

Prices were available within the past 7 days and start at $370 for one-way flights and $513 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Sat, Apr 25 - Fri, May 22
SOU
Southampton
OPO
Porto
$513 Roundtrip, found 1 day ago
$513
Roundtrip
found 1 day ago
Select KLM flight, departing Sat, Apr 25 from Southampton to Porto, returning Fri, May 22, priced at $513 found 1 day ago
KLM
Sat, Apr 25 - Fri, May 22
SOU
Southampton
OPO
Porto
$529 Roundtrip, found 1 day ago
$529
Roundtrip
found 1 day ago
Select KLM flight, departing Sat, Apr 25 from Southampton to Porto, returning Fri, May 22, priced at $529 found 1 day ago
KLM
Sat, Apr 25 - Fri, May 22
SOU
Southampton
OPO
Porto
$551 Roundtrip, found 1 day ago
$551
Roundtrip
found 1 day ago
Select KLM flight, departing Sat, Apr 25 from Southampton to Porto, returning Fri, May 22, priced at $551 found 1 day ago
KLM
Sat, Apr 25 - Fri, May 22
SOU
Southampton
OPO
Porto
$567 Roundtrip, found 1 day ago
$567
Roundtrip
found 1 day ago
Select KLM flight, departing Sat, Apr 25 from Southampton to Porto, returning Fri, May 22, priced at $567 found 1 day ago
KLM
Sat, Apr 25 - Fri, May 22
SOU
Southampton
OPO
Porto
$576 Roundtrip, found 1 day ago
$576
Roundtrip
found 1 day ago
Select KLM flight, departing Sat, Apr 25 from Southampton to Porto, returning Fri, May 22, priced at $576 found 1 day ago
KLM
Sat, Apr 25 - Fri, May 22
SOU
Southampton
OPO
Porto
$592 Roundtrip, found 1 day ago
$592
Roundtrip
found 1 day ago
Select KLM flight, departing Sat, Apr 25 from Southampton to Porto, returning Fri, May 22, priced at $592 found 1 day ago
KLM
Sat, Apr 25 - Fri, May 22
SOU
Southampton
OPO
Porto
$616 Roundtrip, found 1 day ago
$616
Roundtrip
found 1 day ago
Select KLM flight, departing Sat, Apr 25 from Southampton to Porto, returning Fri, May 22, priced at $616 found 1 day ago
KLM
Sat, Apr 25 - Fri, May 22
SOU
Southampton
OPO
Porto
$619 Roundtrip, found 1 day ago
$619
Roundtrip
found 1 day ago
Select KLM flight, departing Sat, Apr 25 from Southampton to Porto, returning Fri, May 22, priced at $619 found 1 day ago
KLM
Sat, Apr 25 - Fri, May 22
SOU
Southampton
OPO
Porto
$635 Roundtrip, found 1 day ago
$635
Roundtrip
found 1 day ago
Select KLM flight, departing Sat, Apr 25 from Southampton to Porto, returning Fri, May 22, priced at $635 found 1 day ago
British Airways
Fri, Apr 24 - Thu, May 21
SOU
Southampton
OPO
Porto
$823 Roundtrip, found 1 day ago
$823
Roundtrip
found 1 day ago
Select British Airways flight, departing Fri, Apr 24 from Southampton to Porto, returning Thu, May 21, priced at $823 found 1 day ago

Frequently asked questions

How much does a flight from Southampton Airport (SOU) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Grab a cheap one-way flight from $370 or cheap return flight from $513 from Southampton Airport (SOU) to Dr. Francisco de Sa Carneiro Airport (OPO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Southampton Airport (SOU) to Dr. Francisco de Sa Carneiro Airport (OPO)?
The cheapest month to fly from SOU to OPO is April, when demand is low. Off-peak season is often when airlines offer better prices between these airports.
What is the cheapest airline that flies from Southampton Airport (SOU) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll fly you from SOU to OPO. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Southampton Airport (SOU) to Dr. Francisco de Sa Carneiro Airport (OPO)?
You'll need to hop on a flight with a layover if you're traveling from Southampton Airport (SOU) to Dr. Francisco de Sa Carneiro Airport (OPO). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from SOU to OPO?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on various factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Southampton Airport (SOU) to Dr. Francisco de Sa Carneiro Airport (OPO)?
To arrive at Dr. Francisco de Sa Carneiro Airport (OPO) on time, book a flight that leaves from Southampton Airport (SOU) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Southampton Airport (SOU) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Holding off until just before your departure to book a flight from SOU to OPO often results in higher prices. While it's possible to find some last-minute discounts, they're not always guaranteed. Be flexible with your travel plans for a better chance of snagging a bargain.
Is it cheaper to book a SOU to OPO flight and hotel package?
Securing a SOU to OPO flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our impressive range of hotels and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Southampton Airport (SOU) to Dr. Francisco de Sa Carneiro Airport (OPO)?
In most cases, you can reschedule or cancel your SOU to OPO flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you'd like further information, go to our Customer Service portal.

Travel information

Origin airport
Southampton
Destination airport
Dr. Francisco de Sa Carneiro
Roundtrip price
$512
Distance
756 mi

Book with confidence

Southampton to Porto Flights

The cheapest times to fly from Southampton 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 Southampton to Porto are during the month of April. You can find some of the cheapest flights from Southampton to Porto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Southampton to Porto

Sunday is one of the best days to book for cheap flights from Southampton 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 Southampton 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 Southampton to Porto in 2025. You can also book with separate airlines for your outbound and return journeys, from $370 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 Southampton 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 Southampton 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.

 

Southampton to Porto Flights

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*Available to One Key members.