$46 Cheap Flights from Shannon (SNN) to Porto (OPO)

View $46 flight on Sun, Sep 28, 2025Opens in a new window

Popular airlines from Shannon Airport (SNN) to Porto Airport (OPO)

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Cheap Flights from Shannon to Porto (SNN-OPO)

Prices were available within the past 7 days and start at $46 for one-way flights and $101 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Ryanair
Sun, Aug 24 - Sun, Sep 7
SNN
Shannon
OPO
Porto
$101 Roundtrip, found 11 hours ago
$101
Roundtrip
found 11 hours ago
Select Ryanair flight, departing Sun, Aug 24 from Shannon to Porto, returning Sun, Sep 7, priced at $101 found 11 hours ago
Ryanair
Thu, Oct 16 - Thu, Oct 23
SNN
Shannon
OPO
Porto
$140 Roundtrip, found 12 hours ago
$140
Roundtrip
found 12 hours ago
Select Ryanair flight, departing Thu, Oct 16 from Shannon to Porto, returning Thu, Oct 23, priced at $140 found 12 hours ago
Ryanair
Thu, Oct 23 - Thu, Oct 30
SNN
Shannon
OPO
Porto
$163 Roundtrip, found 12 hours ago
$163
Roundtrip
found 12 hours ago
Select Ryanair flight, departing Thu, Oct 23 from Shannon to Porto, returning Thu, Oct 30, priced at $163 found 12 hours ago
Ryanair
Sun, Sep 28 - Sun, Oct 5
SNN
Shannon
OPO
Porto
$223 Roundtrip, found 12 hours ago
$223
Roundtrip
found 12 hours ago
Select Ryanair flight, departing Sun, Sep 28 from Shannon to Porto, returning Sun, Oct 5, priced at $223 found 12 hours ago
Ryanair
Sun, Aug 31 - Sun, Sep 7
SNN
Shannon
OPO
Porto
$236 Roundtrip, found 1 day ago
$236
Roundtrip
found 1 day ago
Select Ryanair flight, departing Sun, Aug 31 from Shannon to Porto, returning Sun, Sep 7, priced at $236 found 1 day ago
Ryanair
Sun, Oct 12 - Sun, Oct 19
SNN
Shannon
OPO
Porto
$237 Roundtrip, found 12 hours ago
$237
Roundtrip
found 12 hours ago
Select Ryanair flight, departing Sun, Oct 12 from Shannon to Porto, returning Sun, Oct 19, priced at $237 found 12 hours ago
Ryanair
Sun, Aug 24 - Thu, Aug 28
SNN
Shannon
OPO
Porto
$240 Roundtrip, found 2 days ago
$240
Roundtrip
found 2 days ago
Select Ryanair flight, departing Sun, Aug 24 from Shannon to Porto, returning Thu, Aug 28, priced at $240 found 2 days ago
Ryanair
Sun, Sep 7 - Sun, Sep 14
SNN
Shannon
OPO
Porto
$244 Roundtrip, found 1 day ago
$244
Roundtrip
found 1 day ago
Select Ryanair flight, departing Sun, Sep 7 from Shannon to Porto, returning Sun, Sep 14, priced at $244 found 1 day ago
Ryanair
Sun, Oct 5 - Sun, Oct 12
SNN
Shannon
OPO
Porto
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select Ryanair flight, departing Sun, Oct 5 from Shannon to Porto, returning Sun, Oct 12, priced at $257 found 1 day ago
British Airways
Sat, Nov 8 - Sat, Nov 15
SNN
Shannon
OPO
Porto
$466 Roundtrip, found 12 hours ago
$466
Roundtrip
found 12 hours ago
Select British Airways flight, departing Sat, Nov 8 from Shannon to Porto, returning Sat, Nov 15, priced at $466 found 12 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 $1,489
OPO
Dr. Francisco de Sa Carneiro
CheapestClosest
Average driving time to city center14 min
Flights from $1,489
Flights from Shannon (SNN) to Porto (OPO)
Origin airport
Shannon
Destination airport
Dr. Francisco de Sa Carneiro
Airlines serving
British Airways, Ryanair
Roundtrip price
$101
Distance
791 mi
Average flight time
2 hours 15 mins

Shannon to Porto Flights

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

 

The best time to book a flight from Shannon to Porto

Sunday is one of the best days to book for cheap flights from Shannon 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 Shannon 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 Shannon to Porto in 2025. You can also book with separate airlines for your outbound and return journeys, from $46 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 Shannon 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 Shannon 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.

 

Frequently asked questions

How much does a flight from Shannon Airport (SNN) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Find cheap return tickets from Shannon Airport (SNN) to Dr. Francisco de Sa Carneiro Airport (OPO) starting at $142. Snag a seat and get ready to go. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Ryanair flight leaving SNN on July 31 2025 and touching down at OPO. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SNN to OPO?
The cheapest flights from SNN to OPO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SNN to OPO?
With prices starting from $66 for a one-way flight from SNN to OPO, Ryanair is currently the cheapest carrier operating this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SNN on September 21 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Shannon Airport (SNN) to Dr. Francisco de Sa Carneiro Airport (OPO)?
There aren't any daily direct flights departing from Shannon Airport (SNN) to Dr. Francisco de Sa Carneiro Airport (OPO). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from SNN to OPO?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a range of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Shannon Airport (SNN) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Opt for a flight from Shannon Airport (SNN) to Dr. Francisco de Sa Carneiro Airport (OPO) that leaves before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.**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 Shannon Airport (SNN) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Last-minute bookings from SNN to OPO are typically more expensive. For the lowest prices, start looking for flights well ahead of time. That being said, if you can play around with your travel dates, it's possible to score a cheap fare right before your trip.
Is it cheaper to book a SNN to OPO flight and hotel package?
You can save money by securing a SNN to OPO flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've chosen your preferred flights and accommodations, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Shannon Airport (SNN) to Dr. Francisco de Sa Carneiro Airport (OPO)?
You can usually cancel or reschedule your SNN to OPO flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.