Cheap Flights from San Francisco (SFO) to Portimao (PRM)

Popular airlines from San Francisco Intl. Airport (SFO) to Portimao (PRM)

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Portimao (PRM) cost?
Lock in a cheap one-way flight or cheap return flight from San Francisco Intl. Airport (SFO) to Portimao (PRM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Portimao (PRM)?
Flying in may help you find better deals, as it's the cheapest month for flights between SFO and PRM. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Portimao (PRM)?
To find the cheapest airline that'll fly you from SFO to PRM, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from San Francisco Intl. Airport (SFO) to Portimao (PRM)?
You'll have to book a flight with a layover if you're traveling from San Francisco Intl. Airport (SFO) to Portimao (PRM). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SFO to PRM?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* However, this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Portimao (PRM)?
To touch down at Portimao (PRM) on schedule, select a flight that leaves from San Francisco Intl. Airport (SFO) 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 San Francisco Intl. Airport (SFO) to Portimao (PRM) last-minute?
Waiting until just before your trip to book a ticket from SFO to PRM generally means paying more. Although you may find some last-minute offers, they aren't always guaranteed. Allow some flexibility in your schedule for the best chance of scoring a bargain.
Is it cheaper to book a SFO to PRM flight and hotel package?
You'll generally save money by securing a SFO to PRM flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After choosing your ideal flights and accommodations, you can add extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Portimao (PRM)?
You can usually reschedule or cancel your SFO to PRM flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check 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.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Portimao
Distance
5766 mi

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San Francisco to Portimao Flights

The cheapest times to fly from San Francisco to Portimao

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

 

The best time to book a flight from San Francisco to Portimao

Sunday is one of the best days to book for cheap flights from San Francisco to Portimao: 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 San Francisco to Portimao

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 San Francisco to Portimao in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 San Francisco to Portimao 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 San Francisco to Portimao 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.

 

San Francisco to Portimao Flights

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*Available to One Key members.