$409 Cheap Flights from Sal Island (SID) to Boston (BOS)

View $409 flight on Thu, Oct 9, 2025Opens in a new window

Popular airlines from Sal Island (SID-Amilcar Cabral Intl.) to Logan International Airport (BOS)

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Cheap Flights from Sal Island to Boston (SID-BOS)

Prices were available within the past 7 days and start at $409 for one-way flights and $689 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Wed, Sep 10 - Tue, Sep 30
SID
Sal
BOS
Boston
$689 Roundtrip, found 4 days ago
$689
Roundtrip
found 4 days ago
Select TAP Portugal flight, departing Wed, Sep 10 from Sal to Boston, returning Tue, Sep 30, priced at $689 found 4 days ago
TAP Portugal
Thu, Dec 11 - Sat, Jan 17
SID
Sal
BOS
Boston
$692 Roundtrip, just found
$692
Roundtrip
just found
Select TAP Portugal flight, departing Thu, Dec 11 from Sal to Boston, returning Sat, Jan 17, priced at $692 just found
TAP Portugal
Thu, Feb 12 - Thu, Mar 5
SID
Sal
BOS
Boston
$699 Roundtrip, found 23 hours ago
$699
Roundtrip
found 23 hours ago
Select TAP Portugal flight, departing Thu, Feb 12 from Sal to Boston, returning Thu, Mar 5, priced at $699 found 23 hours ago
TAP Portugal
Wed, Sep 10 - Tue, Sep 30
SID
Sal
BOS
Boston
$744 Roundtrip, found 4 days ago
$744
Roundtrip
found 4 days ago
Select TAP Portugal flight, departing Wed, Sep 10 from Sal to Boston, returning Tue, Sep 30, priced at $744 found 4 days ago
TAP Portugal
Thu, Dec 11 - Tue, Jan 6
SID
Sal
BOS
Boston
$756 Roundtrip, found 6 days ago
$756
Roundtrip
found 6 days ago
Select TAP Portugal flight, departing Thu, Dec 11 from Sal to Boston, returning Tue, Jan 6, priced at $756 found 6 days ago
TAP Portugal
Wed, Sep 10 - Tue, Sep 30
SID
Sal
BOS
Boston
$759 Roundtrip, found 4 days ago
$759
Roundtrip
found 4 days ago
Select TAP Portugal flight, departing Wed, Sep 10 from Sal to Boston, returning Tue, Sep 30, priced at $759 found 4 days ago
TAP Portugal
Thu, Dec 11 - Sat, Jan 17
SID
Sal
BOS
Boston
$762 Roundtrip, just found
$762
Roundtrip
just found
Select TAP Portugal flight, departing Thu, Dec 11 from Sal to Boston, returning Sat, Jan 17, priced at $762 just found
TAP Portugal
Sun, Feb 1 - Tue, Feb 10
SID
Sal
BOS
Boston
$764 Roundtrip, found 2 days ago
$764
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Sun, Feb 1 from Sal to Boston, returning Tue, Feb 10, priced at $764 found 2 days ago
Swiss International Air Lines
Thu, Dec 11 - Sat, Jan 17
SID
Sal
BOS
Boston
$914 Roundtrip, just found
$914
Roundtrip
just found
Select Swiss International Air Lines flight, departing Thu, Dec 11 from Sal to Boston, returning Sat, Jan 17, priced at $914 just found
Lufthansa
Thu, Dec 11 - Sat, Jan 17
SID
Sal
BOS
Boston
$1,420 Roundtrip, just found
$1,420
Roundtrip
just found
Select Lufthansa flight, departing Thu, Dec 11 from Sal to Boston, returning Sat, Jan 17, priced at $1,420 just found
Flights from Sal Island (SID) to Boston (BOS)
Origin airport
Amilcar Cabral Intl.
Destination airport
Logan Intl.
Airlines serving
Lufthansa, Swiss International Air Lines, TAP Portugal
Roundtrip price
$688
Distance
3328 mi

Sal Island to Boston Flights

The cheapest times to fly from Sal Island to Boston

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 Sal Island to Boston are during the month of September. You can find some of the cheapest flights from Sal Island to Boston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sal Island to Boston

Sunday is one of the best days to book for cheap flights from Sal Island to Boston: 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 Sal Island to Boston

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 Sal Island to Boston in 2025. You can also book with separate airlines for your outbound and return journeys, from $409 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 Sal Island to Boston 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 Sal Island to Boston 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 Amilcar Cabral Intl. Airport (SID) to Logan Intl. Airport (BOS) cost?
Discover the latest flight deals from SID to BOS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SID to BOS?
The cheapest flights from SID to BOS 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 SID to BOS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SID to BOS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Amilcar Cabral Intl. Airport (SID) to Logan Intl. Airport (BOS)?
There are no daily direct flights departing from Amilcar Cabral Intl. Airport (SID) to Logan Intl. Airport (BOS). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from SID to BOS?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on various factors, such as 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 Amilcar Cabral Intl. Airport (SID) to Logan Intl. Airport (BOS)?
Choose a flight from Amilcar Cabral Intl. Airport (SID) to Logan Intl. Airport (BOS) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour 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 Amilcar Cabral Intl. Airport (SID) to Logan Intl. Airport (BOS) last-minute?
Waiting until right before your break to book a flight from SID to BOS generally means paying more. While you may find some last-minute deals, there's no guarantee. Be flexible with your itinerary for a better chance of scoring a bargain.
Is it cheaper to book a SID to BOS flight and hotel package?
Compared with arranging hotels and flights separately, booking a SID to BOS flight and hotel package with Expedia could lead to significant savings. Better yet, managing everything in one place takes the hassle out of travel planning. Simply secure your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Amilcar Cabral Intl. Airport (SID) to Logan Intl. Airport (BOS)?
In most cases, you can cancel or modify your SID to BOS flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want further details, go to our Customer Service portal.

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