$715 Cheap Flights from Boston (BOS) to Sal Island (SID)

View $715 flight on Mon, Jul 27, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $715 for one-way flights and $730 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Tue, Dec 2 - Wed, Dec 10
BOS
Boston
SID
Sal
$730 Roundtrip, found 2 hours ago
$730
Roundtrip
found 2 hours ago
Select TAP Portugal flight, departing Tue, Dec 2 from Boston to Sal, returning Wed, Dec 10, priced at $730 found 2 hours ago
TAP Portugal
Wed, Feb 25 - Wed, Mar 4
BOS
Boston
SID
Sal
$737 Roundtrip, found 6 hours ago
$737
Roundtrip
found 6 hours ago
Select TAP Portugal flight, departing Wed, Feb 25 from Boston to Sal, returning Wed, Mar 4, priced at $737 found 6 hours ago
TAP Portugal
Tue, May 5 - Wed, May 13
BOS
Boston
SID
Sal
$738 Roundtrip, found 4 days ago
$738
Roundtrip
found 4 days ago
Select TAP Portugal flight, departing Tue, May 5 from Boston to Sal, returning Wed, May 13, priced at $738 found 4 days ago
TAP Portugal
Wed, Apr 29 - Sun, May 24
BOS
Boston
SID
Sal
$745 Roundtrip, found 2 days ago
$745
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Wed, Apr 29 from Boston to Sal, returning Sun, May 24, priced at $745 found 2 days ago
TAP Portugal
Thu, Mar 26 - Wed, Apr 1
BOS
Boston
SID
Sal
$747 Roundtrip, found 1 day ago
$747
Roundtrip
found 1 day ago
Select TAP Portugal flight, departing Thu, Mar 26 from Boston to Sal, returning Wed, Apr 1, priced at $747 found 1 day ago
TAP Portugal
Mon, Feb 2 - Tue, Feb 17
BOS
Boston
SID
Sal
$754 Roundtrip, found 1 day ago
$754
Roundtrip
found 1 day ago
Select TAP Portugal flight, departing Mon, Feb 2 from Boston to Sal, returning Tue, Feb 17, priced at $754 found 1 day ago
Swiss International Air Lines
Mon, Jan 12 - Fri, Jan 16
BOS
Boston
SID
Sal
$1,238 Roundtrip, found 1 day ago
$1,238
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Mon, Jan 12 from Boston to Sal, returning Fri, Jan 16, priced at $1,238 found 1 day ago
Lufthansa
Tue, Apr 21 - Sat, May 2
BOS
Boston
SID
Sal
$1,336 Roundtrip, found 5 days ago
$1,336
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Tue, Apr 21 from Boston to Sal, returning Sat, May 2, priced at $1,336 found 5 days ago
Turkish Airlines
Sun, Apr 12 - Fri, Apr 17
BOS
Boston
SID
Sal
$1,746 Roundtrip, found 1 day ago
$1,746
Roundtrip
found 1 day ago
Select Turkish Airlines flight, departing Sun, Apr 12 from Boston to Sal, returning Fri, Apr 17, priced at $1,746 found 1 day ago
Royal Air Maroc
Sat, Nov 8 - Fri, Nov 21
BOS
Boston
SID
Sal
$1,907 Roundtrip, found 2 days ago
$1,907
Roundtrip
found 2 days ago
Select Royal Air Maroc flight, departing Sat, Nov 8 from Boston to Sal, returning Fri, Nov 21, priced at $1,907 found 2 days ago

Alternative airports near Sal

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

Select flight to Amilcar Cabral Intl. SID. Cheapest and Closest option available. Average driving time to city center is 2 minutes. Flights from $1,057
SID
Amilcar Cabral Intl.
CheapestClosest
Average driving time to city center2 min
Flights from $1,057

Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Amilcar Cabral Intl. Airport (SID) cost?
Get a cheap one-way flight from $715 or cheap return flight from $730 from Logan Intl. Airport (BOS) to Amilcar Cabral Intl. Airport (SID) 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 Logan Intl. Airport (BOS) to Amilcar Cabral Intl. Airport (SID)?
The cheapest month to fly from BOS to SID is December, when there's less demand. Off-peak months are often when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Logan Intl. Airport (BOS) to Amilcar Cabral Intl. Airport (SID)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll take you from BOS to SID. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Logan Intl. Airport (BOS) to Amilcar Cabral Intl. Airport (SID)?
Nonstop flights from Logan Intl. Airport (BOS) to Amilcar Cabral Intl. Airport (SID) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BOS to SID?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Amilcar Cabral Intl. Airport (SID)?
To avoid potential delays on the Logan Intl. Airport (BOS) to Amilcar Cabral Intl. Airport (SID) route, fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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 Logan Intl. Airport (BOS) to Amilcar Cabral Intl. Airport (SID) last-minute?
Booking your flight from BOS to SID just before your journey is usually more expensive. However, if there's some wiggle room with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a BOS to SID flight and hotel package?
Booking a BOS to SID flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our wide range of accommodations and then add car rentals, activities and flights 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 Logan Intl. Airport (BOS) to Amilcar Cabral Intl. Airport (SID)?
If you reserved your BOS to SID flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Travel information

Origin airport
Logan Intl.
Destination airport
Amilcar Cabral Intl.
Airlines serving
Lufthansa, Royal Air Maroc, Swiss International Air Lines, TAP Portugal, Turkish Airlines
Roundtrip price
$730
Distance
3328 mi

Book with confidence

Boston to Sal Island Flights

The cheapest times to fly from Boston to Sal Island

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

 

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

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

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 Boston to Sal Island in 2025. You can also book with separate airlines for your outbound and return journeys, from $715 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 Boston to Sal Island 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 Boston to Sal Island 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.

 

Boston to Sal Island Flights

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*Available to One Key members.