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Espargos

$534+ Cheap flights from Boston (BOS) to Espargos (SID)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SID
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from Boston to Espargos

Cheapest flights from Boston to Espargos
Explore the most affordable flight options available from Boston to Espargos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:20 pmBOS - SID
2 stops17h 35mMultiple Airlines
Sat 12/2710:20 pmSID - BOS
1 stop25h 40mMultiple Airlines
Deal found 12/21$1,677
This SmartFares deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:10 pmBOS - SID
1 stop19h 15mSWISS
Sat 12/2710:20 pmSID - BOS
1 stop25h 40mSWISS
Deal found 12/21$1,853
This Kiwi.com deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:50 pmBOS - SID
2 stops36h 20mMultiple Airlines
Fri 1/91:05 amSID - BOS
1 stop17h 30mMultiple Airlines
Deal found 12/22$1,955
This KAYAK deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:10 pmBOS - SID
1 stop19h 15mSWISS
Wed 12/3110:30 pmSID - BOS
1 stop25h 30mSWISS
Deal found 12/21$2,218
This Ovago deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:10 pmBOS - SID
1 stop19h 15mSWISS
Wed 12/3110:30 pmSID - BOS
1 stop25h 30mSWISS
Deal found 12/21$2,233
This Gurufare deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:50 pmBOS - SID
1 stop16h 30mSWISS
Wed 12/3110:30 pmSID - BOS
1 stop25h 30mSWISS
Deal found 12/22$2,306
This FlightHub deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:55 pmBOS - SID
2 stops29h 10mTAP AIR PORTUGAL
Tue 12/301:05 amSID - BOS
1 stop17h 30mTAP AIR PORTUGAL
Deal found 12/22$2,347
This Kiwi.com deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:40 pmBOS - SID
2 stops38h 15mMultiple Airlines
Mon 12/291:05 amSID - BOS
1 stop17h 40mMultiple Airlines
Deal found 12/21$2,376
This Kiwi.com deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:10 pmBOS - SID
2 stops37h 25mMultiple Airlines
Mon 12/291:05 amSID - BOS
1 stop17h 40mMultiple Airlines
Deal found 12/21$2,384
This KAYAK deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:50 pmBOS - SID
1 stop19h 40mSWISS
Tue 12/309:20 amSID - BOS
2 stops39h 00mSWISS
Deal found 12/21$2,386
This Ovago deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:50 pmBOS - SID
1 stop19h 40mSWISS
Wed 12/3110:30 pmSID - BOS
1 stop25h 30mSWISS
Deal found 12/21$2,397

Find flight deals from Boston to Espargos

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Espargos (SID). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$705
(Booking.com)

One-way from

$534
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,434
Provider with most accurate pricing for Boston Logan Intl-Espargos Amilcar Cabral Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Espargos Amilcar Cabral Intl flights.
Search Deals
From Boston Logan Intl to Espargos Amilcar Cabral Intl
Search Deals
One-way flight from Boston Logan Intl to Espargos Amilcar Cabral Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Espargos that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Boston to Espargos that are best for you.

Fly from

Boston

Fly to

Espargos

Route

Depart

Return

Price

BostonEspargos

BOS - SID

BOSSID

Boston Logan Intl

Mon 2/2

6:05 pm-12:05 am

1 stop26h 00m

Espargos Amilcar Cabral Intl

Tue 2/24

1:05 am-2:35 pm

1 stop17h 30m

$702

BostonEspargos

BOS - SID

BOSSID

Boston Logan Intl

Tue 3/24

7:05 pm-12:05 am

1 stop26h 00m

Espargos Amilcar Cabral Intl

Thu 4/9

12:15 am-8:25 pm

1 stop23h 10m

$712

BostonEspargos

BOS - SID

BOSSID

Boston Logan Intl

Mon 4/6

10:45 pm-11:15 pm

1 stop21h 30m

Espargos Amilcar Cabral Intl

Mon 4/13

12:15 am-2:40 pm

1 stop17h 25m

$718

BostonEspargos

BOS - SID

BOSSID

Boston Logan Intl

Sun 3/15

11:45 pm-12:05 am

1 stop21h 20m

Espargos Amilcar Cabral Intl

Fri 4/3

12:15 am-8:45 pm

1 stop23h 30m

$770

BostonEspargos

BOS - SID

BOSSID

Boston Logan Intl

Sun 3/15

11:45 pm-12:05 am

1 stop21h 20m

Espargos Amilcar Cabral Intl

Fri 3/27

1:05 am-3:35 pm

1 stop17h 30m

$795

BostonEspargos

BOS - SID

BOSSID

Boston Logan Intl

Sun 3/8

7:05 pm-12:05 am

1 stop26h 00m

Espargos Amilcar Cabral Intl

Fri 3/27

1:05 am-3:35 pm

1 stop17h 30m

$795

BostonEspargos

BOS - SID

BOSSID

Boston Logan Intl

Sun 3/8

7:05 pm-12:05 am

1 stop26h 00m

Espargos Amilcar Cabral Intl

Sun 3/29

12:45 pm-8:20 pm

1 stop34h 35m

$802

BostonEspargos

BOS - SID

BOSSID

Boston Logan Intl

Sun 1/4

9:25 pm-5:15 pm

3 stops39h 50m

$534

BostonEspargos

BOS - SID

BOSSID

Boston Logan Intl

Sat 4/18

6:05 pm-11:15 pm

1 stop26h 10m

$671

BostonEspargos

BOS - SID

BOSSID

Boston Logan Intl

Sun 3/8

7:05 pm-12:05 am

1 stop26h 00m

$681

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 12 results
1
2

Compare providers for flights from Boston to Espargos

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Espargos in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*2 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Espargos flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boston-Espargos flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Boston-Espargos flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Espargos flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Espargos flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Espargos

Have a flexible travel schedule? Discover the best time to fly to Espargos from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Espargos

What is the cheapest month to book a flight from Boston to Espargos?

Currently, October is the cheapest month in which you can book a flight from Boston to Espargos (average of $734). Flying from Boston to Espargos in November is currently the most expensive (average of $1,179). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to SID?

Find hourly flight availability from Boston to Espargos. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 33% on flights from Boston to Espargos by exploring options for tickets at noon.

Reviews of airlines servicing Espargos

Get insights into the airlines that provide service to Espargos. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Espargos. Reviews last updated December 23, 2025.
Read reviews from past customers who have flown TAP AIR PORTUGAL from Boston to Espargos. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
TAP AIR PORTUGAL
7.2
Good
2,095 reviews

Overall

7.2

Boarding

7.0

Comfort

7.1

Crew

7.8

Entertainment

6.3

Food

6.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LIS - EWR

Both flights returning to newirk airport was delayed by over a hour with minimum early notification
TAP AIR PORTUGAL
7.2
Good
2,095 reviews
TAP AIR PORTUGAL
7.2
Good
2,095 reviews

Overall

7.2

Boarding

7.0

Comfort

7.1

Crew

7.8

Entertainment

6.3

Food

6.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LIS - EWR

Both flights returning to newirk airport was delayed by over a hour with minimum early notification

Related info for your journey

Find useful and relevant information for your journey from Boston to Espargos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boston to Espargos?

    TAP AIR PORTUGAL can get you from Boston to Espargos in just under 26h. Your travel time can differ by up to . The distance from Boston to Espargos is about 3325 mi.

  • What is the cheapest airline to fly from Boston to Espargos round-trip?

    TAP AIR PORTUGAL, at $767, was found to be the cheapest airline from Boston to Espargos.. Users have found that TAP AIR PORTUGAL is 28% cheaper than the other options available to this destination.

  • Can I find deals for flights from Boston to Espargos that include hotel bookings?

    Yes. In addition to deals on Boston to Espargos flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Espargos?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Espargos.

  • Can I find deals for business class flights from Boston to Espargos?

    Yes. Cheapflights offers flight deals from Boston to Espargos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Espargos?

    Currently, October is the cheapest month in which you can book a flight from Boston to Espargos (average of $734). Flying from Boston to Espargos in November is currently the most expensive (average of $1,179). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Other flights to Espargos

Explore flights to Espargos departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on December 23, 2025.
Espargos to Lisbon flights

Top airline flying from Boston to Espargos

Discover the top airline that operate flights from Boston to Espargos. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$767Average$1,086FlexibilityNo cancel feeOn-timeN/A

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