BOS - SID

$691 Find Cheap Flights from Boston to Espargos

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Espargos departing on 3/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Espargos

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Espargos, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Espargos, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$835
Overall average: $863
TAP AIR PORTUGAL
Sun 3/8Sun 3/29
BOS - SID • 1 stop
Cheapest one-way
$691
TAP AIR PORTUGAL
Sun 3/22
BOS - SID • 1 stop
When to travel
January
Cheapest • 24% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Espargos!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Espargos (BOS-SID)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Espargos that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Espargos

Sun, Mar 8 - Sun, Mar 29
TAP AIR PORTUGAL Logo
11:45 pm - 12:05 amBOS-SID
21h 20m1 stop
TAP AIR PORTUGAL Logo
12:45 pm - 8:20 pmSID-BOS
34h 35m1 stop
$835TAP AIR PORTUGAL
Find Deal
Sun, Mar 15 - Fri, Mar 27
TAP AIR PORTUGAL Logo
11:45 pm - 12:05 amBOS-SID
21h 20m1 stop
TAP AIR PORTUGAL Logo
1:05 am - 9:10 pmSID-BOS
23h 05m1 stop
$921TAP AIR PORTUGAL
Find Deal
Sun, Mar 8 - Sun, Mar 29
TAP AIR PORTUGAL Logo
11:45 pm - 12:05 amBOS-SID
21h 20m1 stop
TAP AIR PORTUGAL Logo
12:45 pm - 7:55 pmSID-BOS
34h 10m2 stops
$934TAP AIR PORTUGAL
Find Deal
Sun, Mar 8 - Fri, Mar 27
TAP AIR PORTUGAL Logo
7:05 pm - 12:05 amBOS-SID
26h 00m1 stop
TAP AIR PORTUGAL Logo
1:05 am - 3:35 pmSID-BOS
17h 30m1 stop
$962TAP AIR PORTUGAL
Find Deal
Sun, Mar 8 - Sat, Mar 28
TAP AIR PORTUGAL Logo
11:45 pm - 12:05 amBOS-SID
21h 20m1 stop
TAP AIR PORTUGAL Logo
1:05 am - 7:50 pmSID-BOS
21h 45m1 stop
$980TAP AIR PORTUGAL
Find Deal
Sun, Mar 8 - Sat, Mar 28
TAP AIR PORTUGAL Logo
11:45 pm - 12:05 amBOS-SID
21h 20m1 stop
TAP AIR PORTUGAL Logo
1:05 am - 7:55 pmSID-BOS
45h 50m2 stops
$993TAP AIR PORTUGAL
Find Deal
Sun, Mar 15 - Fri, Mar 27
TAP AIR PORTUGAL Logo
2:10 pm - 12:05 amBOS-SID
30h 55m2 stops
TAP AIR PORTUGAL Logo
1:05 am - 3:35 pmSID-BOS
17h 30m1 stop
$1,178TAP AIR PORTUGAL
Find Deal
Sun, Mar 8 - Fri, Mar 27
TAP AIR PORTUGAL Logo
4:28 pm - 12:05 amBOS-SID
28h 37m2 stops
TAP AIR PORTUGAL Logo
1:05 am - 9:10 pmSID-BOS
23h 05m1 stop
$1,208TAP AIR PORTUGAL
Find Deal
Sun, Mar 8 - Sun, Mar 29
TAP AIR PORTUGAL Logo
4:28 pm - 12:05 amBOS-SID
28h 37m2 stops
TAP AIR PORTUGAL Logo
12:45 pm - 7:55 pmSID-BOS
34h 10m2 stops
$1,221TAP AIR PORTUGAL
Find Deal
Sun, Mar 8 - Sat, Mar 28
TAP AIR PORTUGAL Logo
4:28 pm - 12:05 amBOS-SID
28h 37m2 stops
TAP AIR PORTUGAL Logo
1:05 am - 7:55 pmSID-BOS
45h 50m2 stops
$1,276TAP AIR PORTUGAL
Find Deal
Booking Insights

KAYAK's insights & trends for Boston to Espargos flights

Get data-powered insights and trends into flights from Boston to Espargos to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Boston to Espargos?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Espargos, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Espargos is January, where tickets cost $802 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,387 and $1,256 respectively.

Good to know

Low seasonNovember
Cheapest flight$691
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly with an average 18% increase in price.
Flight from Boston to Espargos

When to book flights from Boston to Espargos

Are your dates flexible? Find out the best times to travel from Boston to Espargos based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Espargos

  • What is the cheapest flight from Boston to Espargos?

    In the last 3 days, the lowest price for a flight from Boston to Espargos was $691 for a one-way ticket and $835 for a round-trip.

  • Do I need a passport to fly between Boston and Espargos?

    Yes

  • Which aircraft models fly most regularly from Boston to Espargos?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Espargos?

    Star Alliance is the only airline alliance operating flights between Boston and Espargos.

  • How does KAYAK find such low prices on flights from Boston to Espargos?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Espargos.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Espargos?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Espargos from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Espargos?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Espargos with an airline and back to Boston with another airline. Booking your flights between Boston and SID can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Espargos?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Espargos from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boston to Espargos

 
See real verified KAYAK customer reviews for airlines flying from Boston to Espargos. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Espargos? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
TAP AIR PORTUGALOverall score based on 2081 reviews
7.0Boarding
6.2Food
7.1Comfort
7.8Crew
6.3Entertainment
Airline reviews

Boarding process was fast and efficient. Short flight but on time and well organized. I would certainly fly TAP again.

10.0 ExcellentBill, Nov 2025OPO - LIS
Read more TAP AIR PORTUGAL reviews

Boarding process was fast and efficient. Short flight but on time and well organized. I would certainly fly TAP again.

TAP‘s flight attendants seem to be among the least ambitious of all the international flight crews we’ve flown with. . When we left US and went to Portugal, and when we returned from Portugal, flight attendants were not very visible. Then did not offer frequent water breaks and when we had to go back to request water, I was almost an imposition. Meal quality was just average. The dinners were fine. Breakfast wraps were presented soggy.

Plane was delayed, reading the gates on their screens was horrible. They posted it a half an hour before the plane boarded. By the time I got there with my premier boarding they have filled the plane because it was over booked. Gate closed at 12:03 I was there at 11:54 plane took over around 12:20. I was told they would put me on the next flight. I had to go to TAP information desk. They didn’t give me a voucher they just said they would put me on the next flight. At the desk I was told I had to punches a ticket. The woman said buy it online because it’s cheaper. It in fact was not cheaper. But I had gotten out of the long line that formed so I paid 200$ for a new ticket. At a later flight, not the next flight. I had checked my bag and was told it would be on my new flight. I was then bumped to an earlier flight and was told my bag would also be on my flight. After landing in Madrid loosing a day in my hotel i landed without my bag. They didn’t load it on any flight that day. It arrived in madrid the next day. Essentially ruining the first two days of my vacation. I’m now seeking compensation.

The business class seats were smaller and closer together than other airlines.

Boarding- Good Seat Comfort - OK Crew - Good Food - Mediocre On Time - Very Good

Didn't like much. Wheelchair assistance was almost nonexistent. No one at TAP check in process helpful. On the plane, stewards were not friendly and disorganized. Food was terrible for 8 hr flight. We were skipped at snack time and even though we tried to get attention using overhead call system no one even looked up at us to acknowledge. Being at the back of first section and by the lavatory we only were able to request when they came to pick up everyone else's garbage and they were nonchalant...no apology or even choice. The 1/2 half bread with slice of cheese was a waste. Deplaning was horrible but I'll blame lisbon airport for that. Plane left late at made good time still arrived about 15 behind schedule and for using remote deplaning and bus to terminal took another 20 min to gate. Those with connections were highly stressed. Took us 2 hrs from landing to get to ground transportation and exit airport. And that was with wheelchair assistance.

Bad boarding, threat to force bag check mid journey, lines, late, buses, more waiting awful end to end.

This flight arrived late. We joined well over a thousand of other people waiting to go through customs. Air Portugal has lost my bag. We had to chase down a representative even though we had waited at the baggage claim for well over 1 hour and 35 minutes for baggage to come. No representative was there to explain the delay or to give any direction. After 1 hour and 35 minutes at least four passengers had no baggage to pick up or had a fraction of their baggage. The representative was a young woman who clearly did not have the experience to deal with what was happening. Very disappointing as of course we were dealing with great amount of jet lag and having been up for 24 hours at that point and not being able to have any of the things necessary at home that were contained in the bag was quite upsetting. That instant occurred last night at approximately 11:15 p.m. and as of 12:30 p.m. the next day I have not heard anything from Air Portugal.

An old airplane with very uncomfortable seats in the Comfort “class! Small, narrow, and hard seat. Entertainment options are inferior, old movies. Boarding started at the back of the airplane, as we entered the aircraft last instead of after business class, risking the possibility that the comfort section would not have room for carry-on in the overhead bin. The food was ok. White wine was terrible. Overall, the flight felt worse than cheap airliners, and the price was as high as premium carriers.

I had a business class ticket from EWR to Madrid with a layover at LIS for 11 hours. It was obvious that I needed to pick up my luggage in Lisbon for 11 hours and check it in again when boarding the second flight to Madrid. Before buying the ticket, I called TAP customer service. Customer service assured me that I could get my luggage in Lisbon. When I arrived at Newark airport, I immediately asked to check my luggage to Lisbon. However, the TAP employee refused me, saying that I should resolve this issue upon arrival in Lisbon. She checked my luggage to Madrid. I asked the TAP employee at the gate to help me when boarding the plane, I asked the flight attendants manager on board the plane to help me. All the employees refused to help me and said that I should resolve this issue in Lisbon. It took me 4 hours to resolve this issue in Lisbon. I arrived at 11am and they didn't give me my luggage until 3pm. As a result, I was so tired after a sleepless night on the plane and 4 hours on my feet at the airport and all my plans were ruined that I couldn't fly to Madrid. It was a terrible experiance,

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

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