BOS - SID

$814 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 6/22. 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.
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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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Cheap Flights from Boston to Espargos

 
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.

Recent round-trip flight deals from Boston to Espargos

KAYAK's recommended round-trip deals from the most popular airlines that fly from Boston to Espargos.
Discover the best prices for you by selecting your travel dates on KAYAK.
TAP AIR PORTUGAL Logo
6:10 pm - 11:15 pmBOS-SID
26h 05m1 stop
TAP AIR PORTUGAL Logo
12:15 am - 8:05 pmSID-BOS
22h 50m1 stop
$897TAP AIR PORTUGAL
Find Deal
Mon, Sep 22 - Thu, Oct 9
TAP AIR PORTUGAL Logo
11:15 pm - 11:15 pmBOS-SID
21h 00m2 stops
TAP AIR PORTUGAL Logo
12:15 am - 8:05 pmSID-BOS
22h 50m1 stop
$940TAP AIR PORTUGAL
Find Deal
Mon, Sep 22 - Thu, Oct 9
TAP AIR PORTUGAL Logo
10:40 pm - 11:15 pmBOS-SID
21h 35m1 stop
TAP AIR PORTUGAL Logo
12:15 am - 8:05 pmSID-BOS
22h 50m1 stop
$972TAP AIR PORTUGAL
Find Deal
Wed, Sep 3 - Tue, Sep 16
TAP AIR PORTUGAL Logo
11:05 pm - 11:15 pmBOS-SID
21h 10m2 stops
TAP AIR PORTUGAL Logo
12:15 am - 8:05 pmSID-BOS
22h 50m1 stop
$987TAP AIR PORTUGAL
Find Deal
Wed, Sep 3 - Tue, Sep 16
TAP AIR PORTUGAL Logo
6:10 pm - 11:15 pmBOS-SID
26h 05m1 stop
TAP AIR PORTUGAL Logo
12:45 pm - 8:05 pmSID-BOS
34h 20m1 stop
$992TAP AIR PORTUGAL
Find Deal
Mon, Sep 22 - Fri, Oct 10
TAP AIR PORTUGAL Logo
6:10 pm - 11:15 pmBOS-SID
26h 05m1 stop
TAP AIR PORTUGAL Logo
12:45 pm - 8:05 pmSID-BOS
34h 20m1 stop
$1,019TAP AIR PORTUGAL
Find Deal
Wed, Sep 3 - Fri, Sep 19
TAP AIR PORTUGAL Logo
10:25 pm - 11:15 pmBOS-SID
21h 50m1 stop
TAP AIR PORTUGAL Logo
12:15 am - 7:44 amSID-BOS
34h 29m2 stops
$1,027TAP AIR PORTUGAL
Find Deal
Thu, Aug 7 - Thu, Aug 21
TAP AIR PORTUGAL Logo
11:05 pm - 11:15 pmBOS-SID
21h 10m2 stops
TAP AIR PORTUGAL Logo
12:45 pm - 8:05 pmSID-BOS
34h 20m1 stop
$1,034TAP AIR PORTUGAL
Find Deal
Wed, Sep 3 - Fri, Sep 19
Logo
5:45 am - 8:45 pmBOS-SID
36h 00m3 stops
Logo
12:45 pm - 8:20 pmSID-BOS
34h 35m2 stops
$1,382
Find Deal
Fri, Jun 13 - Fri, Jun 20
Logo
9:44 am - 2:10 pmBOS-SID
25h 26m2 stops
Logo
6:20 pm - 9:15 pmSID-BOS
29h 55m1 stop
$1,696
Find Deal
Sun, Jun 29 - Sat, Jul 5
Useful Info

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 November, where tickets cost $749 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,634 and $1,259 respectively.

How far in advance should I book a flight from Boston to Espargos?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Boston to Espargos, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Find deals

Good to know

Low seasonMay
High seasonJuly
Cheapest flight$814
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 15% 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 $814 for a one-way ticket and $897 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.

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 1851 reviews
6.3Entertainment
7.8Crew
7.0Boarding
6.2Food
7.1Comfort
Airline reviews

Very pleasant flight, crew was very nice. The flight was really smooth, big plane. The seats are kind of close together, so comfort was just OK. The boarding process on the way back to New York was a little chaotic. It took a long time.There were no announcements, no loudspeaker just one staff yelling out of instructions and a lot of people crowding in before their term to board. So that could really be improved a lot.

8.0 ExcellentAnonymous, Apr 2025LIS - JFK
Read more TAP AIR PORTUGAL reviews

Very pleasant flight, crew was very nice. The flight was really smooth, big plane. The seats are kind of close together, so comfort was just OK. The boarding process on the way back to New York was a little chaotic. It took a long time.There were no announcements, no loudspeaker just one staff yelling out of instructions and a lot of people crowding in before their term to board. So that could really be improved a lot.

The crew was very nice. The food was good. The entertainment on the way back to Miami wasn’t as good as the flight over. I wanted to watch Wicked but on the way over from Miami to Lisbon but the screen didn’t work. On the way from Lisbon to Miami Wicked wasn’t an option. Liked the option to check out overhead carry on with our checked luggage Overall the flights were very good. I would fly TaP again

Was a cheap flight and it got me to Portugal on time. For economy there was ample leg room and the flight attendants were pleasant and helpful.

Flight was packed. This was a very uncomfortable experience. Boarding process could be explained better. Despite recommending a window seat when travelling with a pet in the cabin, the seat in front of me had less space than the center and aisle seats. For Premium Economy, the seats were crammed with minimal legroom. I hate to think what Regular Economy was like. The cabin crew missed me at first when handing out meals. When my meal eventually came, there were no utensils. I'd originally booked to fly Business Class; those seats didn't look that great either.

Flight was packed. This was a very uncomfortable experience. Boarding process could be explained better. Despite recommending a window seat when travelling with a pet in the cabin, the seat in front of me had less space than the center and aisle seats. For Premium Economy, the seats were crammed with minimal legroom. I hate to think what Regular Economy was like. The cabin crew missed me at first when handing out meals. When my meal eventually came, there were no utensils.

First time and I enjoyed the trip…. Will fly again soon 🔜

Delayed flight because other plane was occupying the gate for longer than expected. Once we boarded the plane had to wait 1 hour before taking off. We. Almost lost our connection flight and the baggage didn’t make it. We had to wait two days to receive our luggage. Hope they improve the timing or work with the airport to get better service.

I’m still missing my bags. I’m soo frustrated

Boarding went fast. Lisbon's gates are too small for the flights they serve.

Baggage check in was very slow. No sign that the check in was TAP until the station opened. Understaffed and overworked team.

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

Information on your arrival and departure airports

Espargos (SID)
Boston (BOS)

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