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BOS - EAS

$539 Find cheap flights from Boston to San Sebastian

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 San Sebastian departing on 5/16. 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
0 bags
Wed 6/5
Wed 6/12

Search hundreds of travel sites at once for deals on flights to San Sebastian

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to San Sebastian, 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 San Sebastian, as well as popular online travel agencies
In the last 7 days travelers have searched 42,830,901 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from Boston to San Sebastian (BOS-EAS)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to San Sebastian 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 and deals for you by selecting your travel dates.
Choose your dates
11:05 pm - 8:35 amBOS-EAS
27h 30m1 stop
5:40 pm - 9:20 pmEAS-BOS
33h 40m1 stop
$753Vueling
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Mon, Jun 3 - Sat, Jun 8
11:05 pm - 8:35 amBOS-EAS
27h 30m1 stop
8:35 pm - 9:20 pmEAS-BOS
30h 45m2 stops
Mon, Jun 3 - Sat, Jun 8
7:15 pm - 8:35 amBOS-EAS
31h 20m3 stops
5:40 pm - 6:00 pmEAS-BOS
30h 20m3 stops
Mon, Jun 3 - Sat, Jun 8
11:40 am - 8:40 amBOS-EAS
15h 00m2 stops
9:10 am - 9:15 pmEAS-BOS
18h 05m1 stop
$984Iberia
Find Deal
Thu, May 16 - Wed, May 29
7:15 pm - 8:35 amBOS-EAS
31h 20m3 stops
8:30 am - 2:10 pmEAS-BOS
35h 40m2 stops
Mon, Jun 3 - Sat, Jun 8
11:40 am - 8:40 amBOS-EAS
15h 00m2 stops
9:20 am - 9:29 pmEAS-BOS
18h 09m2 stops
$996Iberia
Find Deal
Thu, May 16 - Wed, May 29
12:17 pm - 8:50 pmBOS-EAS
26h 33m2 stops
9:20 am - 10:42 pmEAS-BOS
19h 22m2 stops
$1,141American Airlines
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Wed, Jun 19 - Wed, Jul 3
8:15 pm - 8:50 pmBOS-EAS
18h 35m2 stops
9:10 pm - 11:55 amEAS-BOS
20h 45m2 stops
$1,176British Airways
Find Deal
Sun, May 26 - Sat, Jun 1
1:10 pm - 8:40 amBOS-EAS
37h 30m2 stops
1:40 pm - 12:05 pmEAS-BOS
28h 25m2 stops
$1,362American Airlines
Find Deal
Wed, Jul 3 - Sat, Jul 13
12:15 am - 8:40 amBOS-EAS
26h 25m2 stops
9:30 pm - 2:25 pmEAS-BOS
46h 55m2 stops
$2,202Avianca
Find Deal
Sat, May 25 - Sat, Jun 1

Flights from Boston to San Sebastian - Travel Insights & Trends

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

Which airlines provide the cheapest flights from Boston to San Sebastian?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Iberia ($603) and Vueling ($900). The cheapest round-trip tickets were found on Vueling ($753) and Iberia ($984).

Good to know

Low season

October

High season

June

Cheapest flight

$539
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Boston to San Sebastian

When to book flights from Boston to San Sebastian

Are your dates flexible? Find out the best times to travel from Boston to San Sebastian 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 San Sebastian

  • What is the cheapest flight from Boston to San Sebastian?

    In the last 3 days, the lowest price for a flight from Boston to San Sebastian was $539 for a one-way ticket and $753 for a round-trip.

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

    Yes

  • Which aircraft models fly most regularly from Boston to San Sebastian?

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

  • Which airline alliances offer flights from Boston to San Sebastian?

    oneworld, and Star Alliance are the airline alliances operating flights between Boston and San Sebastian, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Boston to San Sebastian, American Airlines or Iberia?

    The two airlines most popular with KAYAK users for flights from Boston to San Sebastian are American Airlines and Iberia. With an average price for the route of $796 and an overall rating of 7.3, American Airlines is the most popular choice. Iberia is also a great choice for the route, with an average price of $988 and an overall rating of 7.1.

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

    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 San Sebastian.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Sebastian 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 San Sebastian?

    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 San Sebastian with an airline and back to Boston with another airline. Booking your flights between Boston and EAS 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 San Sebastian?

    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 San Sebastian from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Boston to San Sebastian

 
See real verified KAYAK customer reviews for airlines flying from Boston to San Sebastian. 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 San Sebastian? 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.
7.3
American AirlinesOverall score based on 14713 reviews
7.6Boarding
8.0Crew
7.1Entertainment
6.6Food
7.2Comfort
Airline reviews

The CX617 from HK to BKK was delayed more than 1.5 hours.

2.0 MediocreAnonymous, May 2024STL - ORD
Read more about American Airlines reviews

The CX617 from HK to BKK was delayed more than 1.5 hours.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

I was in business class. There was an excellent headset. But half an hour before arrival they collected them! The rest of the trip I had to use a cheap earphone. There must be a better way to protect the headphones.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

Seriously, not displaying departure gate until very last minute is awful. Specially when you have to take an elevator and then transport to go to the sub-terminal. That’s awful in such a busy airport as Heathrow. And I cannot choose seat on this flight because it’s run by British Airways, even entering locator code.

The absolute worst. Our flight from Madrid to Charlotte was delayed nearly 2hrs which cost us to miss our connecting flight. The only availability was to either separate my party of four (two being children) several other locations to reach our final destination. The other was drop us off at entirely different location we never intended on going. Thus resulting in us driving a rental 2 hrs to our original final destination. On top of that the flight from Madrid was uncomfortable and some staff were extremely rude.

delayed delayed delayed. was supposed to have a 2 hour layover and very nearly missed my connection.

Despite a bumpy flight the pilot was great. The rest of the crew on the other hand couldn’t care less if a passenger would colapse and die. Horrible service, robot like, lifeless…

No service due to turbulence. No entertainment on this type of aircraft. But nice old comfortable seats.

Les 2 vols se sont bien passés, le temps de correspondance juste mais nous sommes arrivés à temps.

My luggage did not get to my Miami destination/home. I am waiting for it 24 hours later.

The only comment I have is why do you sell snacks on board? They should be free. When we take domestic flights here in US, our snacks are free. Also, please communicate with me in English. I received so many emails way before my flight that were in Spanish that I had to ask my son to interpret for me. You should be WELL AWARE if the customers you are communicating speak the language, it does mean that we speak and understand Spanish because we are traveling to Spain, NOT NECESSARILY! Thank you!

Flight was delayed by well over an hour. Communication was terrible.

I like the team but I don't like the food you provided with money. I want free food and free water.

I’m hoping for WiFi included. Everything else was very good

An average flight experience. For our transatlantic portion, they provided a main meal and two snacks. However, the food was not very tasty and the drinks far too small and infrequent for such a long flight. The regrettable part of the flight was that the toilets were extremely filthy. I feel this is unacceptable.

Both flights were delayed. I lost my connection on the way back. No voucher or anything was givenx I had business ticket and no support to make it on time. I got to the door running 5 min after they close. Food really bad. Breakfast in business was worst that I what I remember in economy. Even though I have accumulated many miles, I don’t think Inwill keep buying Iberia. I am a frequent business traveler.

The food is really eco only level. Breakfast was shameful. I am considering to stop flying with Iberia. Business prices are as expensive as other companies with much better service.

Why no entertainment? Also water should be free, it is basic human right.

Late boarding. Delayed departure leading to rushed connection at Madrid Barajas. Not necessarily Iberia's fault but delay loading cargo didn't help.

Book cheap flights from Boston to San Sebastian

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Boston to San Sebastian found on KAYAK in the last 72 hours.
5/16Thu
3 stops
34h 26mBOS-EAS
$539
7/13Sat
2 stopsIberia
56h 55mBOS-EAS
$603
5/16Thu
2 stops
31h 25mBOS-EAS
$649
5/25Sat
2 stops
27h 05mBOS-EAS
$779
5/16Thu
1 stop
10h 00mBOS-EAS
$794
7/3Wed
3 stops
27h 05mBOS-EAS
$847
7/13Sat
3 stops
39h 06mBOS-EAS
$881
7/13Sat
1 stopVueling
11h 50mBOS-EAS
$900
7/3Wed
2 stopsIberia
30h 30mBOS-EAS
$911
7/2Tue
2 stopsAvianca
38h 35mBOS-EAS
$2,371

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Boston - San Sebastian Flights

Departure:

Boston (BOS)United States

Destination:

San Sebastian (EAS)Spain

Return flight deals:

San Sebastian - Boston

Cabin classes: