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BOS - EAS

$268 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 10/25. 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
sáb. 6/29
sáb. 7/6

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 42,686,544 times on KAYAK, and here is why:

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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
5:55 pm - 8:40 amBOS-EAS
9h 45m1 stop
8:30 am - 9:40 pmEAS-BOS
19h 10m1 stop
$590Iberia
Find Deal
jue., oct. 31 - sáb., nov. 9
5:30 pm - 1:00 pmBOS-EAS
14h 30m2 stops
8:30 am - 9:40 pmEAS-BOS
19h 10m1 stop
$633Iberia
Find Deal
jue., oct. 31 - sáb., nov. 9
5:30 pm - 1:00 pmBOS-EAS
14h 30m2 stops
9:20 am - 5:50 pmEAS-BOS
14h 30m2 stops
$682Iberia
Find Deal
jue., oct. 31 - sáb., nov. 9

Good to know

Low season

October

High season

June

Cheapest flight

$268
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 31% 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 $268 for a one-way ticket and $590 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 $987 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 14284 reviews
6.6Food
7.1Entertainment
7.6Boarding
7.2Comfort
8.0Crew
Airline reviews

28 hour delay at Fort Worth/Dallas airport, part due to weather which was unavoidable, but various other reasons - no pilot, no fa, mechanical problem, plane too small, too big, crew out of flying time, seat configuration problems.... endless and hourly updates with a different excuse. Finally told us about 3.00 am, that the flight was delayed to hours later.

2.0 MediocreAnonymous, May 2024MSY - DFW
Read more about American Airlines reviews

28 hour delay at Fort Worth/Dallas airport, part due to weather which was unavoidable, but various other reasons - no pilot, no fa, mechanical problem, plane too small, too big, crew out of flying time, seat configuration problems.... endless and hourly updates with a different excuse. Finally told us about 3.00 am, that the flight was delayed to hours later.

Experience was bad. 3.5 hour delay for a 2.5 hour trip. There was no r Transparency about the reason for the delay and it was done 30 mins at a time.

Original flight delayed several times and finally canceled at 2:30 in the morning. Staff at the gate was not very helpful in resolving problems or communicating why there were delays. I spent 34 hours at the airport before I could leave, they couldn't book me on another early flight even after canceling my original flight. Next flight available after my original flight was canceled was 22 hours later. I will never fly American Airlines again.

very very tight seats unfriendly crew who do not seem to care about the comfort of their passengers and do not know how to smile poor ground staff support at LHR and PHX

Iberia was great. American airlines was late for no reason ans with no explanatiom or apologies. We were on the runway for at least 40 minutes before taking off once we finally boarded

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

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…

Pretty fair for the price of the plane ticket. Food was poorly, but overall was a ok experience for a super long flight.

Good. Madrid to SFO was way better than ARN to Madrid. Mercifully, the seats to Madrid didn't recline. So although there was no leg room, your knees didn't get crushed

Overall was good except for the seat which, for an 8 hour intercontinental flight, was uncorfortable. For that kind of flight seats should have more space, even for economy seats.

Needed more info on connecting flight. Late flight made very short connection. Lost luggage that we still do not have!

Seats comfortable on economy plus and attendants very helpful. Food was ok. Bathrooms needed servicing.

Good food, prompt and timely flight, good on-board personnel

Thankful for 2-4-2 economy seating. Food was ok. Free beer & wine in economy was nice. Served hot dinner, mud- flight snack and pre-arrival ham sandwich. Seat with pillow & blanket. Reasonable movie options. Overall, a good experience. IBERIA APP is terrible terrible terrible.... needs to get upgraded to equivalent of TAP Airlines App. No option to bid or request an upgrade. Very disappointing.

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.

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.
10/25vie.
1 stopVueling
28h 00mBOS-EAS
$268
10/25vie.
2 stops
28h 45mBOS-EAS
$311
10/25vie.
3 stops
29h 55mBOS-EAS
$415
7/13sáb.
2 stopsAmerican Airlines
32h 55mBOS-EAS
$499
7/3mié.
2 stopsAmerican Airlines
20h 09mBOS-EAS
$547
7/13sáb.
1 stopIberia
22h 10mBOS-EAS
$638
6/29sáb.
1 stopIberia
10h 00mBOS-EAS
$756
10/24jue.
2 stopsAvianca
51h 25mBOS-EAS
$944
7/3mié.
3 stopsBritish Airways
68h 38mBOS-EAS
$1,931
7/2mar.
2 stopsAvianca
38h 35mBOS-EAS
$3,736

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Last minute flights from Boston to San Sebastian

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Boston to San Sebastian that are departing in the next 10 days.
6/4mar.
multi-stopIberia
27h 55mBOS-EAS
6/11mar.
multi-stopIberia
23h 35mEAS-BOS
$903
6/4mar.
multi-stopIberia
27h 10mBOS-EAS
6/11mar.
multi-stopIberia
23h 35mEAS-BOS
$905
6/4mar.
multi-stopIberia
39h 00mBOS-EAS
6/11mar.
multi-stopIberia
32h 52mEAS-BOS
$924

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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: