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BOS - EAS

$400 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 8/8. 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
Sat 6/15
Sat 6/22

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 42,211,976 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
4:40 pm - 8:40 amBOS-EAS
10h 00m1 stop
1:40 pm - 9:10 pmEAS-BOS
13h 30m2 stops
$803Iberia
Find Deal
Wed, Jun 12 - Wed, Jun 19
10:23 am - 8:40 amBOS-EAS
16h 17m2 stops
9:20 am - 9:10 pmEAS-BOS
17h 50m2 stops
$849Iberia
Find Deal
Wed, Jun 12 - Wed, Jun 19
4:40 pm - 8:40 amBOS-EAS
10h 00m1 stop
1:40 pm - 10:37 pmEAS-BOS
14h 57m2 stops
$969Iberia
Find Deal
Wed, May 29 - Wed, Jun 5
4:40 pm - 8:40 amBOS-EAS
10h 00m1 stop
9:30 pm - 3:05 pmEAS-BOS
23h 35m1 stop
Fri, Aug 2 - Mon, Aug 5
4:40 pm - 8:40 amBOS-EAS
10h 00m1 stop
9:30 pm - 4:45 pmEAS-BOS
49h 15m2 stops
Fri, Aug 2 - Mon, Aug 5
4:40 pm - 8:40 amBOS-EAS
10h 00m1 stop
9:20 am - 3:05 pmEAS-BOS
11h 45m1 stop
$1,022Iberia
Find Deal
Wed, Jun 12 - Wed, Jun 19
10:22 am - 8:40 amBOS-EAS
16h 18m2 stops
1:40 pm - 3:05 pmEAS-BOS
31h 25m1 stop
$1,118American Airlines
Find Deal
Fri, Aug 2 - Mon, Aug 5
10:55 pm - 8:50 pmBOS-EAS
15h 55m2 stops
1:40 pm - 9:10 pmEAS-BOS
13h 30m2 stops
$1,517Iberia
Find Deal
Fri, Aug 2 - Mon, Aug 5
12:15 am - 8:40 amBOS-EAS
26h 25m2 stops
9:30 pm - 2:25 pmEAS-BOS
46h 55m2 stops
$1,981Avianca
Find Deal
Tue, Jun 11 - Wed, Jun 19
12:15 am - 8:40 amBOS-EAS
26h 25m2 stops
9:30 pm - 2:25 pmEAS-BOS
22h 55m2 stops
$2,328Avianca
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 Vueling ($435) and Iberia ($603). The cheapest round-trip tickets were found on Iberia ($803) and American Airlines ($1,118).

Good to know

Low season

October

High season

June

Cheapest flight

$400
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 32% 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 $400 for a one-way ticket and $803 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 $989 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 14514 reviews
7.2Comfort
7.1Entertainment
7.6Boarding
6.6Food
8.0Crew
Airline reviews

Flight attendant was incredible. Very efficient, friendly and pleasant. Patricia was one of the best I have ever seen. Please give her a big raise!

10.0 ExcellentJerry, May 2024LAS - PHX
Read more about American Airlines reviews

Flight attendant was incredible. Very efficient, friendly and pleasant. Patricia was one of the best I have ever seen. Please give her a big raise!

Delayed multiple times. Boarding was ok but getting off the aircraft was a mess. So disorganized with staff trying to help the elderly but completely blocking path for anyone else to move. Bathroom was disgusting, probably caused by one of the customers but staff couldn't care less to help clean it. No one wanted to use it since the floor was completely soaked so everyone just lined up the other restroom while the staff just chit chat with each other while looking at us.

LIT to DFW - 3 hours late; the entire plane had been boarded before they told us there was a delay due to a weather-related ground stop in Dallas. DFW to MAY - 2+ hours late due to A/C needing to be repaired after everyone had boarded, then when we finally reach the runway, the First Officer timed out and we had to taxi all the way back to the gate and wait for a new one. I arrived in New Orleans 5+ hours later than I should have. Return flights were completely cancelled; rebooked through the app to fly through CLT instead of DFW. MSY to CLT had no issues, but CLT to LIT was delayed 1.25 hrs because flight attendants had not arrived to the airport yet. At least they didn’t make us all sit on the plane to wait for them. I should have driven.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in flight WiFi Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay (especially this much) for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a terrible attitude for no reason, nor will they act the way this woman did. Unacceptable.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in-flight WiFi. Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay that much for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a shitty attitude for no reason, nor will they act the way this woman did. Unacceptable.

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.

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.

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.

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.
8/8Thu
3 stops
50h 30mBOS-EAS
$400
8/8Thu
1 stopVueling
27h 30mBOS-EAS
$435
8/8Thu
2 stops
15h 55mBOS-EAS
$446
7/13Sat
2 stopsIberia
56h 55mBOS-EAS
$603
7/13Sat
3 stops
39h 15mBOS-EAS
$646
7/13Sat
1 stopIberia
10h 00mBOS-EAS
$798
7/13Sat
1 stopAmerican Airlines
10h 00mBOS-EAS
$810
7/3Wed
2 stopsIberia
27h 45mBOS-EAS
$935
7/3Wed
1 stopVueling
12h 45mBOS-EAS
$974
7/2Tue
2 stopsAvianca
38h 35mBOS-EAS
$1,876

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Boston - San Sebastian Flights

Departure:

Boston (undefined)United States

Destination:

San Sebastian (EAS)Spain

Return flight deals:

San Sebastian - Boston

Cabin classes: