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BOS - EAS

$585 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 9/4. 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
Sun 6/9
Sun 6/16

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 43,895,468 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 - 1:00 pmBOS-EAS
14h 05m1 stop
8:30 am - 9:40 pmEAS-BOS
19h 10m1 stop
$660Iberia
Find Deal
Thu, Oct 31 - Sat, Nov 9
5:55 pm - 1:00 pmBOS-EAS
14h 05m1 stop
9:20 am - 9:40 pmEAS-BOS
18h 20m2 stops
$664Iberia
Find Deal
Thu, Oct 31 - Sat, Nov 9
1:32 pm - 1:00 pmBOS-EAS
18h 28m2 stops
9:20 am - 9:40 pmEAS-BOS
18h 20m2 stops
$759Iberia
Find Deal
Thu, Oct 31 - Sat, Nov 9
4:40 pm - 1:00 pmBOS-EAS
14h 20m1 stop
9:30 pm - 11:35 pmEAS-BOS
32h 05m2 stops
Mon, Sep 9 - Mon, Sep 16
7:10 pm - 8:50 pmBOS-EAS
19h 40m2 stops
9:30 pm - 4:51 pmEAS-BOS
25h 21m2 stops
Mon, Sep 9 - Mon, Sep 16
11:39 am - 8:40 amBOS-EAS
15h 01m2 stops
9:20 am - 3:05 pmEAS-BOS
11h 45m1 stop
$963Iberia
Find Deal
Sun, May 26 - Tue, Jun 4
10:55 pm - 5:20 pmBOS-EAS
12h 25m1 stop
1:30 pm - 9:10 pmEAS-BOS
13h 40m1 stop
$1,018Vueling
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Thu, Jul 18 - Mon, Jul 22
11:05 pm - 5:20 pmBOS-EAS
12h 15m1 stop
6:30 pm - 9:15 pmEAS-BOS
32h 45m1 stop
$1,086Vueling
Find Deal
Sun, May 26 - Tue, Jun 4
7:18 am - 8:40 amBOS-EAS
19h 22m2 stops
9:20 am - 12:16 amEAS-BOS
20h 56m2 stops
$1,168American Airlines
Find Deal
Thu, Jul 18 - Mon, Jul 22
7:20 am - 8:50 pmBOS-EAS
31h 30m2 stops
9:10 pm - 11:55 amEAS-BOS
20h 45m2 stops
$1,177British Airways
Find Deal
Sun, May 26 - 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 ($674) and Iberia ($1,399). The cheapest round-trip tickets were found on Iberia ($660) and Vueling ($1,018).

Good to know

Low season

October

High season

June

Cheapest flight

$585
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 $585 for a one-way ticket and $660 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 14665 reviews
7.2Comfort
7.6Boarding
7.1Entertainment
6.6Food
8.0Crew
Airline reviews

Worst situation ever! I booked my tickets for this trip on Alaska Airlines. I guess AA is a partner and we flew nonstop from Eugene to PHX on an AA jet. I had to pay for luggage from PHX to EUG. And this was an Alaska Airlines reservation paid for with Alaska airlines credit card! Got to the PHX airport and was not able to check bags because of some weird issue with the AA software. My reservation had to be the-entered by the agent. I will never pick another American Airlines flight on the Alaska Airlines website. While on vacation, I tried to upgrade our seats for the trip home. The request just buffered and never went through. I tried four times and was charged four times on my credit card. The card was charged but the seats were never changed. What a wreck!

10.0 ExcellentLee Anne, May 2024PHX - EUG
Read more about American Airlines reviews

Worst situation ever! I booked my tickets for this trip on Alaska Airlines. I guess AA is a partner and we flew nonstop from Eugene to PHX on an AA jet. I had to pay for luggage from PHX to EUG. And this was an Alaska Airlines reservation paid for with Alaska airlines credit card! Got to the PHX airport and was not able to check bags because of some weird issue with the AA software. My reservation had to be the-entered by the agent. I will never pick another American Airlines flight on the Alaska Airlines website. While on vacation, I tried to upgrade our seats for the trip home. The request just buffered and never went through. I tried four times and was charged four times on my credit card. The card was charged but the seats were never changed. What a wreck!

Left from gate 30 minutes before flight. Never been late to a flight ever. It says 15 minutes before explicitly on the ticket.

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

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.

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.

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.

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.
9/4Wed
3 stops
43h 03mBOS-EAS
$585
7/13Sat
2 stops
27h 05mBOS-EAS
$656
9/4Wed
1 stopVueling
12h 45mBOS-EAS
$674
9/4Wed
2 stops
19h 30mBOS-EAS
$843
7/13Sat
1 stopVueling
11h 50mBOS-EAS
$897
7/13Sat
3 stopsIberia
62h 20mBOS-EAS
$1,399
9/4Wed
1 stopIberia
12h 45mBOS-EAS
$1,730
9/4Wed
2 stopsIberia
15h 20mBOS-EAS
$1,735
9/3Tue
2 stopsAvianca
38h 35mBOS-EAS
$2,398
9/3Tue
2 stopsAvianca
26h 25mBOS-EAS
$2,401

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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: