BOS - EAS

$353 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 7/10. 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 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
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Cheap Flights from Boston to San Sebastian

 
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.

Recent round-trip flight deals from Boston to San Sebastian

KAYAK's recommended round-trip deals from the most popular airlines that fly from Boston to San Sebastian.
Discover the best prices for you by selecting your travel dates on KAYAK.
Vueling Logo
11:00 pm - 8:30 amBOS-EAS
27h 30m1 stop
Vueling Logo
1:30 pm - 9:15 pmEAS-BOS
13h 45m1 stop
$629Vueling
Find Deal
Wed, Aug 20 - Tue, Aug 26
 Logo
4:30 pm - 8:40 amBOS-EAS
10h 10m1 stop
 Logo
9:30 pm - 11:59 pmEAS-BOS
32h 29m2 stops
Wed, Aug 20 - Tue, Aug 26
 Logo
9:55 pm - 8:40 amBOS-EAS
28h 45m2 stops
 Logo
9:30 pm - 11:59 pmEAS-BOS
32h 29m2 stops
Wed, Aug 20 - Tue, Aug 26
Vueling Logo
11:00 pm - 8:10 amBOS-EAS
27h 10m1 stop
Vueling Logo
1:30 pm - 9:15 pmEAS-BOS
13h 45m1 stop
$695Vueling
Find Deal
Sat, Aug 2 - Tue, Aug 12
Iberia Logo
11:00 pm - 5:20 pmBOS-EAS
12h 20m1 stop
Iberia Logo
9:25 am - 9:15 pmEAS-BOS
17h 50m1 stop
$730Iberia
Find Deal
Sat, Aug 23 - Sun, Aug 31
Iberia Logo
4:30 pm - 8:40 amBOS-EAS
10h 10m1 stop
Iberia Logo
9:30 pm - 2:55 pmEAS-BOS
47h 25m2 stops
$732Iberia
Find Deal
Sun, Aug 3 - Sun, Aug 10
American Airlines Logo
1:20 pm - 8:40 amBOS-EAS
13h 20m2 stops
American Airlines Logo
1:40 pm - 7:50 pmEAS-BOS
12h 10m1 stop
$821American Airlines
Find Deal
Wed, Jun 4 - Sun, Jun 8
American Airlines Logo
9:30 am - 8:40 amBOS-EAS
17h 10m2 stops
American Airlines Logo
1:40 pm - 10:19 pmEAS-BOS
14h 39m2 stops
$831American Airlines
Find Deal
Wed, Jun 4 - Sun, Jun 8
British Airways Logo
7:25 pm - 2:05 pmBOS-EAS
36h 40m2 stops
British Airways Logo
1:40 pm - 5:17 pmEAS-BOS
33h 37m2 stops
$1,456British Airways
Find Deal
Sun, Jun 22 - Sun, Jun 29
British Airways Logo
7:25 am - 2:05 pmBOS-EAS
24h 40m2 stops
British Airways Logo
1:40 pm - 5:17 pmEAS-BOS
33h 37m2 stops
$1,460British Airways
Find Deal
Mon, Jun 23 - Sun, Jun 29
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KAYAK's insights & trends for Boston to San Sebastian flights

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 round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Boston to San Sebastian were found on Vueling ($629) and Iberia ($730).

Good to know

Low seasonMay
High seasonAugust
Cheapest flight$353
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 13% lower on average.
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 $353 for a one-way ticket and $629 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 $836 and an overall rating of 7.2, American Airlines is the most popular choice. Iberia is also a great choice for the route, with an average price of $877 and an overall rating of 7.0.

  • 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.

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.
7.2
American AirlinesOverall score based on 10000 reviews
7.2Comfort
7.5Boarding
6.9Entertainment
6.5Food
8.0Crew
Airline reviews

Several delays. Next flight was worse. Did not arrive home until 2am PT

4.0 OkayDuncan, Apr 2025SAV - DFW
Read more American Airlines reviews

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

Flight from Costa Rica to Madrid was excellent. Good food and service. The flight from Madrid to Brussels was very poor . No food , no entertainment, no usb … Total package was quite expensive so you should give same service on the second flight

We travelled with Level, which is a subsidiary of Iberia. They mixed up all our seats, downgraded few from premium economy fo economy. The crew were not professional, they seem to be in a rush! Also some with an attitude

business class food was pretty average otherwise it was a good experience

Everything OK , except the plane left more than an hour late so I couldn’t participate in an excursion I had that morning in Brcelona

Flight from Madrid to Dakar had no onboard entertainment for a business class. Not even a single screen . That was disappointing. The WiFi only worked for the first 45 mins of the flight.

I paid to upgrade to Business Class. The queue to check in at the Business Class aisle was full of people without Business Class tickets, the fast-track immigration line was “closed” but the representative opened it up for his friends, regardless (there was a lot of fist-bumping), and the lounge was an absolute mess…..4 staff sitting playing with their phones while every table had dirty plates and glasses waiting to be cleared…..and the least said about the rude lady on the reception desk at the lounge , the better!

Great flight, short and good attention. Didn't took any food so can't say thing about it

A 13 hour flight with no food apart from what they offered from a menu you had to pay for. On top of that, there were no blankets, so during the flight when the cabin temperature dropped, everyone was very cold. Neither of these things were highlighted at the time of booking. This is the worst long-haul flight I’ve ever encountered.

Horrible. Paid for seats for my family. Iberia changed planes and never notified us that the seats we paid extra for did not even exist on the plane. We were randomly placed on the plane. Thankfully, we were seated together. Upon boarding, my youngest daughter was pulled from the line and they just arbitrarily changed her seat 7 rows back from the rest of the family. I had to wait at the gate while they tried to see us back together. One of the most uncomfortable small spaces on a plane I’ve ever experienced. When I called Iberia, they first told me that no mistake was made that the plane was never changed. Yet my receipt for my paid seats were for rows that did not even exist on this type of plane we were getting on. They said that they would reimburse my money and I would get an email, but I’ve never received any information or emails regarding a refund for the seats that I had paid extra for. Then when we arrived in Madrid, one of the pieces of luggage that we had checked in was damaged to the point that the handle that was stowed in to the luggage was broken off by the crew members handling the luggage. The crew on the plane was very nice, but as far as the rest of the experience, I would be very hesitant to ever use Iberia again.

Bad business class. Staff totally not helping. Lights and chargers not working

Everything you need to know for your flight from Boston to San Sebastian

Information on your arrival and departure airports

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