BOS - EAS

$395 Find Cheap Flights from Boston to San Sebastian - Compare and Save

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Everything you should know

Cheapest round-trip
$846
Typical prices: $695-$1,208
Multiple Airlines
Sun 11/11Sun 11/18
BOS - EAS • 2 stops
Cheapest one-way
$395
Typical prices: $487-$659
Iberia
Sat 10/27
BOS - EAS • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Boston and San Sebastian. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
May
Cheapest • 30% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Barcelona-El Prat (BCN)
Cheapest • Avg $740 (round-trip)
Madrid Barajas (MAD)
Shortest trip • 13h 17m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to San Sebastian (BOS-EAS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to San Sebastian

Wed, Nov 11 - Wed, Nov 18
Multiple Airlines Logo
5:15 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
14h 20m2 stops Dublin Barcelona-El Prat
Multiple Airlines Logo
2:10 pm - 2:30 pmEAS  San Sebastián-BOS Boston Logan Intl
30h 20m2 stops Barcelona-El Prat Lisbon Humberto Delgado
$846Multiple Airlines
Wed, Nov 11 - Wed, Nov 18
Multiple Airlines Logo
8:00 pm - 1:00 pmBOS  Boston Logan Intl-EAS San Sebastián
11h 00m1 stop Madrid Barajas
Multiple Airlines Logo
9:20 am - 11:44 pmEAS  San Sebastián-BOS Boston Logan Intl
20h 24m2 stops Madrid Barajas New York John F Kennedy Intl
$885Multiple Airlines
Tue, Nov 24 - Tue, Dec 1
Multiple Airlines Logo
5:15 pm - 8:50 pmBOS  Boston Logan Intl-EAS San Sebastián
21h 35m2 stops Dublin Madrid Barajas
Multiple Airlines Logo
9:30 pm - 6:25 pmEAS  San Sebastián-BOS Boston Logan Intl
26h 55m1 stop Madrid Barajas
$890Multiple Airlines
Mon, Nov 9 - Mon, Nov 16
Multiple Airlines Logo
10:10 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
33h 25m3 stops Lisbon Humberto Delgado Rome Fiumicino Barcelona-El Prat
Multiple Airlines Logo
2:10 pm - 2:45 pmEAS  San Sebastián-BOS Boston Logan Intl
30h 35m3 stops Barcelona-El Prat Rome Fiumicino Lisbon Humberto Delgado
$891Multiple Airlines
Thu, Nov 26 - Tue, Dec 1
Multiple Airlines Logo
5:15 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
14h 20m2 stops Dublin Barcelona-El Prat
Multiple Airlines Logo
9:30 pm - 6:25 pmEAS  San Sebastián-BOS Boston Logan Intl
26h 55m1 stop Madrid Barajas
$914Multiple Airlines
Wed, Nov 11 - Wed, Nov 18
Multiple Airlines Logo
5:15 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
14h 20m2 stops Dublin Barcelona-El Prat
Multiple Airlines Logo
2:10 pm - 8:00 pmEAS  San Sebastián-BOS Boston Logan Intl
35h 50m3 stops Barcelona-El Prat Lisbon Humberto Delgado Ponta Delgada Nordela
$914Multiple Airlines
Fri, Nov 27 - Tue, Dec 1
Multiple Airlines Logo
5:15 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
14h 20m2 stops Dublin Barcelona-El Prat
Multiple Airlines Logo
9:30 pm - 6:25 pmEAS  San Sebastián-BOS Boston Logan Intl
26h 55m1 stop Madrid Barajas
$914Multiple Airlines
Mon, Nov 9 - Mon, Nov 16
Multiple Airlines Logo
7:15 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
36h 20m2 stops Madrid Barajas Barcelona-El Prat
Multiple Airlines Logo
2:10 pm - 6:25 pmEAS  San Sebastián-BOS Boston Logan Intl
34h 15m2 stops Barcelona-El Prat Madrid Barajas
$916Multiple Airlines
Wed, Nov 11 - Wed, Nov 18
Iberia Logo
8:00 pm - 1:00 pmBOS  Boston Logan Intl-EAS San Sebastián
11h 00m1 stop Madrid Barajas
Iberia Logo
1:40 pm - 6:25 pmEAS  San Sebastián-BOS Boston Logan Intl
10h 45m1 stop Madrid Barajas
$932Iberia
Sat, Nov 28 - Tue, Dec 1
Iberia Logo
8:00 pm - 4:55 pmBOS  Boston Logan Intl-EAS San Sebastián
14h 55m1 stop Madrid Barajas
Iberia Logo
9:30 pm - 6:25 pmEAS  San Sebastián-BOS Boston Logan Intl
26h 55m1 stop Madrid Barajas
$953Iberia
Booking Insights

Price, demand and travel trends for Boston to San Sebastian flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What's the cheapest day of the week to fly from Boston to San Sebastian?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Boston to San Sebastian. It’s 17% cheaper than the average day, while Thursday is the most expensive, with prices 88% higher.

What’s the cheapest month to fly from Boston to San Sebastian?

•May is the cheapest month to fly from Boston to San Sebastian at $616 round-trip.
•July ($1,628) and December ($1,211) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 164% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Boston to San Sebastian flights

Low season

January

Cheapest flight

$395
Beat the crowds with an average 53% drop in travelers.
One-way 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

Your Boston to San Sebastian flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Boston to San Sebastian?

    Only Economy Class is available on flights from Boston to San Sebastian.

  • How long is a flight from Boston to San Sebastian?

    A nonstop flight from Boston to San Sebastian takes 00m, covering 3,398 miles.

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

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Boston to San Sebastian flight?

    Round-trip flights from Boston to San Sebastian range from $695 to $1,208, with an average of $874 over the past 12 months. Anything below $695 counts as a good deal.

  • Have flight prices from Boston to San Sebastian changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $846 to $7,139. That means the highest observed fare was about 8x higher than the lowest one.

  • How are flight prices from Boston to San Sebastian looking right now?

    One-way fares from Boston to San Sebastian are currently lower than usual. Average one-way flight prices are about $416, which is 19% below the typical average for this route.

  • What car rental options are available at San Sebastián Airport (EAS)?

    San Sebastián Airport (EAS) hosts 5 major car rental companies, with daily rates starting from around $13 for economy cars. Top options include:

    • Enterprise Rent-A-Car
    • Alamo
    • Hertz
    • keddy by Europcar
    • Europcar

  • Which airports can I use when flying from Boston to San Sebastian?

    Flights from Boston to San Sebastian usually depart from Boston Logan Intl (BOS) and arrive at San Sebastián (EAS).

  • Which airports do connecting flights from Boston to San Sebastian pass through?

    Connecting flights from Boston to San Sebastian most commonly pass through:

    • Madrid Barajas (MAD) - 92% of one-stop connections
    • Barcelona-El Prat (BCN) - 8% of one-stop connections

  • Can I save money by using flexible dates for flights from Boston to San Sebastian?

    Yes. Flexible dates can save you up to 56% on flights from Boston to San Sebastian. Wednesday is the cheapest departure day at $727 round-trip on average, while Thursday is the most expensive at $1,645, a difference of $918.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Boston to San Sebastian?

    Flying via Madrid Barajas (MAD) gives the shortest average 1-stop total travel time at 13h 17m, compared with 22h 54m via Barcelona-El Prat (BCN).

  • What is the time difference between Boston and San Sebastian?

    San Sebastian is 6 hours ahead of Boston (Central European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in San Sebastian?

    Some of the most popular sights in San Sebastian are Playa de Zurriola, Kursaal Palace San Sebastián and Palacio de Miramar. These are among the most viewed places in San Sebastian on KAYAK.

Your guide to booking Boston to San Sebastian flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Thursday. On this route, Wednesday flights average $727, about $918 less than Thursday fares (56% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Boston to San Sebastian trip for May. Fares historically average $616 round-trip in that month - typically $1,012 less than the most expensive month, which is July (based on the last 12 months).

More options for your flight from Boston to San Sebastian

Complete your trip to San Sebastian with a hotel stay or car rental

Car rentals in San Sebastian
Hotels in San Sebastian
Vacations in San Sebastian