BOS - EAS

$520 Find Cheap Flights from Boston to San Sebastian - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$520
Typical prices: $705-$1,211
Iberia
Sat 12/8Sat 12/15
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 • 32% 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 36m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Sebastian!
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

Tue, Dec 8 - Tue, Dec 15
Iberia Logo
9:30 pm - 8:50 pmBOS  Boston Logan Intl-EAS San Sebastián
17h 20m1 stop Madrid Barajas
Iberia Logo
1:40 pm - 6:25 pmEAS  San Sebastián-BOS Boston Logan Intl
10h 45m1 stop Madrid Barajas
$520Iberia
Tue, Dec 1 - Tue, Dec 8
Iberia Logo
8:00 pm - 1:00 pmBOS  Boston Logan Intl-EAS San Sebastián
11h 00m1 stop Madrid Barajas
Iberia Logo
9:20 am - 8:00 pmEAS  San Sebastián-BOS Boston Logan Intl
16h 40m1 stop Madrid Barajas
$526Iberia
Sun, Dec 6 - Sun, Dec 13
Multiple Airlines Logo
6:00 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
13h 35m2 stops Lisbon Humberto Delgado Barcelona-El Prat
Multiple Airlines Logo
6:10 pm - 7:55 pmEAS  San Sebastián-BOS Boston Logan Intl
31h 45m2 stops Barcelona-El Prat Lisbon Humberto Delgado
$842Multiple Airlines
Sun, Dec 6 - Sun, Dec 13
Multiple Airlines Logo
6:00 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
13h 35m2 stops Lisbon Humberto Delgado Barcelona-El Prat
Multiple Airlines Logo
6:10 pm - 7:55 pmEAS  San Sebastián-BOS Boston Logan Intl
31h 45m2 stops Barcelona-El Prat Lisbon Humberto Delgado
$858Multiple Airlines
Sun, Dec 6 - Sun, Dec 13
Multiple Airlines Logo
6:00 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
13h 35m2 stops Lisbon Humberto Delgado Barcelona-El Prat
Multiple Airlines Logo
9:30 pm - 6:25 pmEAS  San Sebastián-BOS Boston Logan Intl
26h 55m1 stop Madrid Barajas
$888Multiple Airlines
Sun, Dec 6 - Sun, Dec 13
Multiple Airlines Logo
6:00 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
13h 35m2 stops Lisbon Humberto Delgado Barcelona-El Prat
Multiple Airlines Logo
6:10 pm - 8:00 pmEAS  San Sebastián-BOS Boston Logan Intl
31h 50m3 stops Barcelona-El Prat Porto Ponta Delgada Nordela
$888Multiple Airlines
Thu, Feb 18 - Wed, Mar 3
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
$901Iberia
Thu, Feb 18 - Tue, Mar 2
Iberia Logo
8:00 pm - 1:00 pmBOS  Boston Logan Intl-EAS San Sebastián
11h 00m1 stop Madrid Barajas
Iberia Logo
9:20 am - 6:25 pmEAS  San Sebastián-BOS Boston Logan Intl
15h 05m1 stop Madrid Barajas
$901Iberia
Sun, Dec 6 - Sun, Dec 13
Multiple Airlines Logo
6:00 pm - 1:35 pmBOS  Boston Logan Intl-EAS San Sebastián
13h 35m2 stops Lisbon Humberto Delgado Barcelona-El Prat
Multiple Airlines Logo
9:30 pm - 6:25 pmEAS  San Sebastián-BOS Boston Logan Intl
26h 55m1 stop Madrid Barajas
$902Multiple Airlines
Tue, Dec 8 - Tue, Dec 15
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
$919Multiple Airlines
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.

How much is a round-trip flight from Boston to San Sebastian?

Round-trip flights from Boston to San Sebastian typically range from $705 to $1,211. The lowest price found in the past 5 days was $520, on Iberia.

Find deals

Key details for Boston to San Sebastian flights

Low season

November

Cheapest flight

$520
Beat the crowds with an average 92% drop in travelers.
The most popular month to fly with an average 120% increase in travelers.
Round-trip 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 $705 to $1,211, with an average of $911 over the past 12 months. Anything below $705 counts as a good deal.

  • 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
    • Hertz
    • Alamo
    • keddy by Europcar
    • Dollar

  • 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) - 91% of one-stop connections
    • Barcelona-El Prat (BCN) - 9% 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 57% on flights from Boston to San Sebastian. Saturday is the cheapest departure day at $709 round-trip on average, while Friday is the most expensive at $1,628, a difference of $919.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • 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 36m, compared with 22h 54m via Barcelona-El Prat (BCN).

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

    San Sebastian is 5 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 Saturday departure and avoid flying on Friday. On this route, Saturday flights average $709, about $919 less than Friday 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