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$740+ Cheap flights from San Sebastian (EAS) to Boston (BOS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
EAS — BOS
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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Cheap flight deals from San Sebastian to Boston

Cheapest flights from San Sebastian to Boston
Explore the most affordable flight options available from San Sebastian to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/262:05 pmEAS - BOS
2 stops30h 30mMultiple Airlines
mar. 12/3010:40 pmBOS - EAS
1 stop32h 50mMultiple Airlines
Deal found 12/10$1,025
This American Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/269:20 amEAS - BOS
1 stop16h 30mAmerican Airlines
mar. 12/303:30 pmBOS - EAS
2 stops15h 30mAmerican Airlines
Deal found 12/10$1,247
This Cheapflightsfares deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/189:20 amEAS - BOS
1 stop11h 55mIberia
vie. 12/269:20 pmBOS - EAS
1 stop9h 40mIberia
Deal found 12/10$1,553
This Cheapflightsfares deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/181:40 pmEAS - BOS
2 stops14h 15mMultiple Airlines
vie. 12/269:20 pmBOS - EAS
1 stop9h 40mMultiple Airlines
Deal found 12/10$1,755

Find flight deals from San Sebastian to Boston

Discover tips and strategies to find the most affordable flight options for your journey from San Sebastian (EAS) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated diciembre 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$740
(Expedia)
Provider with most accurate pricing for San Sebastián-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for San Sebastián-Boston Logan Intl flights.
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From San Sebastián to Boston Logan Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from San Sebastian to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 12, 2025.
Use the filters below to find and compare flights from San Sebastian to Boston that are best for you.

Fly from

San Sebastian

Fly to

Boston

Route

Depart

Return

Price

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

mié. 3/11

9:20 am-4:15 pm

1 stop11h 55m

Boston Logan Intl

mié. 3/18

10:20 pm-1:00 pm

1 stop9h 40m

$740

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

mié. 3/11

2:05 pm-3:35 pm

2 stops30h 30m

Boston Logan Intl

mié. 3/18

7:05 pm-1:30 pm

2 stops13h 25m

$800

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

jue. 1/29

2:05 pm-8:55 pm

1 stop12h 50m

Boston Logan Intl

lun. 2/2

12:16 pm-8:40 am

2 stops14h 24m

$818

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

jue. 1/29

9:20 am-3:15 pm

1 stop11h 55m

Boston Logan Intl

lun. 2/2

4:45 pm-8:40 am

1 stop9h 55m

$892

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

  • Most accurate provider: When it comes to deals on San Sebastian-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Sebastian-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Sebastian-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Sebastian-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Sebastian-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Sebastian to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from San Sebastian with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from San Sebastian to Boston?

Currently, September is the cheapest month in which you can book a flight from San Sebastian to Boston (average of $227). Flying from San Sebastian to Boston in July is currently the most expensive (average of $606). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from San Sebastian to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Airlines like Iberia fly from San Sebastian to Boston in about 11h 55m. The time it takes to get you to your destination can typically vary by up to . The distance from San Sebastian to Boston is about 3398 mi.

  • Can I find deals for flights from San Sebastian to Boston that include hotel bookings?

    Yes. In addition to deals on San Sebastian to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Sebastian to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Sebastian to Boston.

  • Can I find deals for business class flights from San Sebastian to Boston?

    Yes. Cheapflights offers flight deals from San Sebastian to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Sebastian to Boston?

    Currently, September is the cheapest month in which you can book a flight from San Sebastian to Boston (average of $227). Flying from San Sebastian to Boston in July is currently the most expensive (average of $606). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Cambridge
Medford
Hampton Beach
Watertown
Seabrook
Seekonk
Cranston
Lincoln
Lowell
Smithfield
Peabody
Brockton
Quincy
York Beach
Warwick
Londonderry
Swansea
Old Orchard Beach
Waltham
Chelsea

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