HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boston

$728+ 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
EAS — BOS
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Sebastian to Boston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find 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 October 29, 2025.

This American Airlines deal was found by Cheapflights users on 10/29. 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.
Fri 11/149:20 amEAS - BOS
1 stop11h 55mAmerican Airlines
Tue 11/1811:56 amBOS - EAS
2 stops14h 44mAmerican Airlines
Deal found 10/29$811
This Expedia deal was found by Cheapflights users on 10/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/119:20 amEAS - BOS
1 stop11h 55mIberia
Thu 12/188:13 amBOS - EAS
2 stops18h 27mIberia
Deal found 10/27$1,085
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Thu 12/119:20 amEAS - BOS
1 stop11h 55mAmerican Airlines
Thu 12/184:45 pmBOS - EAS
1 stop9h 55mAmerican Airlines
Deal found 10/27$1,097
This Mytrip deal was found by Cheapflights users on 10/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/112:05 pmEAS - BOS
2 stops30h 30mMultiple Airlines
Thu 12/1810:56 amBOS - EAS
3 stops44h 34mMultiple Airlines
Deal found 10/27$1,363

Cheap 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 October 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$728
(Iberia)
Provider with most accurate pricing for San Sebastián-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Sebastián-Boston Logan Intl flights.
Search Deals
From San Sebastián to Boston Logan Intl
Search Deals

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 October 29, 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

Thu 4/2

9:05 am-9:05 pm

1 stop18h 00m

Boston Logan Intl

Mon 4/6

10:50 pm-5:20 pm

1 stop12h 30m

$728

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Fri 11/14

9:20 am-3:15 pm

1 stop11h 55m

Boston Logan Intl

Tue 11/18

11:56 am-8:40 am

2 stops14h 44m

$811

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

  • 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 $600). 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 and American Airlines 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 6h 05m. The distance from San Sebastian to Boston is about 3398 mi. This flight may include one or multiple stops.

  • 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 $600). 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
Lincoln
Lowell
Smithfield
Cranston
Chestnut Hill
Peabody
Quincy
York Beach
Warwick
Swansea
Old Orchard Beach
Brockton
Waltham
Chelsea

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Sebastian to Boston

See prices for flight routes from nearby airports that may be better suited for you.
Bilbao to Boston flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.