HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boston

$501+ Cheap flights from San Sebastian (EAS) to Boston (BOS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
EAS — BOS
Jul 17 — Jul 241
Fri 7/17
Fri 7/24
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.

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 June 17, 2026.

This Iberia deal was found by Cheapflights users on 6/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:10 am
EAS
-
BOS
2 stops20h 18m
Iberia
Sun 10/411:35 pm
BOS
-
EAS
1 stop26h 45m
Iberia
Deal found 6/12$591

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 June 17, 2026.

Round-trip from

$591
(Iberia)

One-way from

$501
(Kiwi.com)
From San Sebastián to Boston Logan Intl
Search Deals
One-way flight 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 June 17, 2026.
Use the filters below to find and compare flights from San Sebastian to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Thu 10/1

9:10 am-11:28 pm

2 stops20h 18m

Boston Logan Intl

Sun 10/4

11:35 pm-8:20 am

1 stop26h 45m

$591
Cheapest one-way

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 9/30

9:30 pm-8:20 pm

2 stops28h 50m

$501

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 9/30

9:20 am-7:30 pm

1 stop16h 10m

$503

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Sat 8/22

9:30 pm-7:15 pm

3 stops51h 45m

$529

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Sat 8/29

9:30 pm-4:10 pm

1 stop24h 40m

$533

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Sat 8/29

9:30 pm-4:10 pm

1 stop24h 40m

$538
Quickest one-way

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Sat 10/10

1:40 pm-7:50 pm

1 stop12h 10m

$561

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Sorted by cheapest first

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.

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 20h 18m. 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.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Waltham
Cambridge
Concord
Brockton
Watertown
Hampton Beach
Seekonk
Cranston
Warwick
Peabody
Auburn
York Beach
Chelsea
Londonderry
Dedham
Swansea
Old Orchard Beach
Lowell
Smithfield
Braintree

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.