$399 Cheap Flights from San Sebastian (EAS) to Boston (BOS)

View $399 flight on Thu, Feb 12, 2026Opens in a new window

Popular airlines from San Sebastian (EAS) to Logan International Airport (BOS)

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

Prices were available within the past 7 days and start at $399 for one-way flights and $810 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Thu, Nov 6 - Sat, Nov 15
EAS
San Sebastián
BOS
Boston
$810 Roundtrip, found 3 days ago
$810
Roundtrip
found 3 days ago
Select Iberia flight, departing Thu, Nov 6 from San Sebastián to Boston, returning Sat, Nov 15, priced at $810 found 3 days ago
Iberia
Thu, Nov 6 - Sat, Nov 15
EAS
San Sebastián
BOS
Boston
$814 Roundtrip, found 3 days ago
$814
Roundtrip
found 3 days ago
Select Iberia flight, departing Thu, Nov 6 from San Sebastián to Boston, returning Sat, Nov 15, priced at $814 found 3 days ago
Iberia
Thu, Nov 6 - Sat, Nov 15
EAS
San Sebastián
BOS
Boston
$819 Roundtrip, found 3 days ago
$819
Roundtrip
found 3 days ago
Select Iberia flight, departing Thu, Nov 6 from San Sebastián to Boston, returning Sat, Nov 15, priced at $819 found 3 days ago
Iberia
Thu, Nov 6 - Sat, Nov 15
EAS
San Sebastián
BOS
Boston
$866 Roundtrip, found 3 days ago
$866
Roundtrip
found 3 days ago
Select Iberia flight, departing Thu, Nov 6 from San Sebastián to Boston, returning Sat, Nov 15, priced at $866 found 3 days ago
Iberia
Thu, Nov 6 - Sat, Nov 15
EAS
San Sebastián
BOS
Boston
$871 Roundtrip, found 3 days ago
$871
Roundtrip
found 3 days ago
Select Iberia flight, departing Thu, Nov 6 from San Sebastián to Boston, returning Sat, Nov 15, priced at $871 found 3 days ago
Iberia
Thu, Nov 6 - Sat, Nov 15
EAS
San Sebastián
BOS
Boston
$891 Roundtrip, found 3 days ago
$891
Roundtrip
found 3 days ago
Select Iberia flight, departing Thu, Nov 6 from San Sebastián to Boston, returning Sat, Nov 15, priced at $891 found 3 days ago
Iberia
Thu, Nov 6 - Sat, Nov 15
EAS
San Sebastián
BOS
Boston
$900 Roundtrip, found 3 days ago
$900
Roundtrip
found 3 days ago
Select Iberia flight, departing Thu, Nov 6 from San Sebastián to Boston, returning Sat, Nov 15, priced at $900 found 3 days ago
Iberia
Fri, Jul 3 - Sat, Jul 11
EAS
San Sebastián
BOS
Boston
$971 Roundtrip, found 5 hours ago
$971
Roundtrip
found 5 hours ago
Select Iberia flight, departing Fri, Jul 3 from San Sebastián to Boston, returning Sat, Jul 11, priced at $971 found 5 hours ago
Iberia
Fri, Jul 3 - Sat, Jul 11
EAS
San Sebastián
BOS
Boston
$1,003 Roundtrip, found 5 hours ago
$1,003
Roundtrip
found 5 hours ago
Select Iberia flight, departing Fri, Jul 3 from San Sebastián to Boston, returning Sat, Jul 11, priced at $1,003 found 5 hours ago
American Airlines
Fri, Jul 3 - Sat, Jul 11
EAS
San Sebastián
BOS
Boston
$1,038 Roundtrip, found 5 hours ago
$1,038
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Fri, Jul 3 from San Sebastián to Boston, returning Sat, Jul 11, priced at $1,038 found 5 hours ago

Frequently asked questions

How much does a flight from San Sebastian Airport (EAS) to Logan Intl. Airport (BOS) cost?
Secure a cheap one-way flight from $399 or cheap return flight from $810 from San Sebastian Airport (EAS) to Logan Intl. Airport (BOS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from San Sebastian Airport (EAS) to Logan Intl. Airport (BOS)?
November is the least expensive month to fly from EAS to BOS. Traveling outside of peak seasons is often the key to landing a great deal.
What is the cheapest airline that flies from San Sebastian Airport (EAS) to Logan Intl. Airport (BOS)?
To find the cheapest airline that'll fly you from EAS to BOS, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from San Sebastian Airport (EAS) to Logan Intl. Airport (BOS)?
You'll need to book a flight with a layover when traveling from San Sebastian Airport (EAS) to Logan Intl. Airport (BOS). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from EAS to BOS?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Sebastian Airport (EAS) to Logan Intl. Airport (BOS)?
To reach Logan Intl. Airport (BOS) on schedule, book a flight that leaves San Sebastian Airport (EAS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Sebastian Airport (EAS) to Logan Intl. Airport (BOS) last-minute?
Booking your ticket from EAS to BOS shortly before your journey is generally more expensive. But if there's some wiggle room with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book an EAS to BOS flight and hotel package?
Securing an EAS to BOS flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our impressive range of stays and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Sebastian Airport (EAS) to Logan Intl. Airport (BOS)?
If you booked your EAS to BOS flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

Travel information

Origin airport
San Sebastian
Destination airport
Logan Intl.
Airlines serving
American Airlines, Iberia
Roundtrip price
$809
Distance
3400 mi

Book with confidence

San Sebastian to Boston Flights

The cheapest times to fly from San Sebastian to Boston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Sebastian to Boston are during the month of November. You can find some of the cheapest flights from San Sebastian to Boston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Sebastian to Boston

Sunday is one of the best days to book for cheap flights from San Sebastian to Boston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Sebastian to Boston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Sebastian to Boston in 2025. You can also book with separate airlines for your outbound and return journeys, from $399 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Sebastian to Boston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Sebastian to Boston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Sebastian to Boston Flights

Explore a world of travel with Expedia

*Available to One Key members.