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San Sebastian

$242+ Cheap flights from Massachusetts to San Sebastian (EAS)

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — EAS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Massachusetts to San Sebastian

Keep the following information in mind while searching for Massachusetts to San Sebastian flight deals. Data was last updated September 15, 2025.

Round-trip from

$428
(Iberia)

One-way from

$242
(Kiwi.com)

Popular in

February

Cheapest in

October

Average price

$647
From Massachusetts to San Sebastián
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One-way flight from Massachusetts to San Sebastián
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Highest demand for flights based on searches. 23% potential increase in price ($273 potential increase over avg. RT price).
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Cheapest flight prices on average. 11% potential price decrease ($92 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Massachusetts to San Sebastian

Cheapest flights from Massachusetts to San Sebastian
Explore the most affordable flight options available from Massachusetts to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Iberia deal was found by Cheapflights users on 9/14. 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.
Mon 10/134:30 pmBOS - EAS
1 stop10h 10mIberia
Mon 10/209:30 pmEAS - BOS
2 stops25h 45mIberia
Deal found 9/14$428
This Iberia deal was found by Cheapflights users on 9/15. 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 10/305:45 pmBOS - EAS
1 stop9h 55mIberia
Thu 11/69:30 pmEAS - BOS
1 stop23h 45mIberia
Deal found 9/15$478
This Travelocity deal was found by Cheapflights users on 9/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1310:00 pmBOS - EAS
2 stops28h 40mMultiple Airlines
Mon 10/209:30 pmEAS - BOS
2 stops25h 45mMultiple Airlines
Deal found 9/14$484
This Expedia deal was found by Cheapflights users on 9/15. 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 10/163:00 pmBOS - EAS
2 stops16h 00mIberia
Mon 10/209:30 pmEAS - BOS
2 stops25h 45mIberia
Deal found 9/15$512
This Expedia deal was found by Cheapflights users on 9/14. 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.
Sat 10/44:34 pmBOS - EAS
2 stops34h 06mIberia
Sun 11/29:30 pmEAS - BOS
2 stops53h 25mIberia
Deal found 9/14$518
This Iberia deal was found by Cheapflights users on 9/14. 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 11/274:45 pmBOS - EAS
1 stop14h 15mIberia
Sun 12/79:30 pmEAS - BOS
1 stop23h 45mIberia
Deal found 9/14$528
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/308:29 amBOS - EAS
2 stops19h 11mAmerican Airlines
Thu 11/61:40 pmEAS - BOS
2 stops15h 07mAmerican Airlines
Deal found 9/15$540
This Iberia deal was found by Cheapflights users on 9/15. 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 11/274:45 pmBOS - EAS
1 stop9h 55mIberia
Tue 12/29:20 amEAS - BOS
2 stops17h 35mIberia
Deal found 9/15$545
This American Airlines deal was found by Cheapflights users on 9/15. 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 11/2711:55 amBOS - EAS
2 stops19h 05mAmerican Airlines
Sun 12/79:20 amEAS - BOS
1 stop16h 30mAmerican Airlines
Deal found 9/15$552

Cheapflights Fare Finder

 
Customize your flight search to find flights from Massachusetts to San Sebastian 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 September 15, 2025.
Use the filters below to find and compare flights from Massachusetts to San Sebastian that are best for you.

Fly from

Massachusetts

Fly to

San Sebastian

Route

Depart

Return

Price

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 10/13

4:30 pm-8:40 am

1 stop10h 10m

San Sebastián

Mon 10/20

9:30 pm-5:15 pm

2 stops25h 45m

$428

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 10/20

11:58 am-8:40 am

2 stops14h 42m

San Sebastián

Wed 11/5

9:30 pm-3:15 pm

1 stop23h 45m

$436

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 10/13

10:00 pm-8:40 am

2 stops28h 40m

San Sebastián

Mon 10/20

9:30 pm-5:15 pm

2 stops25h 45m

$484

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 11/27

4:45 pm-1:00 pm

1 stop14h 15m

San Sebastián

Tue 12/2

9:20 am-8:55 pm

2 stops17h 35m

$505

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 11/27

4:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Sun 12/7

9:20 am-7:50 pm

1 stop16h 30m

$512

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sat 10/4

4:34 pm-8:40 am

2 stops34h 06m

San Sebastián

Sun 11/2

9:30 pm-8:55 pm

2 stops53h 25m

$518

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 10/14

11:00 pm-8:25 am

1 stop27h 25m

$242

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Wed 10/15

11:00 pm-5:20 pm

1 stop12h 20m

$301

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Fri 10/3

2:53 pm-8:50 am

3 stops35h 57m

$320

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 10/14

11:00 pm-8:40 am

2 stops27h 40m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 12 results
1
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Best time to book a flight from Massachusetts to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Massachusetts 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 Massachusetts to San Sebastian
No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • What airport do you fly into for flights to San Sebastian from Massachusetts?

    If you book a flight to San Sebastian from Massachusetts, you will be flying to San Sebastián, which is the city’s only airport. San Sebastián (EAS) is located 9.7 mi from the center of San Sebastian.

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

    There are many flights that can get you from Massachusetts to San Sebastian in 10h 10m. Fly via Iberia or American Airlines to get the fastest option. Airlines will cover a distance of 3398 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Massachusetts to San Sebastian 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

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Alternative routes for Massachusetts to San Sebastian

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Massachusetts to San Sebastian

Discover the top 2 airlines that operate flights from Massachusetts to San Sebastian. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$450Average$864FlexibilityNo cancel feeOn-time71%
IberiaCheapest$522Average$858FlexibilityNo cancel feeOn-time77%

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