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San Sebastian

$611+ Cheap flights from Boston (BOS) to San Sebastian (EAS)

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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — EAS
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Boston to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Sebastian (EAS). 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 junio 12, 2025.

Round-trip from

$611
(Kiwi.com)

Popular in

February

Cheapest in

May

Average price

$1,170
From Boston Logan Intl to San Sebastián
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($206 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($85 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Boston to San Sebastian

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

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/228:50 pmBOS - EAS
2 stops29h 40mMultiple Airlines
mié. 8/209:10 amEAS - BOS
1 stop18h 05mMultiple Airlines
Deal found 6/12$611
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/2611:00 pmBOS - EAS
1 stop27h 10mVueling
mié. 8/209:10 amEAS - BOS
1 stop18h 05mVueling
Deal found 6/12$670
This Iberia deal was found by Cheapflights users on 6/9. 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.
lun. 7/281:26 pmBOS - EAS
2 stops13h 14mIberia
mar. 8/59:30 pmEAS - BOS
1 stop28h 20mIberia
Deal found 6/9$676
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/231:26 pmBOS - EAS
2 stops13h 14mAmerican Airlines
mar. 8/191:40 pmEAS - BOS
2 stops15h 19mAmerican Airlines
Deal found 6/12$840

Cheapflights Fare Finder

Customize your flight search to find flights from Boston 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 junio 12, 2025.
Use the filters below to find and compare flights from Boston to San Sebastian that are best for you.

Fly from

Boston

Fly to

San Sebastian

Route

Depart

Return

Price

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

mar. 7/22

8:50 pm-8:30 am

2 stops29h 40m

San Sebastián

mié. 8/20

9:10 am-9:15 pm

1 stop18h 05m

$611

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

sáb. 7/26

11:00 pm-8:10 am

1 stop27h 10m

San Sebastián

mié. 8/20

9:10 am-9:15 pm

1 stop18h 05m

$670

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

lun. 7/28

1:26 pm-8:40 am

2 stops13h 14m

San Sebastián

mar. 8/5

9:30 pm-7:50 pm

1 stop28h 20m

$676

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

mié. 7/23

1:26 pm-8:40 am

2 stops13h 14m

San Sebastián

mar. 8/19

1:40 pm-10:59 pm

2 stops15h 19m

$840

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

dom. 6/29

9:20 pm-8:40 am

1 stop29h 20m

$668

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Best time to book a flight from Boston to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Boston 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.

Reviews of airlines servicing San Sebastian

Get insights into the airlines that provide service to San Sebastian. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Sebastian. Reviews last updated junio 12, 2025.
Read reviews from past customers who have flown American Airlines, Vueling and Iberia from Boston to San Sebastian. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Food

6.5

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Food

6.5

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.
Vueling
7.1
Good
1,169 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Food

6.5

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.
Iberia
7.0
Good
2,776 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Food

6.5

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.

Related info for your journey

Find useful and relevant information for your journey from Boston 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 are the cheapest airlines flying from Boston to San Sebastian round-trip?

    Currently priced at $670, Vueling will fly you from Boston to San Sebastian and back. In addition to Vueling, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Iberia and American Airlines - these airlines can fly you to your destination from $676 and $840, respectively. Vueling is priced at 30% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston 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 Boston to San Sebastian

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

Top 2 airlines flying from Boston to San Sebastian

Discover the top 2 airlines that operate flights from Boston 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$607Average$869FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$613Average$864FlexibilityNo cancel feeOn-time71%

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