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San Sebastian

$314+ Cheap flights from Boston (BOS) 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — EAS
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
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 June 16, 2025.

Round-trip from

$564
(Kiwi.com)

One-way from

$314
(Kiwi.com)

Popular in

February

Cheapest in

May

Average price

$1,226
From Boston Logan Intl to San Sebastián
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One-way flight from Boston Logan Intl to San Sebastián
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Highest demand for flights based on searches. 17% potential increase in price ($201 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($84 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 June 16, 2025.

This Booking.com deal was found by Cheapflights users on 6/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1011:00 pmBOS - EAS
1 stop27h 50mVueling
Tue 10/141:30 pmEAS - BOS
1 stop13h 45mVueling
Deal found 6/14$544
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/911:00 pmBOS - EAS
1 stop27h 30mMultiple Airlines
Wed 10/19:10 amEAS - BOS
1 stop18h 05mMultiple Airlines
Deal found 6/15$564
This Iberia deal was found by Cheapflights users on 6/15. 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.
Sun 8/31:26 pmBOS - EAS
2 stops13h 14mIberia
Tue 8/199:30 pmEAS - BOS
1 stop28h 20mIberia
Deal found 6/15$607
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/101:43 pmBOS - EAS
2 stops12h 57mAmerican Airlines
Tue 10/149:20 amEAS - BOS
1 stop16h 30mAmerican Airlines
Deal found 6/14$621
This Priceline deal was found by Cheapflights users on 6/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/298:10 pmBOS - EAS
1 stop14h 30mBritish Airways
Fri 8/112:35 pmEAS - BOS
1 stop13h 35mBritish Airways
Deal found 6/16$1,371

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 June 16, 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

Fri 10/10

11:00 pm-8:50 am

1 stop27h 50m

San Sebastián

Tue 10/14

1:30 pm-9:15 pm

1 stop13h 45m

$544

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 9/9

11:00 pm-8:30 am

1 stop27h 30m

San Sebastián

Wed 10/1

9:10 am-9:15 pm

1 stop18h 05m

$564

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 8/3

1:26 pm-8:40 am

2 stops13h 14m

San Sebastián

Tue 8/19

9:30 pm-7:50 pm

1 stop28h 20m

$607

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Fri 10/10

1:43 pm-8:40 am

2 stops12h 57m

San Sebastián

Tue 10/14

9:20 am-7:50 pm

1 stop16h 30m

$621

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 6/29

4:02 pm-4:40 pm

2 stops18h 38m

San Sebastián

Fri 8/1

12:35 pm-11:34 pm

2 stops16h 59m

$1,387

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 8/7

10:25 pm-8:40 am

2 stops28h 15m

$314

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Fri 8/8

11:00 pm-8:50 am

1 stop27h 50m

$409

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Fri 8/8

11:00 pm-8:50 am

1 stop27h 50m

$445

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 8/7

1:40 am-1:00 pm

2 stops53h 20m

$8,200

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

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 June 16, 2025.
Read reviews from past customers who have flown Cathay Pacific, American Airlines and Vueling 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.
Cathay Pacific
7.6
Good
892 reviews

Entertainment

7.8

Comfort

7.6

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.0

Reviews

1 / 20
8.0
Excellent

KS,Jun 2025

TFU - HKG

I like the crews and flights, English over the speakers were difficult to understand. The beef dinner was off flavor.
Cathay Pacific
7.6
Good
892 reviews
Cathay Pacific
7.6
Good
892 reviews

Entertainment

7.8

Comfort

7.6

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.0

Reviews

1 / 20
8.0
Excellent

KS,Jun 2025

TFU - HKG

I like the crews and flights, English over the speakers were difficult to understand. The beef dinner was off flavor.
American Airlines
7.2
Good
10,000 reviews
Cathay Pacific
7.6
Good
892 reviews

Entertainment

7.8

Comfort

7.6

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.0

Reviews

1 / 20
8.0
Excellent

KS,Jun 2025

TFU - HKG

I like the crews and flights, English over the speakers were difficult to understand. The beef dinner was off flavor.
Vueling
7.1
Good
1,169 reviews
Cathay Pacific
7.6
Good
892 reviews

Entertainment

7.8

Comfort

7.6

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.0

Reviews

1 / 20
8.0
Excellent

KS,Jun 2025

TFU - HKG

I like the crews and flights, English over the speakers were difficult to understand. The beef dinner was off flavor.
Iberia
7.0
Good
2,778 reviews
Cathay Pacific
7.6
Good
892 reviews

Entertainment

7.8

Comfort

7.6

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.0

Reviews

1 / 20
8.0
Excellent

KS,Jun 2025

TFU - HKG

I like the crews and flights, English over the speakers were difficult to understand. The beef dinner was off flavor.
British Airways
6.6
Okay
7,019 reviews
Cathay Pacific
7.6
Good
892 reviews

Entertainment

7.8

Comfort

7.6

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.0

Reviews

1 / 20
8.0
Excellent

KS,Jun 2025

TFU - HKG

I like the crews and flights, English over the speakers were difficult to understand. The beef dinner was off flavor.

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 $607, Iberia will fly you from Boston to San Sebastian and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Vueling and American Airlines - these airlines can fly you to your destination from $640 and $662, respectively. Iberia is priced at 37% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Boston to San Sebastian one-way?

    $409 is the cheapest one-way deal found within the past few days, from Vueling. You may also be able to find cheap deals on Iberia and Cathay Pacific, with prices starting from $427 and $8,200, respectively.

  • 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
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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 June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$607Average$869FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$613Average$864FlexibilityNo cancel feeOn-time71%

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