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$553+ 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 7/24. Fares are subject to change and may not be available on all flights or dates of travel.
EAS — BOS
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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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 March 23, 2026.

This American Airlines deal was found by Cheapflights users on 3/22. 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.
Wed 5/61:40 pm
EAS
-
BOS
2 stops27h 24m
American Airlines
Sun 5/103:17 pm
BOS
-
EAS
2 stops35h 23m
American Airlines
Deal found 3/22$785
This lol.travel deal was found by Cheapflights users on 3/20. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/39:30 pm
EAS
-
BOS
1 stop24h 40m
Iberia
Sun 5/103:17 pm
BOS
-
EAS
2 stops35h 23m
Iberia
Deal found 3/20$803
This American Airlines deal was found by Cheapflights users on 3/18. 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 4/31:40 pm
EAS
-
BOS
1 stop12h 10m
American Airlines
Tue 4/711:51 am
BOS
-
EAS
2 stops14h 49m
American Airlines
Deal found 3/18$812
This Iberia deal was found by Cheapflights users on 3/20. 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.
Wed 5/68:55 am
EAS
-
BOS
1 stop18h 10m
Iberia
Sun 5/105:40 pm
BOS
-
EAS
1 stop13h 20m
Iberia
Deal found 3/20$834
This LEVEL deal was found by Cheapflights users on 3/18. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/38:55 am
EAS
-
BOS
1 stop18h 10m
LEVEL
Tue 4/710:50 pm
BOS
-
EAS
1 stop12h 30m
LEVEL
Deal found 3/18$890
This Iberia deal was found by Cheapflights users on 3/18. 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.
Fri 4/31:40 pm
EAS
-
BOS
1 stop12h 10m
Iberia
Tue 4/710:50 pm
BOS
-
EAS
1 stop12h 30m
Iberia
Deal found 3/18$906
This Mytrip deal was found by Cheapflights users on 3/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/38:55 am
EAS
-
BOS
2 stops17h 25m
Multiple Airlines
Tue 4/79:15 pm
BOS
-
EAS
2 stops14h 05m
Multiple Airlines
Deal found 3/18$921

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 March 23, 2026.

Round-trip from

$785
(American Airlines)

One-way from

$553
(Kiwi.com)
From San Sebastián to Boston Logan Intl
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One-way flight from San Sebastián to Boston Logan Intl
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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 March 23, 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

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 5/6

1:40 pm-11:04 am

2 stops27h 24m

Boston Logan Intl

Sun 5/10

3:17 pm-8:40 am

2 stops35h 23m

$785

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Fri 4/3

1:40 pm-7:50 pm

1 stop12h 10m

Boston Logan Intl

Tue 4/7

11:51 am-8:40 am

2 stops14h 49m

$812

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Sun 5/3

9:20 am-6:48 pm

2 stops15h 28m

Boston Logan Intl

Sun 5/10

6:00 am-8:40 am

2 stops20h 40m

$815

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 5/6

8:55 am-9:05 pm

1 stop18h 10m

Boston Logan Intl

Sun 5/10

5:40 pm-1:00 pm

1 stop13h 20m

$834

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Fri 4/3

8:55 am-9:05 pm

1 stop18h 10m

Boston Logan Intl

Tue 4/7

10:50 pm-5:20 pm

1 stop12h 30m

$890
Quickest round-trip

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Fri 4/3

1:40 pm-7:50 pm

1 stop12h 10m

Boston Logan Intl

Tue 4/7

10:50 pm-5:20 pm

1 stop12h 30m

$906

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 4/22

9:20 am-7:50 pm

1 stop16h 30m

Boston Logan Intl

Sun 4/26

11:34 am-8:40 am

2 stops15h 06m

$960
Cheapest one-way

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Fri 7/24

9:30 pm-8:20 pm

3 stops28h 50m

$553

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Fri 7/24

8:55 am-9:15 pm

1 stop18h 20m

$696

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Sun 5/31

9:30 pm-6:48 pm

2 stops27h 18m

$812

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/22

Showing 1-10 of 17 resultsSorted by cheapest first
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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.

Cheapflights Insights

Everything you need to know about your flight from San Sebastian to Boston

What is the cheapest month to book a flight from San Sebastian to Boston?

Currently, September is the cheapest month in which you can book a flight from San Sebastian to Boston (average of $227). Flying from San Sebastian to Boston in July is currently the most expensive (average of $699). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 American Airlines and Iberia fly from San Sebastian to Boston in about 24h 40m. The time it takes to get you to your destination can typically vary by up to 10h 28m. The distance from San Sebastian to Boston is about 3398 mi. This flight may include one or multiple stops.

  • 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.

  • What is the cheapest month to book a flight from San Sebastian to Boston?

    Currently, September is the cheapest month in which you can book a flight from San Sebastian to Boston (average of $227). Flying from San Sebastian to Boston in July is currently the most expensive (average of $699). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Medford
Cambridge
Concord
Hampton Beach
Watertown
Seekonk
Brockton
Seabrook
Cranston
Chelsea
Smithfield
Lincoln
Warwick
Peabody
Waltham
York Beach
Londonderry
Swansea
Old Orchard Beach
Quincy

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Alternative routes for San Sebastian to Boston

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