$700+ Cheap flights from San Sebastian (EAS) to Boston (BOS)
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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
EAS — BOS
Dec 9 — Dec 161
Round-trip
1 adult, Economy
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Find cheap flights from San Sebastian to Boston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Sebastian to Boston
Cheapest
Best
Last-minute
Cheapest flights from San Sebastian to BostonExplore 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 November 9, 2026.
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 November 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Sat 12/199:10 pm -
2 stops29h 20m
Sat 1/28:00 pm -
1 stop18h 50m
Deal found 11/8![Multiple Airlines logo]()
$950
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Fri 12/189:30 pm -
2 stops53h 00m
Sat 1/28:00 pm -
1 stop18h 50m
Deal found 11/8![Multiple Airlines logo]()
$1,036
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Fri 12/189:30 pm -
2 stops52h 25m
Fri 1/18:00 pm -
1 stop18h 50m
Deal found 11/8![Multiple Airlines logo]()
$1,147
This lastminute.com deal was found by Cheapflights users on 11/8. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/249:30 pm -
1 stop26h 55m
Sat 11/284:56 pm -
2 stops38h 04m
Deal found 11/8![Multiple Airlines logo]()
$1,179
Best flights from San Sebastian to BostonDiscover carefully curated flight deals from San Sebastian to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.
Discover carefully curated flight deals from San Sebastian to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.
This Iberia deal was found by Cheapflights users on 11/4. 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 2/251:40 pm -
1 stop12h 20m
Mon 3/18:00 pm -
1 stop11h 00m
Deal found 11/4![Iberia logo]()
$700
This British Airways deal was found by Cheapflights users on 11/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/251:40 pm -
1 stop10h 45m
Mon 3/18:00 pm -
1 stop18h 50m
Deal found 11/6![British Airways logo]()
$830
This Mytrip deal was found by Cheapflights users on 11/8. 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.
Sat 12/199:10 pm -
3 stops29h 20m
Sat 1/210:25 am -
2 stops25h 10m
Deal found 11/8![Multiple Airlines logo]()
$964
Last-minute flights from San Sebastian to BostonDiscover last-minute flight deals from San Sebastian to Boston. Data last updated November 9, 2026 and is based on user searches.
Discover last-minute flight deals from San Sebastian to Boston. Data last updated November 9, 2026 and is based on user searches.
This lastminute.com deal was found by Cheapflights users on 11/8. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/249:30 pm -
1 stop26h 55m
Sat 11/284:56 pm -
2 stops38h 04m
Deal found 11/8![Multiple Airlines logo]()
$1,179
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Fri 12/189:30 pm -
2 stops53h 00m
Sat 1/28:00 pm -
1 stop18h 50m
Deal found 11/8![Multiple Airlines logo]()
$1,036
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Fri 12/189:30 pm -
2 stops52h 25m
Fri 1/18:00 pm -
1 stop18h 50m
Deal found 11/8![Multiple Airlines logo]()
$1,147
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Sat 12/199:10 pm -
2 stops29h 20m
Sat 1/28:00 pm -
1 stop18h 50m
Deal found 11/8![Multiple Airlines logo]()
$950
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 November 9, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $700 (Iberia) |
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 7,457,451 searches. Data last updated November 9, 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
Cheapest round-trip
Quickest round-trip
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Thu 2/25
1:40 pm-8:00 pm
1 stop12h 20m
Boston Logan Intl
Mon 3/1
8:00 pm-1:00 pm
1 stop11h 00m
$700
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Thu 2/25
1:40 pm-6:25 pm
1 stop10h 45m
Boston Logan Intl
Mon 3/1
8:00 pm-8:50 pm
1 stop18h 50m
$830
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Sat 12/19
9:10 pm-8:30 pm
3 stops29h 20m
Boston Logan Intl
Sat 1/2
10:25 am-5:35 pm
2 stops25h 10m
$964
Sorted by cheapest first
- Most accurate provider: When it comes to deals on San Sebastian-Boston flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on San Sebastian-Boston flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from San Sebastian-Boston flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Sebastian-Boston flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Sebastian-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
EAS-BOS
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.
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.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Randolph
Concord
Cambridge
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Dedham
Cranston
Warwick
Pawtucket
Peabody
Revere
Fitchburg
Londonderry
York Beach
North Falmouth
Chelsea
Swansea
Braintree
Auburn
Sandwich
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