$686+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
EAS — BOS
Nov 13 — Nov 201
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
One-way
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 October 14, 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 October 14, 2026.
This Iberia deal was found by Cheapflights users on 10/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/251:40 pm -
1 stop10h 45m
Sun 11/298:00 pm -
1 stop11h 00m
Deal found 10/12![Iberia logo]()
$686
This Travelocity deal was found by Cheapflights users on 10/11. 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.
Fri 12/49:20 am -
1 stop15h 05m
Tue 12/87:30 am -
2 stops24h 05m
Deal found 10/11![Iberia logo]()
$687
This American Airlines deal was found by Cheapflights users on 10/12. 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.
Wed 11/251:40 pm -
1 stop10h 45m
Sun 11/292:50 pm -
2 stops16h 10m
Deal found 10/12![American Airlines logo]()
$691
This American Airlines deal was found by Cheapflights users on 10/11. 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 12/49:20 am -
2 stops19h 39m
Tue 12/81:13 pm -
2 stops17h 47m
Deal found 10/11![American Airlines logo]()
$701
This Iberia deal was found by Cheapflights users on 10/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:40 pm -
1 stop10h 20m
Sun 11/158:00 pm -
1 stop11h 00m
Deal found 10/12![Iberia logo]()
$719
This American Airlines deal was found by Cheapflights users on 10/12. 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.
Wed 11/119:30 pm -
1 stop26h 55m
Sun 11/155:30 pm -
2 stops13h 30m
Deal found 10/12![American Airlines logo]()
$864
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 October 14, 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 October 14, 2026.
This American Airlines deal was found by Cheapflights users on 10/11. 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 12/49:20 am -
1 stop15h 05m
Tue 12/89:30 pm -
1 stop17h 20m
Deal found 10/11![Multiple Airlines logo]()
$686
This Travelocity deal was found by Cheapflights users on 10/11. 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.
Fri 12/49:20 am -
1 stop15h 05m
Tue 12/87:30 am -
2 stops24h 05m
Deal found 10/11![Iberia logo]()
$687
This American Airlines deal was found by Cheapflights users on 10/12. 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.
Wed 11/251:40 pm -
1 stop10h 45m
Sun 11/292:50 pm -
2 stops16h 10m
Deal found 10/12![American Airlines logo]()
$691
This American Airlines deal was found by Cheapflights users on 10/11. 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 12/49:20 am -
2 stops19h 39m
Tue 12/81:13 pm -
2 stops17h 47m
Deal found 10/11![American Airlines logo]()
$701
This Iberia deal was found by Cheapflights users on 10/13. 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 11/111:40 pm -
1 stop10h 20m
Sun 11/158:00 pm -
1 stop11h 00m
Deal found 10/13![Iberia logo]()
$719
This American Airlines deal was found by Cheapflights users on 10/13. 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 11/119:30 pm -
1 stop26h 55m
Sun 11/155:30 pm -
2 stops13h 30m
Deal found 10/13![American Airlines logo]()
$864
Last-minute flights from San Sebastian to BostonDiscover last-minute flight deals from San Sebastian to Boston. Data last updated October 14, 2026 and is based on user searches.
Discover last-minute flight deals from San Sebastian to Boston. Data last updated October 14, 2026 and is based on user searches.
This Iberia deal was found by Cheapflights users on 10/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:40 pm -
1 stop10h 20m
Sun 11/158:00 pm -
1 stop11h 00m
Deal found 10/12![Iberia logo]()
$719
This American Airlines deal was found by Cheapflights users on 10/12. 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.
Wed 11/119:30 pm -
1 stop26h 55m
Sun 11/155:30 pm -
2 stops13h 30m
Deal found 10/12![American Airlines logo]()
$864
This Iberia deal was found by Cheapflights users on 10/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/251:40 pm -
1 stop10h 45m
Sun 11/298:00 pm -
1 stop11h 00m
Deal found 10/12![Iberia logo]()
$686
This American Airlines deal was found by Cheapflights users on 10/12. 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.
Wed 11/251:40 pm -
1 stop10h 45m
Sun 11/292:50 pm -
2 stops16h 10m
Deal found 10/12![American Airlines logo]()
$691
One-way flights from San Sebastian to BostonSearch for one-way flight options from San Sebastian to Boston. Find affordable one-way fares based on user searches. Data last updated October 14, 2026.
Search for one-way flight options from San Sebastian to Boston. Find affordable one-way fares based on user searches. Data last updated October 14, 2026.
This Finnair deal was found by Cheapflights users on 10/14. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/279:30 pm -
2 stops30h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Multiple Airlines logo]()
$974
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 October 14, 2026.
Round-trip from | $686 (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 October 14, 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
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Fri 12/4
9:20 am-6:25 pm
1 stop15h 05m
Boston Logan Intl
Tue 12/8
9:30 pm-8:50 pm
1 stop17h 20m
$686
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Fri 12/4
9:20 am-6:25 pm
1 stop15h 05m
Boston Logan Intl
Tue 12/8
7:30 am-1:35 pm
2 stops24h 05m
$687
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Wed 11/25
1:40 pm-6:25 pm
1 stop10h 45m
Boston Logan Intl
Sun 11/29
2:50 pm-1:00 pm
2 stops16h 10m
$691
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Fri 12/4
9:20 am-10:59 pm
2 stops19h 39m
Boston Logan Intl
Tue 12/8
1:13 pm-1:00 pm
2 stops17h 47m
$701
Quickest round-trip
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Wed 11/11
1:40 pm-6:00 pm
1 stop10h 20m
Boston Logan Intl
Sun 11/15
8:00 pm-1:00 pm
1 stop11h 00m
$719
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Wed 11/11
9:30 pm-6:25 pm
1 stop26h 55m
Boston Logan Intl
Sun 11/15
5:30 pm-1:00 pm
2 stops13h 30m
$864
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Tue 10/27
9:30 pm-10:54 pm
2 stops30h 24m
Boston Logan Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$974
Sorted by cheapest first
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
Brockton
Dedham
Cranston
Warwick
Pawtucket
Peabody
Londonderry
York Beach
Revere
Fitchburg
North Falmouth
Chelsea
Swansea
Braintree
Auburn
Sandwich
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