$452+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
EAS — BOS
Oct 24 — Oct 311
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 September 24, 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 September 24, 2026.
This American Airlines deal was found by Cheapflights users on 9/21. 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.
Thu 11/59:20 am -
1 stop14h 20m
Thu 11/125:30 pm -
2 stops13h 30m
Deal found 9/21![American Airlines logo]()
$575
This Priceline deal was found by Cheapflights users on 9/21. 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.
Thu 11/59:20 am -
1 stop14h 20m
Thu 11/128:00 pm -
1 stop11h 00m
Deal found 9/21![Iberia logo]()
$602
This Iberia deal was found by Cheapflights users on 9/22. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:40 pm -
2 stops33h 17m
Sun 11/158:00 pm -
1 stop11h 00m
Deal found 9/22![Iberia logo]()
$659
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Wed 10/79:30 pm -
2 stops29h 35m
Sun 10/1111:35 pm -
1 stop26h 45m
Deal found 9/21![Multiple Airlines logo]()
$684
This Iberia deal was found by Cheapflights users on 9/21. 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 10/79:20 am -
1 stop16h 10m
Sun 10/115:40 pm -
1 stop21h 10m
Deal found 9/21![Iberia logo]()
$704
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 September 24, 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 September 24, 2026.
This American Airlines deal was found by Cheapflights users on 9/21. 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.
Thu 11/59:20 am -
1 stop14h 20m
Thu 11/128:00 pm -
1 stop11h 00m
Deal found 9/21![Multiple Airlines logo]()
$575
This American Airlines deal was found by Cheapflights users on 9/21. 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.
Thu 11/59:20 am -
1 stop14h 20m
Thu 11/125:30 pm -
2 stops13h 30m
Deal found 9/21![American Airlines logo]()
$575
This Priceline deal was found by Cheapflights users on 9/21. 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.
Thu 11/59:20 am -
1 stop14h 20m
Thu 11/1211:46 am -
2 stops14h 54m
Deal found 9/21![Iberia logo]()
$607
This Iberia deal was found by Cheapflights users on 9/22. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:40 pm -
2 stops33h 17m
Sun 11/158:00 pm -
1 stop11h 00m
Deal found 9/22![Iberia logo]()
$659
This American Airlines deal was found by Cheapflights users on 9/19. 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 11/111:40 pm -
2 stops16h 04m
Sun 11/156:51 pm -
2 stops31h 49m
Deal found 9/19![American Airlines logo]()
$763
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Sun 12/206:10 pm -
2 stops25h 55m
Sun 12/279:30 pm -
1 stop29h 10m
Deal found 9/21![Multiple Airlines logo]()
$961
Last-minute flights from San Sebastian to BostonDiscover last-minute flight deals from San Sebastian to Boston. Data last updated September 24, 2026 and is based on user searches.
Discover last-minute flight deals from San Sebastian to Boston. Data last updated September 24, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Wed 10/79:30 pm -
2 stops29h 35m
Sun 10/1111:35 pm -
1 stop26h 45m
Deal found 9/21![Multiple Airlines logo]()
$684
This Iberia deal was found by Cheapflights users on 9/21. 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 10/79:20 am -
1 stop16h 10m
Sun 10/115:40 pm -
1 stop21h 10m
Deal found 9/21![Iberia logo]()
$704
This American Airlines deal was found by Cheapflights users on 9/21. 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 10/79:20 am -
2 stops17h 25m
Sun 10/114:59 pm -
2 stops14h 01m
Deal found 9/21![American Airlines logo]()
$1,147
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 September 24, 2026.
Search for one-way flight options from San Sebastian to Boston. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:30 pm -
2 stops28h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$452
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/281:40 pm -
3 stops36h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$502
This Orbitz deal was found by Cheapflights users on 9/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:30 pm -
1 stop26h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Iberia logo]()
$527
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 September 24, 2026.
Round-trip from | $575 (American Airlines) |
|---|---|
One-way from | $452 (Kiwi.com) |
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 September 24, 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
Sun 11/15
9:30 pm-7:55 pm
2 stops28h 25m
Boston Logan Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$452
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Sat 11/28
1:40 pm-8:00 pm
3 stops36h 20m
Boston Logan Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$502
Quickest round-trip
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Thu 11/5
9:20 am-5:40 pm
1 stop14h 20m
Boston Logan Intl
Thu 11/12
8:00 pm-1:00 pm
1 stop11h 00m
$575
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Thu 11/5
9:20 am-5:40 pm
1 stop14h 20m
Boston Logan Intl
Thu 11/12
5:30 pm-1:00 pm
2 stops13h 30m
$575
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Thu 11/5
9:20 am-5:40 pm
1 stop14h 20m
Boston Logan Intl
Thu 11/12
11:46 am-8:40 am
2 stops14h 54m
$607
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Wed 11/11
1:40 pm-4:57 pm
2 stops33h 17m
Boston Logan Intl
Sun 11/15
8:00 pm-1:00 pm
1 stop11h 00m
$659
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Wed 11/11
1:40 pm-11:44 pm
2 stops16h 04m
Boston Logan Intl
Sun 11/15
6:51 pm-8:40 am
2 stops31h 49m
$763
San SebastianBoston
EAS San Sebastián - BOS Boston Logan Intl
EASBOS
San Sebastián
Sun 12/20
6:10 pm-2:05 pm
2 stops25h 55m
Boston Logan Intl
Sun 12/27
9:30 pm-8:40 am
1 stop29h 10m
$961
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
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Braintree
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