Cheap flights from Boston to San Sebastian from $589
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to San Sebastian departing on 11/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
BostonSan Sebastian
BOS Boston Logan Intl - EAS San Sebastián
BOSEAS
Boston Logan Intl
Sun 11/8
7:15 pm-1:00 pm
1 stop11h 45m
San Sebastián
Tue 11/24
1:40 pm-6:25 pm
1 stop10h 45m
BostonSan Sebastian
BOS Boston Logan Intl - EAS San Sebastián
BOSEAS
Boston Logan Intl
Sat 11/14
8:00 pm-1:00 pm
1 stop11h 00m
San Sebastián
Sat 11/21
1:40 pm-6:25 pm
1 stop10h 45m
BostonSan Sebastian
BOS Boston Logan Intl - EAS San Sebastián
BOSEAS
Boston Logan Intl
Sat 11/14
8:00 pm-4:55 pm
1 stop14h 55m
San Sebastián
Sat 11/21
9:30 pm-7:55 pm
2 stops28h 25m
BostonSan Sebastian
BOS Boston Logan Intl - EAS San Sebastián
BOSEAS
Boston Logan Intl
Sun 11/8
5:30 pm-1:00 pm
2 stops13h 30m
San Sebastián
Tue 11/24
9:20 am-6:25 pm
1 stop15h 05m
BostonSan Sebastian
BOS Boston Logan Intl - EAS San Sebastián
BOSEAS
Boston Logan Intl
Tue 11/3
7:15 pm-1:00 pm
1 stop11h 45m
San Sebastián
Tue 11/10
1:40 pm-6:00 pm
1 stop10h 20m
BostonSan Sebastian
BOS Boston Logan Intl - EAS San Sebastián
BOSEAS
Boston Logan Intl
Tue 11/3
12:40 pm-8:40 am
2 stops14h 00m
San Sebastián
Tue 11/10
1:40 pm-6:00 pm
1 stop10h 20m
BostonSan Sebastian
BOS Boston Logan Intl - EAS San Sebastián
BOSEAS
Boston Logan Intl
Sun 11/8
5:30 pm-1:00 pm
2 stops13h 30m
San Sebastián
Tue 11/24
9:20 am-11:47 pm
2 stops20h 27m
BostonSan Sebastian
BOS Boston Logan Intl - EAS San Sebastián
BOSEAS
Boston Logan Intl
Tue 11/3
12:40 pm-8:40 am
2 stops14h 00m
San Sebastián
Tue 11/10
1:40 pm-11:44 pm
2 stops16h 04m
BostonSan Sebastian
BOS Boston Logan Intl - EAS San Sebastián
BOSEAS
Boston Logan Intl
Tue 11/3
12:40 pm-8:40 am
2 stops14h 00m
San Sebastián
Tue 11/10
1:40 pm-11:44 pm
2 stops16h 04m
BostonSan Sebastian
BOS Boston Logan Intl - EAS San Sebastián
BOSEAS
Boston Logan Intl
Sat 11/14
5:15 pm-5:35 pm
2 stops18h 20m
San Sebastián
Sat 11/21
2:10 pm-2:00 pm
2 stops29h 50m
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How to get the cheapest flight ticket from Boston to San Sebastian
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
When to book flights from Boston to San Sebastian
Cheap Boston to San Sebastian (BOS to EAS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Boston to San Sebastian
Frequently asked questions about flying from Boston to San Sebastian
How far is Boston Logan Intl to San Sebastián by plane?
The straight-line distance from Boston Logan Intl to San Sebastián is 3393.2 mi. Flights usually cover this in 14h 11m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Boston Logan Intl Airport to San Sebastián Airport?
Prices for flights from Boston Logan Intl Airport to San Sebastián Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Boston Logan Intl Airport to San Sebastián Airport?
As of October 2026, there is 1 operator available to choose from for flights from Boston Logan Intl Airport to San Sebastián Airport.
How old do you have to be to fly from Boston Logan Intl Airport to San Sebastián Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to San Sebastián Airport.
What documentation or ID do you need to fly to San Sebastián Airport?
The necessary travel and health documents for your San Sebastián Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Boston to San Sebastian?
momondo data reveals that the most frequently booked airline on the route from Boston to San Sebastian is Iberia, representing 100% of all bookings.
Best airlines flying from Boston to San Sebastian
Compare and see reviews for airlines that fly from Boston to San Sebastian with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $487 | Free Cancellation | Rating 7.0 3,253 reviews |
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Why should I use momondo to find a flight deal from Boston to San Sebastian?
Finding the right flight to San Sebastian from Boston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Sebastian quick and easy, saving you time and money.
Can I find flights from Boston to San Sebastian with flexible booking policies on momondo?
All flight searches from Boston to San Sebastian on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Boston to San Sebastian?
Once all potential Boston to San Sebastian flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Boston to San Sebastian right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Boston to San Sebastian flights. All you need is a valid email address and we will do the rest; it is that quick and easy.