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Cheap flights from Massachusetts to San Sebastian from $498

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Massachusetts to San Sebastian departing on 1/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Massachusetts to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:45 pm - 8:40 am
BOS
-
EAS
9h 55m1 stop
Multiple Airlines Logo
1:40 pm - 7:50 pm
EAS
-
BOS
12h 10m1 stop
$498Multiple Airlines
Thu, Jan 8 - Wed, Jan 21
Multiple Airlines Logo
4:45 pm - 8:40 am
BOS
-
EAS
9h 55m1 stop
Multiple Airlines Logo
1:40 pm - 10:56 pm
EAS
-
BOS
15h 16m2 stops
$508Multiple Airlines
Thu, Jan 8 - Wed, Jan 21
Multiple Airlines Logo
4:45 pm - 8:40 am
BOS
-
EAS
9h 55m1 stop
Multiple Airlines Logo
9:30 pm - 3:15 pm
EAS
-
BOS
23h 45m1 stop
$523Multiple Airlines
Thu, Jan 8 - Thu, Jan 22
Multiple Airlines Logo
9:20 pm - 8:50 pm
BOS
-
EAS
17h 30m1 stop
Multiple Airlines Logo
9:30 pm - 3:15 pm
EAS
-
BOS
23h 45m1 stop
$538Multiple Airlines
Fri, Jan 9 - Thu, Jan 22
Iberia Logo
5:45 pm - 8:40 am
BOS
-
EAS
9h 55m1 stop
Iberia Logo
1:40 pm - 3:20 pm
EAS
-
BOS
30h 40m2 stops
$545Iberia
Sun, Mar 15 - Sat, Mar 21
American Airlines Logo
9:45 am - 8:40 am
BOS
-
EAS
16h 55m2 stops
American Airlines Logo
1:40 pm - 10:56 pm
EAS
-
BOS
15h 16m2 stops
$549American Airlines
Wed, Jan 14 - Sun, Jan 18
American Airlines Logo
12:16 pm - 8:40 am
BOS
-
EAS
14h 24m2 stops
American Airlines Logo
1:40 pm - 10:56 pm
EAS
-
BOS
15h 16m2 stops
$558American Airlines
Thu, Jan 8 - Wed, Jan 21
Multiple Airlines Logo
4:45 pm - 8:40 am
BOS
-
EAS
9h 55m1 stop
Multiple Airlines Logo
9:20 am - 9:55 pm
EAS
-
BOS
18h 35m2 stops
$565Multiple Airlines
Thu, Jan 8 - Tue, Jan 20
Multiple Airlines Logo
9:20 pm - 8:50 pm
BOS
-
EAS
17h 30m1 stop
Multiple Airlines Logo
1:40 pm - 9:55 pm
EAS
-
BOS
14h 15m2 stops
$602Multiple Airlines
Fri, Jan 9 - Wed, Jan 21
Iberia Logo
8:25 pm - 8:40 am
BOS
-
EAS
31h 15m2 stops
Iberia Logo
1:40 pm - 3:20 pm
EAS
-
BOS
30h 40m2 stops
$624Iberia
Sun, Mar 15 - Sat, Mar 21

Iberia flights from Massachusetts to San Sebastian

Our best Iberia deals on Massachusetts to San Sebastian flight tickets
Iberia
Mar 15
BOS5:45 pmBoston Logan Intl
9h 55m
1 stop
EAS8:40 amSan Sebastián
Mar 21
EAS1:40 pmSan Sebastián
30h 40m
2 stops
BOS3:20 pmBoston Logan Intl
$545
Find similar
Iberia
Mar 15
BOS8:25 pmBoston Logan Intl
31h 15m
2 stops
EAS8:40 amSan Sebastián
Mar 21
EAS1:40 pmSan Sebastián
30h 40m
2 stops
BOS3:20 pmBoston Logan Intl
$624
Find similar
Iberia
Apr 24
BOS12:57 pmBoston Logan Intl
13h 43m
2 stops
EAS8:40 amSan Sebastián
May 2
EAS9:30 pmSan Sebastián
28h 20m
1 stop
BOS7:50 pmBoston Logan Intl
$633
Find similar

American Airlines flights from Massachusetts to San Sebastian

Our best American Airlines deals on Massachusetts to San Sebastian flight tickets
American Airlines
Jan 14
BOS9:45 amBoston Logan Intl
16h 55m
2 stops
EAS8:40 amSan Sebastián
Jan 18
EAS1:40 pmSan Sebastián
15h 16m
2 stops
BOS10:56 pmBoston Logan Intl
$549
Find similar
American Airlines
Jan 8
BOS12:16 pmBoston Logan Intl
14h 24m
2 stops
EAS8:40 amSan Sebastián
Jan 21
EAS1:40 pmSan Sebastián
15h 16m
2 stops
BOS10:56 pmBoston Logan Intl
$558
Find similar
American Airlines
Mar 15
BOS11:55 amBoston Logan Intl
15h 45m
2 stops
EAS8:40 amSan Sebastián
Mar 20
EAS1:40 pmSan Sebastián
12h 10m
1 stop
BOS8:50 pmBoston Logan Intl
$791
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Massachusetts to San Sebastian 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, momondo users made 832,500 searches. Data last updated December 14, 2025.
Use the filters below to find and compare flights from Massachusetts to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 1/8

4:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Wed 1/21

1:40 pm-7:50 pm

1 stop12h 10m

$498

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 1/8

4:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Wed 1/21

1:40 pm-10:56 pm

2 stops15h 16m

$508

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 1/8

4:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Thu 1/22

9:30 pm-3:15 pm

1 stop23h 45m

$523

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Fri 1/9

9:20 pm-8:50 pm

1 stop17h 30m

San Sebastián

Thu 1/22

9:30 pm-3:15 pm

1 stop23h 45m

$538

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 3/15

5:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Sat 3/21

1:40 pm-3:20 pm

2 stops30h 40m

$545

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Wed 1/14

9:45 am-8:40 am

2 stops16h 55m

San Sebastián

Sun 1/18

1:40 pm-10:56 pm

2 stops15h 16m

$549

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 1/8

12:16 pm-8:40 am

2 stops14h 24m

San Sebastián

Wed 1/21

1:40 pm-10:56 pm

2 stops15h 16m

$558

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 1/8

4:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Tue 1/20

9:20 am-9:55 pm

2 stops18h 35m

$565

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Fri 1/9

9:20 pm-8:50 pm

1 stop17h 30m

San Sebastián

Wed 1/21

1:40 pm-9:55 pm

2 stops14h 15m

$602

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 3/15

8:25 pm-8:40 am

2 stops31h 15m

San Sebastián

Sat 3/21

1:40 pm-3:20 pm

2 stops30h 40m

$624

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Sebastian from

How to get the cheapest flight ticket from Massachusetts 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

What is the cheapest month to fly to San Sebastian?

The month of November is, on average, the cheapest month to fly to San Sebastian from Massachusetts, with most prices found around $517. If you are unable to visit San Sebastian during the month of November, then departing from Massachusetts during the month September is also very affordable. Most momondo users find prices during this month for around $547.

What is the cheapest day to depart on your flight to San Sebastian?

On average, the least expensive day to fly to San Sebastian from Massachusetts is on a Thursday. momondo users have found tickets for Thursday departures for as low as $649. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Massachusetts to San Sebastian for around $1,316.

What is the cheapest time of day to depart on your flight to San Sebastian?

Flying to San Sebastian from Massachusetts in the morning is the least expensive time of day to depart. momondo users have found prices as low as $822 when looking at flights departing in the morning. Flights to San Sebastian are more costly in the evening, with an average ticket price of $986. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Massachusetts to San Sebastian flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Massachusetts to San Sebastian

Fastest flight time

9h 55m

Direct flights

None
The fastest flight from Massachusetts to San Sebastian takes 9h 55m
There are no direct flights from Massachusetts to San Sebastian. There are no popular flight routes from Massachusetts to San Sebastian.
Search flight deals

  • When did momondo last update prices for flights from Massachusetts to San Sebastián Airport?

    Prices for flights from Massachusetts to San Sebastián Airport refresh daily.

  • How many operators does momondo search for flights from Massachusetts to San Sebastián Airport?

  • How old do you have to be to fly from Massachusetts to San Sebastián Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Massachusetts to San Sebastián Airport.

  • What documentation or ID do you need to fly to San Sebastián Airport?

    The travel and health documents required for your trip to San Sebastián Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Sebastián Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Massachusetts to San Sebastian

Compare and see reviews for airlines that fly from Massachusetts to San Sebastian with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $450Free CancellationRating
7.2
11,051 reviews
Search American Airlines flights
IberiaPriceFrom $522Free CancellationRating
7.0
3,051 reviews
Search Iberia flights

Traveling to a place near San Sebastian?

Book flights to San Sebastian if you plan to visit one of these locations
Irun
Hondarribia

Why use momondo?

Why should I use momondo to find a flight deal from Massachusetts to San Sebastian?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Massachusetts to San Sebastian. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Massachusetts to San Sebastian with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Sebastian from Massachusetts with this policy.

How can momondo help me find flights from Massachusetts to San Sebastian?

Once you have performed a search for Massachusetts to San Sebastian flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Massachusetts to San Sebastian right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Massachusetts to San Sebastian flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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