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Cheap flights from Massachusetts to San Sebastian from $378

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Massachusetts to San Sebastian departing on 8/5. 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.
Iberia Logo
11:00 pm - 8:20 am
BOS
-
EAS
27h 20m
1 stop
Iberia Logo
8:55 am - 9:15 pm
EAS
-
BOS
18h 20m
1 stop
$581Iberia
Thu, Oct 1 - Wed, Oct 7
Iberia Logo
11:50 pm - 8:20 am
BOS
-
EAS
26h 30m
1 stop
Iberia Logo
8:55 am - 9:15 pm
EAS
-
BOS
18h 20m
1 stop
$609Iberia
Sun, Oct 18 - Wed, Oct 21
Iberia Logo
11:50 pm - 8:20 am
BOS
-
EAS
26h 30m
1 stop
Iberia Logo
5:55 pm - 9:15 pm
EAS
-
BOS
33h 20m
1 stop
$619Iberia
Sun, Sep 27 - Wed, Sep 30
Iberia Logo
5:40 pm - 1:00 pm
BOS
-
EAS
13h 20m
1 stop
Iberia Logo
8:55 am - 10:05 pm
EAS
-
BOS
19h 10m
1 stop
$704Iberia
Tue, Oct 13 - Sun, Oct 18
Iberia Logo
11:50 pm - 8:20 am
BOS
-
EAS
26h 30m
1 stop
Iberia Logo
5:55 pm - 9:15 pm
EAS
-
BOS
33h 20m
1 stop
$729Iberia
Sun, Sep 27 - Wed, Sep 30
Iberia Logo
1:01 pm - 8:40 am
BOS
-
EAS
13h 39m
2 stops
Iberia Logo
8:55 am - 10:05 pm
EAS
-
BOS
19h 10m
1 stop
$739Iberia
Tue, Oct 13 - Sun, Oct 18
Iberia Logo
11:35 pm - 8:20 am
BOS
-
EAS
26h 45m
1 stop
Iberia Logo
8:55 am - 9:45 pm
EAS
-
BOS
18h 50m
1 stop
$753Iberia
Thu, Aug 27 - Sun, Sep 6
LEVEL Logo
11:35 pm - 8:20 am
BOS
-
EAS
26h 45m
1 stop
LEVEL Logo
9:05 am - 9:45 pm
EAS
-
BOS
18h 40m
1 stop
$775LEVEL
Thu, Aug 20 - Thu, Aug 27
Iberia Logo
11:35 pm - 8:20 am
BOS
-
EAS
26h 45m
1 stop
Iberia Logo
8:55 am - 10:05 pm
EAS
-
BOS
19h 10m
1 stop
$781Iberia
Thu, Aug 27 - Sun, Sep 6
Multiple Airlines Logo
11:00 pm - 5:20 pm
BOS
-
EAS
12h 20m
1 stop
Multiple Airlines Logo
5:55 pm - 10:05 pm
EAS
-
BOS
34h 10m
1 stop
$782Multiple Airlines
Thu, Sep 10 - Sat, Sep 19

LEVEL flights from Massachusetts to San Sebastian

Our best LEVEL deals on Massachusetts to San Sebastian flight tickets
LEVEL
May 12
BOS10:50 pmBoston Logan Intl
27h 45m
1 stop
EAS8:35 amSan Sebastián
May 19
EAS8:55 amSan Sebastián
18h 10m
1 stop
BOS9:05 pmBoston Logan Intl
$757
LEVEL
Aug 20
BOS11:35 pmBoston Logan Intl
26h 45m
1 stop
EAS8:20 amSan Sebastián
Aug 27
EAS9:05 amSan Sebastián
18h 40m
1 stop
BOS9:45 pmBoston Logan Intl
$775
LEVEL
Aug 19
BOS10:55 pmBoston Logan Intl
27h 25m
1 stop
EAS8:20 amSan Sebastián
Aug 27
EAS9:05 amSan Sebastián
18h 40m
1 stop
BOS9:45 pmBoston Logan Intl
$795

Iberia flights from Massachusetts to San Sebastian

Our best Iberia deals on Massachusetts to San Sebastian flight tickets
Iberia
Oct 1
BOS11:00 pmBoston Logan Intl
27h 20m
1 stop
EAS8:20 amSan Sebastián
Oct 7
EAS8:55 amSan Sebastián
18h 20m
1 stop
BOS9:15 pmBoston Logan Intl
$581
Iberia
Oct 18
BOS11:50 pmBoston Logan Intl
26h 30m
1 stop
EAS8:20 amSan Sebastián
Oct 21
EAS8:55 amSan Sebastián
18h 20m
1 stop
BOS9:15 pmBoston Logan Intl
$609
Iberia
Sep 27
BOS11:50 pmBoston Logan Intl
26h 30m
1 stop
EAS8:20 amSan Sebastián
Sep 30
EAS5:55 pmSan Sebastián
33h 20m
1 stop
BOS9:15 pmBoston Logan Intl
$619

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 May 8, 2026.
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

Cheapest round-trip

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 10/1

11:00 pm-8:20 am

1 stop27h 20m

San Sebastián

Wed 10/7

8:55 am-9:15 pm

1 stop18h 20m

$581

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 10/18

11:50 pm-8:20 am

1 stop26h 30m

San Sebastián

Wed 10/21

8:55 am-9:15 pm

1 stop18h 20m

$609

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 9/27

11:50 pm-8:20 am

1 stop26h 30m

San Sebastián

Wed 9/30

5:55 pm-9:15 pm

1 stop33h 20m

$619
Quickest round-trip

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 10/13

5:40 pm-1:00 pm

1 stop13h 20m

San Sebastián

Sun 10/18

8:55 am-10:05 pm

1 stop19h 10m

$704

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 9/27

11:50 pm-8:20 am

1 stop26h 30m

San Sebastián

Wed 9/30

5:55 pm-9:15 pm

1 stop33h 20m

$729

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 10/13

1:01 pm-8:40 am

2 stops13h 39m

San Sebastián

Sun 10/18

8:55 am-10:05 pm

1 stop19h 10m

$739

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 8/27

11:35 pm-8:20 am

1 stop26h 45m

San Sebastián

Sun 9/6

8:55 am-9:45 pm

1 stop18h 50m

$753

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 8/20

11:35 pm-8:20 am

1 stop26h 45m

San Sebastián

Thu 8/27

9:05 am-9:45 pm

1 stop18h 40m

$775

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 8/27

11:35 pm-8:20 am

1 stop26h 45m

San Sebastián

Sun 9/6

8:55 am-10:05 pm

1 stop19h 10m

$781

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 9/10

11:00 pm-5:20 pm

1 stop12h 20m

San Sebastián

Sat 9/19

5:55 pm-10:05 pm

1 stop34h 10m

$782

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 October is, on average, the cheapest month to fly to San Sebastian from Massachusetts, with most prices found around $447. If you are unable to visit San Sebastian during the month of October, then departing from Massachusetts during the month August is also very affordable. Most momondo users find prices during this month for around $447.

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

12h 20m

Direct flights

None
The fastest flight from Massachusetts to San Sebastian takes 12h 20m
There are no direct flights from Massachusetts to San Sebastian. There are no popular flight routes from Massachusetts to San Sebastian.
Search flight deals

Frequently asked questions about flying from Massachusetts to San Sebastian

  • 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
7.1
11,667 reviews
Search American Airlines flights
IberiaPriceFrom $487Free CancellationRating
7.0
3,212 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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