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Cheap flights from Massachusetts to San Sebastian from $273

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 9/1. 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

Iberia Logo
4:30 pm - 8:40 amBOS-EAS
10h 10m1 stop
Iberia Logo
1:40 pm - 7:50 pmEAS-BOS
12h 10m1 stop
$467Iberia
Find Deal
Tue, Sep 16 - Tue, Oct 7
Iberia Logo
4:30 pm - 8:40 amBOS-EAS
10h 10m1 stop
Iberia Logo
1:40 pm - 7:50 pmEAS-BOS
12h 10m1 stop
$470Iberia
Find Deal
Sun, Sep 21 - Tue, Sep 30
American Airlines Logo
9:38 am - 8:40 amBOS-EAS
17h 02m2 stops
American Airlines Logo
1:40 pm - 7:50 pmEAS-BOS
12h 10m1 stop
$475American Airlines
Find Deal
Sun, Sep 21 - Tue, Sep 30
Iberia Logo
4:30 pm - 8:40 amBOS-EAS
10h 10m1 stop
Iberia Logo
9:30 pm - 7:50 pmEAS-BOS
28h 20m1 stop
$507Iberia
Find Deal
Sat, Sep 20 - Tue, Sep 30
American Airlines Logo
1:00 pm - 8:40 amBOS-EAS
13h 40m2 stops
American Airlines Logo
1:40 pm - 7:50 pmEAS-BOS
12h 10m1 stop
$525American Airlines
Find Deal
Sat, Sep 20 - Tue, Sep 30
Iberia Logo
4:30 pm - 8:40 amBOS-EAS
10h 10m1 stop
Iberia Logo
9:20 am - 9:15 pmEAS-BOS
17h 55m2 stops
$530Iberia
Find Deal
Tue, Sep 16 - Tue, Oct 7
Iberia Logo
9:20 pm - 1:00 pmBOS-EAS
9h 40m1 stop
Iberia Logo
1:40 pm - 10:46 pmEAS-BOS
15h 06m2 stops
$531Iberia
Find Deal
Wed, Nov 5 - Mon, Nov 10
British Airways Logo
6:30 am - 12:40 pmBOS-EAS
24h 10m2 stops
British Airways Logo
5:00 pm - 5:10 pmEAS-BOS
30h 10m1 stop
$752British Airways
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Wed, Sep 24 - Sun, Oct 5
Logo
8:50 pm - 8:30 amBOS-EAS
29h 40m3 stops
Logo
5:55 pm - 2:20 pmEAS-BOS
26h 25m2 stops
$884
Find Deal
Wed, Aug 27 - Sun, Sep 7
Logo
8:50 pm - 8:30 amBOS-EAS
29h 40m3 stops
Logo
5:55 pm - 2:20 pmEAS-BOS
26h 25m2 stops
$890
Find Deal
Wed, Aug 27 - Sun, Sep 7

Iberia flights from Massachusetts to San Sebastian

Our best Iberia deals on Massachusetts to San Sebastian flight tickets
Iberia
Sep 16
BOS4:30 pmBoston Logan Intl
10h 10m
1 stop
EAS8:40 amSan Sebastián
Oct 7
EAS1:40 pmSan Sebastián
12h 10m
1 stop
BOS7:50 pmBoston Logan Intl
$467
Find similar
Iberia
Sep 21
BOS4:30 pmBoston Logan Intl
10h 10m
1 stop
EAS8:40 amSan Sebastián
Sep 30
EAS1:40 pmSan Sebastián
12h 10m
1 stop
BOS7:50 pmBoston Logan Intl
$470
Find similar
Iberia
Sep 20
BOS4:30 pmBoston Logan Intl
10h 10m
1 stop
EAS8:40 amSan Sebastián
Sep 30
EAS9:30 pmSan Sebastián
28h 20m
1 stop
BOS7:50 pmBoston Logan Intl
$507
Find similar

American Airlines flights from Massachusetts to San Sebastian

Our best American Airlines deals on Massachusetts to San Sebastian flight tickets
American Airlines
Sep 21
BOS9:38 amBoston Logan Intl
17h 02m
2 stops
EAS8:40 amSan Sebastián
Sep 30
EAS1:40 pmSan Sebastián
12h 10m
1 stop
BOS7:50 pmBoston Logan Intl
$475
Find similar
American Airlines
Sep 20
BOS1:00 pmBoston Logan Intl
13h 40m
2 stops
EAS8:40 amSan Sebastián
Sep 30
EAS1:40 pmSan Sebastián
12h 10m
1 stop
BOS7:50 pmBoston Logan Intl
$525
Find similar
American Airlines
Sep 20
BOS1:00 pmBoston Logan Intl
13h 40m
2 stops
EAS8:40 amSan Sebastián
Sep 30
EAS9:20 amSan Sebastián
15h 29m
2 stops
BOS6:49 pmBoston Logan Intl
$662
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 August 6, 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

Tue 9/16

4:30 pm-8:40 am

1 stop10h 10m

San Sebastián

Tue 10/7

1:40 pm-7:50 pm

1 stop12h 10m

$467

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 9/21

4:30 pm-8:40 am

1 stop10h 10m

San Sebastián

Tue 9/30

1:40 pm-7:50 pm

1 stop12h 10m

$470

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 9/21

9:38 am-8:40 am

2 stops17h 02m

San Sebastián

Tue 9/30

1:40 pm-7:50 pm

1 stop12h 10m

$475

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sat 9/20

4:30 pm-8:40 am

1 stop10h 10m

San Sebastián

Tue 9/30

9:30 pm-7:50 pm

1 stop28h 20m

$507

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sat 9/20

1:00 pm-8:40 am

2 stops13h 40m

San Sebastián

Tue 9/30

1:40 pm-7:50 pm

1 stop12h 10m

$525

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 9/16

4:30 pm-8:40 am

1 stop10h 10m

San Sebastián

Tue 10/7

9:20 am-9:15 pm

2 stops17h 55m

$530

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Wed 11/5

9:20 pm-1:00 pm

1 stop9h 40m

San Sebastián

Mon 11/10

1:40 pm-10:46 pm

2 stops15h 06m

$531

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Wed 9/24

6:30 am-12:40 pm

2 stops24h 10m

San Sebastián

Sun 10/5

5:00 pm-5:10 pm

1 stop30h 10m

$752

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Wed 8/27

8:50 pm-8:30 am

3 stops29h 40m

San Sebastián

Sun 9/7

5:55 pm-2:20 pm

2 stops26h 25m

$884

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Wed 8/27

8:50 pm-8:30 am

3 stops29h 40m

San Sebastián

Sun 9/7

5:55 pm-2:20 pm

2 stops26h 25m

$890

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 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

Best Price Found

$273

Fastest flight time

9h 40m

Direct flights

None

Airports in San Sebastian

1 airport
The best one-way flight to San Sebastian from Massachusetts in the past 72 hours is $273. The best round-trip flight deal from Massachusetts to San Sebastian found on momondo in the last 72 hours is $467.
The fastest flight from Massachusetts to San Sebastian takes 9h 40m
There are no direct flights from Massachusetts to San Sebastian. Popular non-direct route for this connection is Boston Logan Intl Airport - San Sebastián Airport.
There is 1 airport near San Sebastian: San Sebastián (EAS)
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
IberiaPriceFrom $586Free CancellationRating
7.0
2,865 reviews
Search Iberia flights
American AirlinesPriceFrom $613Free CancellationRating
7.2
10,000 reviews
Search American Airlines 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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