What is the cheapest airline that flies from Massachusetts to San Sebastián?

Iberia is the most popular carrier operating from Massachusetts to San Sebastián

What airlines fly to San Sebastian?

Iberia, KLM and Delta are the top three most popular airlines that fly to San Sebastian from Massachusetts according to our data. Iberia is the first choice among our users, with 34% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 10 different airlines that fly to San Sebastian on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to San Sebastian?

On average, it takes 9h 20m to fly from Massachusetts to San Sebastian if you fly out of Boston (the most popular airport in Massachusetts) and into Bilbao (the most popular airport in San Sebastian). If you’re flying out of Provincetown and into Bilbao, then the flight time is around 19h 57m.

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?

As of September 2026, there is 1 operator available to choose from 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.

$395 Cheap Flights from Massachusetts to San Sebastian in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Massachusetts to San Sebastian

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:01 pm - 4:55 pmBOS Boston Logan Intl-EAS San Sebastián

22h 54m2 stops New York John F Kennedy Intl Madrid Barajas

9:20 am - 6:25 pmEAS San Sebastián-BOS Boston Logan Intl

15h 05m1 stop Madrid Barajas

$658Iberia

Sat, Nov 14 - Sat, Nov 21

5:15 pm - 1:35 pmBOS Boston Logan Intl-EAS San Sebastián

14h 20m2 stops Dublin Barcelona-El Prat

2:10 pm - 2:30 pmEAS San Sebastián-BOS Boston Logan Intl

30h 20m2 stops Barcelona-El Prat Lisbon Humberto Delgado

$846Multiple Airlines

Wed, Nov 11 - Wed, Nov 18

8:00 pm - 4:55 pmBOS Boston Logan Intl-EAS San Sebastián

14h 55m1 stop Madrid Barajas

9:20 am - 6:25 pmEAS San Sebastián-BOS Boston Logan Intl

15h 05m1 stop Madrid Barajas

$849Multiple Airlines

Sat, Nov 14 - Sat, Nov 21

8:00 pm - 1:00 pmBOS Boston Logan Intl-EAS San Sebastián

11h 00m1 stop Madrid Barajas

9:20 am - 11:44 pmEAS San Sebastián-BOS Boston Logan Intl

20h 24m2 stops Madrid Barajas New York John F Kennedy Intl

$885Multiple Airlines

Wed, Nov 11 - Wed, Nov 18

5:15 pm - 8:50 pmBOS Boston Logan Intl-EAS San Sebastián

21h 35m2 stops Dublin Madrid Barajas

9:30 pm - 6:25 pmEAS San Sebastián-BOS Boston Logan Intl

26h 55m1 stop Madrid Barajas

$890Multiple Airlines

Tue, Nov 24 - Tue, Dec 1

7:50 pm - 5:35 pmBOS Boston Logan Intl-EAS San Sebastián

15h 45m2 stops Reykjavik Keflavik Intl Barcelona-El Prat

2:10 pm - 2:00 pmEAS San Sebastián-BOS Boston Logan Intl

29h 50m2 stops Barcelona-El Prat Lisbon Humberto Delgado

$893Multiple Airlines

Sat, Nov 14 - Sat, Nov 21

5:15 pm - 1:35 pmBOS Boston Logan Intl-EAS San Sebastián

14h 20m2 stops Dublin Barcelona-El Prat

9:30 pm - 6:25 pmEAS San Sebastián-BOS Boston Logan Intl

26h 55m1 stop Madrid Barajas

$914Multiple Airlines

Thu, Nov 26 - Tue, Dec 1

5:15 pm - 1:35 pmBOS Boston Logan Intl-EAS San Sebastián

14h 20m2 stops Dublin Barcelona-El Prat

2:10 pm - 8:00 pmEAS San Sebastián-BOS Boston Logan Intl

35h 50m3 stops Barcelona-El Prat Lisbon Humberto Delgado Ponta Delgada Nordela

$914Multiple Airlines

Wed, Nov 11 - Wed, Nov 18

5:15 pm - 1:35 pmBOS Boston Logan Intl-EAS San Sebastián

14h 20m2 stops Dublin Barcelona-El Prat

9:30 pm - 6:25 pmEAS San Sebastián-BOS Boston Logan Intl

26h 55m1 stop Madrid Barajas

$914Multiple Airlines

Fri, Nov 27 - Tue, Dec 1

8:00 pm - 1:00 pmBOS Boston Logan Intl-EAS San Sebastián

11h 00m1 stop Madrid Barajas

1:40 pm - 6:25 pmEAS San Sebastián-BOS Boston Logan Intl

10h 45m1 stop Madrid Barajas

$932Iberia

Wed, Nov 11 - Wed, Nov 18

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American Airlines flights from Massachusetts to San Sebastian

Our best American Airlines deals on Massachusetts to San Sebastian flight tickets

American Airlines

Oct 25

BOS8:15 pmBoston Logan Intl

11h 25m

1 stop

EAS12:40 pmSan Sebastián

Nov 10

EAS9:20 amSan Sebastián

14h 40m

1 stop

BOS6:00 pmBoston Logan Intl

$934

American Airlines

Oct 25

BOS5:45 pmBoston Logan Intl

13h 55m

2 stops

EAS12:40 pmSan Sebastián

Nov 10

EAS1:40 pmSan Sebastián

16h 04m

2 stops

BOS11:44 pmBoston Logan Intl

$939

American Airlines

Oct 20

BOS9:20 pmBoston Logan Intl

9h 40m

1 stop

EAS1:00 pmSan Sebastián

Oct 25

EAS1:40 pmSan Sebastián

24h 56m

2 stops

BOS9:36 amBoston Logan Intl

$1,327

Iberia flights from Massachusetts to San Sebastian

Our best Iberia deals on Massachusetts to San Sebastian flight tickets

Iberia

Nov 14

BOS12:01 pmBoston Logan Intl

22h 54m

2 stops

EAS4:55 pmSan Sebastián

Nov 21

EAS9:20 amSan Sebastián

15h 05m

1 stop

BOS6:25 pmBoston Logan Intl

$658

Iberia

Nov 11

BOS8:00 pmBoston Logan Intl

11h 00m

1 stop

EAS1:00 pmSan Sebastián

Nov 18

EAS1:40 pmSan Sebastián

10h 45m

1 stop

BOS6:25 pmBoston Logan Intl

$932

Iberia

Nov 28

BOS8:00 pmBoston Logan Intl

14h 55m

1 stop

EAS4:55 pmSan Sebastián

Dec 1

EAS9:30 pmSan Sebastián

26h 55m

1 stop

BOS6:25 pmBoston Logan Intl

$953

momondo Fare Finder

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 Boston Logan Intl - EAS San Sebastián

BOSEAS

Boston Logan Intl

Sat 11/14

12:01 pm-4:55 pm

2 stops22h 54m

San Sebastián

Sat 11/21

9:20 am-6:25 pm

1 stop15h 05m

$658

BostonSan Sebastian

BOS Boston Logan Intl - EAS San Sebastián

BOSEAS

Boston Logan Intl

Wed 11/11

5:15 pm-1:35 pm

2 stops14h 20m

San Sebastián

Wed 11/18

2:10 pm-2:30 pm

2 stops30h 20m

$846

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

9:20 am-6:25 pm

1 stop15h 05m

$849

BostonSan Sebastian

BOS Boston Logan Intl - EAS San Sebastián

BOSEAS

Boston Logan Intl

Wed 11/11

8:00 pm-1:00 pm

1 stop11h 00m

San Sebastián

Wed 11/18

9:20 am-11:44 pm

2 stops20h 24m

$885

BostonSan Sebastian

BOS Boston Logan Intl - EAS San Sebastián

BOSEAS

Boston Logan Intl

Tue 11/24

5:15 pm-8:50 pm

2 stops21h 35m

San Sebastián

Tue 12/1

9:30 pm-6:25 pm

1 stop26h 55m

$890

BostonSan Sebastian

BOS Boston Logan Intl - EAS San Sebastián

BOSEAS

Boston Logan Intl

Sat 11/14

7:50 pm-5:35 pm

2 stops15h 45m

San Sebastián

Sat 11/21

2:10 pm-2:00 pm

2 stops29h 50m

$893

BostonSan Sebastian

BOS Boston Logan Intl - EAS San Sebastián

BOSEAS

Boston Logan Intl

Thu 11/26

5:15 pm-1:35 pm

2 stops14h 20m

San Sebastián

Tue 12/1

9:30 pm-6:25 pm

1 stop26h 55m

$914

BostonSan Sebastian

BOS Boston Logan Intl - EAS San Sebastián

BOSEAS

Boston Logan Intl

Wed 11/11

5:15 pm-1:35 pm

2 stops14h 20m

San Sebastián

Wed 11/18

2:10 pm-8:00 pm

3 stops35h 50m

$914

BostonSan Sebastian

BOS Boston Logan Intl - EAS San Sebastián

BOSEAS

Boston Logan Intl

Fri 11/27

5:15 pm-1:35 pm

2 stops14h 20m

San Sebastián

Tue 12/1

9:30 pm-6:25 pm

1 stop26h 55m

$914

Quickest round-trip

BostonSan Sebastian

BOS Boston Logan Intl - EAS San Sebastián

BOSEAS

Boston Logan Intl

Wed 11/11

8:00 pm-1:00 pm

1 stop11h 00m

San Sebastián

Wed 11/18

1:40 pm-6:25 pm

1 stop10h 45m

$932

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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 $0. If you are unable to visit San Sebastian during the month of November, then departing from Massachusetts during the month February is also very affordable. Most momondo users find prices during this month for around $697.

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	$395
Fastest flight time	12h 45m
Direct flights	None

The best one-way flight to San Sebastian from Massachusetts in the past 72 hours is $395. The best round-trip flight deal from Massachusetts to San Sebastian found on momondo in the last 72 hours is $658.

The fastest flight from Massachusetts to San Sebastian takes 12h 45m

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?
As of September 2026, there is 1 operator available to choose from 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
Iberia	PriceFrom $487	Free Cancellation	Rating 7.0 3,251 reviews		Search Iberia flights

Irun

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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Cheap flights from Massachusetts to San Sebastian from $395

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 10/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Massachusetts to San Sebastian

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Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

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American Airlines flights from Massachusetts to San Sebastian

Our best American Airlines deals on Massachusetts to San Sebastian flight tickets

Iberia flights from Massachusetts to San Sebastian

Our best Iberia deals on Massachusetts to San Sebastian flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Massachusetts to San Sebastian that are best for you.

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How to get the cheapest flight ticket from Massachusetts to San Sebastian

What is the cheapest month to fly to San Sebastian?

What is the cheapest airline that flies from Massachusetts to San Sebastián?

What airlines fly to San Sebastian?

How long does it take to fly to San Sebastian?

Cheap Massachusetts to San Sebastian flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Massachusetts to San Sebastian

Best airlines flying from Massachusetts to San Sebastian

Compare and see reviews for airlines that fly from Massachusetts to San Sebastian with momondo

Traveling to a place near San Sebastian?

Why use momondo?

An easier way to manage your San Sebastian trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Spain

Airports servicing Basque Country

Fly your favorite airline to San Sebastian

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to San Sebastian

List of cabin classes available on flights landing in San Sebastian. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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