What airlines fly to San Sebastian?

Iberia, Lufthansa and American Airlines are the top three most popular airlines that fly to San Sebastian from Boston according to our data. Iberia is the first choice among our users, with 62% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 7 different airlines that fly to San Sebastian on a routine basis, so you have a few additional options to choose from.

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 January 2026, there are 2 operators 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.

$397 Cheap Flights from Boston to San Sebastian in 2026

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Find the cheapest flights from Boston to San Sebastian

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Cheap round-trip flights

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12:26 pm - 8:40 am

BOS

EAS

14h 14m2 stops

9:20 am - 4:15 pm

EAS

BOS

11h 55m1 stop

$421American Airlines

Sun, Feb 22 - Tue, Mar 10

9:20 pm - 8:50 pm

BOS

EAS

17h 30m1 stop

9:30 pm - 8:50 pm

EAS

BOS

28h 20m1 stop

$437Multiple Airlines

Sun, Feb 22 - Tue, Mar 10

9:20 pm - 1:00 pm

BOS

EAS

9h 40m1 stop

1:40 pm - 7:50 pm

EAS

BOS

12h 10m1 stop

$469Iberia

Sun, Feb 22 - Sun, Mar 1

5:10 pm - 1:00 pm

BOS

EAS

13h 50m2 stops

1:40 pm - 7:50 pm

EAS

BOS

12h 10m1 stop

$473Iberia

Sun, Feb 22 - Sun, Mar 1

5:15 pm - 1:00 pm

BOS

EAS

13h 45m2 stops

1:40 pm - 10:48 pm

EAS

BOS

15h 08m2 stops

$498American Airlines

Sun, Feb 22 - Sun, Mar 1

11:55 am - 8:40 am

BOS

EAS

14h 45m2 stops

9:20 am - 7:19 pm

EAS

BOS

14h 59m2 stops

$509Iberia

Sun, Feb 22 - Tue, Mar 10

4:02 pm - 8:40 am

BOS

EAS

34h 38m2 stops

9:30 pm - 7:50 pm

EAS

BOS

28h 20m1 stop

$525Iberia

Sat, Feb 21 - Sat, Feb 28

4:45 pm - 8:40 am

BOS

EAS

9h 55m1 stop

9:30 pm - 7:50 pm

EAS

BOS

28h 20m1 stop

$529Iberia

Sat, Feb 7 - Sat, Feb 14

9:20 pm - 8:50 pm

BOS

EAS

17h 30m1 stop

2:05 pm - 8:55 pm

EAS

BOS

12h 50m1 stop

$531Iberia

Sat, Feb 21 - Sat, Feb 28

5:20 pm - 8:40 am

BOS

EAS

33h 20m2 stops

9:30 pm - 7:50 pm

EAS

BOS

28h 20m1 stop

$533Iberia

Sat, Feb 7 - Sat, Feb 14

American Airlines flights from Boston to San Sebastian

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

American Airlines

Feb 22

BOS12:26 pmBoston Logan Intl

14h 14m

2 stops

EAS8:40 amSan Sebastián

Mar 10

EAS9:20 amSan Sebastián

11h 55m

1 stop

BOS4:15 pmBoston Logan Intl

$421

American Airlines

Jun 21

BOS12:00 pmBoston Logan Intl

14h 40m

2 stops

EAS8:40 amSan Sebastián

Jun 30

EAS9:20 amSan Sebastián

12h 50m

1 stop

BOS4:10 pmBoston Logan Intl

$908

American Airlines

Jun 19

BOS6:00 amBoston Logan Intl

25h 00m

2 stops

EAS1:00 pmSan Sebastián

Jun 30

EAS9:20 amSan Sebastián

12h 50m

1 stop

BOS4:10 pmBoston Logan Intl

$923

Iberia flights from Boston to San Sebastian

Our best Iberia deals on Boston to San Sebastian flight tickets

Iberia

Feb 22

BOS11:55 amBoston Logan Intl

14h 45m

2 stops

EAS8:40 amSan Sebastián

Mar 10

EAS9:20 amSan Sebastián

14h 59m

2 stops

BOS7:19 pmBoston Logan Intl

$509

Iberia

Feb 21

BOS4:02 pmBoston Logan Intl

34h 38m

2 stops

EAS8:40 amSan Sebastián

Feb 28

EAS9:30 pmSan Sebastián

28h 20m

1 stop

BOS7:50 pmBoston Logan Intl

$525

Iberia

Feb 7

BOS4:45 pmBoston Logan Intl

9h 55m

1 stop

EAS8:40 amSan Sebastián

Feb 14

EAS9:30 pmSan Sebastián

28h 20m

1 stop

BOS7:50 pmBoston Logan Intl

$529

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 2/22

12:26 pm-8:40 am

2 stops14h 14m

San Sebastián

Tue 3/10

9:20 am-4:15 pm

1 stop11h 55m

$421

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 2/22

9:20 pm-8:50 pm

1 stop17h 30m

San Sebastián

Tue 3/10

9:30 pm-8:50 pm

1 stop28h 20m

$437

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 2/22

9:20 pm-1:00 pm

1 stop9h 40m

San Sebastián

Sun 3/1

1:40 pm-7:50 pm

1 stop12h 10m

$469

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 2/22

5:10 pm-1:00 pm

2 stops13h 50m

San Sebastián

Sun 3/1

1:40 pm-7:50 pm

1 stop12h 10m

$473

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 2/22

5:15 pm-1:00 pm

2 stops13h 45m

San Sebastián

Sun 3/1

1:40 pm-10:48 pm

2 stops15h 08m

$498

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 2/22

11:55 am-8:40 am

2 stops14h 45m

San Sebastián

Tue 3/10

9:20 am-7:19 pm

2 stops14h 59m

$509

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sat 2/21

4:02 pm-8:40 am

2 stops34h 38m

San Sebastián

Sat 2/28

9:30 pm-7:50 pm

1 stop28h 20m

$525

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sat 2/7

4:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Sat 2/14

9:30 pm-7:50 pm

1 stop28h 20m

$529

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sat 2/21

9:20 pm-8:50 pm

1 stop17h 30m

San Sebastián

Sat 2/28

2:05 pm-8:55 pm

1 stop12h 50m

$531

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sat 2/7

5:20 pm-8:40 am

2 stops33h 20m

San Sebastián

Sat 2/14

9:30 pm-7:50 pm

1 stop28h 20m

$533

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 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

Prices

Airlines

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 Boston, with most prices found around $517. If you are unable to visit San Sebastian during the month of November, then departing from Boston during the month September is also very affordable. Most momondo users find prices during this month for around $572.

When to book flights from Boston to San Sebastian

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to San Sebastian according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

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

Fastest flight time	9h 55m
Direct flights	None

The fastest flight from Boston to San Sebastian takes 9h 55m

There are no direct flights from Boston to San Sebastian. There are no popular flight routes from Boston to San Sebastian.

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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 9h 55m, 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 January 2026, there are 2 operators 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 68% of all bookings. The subsequent popular airline is American Airlines at 32%.

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
American Airlines	PriceFrom $450	Free Cancellation	Rating 7.2 11,095 reviews		Search American Airlines flights
Iberia	PriceFrom $487	Free Cancellation	Rating 7.0 3,079 reviews		Search Iberia flights

Irun

Hondarribia

Why use momondo?

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.