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 61% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 8 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.

$449 Cheap Flights from Boston to San Sebastian in 2026

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Find the cheapest flights from Boston to San Sebastian

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:45 pm - 8:40 am

BOS

EAS

9h 55m

1 stop

1:40 pm - 8:50 pm

EAS

BOS

12h 10m

1 stop

$449Iberia

Tue, Mar 10 - Tue, Mar 17

9:20 pm - 8:50 pm

BOS

EAS

17h 30m

1 stop

2:05 pm - 9:55 pm

EAS

BOS

12h 50m

1 stop

$452Iberia

Sun, Feb 22 - Tue, Mar 10

11:55 am - 8:40 am

BOS

EAS

15h 45m

2 stops

1:40 pm - 8:50 pm

EAS

BOS

12h 10m

1 stop

$453American Airlines

Tue, Mar 10 - Tue, Mar 17

9:20 pm - 8:50 pm

BOS

EAS

17h 30m

1 stop

9:20 am - 7:19 pm

EAS

BOS

14h 59m

2 stops

$465Iberia

Sun, Feb 22 - Tue, Mar 10

10:50 pm - 8:50 pm

BOS

EAS

16h 00m

2 stops

5:55 pm - 9:05 pm

EAS

BOS

33h 10m

1 stop

$469Iberia

Tue, Apr 21 - Tue, Apr 28

10:50 pm - 8:50 pm

BOS

EAS

16h 00m

2 stops

9:20 am - 9:05 pm

EAS

BOS

17h 45m

2 stops

$476Iberia

Tue, Apr 21 - Tue, Apr 28

5:15 pm - 1:00 pm

BOS

EAS

13h 45m

2 stops

9:20 am - 7:19 pm

EAS

BOS

14h 59m

2 stops

$485American Airlines

Sun, Feb 22 - Tue, Mar 10

11:55 am - 8:40 am

BOS

EAS

15h 45m

2 stops

9:20 am - 8:52 pm

EAS

BOS

16h 32m

2 stops

$488American Airlines

Tue, Mar 10 - Tue, Mar 17

4:45 pm - 8:40 am

BOS

EAS

9h 55m

1 stop

9:30 pm - 10:48 pm

EAS

BOS

31h 18m

2 stops

$495Iberia

Mon, Feb 9 - Mon, Feb 23

9:20 pm - 8:50 pm

BOS

EAS

17h 30m

1 stop

9:30 pm - 7:50 pm

EAS

BOS

28h 20m

1 stop

$509Iberia

Sun, Feb 22 - Sun, Mar 1

Iberia flights from Boston to San Sebastian

Our best Iberia deals on Boston to San Sebastian flight tickets

Iberia

Mar 10

BOS5:45 pmBoston Logan Intl

9h 55m

1 stop

EAS8:40 amSan Sebastián

Mar 17

EAS1:40 pmSan Sebastián

12h 10m

1 stop

BOS8:50 pmBoston Logan Intl

$449

Iberia

Feb 22

BOS9:20 pmBoston Logan Intl

17h 30m

1 stop

EAS8:50 pmSan Sebastián

Mar 10

EAS2:05 pmSan Sebastián

12h 50m

1 stop

BOS9:55 pmBoston Logan Intl

$452

Iberia

Feb 22

BOS9:20 pmBoston Logan Intl

17h 30m

1 stop

EAS8:50 pmSan Sebastián

Mar 10

EAS9:20 amSan Sebastián

14h 59m

2 stops

BOS7:19 pmBoston Logan Intl

$465

American Airlines flights from Boston to San Sebastian

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

American Airlines

Mar 10

BOS11:55 amBoston Logan Intl

15h 45m

2 stops

EAS8:40 amSan Sebastián

Mar 17

EAS1:40 pmSan Sebastián

12h 10m

1 stop

BOS8:50 pmBoston Logan Intl

$453

American Airlines

Feb 22

BOS5:15 pmBoston Logan Intl

13h 45m

2 stops

EAS1:00 pmSan Sebastián

Mar 10

EAS9:20 amSan Sebastián

14h 59m

2 stops

BOS7:19 pmBoston Logan Intl

$485

American Airlines

Mar 10

BOS11:55 amBoston Logan Intl

15h 45m

2 stops

EAS8:40 amSan Sebastián

Mar 17

EAS9:20 amSan Sebastián

16h 32m

2 stops

BOS8:52 pmBoston Logan Intl

$488

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 3/10

5:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Tue 3/17

1:40 pm-8:50 pm

1 stop12h 10m

$449

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

2:05 pm-9:55 pm

1 stop12h 50m

$452

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 3/10

11:55 am-8:40 am

2 stops15h 45m

San Sebastián

Tue 3/17

1:40 pm-8:50 pm

1 stop12h 10m

$453

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

9:20 am-7:19 pm

2 stops14h 59m

$465

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 4/21

10:50 pm-8:50 pm

2 stops16h 00m

San Sebastián

Tue 4/28

5:55 pm-9:05 pm

1 stop33h 10m

$469

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 4/21

10:50 pm-8:50 pm

2 stops16h 00m

San Sebastián

Tue 4/28

9:20 am-9:05 pm

2 stops17h 45m

$476

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 2/22

5:15 pm-1:00 pm

2 stops13h 45m

San Sebastián

Tue 3/10

9:20 am-7:19 pm

2 stops14h 59m

$485

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 3/10

11:55 am-8:40 am

2 stops15h 45m

San Sebastián

Tue 3/17

9:20 am-8:52 pm

2 stops16h 32m

$488

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 2/9

4:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Mon 2/23

9:30 pm-10:48 pm

2 stops31h 18m

$495

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 2/22

9:20 pm-8:50 pm

1 stop17h 30m

San Sebastián

Sun 3/1

9:30 pm-7:50 pm

1 stop28h 20m

$509

Flights are sorted by cheapest round-trip flights first.

Sorted 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	17h 30m
Direct flights	None

The fastest flight from Boston to San Sebastian takes 17h 30m

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

Search flight deals

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 17h 30m, 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 65% of all bookings. The subsequent popular airline is American Airlines at 35%.

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 11,189 reviews		Search American Airlines flights
Iberia	PriceFrom $487	Free Cancellation	Rating 7.0 3,098 reviews		Search Iberia flights

Irun

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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.