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Cheap flights from Massachusetts to San Sebastian from $369

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.
LEVEL Logo
10:50 pm - 8:20 am
BOS
-
EAS
27h 30m
1 stop
LEVEL Logo
8:55 am - 9:05 pm
EAS
-
BOS
18h 10m
1 stop
$808LEVEL
Fri, May 1 - Wed, May 6
LEVEL Logo
10:50 pm - 8:20 am
BOS
-
EAS
27h 30m
1 stop
LEVEL Logo
8:55 am - 9:05 pm
EAS
-
BOS
18h 10m
1 stop
$821LEVEL
Sat, May 2 - Sat, May 9
Iberia Logo
10:50 pm - 8:20 am
BOS
-
EAS
27h 30m
1 stop
Iberia Logo
8:55 am - 9:05 pm
EAS
-
BOS
18h 10m
1 stop
$827Iberia
Thu, May 7 - Sat, May 16
Iberia Logo
10:50 pm - 8:20 am
BOS
-
EAS
27h 30m
1 stop
Iberia Logo
9:30 pm - 7:50 pm
EAS
-
BOS
28h 20m
1 stop
$865Iberia
Mon, Apr 6 - Mon, Apr 13
Iberia Logo
10:50 pm - 8:20 am
BOS
-
EAS
27h 30m
1 stop
Iberia Logo
9:30 pm - 6:48 pm
EAS
-
BOS
27h 18m
2 stops
$875Iberia
Mon, Apr 6 - Mon, Apr 13
Multiple Airlines Logo
10:40 pm - 8:50 pm
BOS
-
EAS
16h 10m
2 stops
Multiple Airlines Logo
9:10 am - 9:05 pm
EAS
-
BOS
17h 55m
1 stop
$878Multiple Airlines
Sun, May 3 - Thu, May 7
Multiple Airlines Logo
10:45 pm - 8:20 am
BOS
-
EAS
27h 35m
2 stops
Multiple Airlines Logo
9:10 am - 9:05 pm
EAS
-
BOS
17h 55m
1 stop
$893Multiple Airlines
Sat, May 2 - Thu, May 7
Multiple Airlines Logo
10:30 pm - 8:20 am
BOS
-
EAS
27h 50m
3 stops
Multiple Airlines Logo
5:55 pm - 2:45 pm
EAS
-
BOS
50h 50m
2 stops
$896Multiple Airlines
Mon, Apr 6 - Mon, Apr 13
Iberia Logo
9:20 pm - 1:00 pm
BOS
-
EAS
9h 40m
1 stop
Iberia Logo
1:40 pm - 11:52 pm
EAS
-
BOS
16h 12m
2 stops
$903Iberia
Fri, May 1 - Wed, May 6
Multiple Airlines Logo
10:50 pm - 5:20 pm
BOS
-
EAS
12h 30m
1 stop
Multiple Airlines Logo
8:55 am - 9:05 pm
EAS
-
BOS
18h 10m
1 stop
$917Multiple Airlines
Sat, May 2 - Fri, May 8

LEVEL flights from Massachusetts to San Sebastian

Our best LEVEL deals on Massachusetts to San Sebastian flight tickets
LEVEL
May 1
BOS10:50 pmBoston Logan Intl
27h 30m
1 stop
EAS8:20 amSan Sebastián
May 6
EAS8:55 amSan Sebastián
18h 10m
1 stop
BOS9:05 pmBoston Logan Intl
$808
LEVEL
May 2
BOS10:50 pmBoston Logan Intl
27h 30m
1 stop
EAS8:20 amSan Sebastián
May 9
EAS8:55 amSan Sebastián
18h 10m
1 stop
BOS9:05 pmBoston Logan Intl
$821

British Airways flights from Massachusetts to San Sebastian

Our best British Airways deals on Massachusetts to San Sebastian flight tickets
British Airways
May 3
BOS9:55 pmBoston Logan Intl
12h 30m
1 stop
EAS4:25 pmSan Sebastián
May 8
EAS1:15 pmSan Sebastián
12h 50m
1 stop
BOS8:05 pmBoston Logan Intl
$945
British Airways
May 2
BOS9:50 pmBoston Logan Intl
12h 20m
1 stop
EAS4:10 pmSan Sebastián
May 7
EAS1:25 pmSan Sebastián
12h 40m
1 stop
BOS8:05 pmBoston Logan Intl
$995

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 March 21, 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

Fri 5/1

10:50 pm-8:20 am

1 stop27h 30m

San Sebastián

Wed 5/6

8:55 am-9:05 pm

1 stop18h 10m

$808

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sat 5/2

10:50 pm-8:20 am

1 stop27h 30m

San Sebastián

Sat 5/9

8:55 am-9:05 pm

1 stop18h 10m

$821

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Thu 5/7

10:50 pm-8:20 am

1 stop27h 30m

San Sebastián

Sat 5/16

8:55 am-9:05 pm

1 stop18h 10m

$827

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 4/6

10:50 pm-8:20 am

1 stop27h 30m

San Sebastián

Mon 4/13

9:30 pm-7:50 pm

1 stop28h 20m

$865

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 4/6

10:50 pm-8:20 am

1 stop27h 30m

San Sebastián

Mon 4/13

9:30 pm-6:48 pm

2 stops27h 18m

$875

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 5/3

10:40 pm-8:50 pm

2 stops16h 10m

San Sebastián

Thu 5/7

9:10 am-9:05 pm

1 stop17h 55m

$878

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sat 5/2

10:45 pm-8:20 am

2 stops27h 35m

San Sebastián

Thu 5/7

9:10 am-9:05 pm

1 stop17h 55m

$893

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 4/6

10:30 pm-8:20 am

3 stops27h 50m

San Sebastián

Mon 4/13

5:55 pm-2:45 pm

2 stops50h 50m

$896
Quickest round-trip

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Fri 5/1

9:20 pm-1:00 pm

1 stop9h 40m

San Sebastián

Wed 5/6

1:40 pm-11:52 pm

2 stops16h 12m

$903

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sat 5/2

10:50 pm-5:20 pm

1 stop12h 30m

San Sebastián

Fri 5/8

8:55 am-9:05 pm

1 stop18h 10m

$917

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

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 30m

Direct flights

None
The fastest flight from Massachusetts to San Sebastian takes 12h 30m
There are no direct flights from Massachusetts to San Sebastian. There are no popular flight routes from Massachusetts to San Sebastian.
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
American AirlinesPriceFrom $450Free CancellationRating
7.1
11,487 reviews
Search American Airlines flights
IberiaPriceFrom $487Free CancellationRating
7.0
3,146 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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