Cheap flights from San Sebastian to Boston from $436

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Sebastian to Boston departing on 5/20. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
1:40 pm - 7:50 pm
EAS
-
BOS
12h 10m
1 stop
American Airlines Logo
11:34 am - 8:40 am
BOS
-
EAS
15h 06m
2 stops
$783American Airlines
Sun, Apr 12 - Sun, Apr 19
Iberia Logo
5:55 pm - 9:05 pm
EAS
-
BOS
33h 10m
1 stop
Iberia Logo
8:10 pm - 8:20 am
BOS
-
EAS
30h 10m
2 stops
$788Iberia
Wed, May 13 - Sun, May 17
Iberia Logo
5:55 pm - 9:05 pm
EAS
-
BOS
33h 10m
1 stop
Iberia Logo
8:10 pm - 8:20 am
BOS
-
EAS
30h 10m
2 stops
$789Iberia
Wed, May 13 - Sun, May 17
Iberia Logo
5:55 pm - 9:05 pm
EAS
-
BOS
33h 10m
1 stop
Iberia Logo
8:10 pm - 8:20 am
BOS
-
EAS
30h 10m
2 stops
$790Iberia
Wed, May 13 - Sun, May 17
Iberia Logo
1:40 pm - 11:52 pm
EAS
-
BOS
16h 12m
2 stops
Iberia Logo
8:10 pm - 8:20 am
BOS
-
EAS
30h 10m
2 stops
$848Iberia
Wed, May 13 - Sun, May 17
Iberia Logo
9:30 pm - 11:52 pm
EAS
-
BOS
32h 22m
2 stops
Iberia Logo
8:10 pm - 8:20 am
BOS
-
EAS
30h 10m
2 stops
$861Iberia
Wed, May 13 - Sun, May 17
Multiple Airlines Logo
5:55 pm - 9:05 pm
EAS
-
BOS
33h 10m
1 stop
Multiple Airlines Logo
9:20 pm - 8:40 am
BOS
-
EAS
29h 20m
1 stop
$924Multiple Airlines
Sun, Apr 12 - Sun, Apr 19
Iberia Logo
1:40 pm - 11:52 pm
EAS
-
BOS
16h 12m
2 stops
Iberia Logo
11:34 am - 8:40 am
BOS
-
EAS
15h 06m
2 stops
$1,071Iberia
Sun, Apr 12 - Sun, Apr 19
Iberia Logo
8:55 am - 11:52 pm
EAS
-
BOS
20h 57m
2 stops
Iberia Logo
8:10 pm - 8:20 am
BOS
-
EAS
30h 10m
2 stops
$1,092Iberia
Wed, May 13 - Sun, May 17
American Airlines Logo
9:20 am - 10:20 am
EAS
-
BOS
31h 00m
2 stops
American Airlines Logo
6:00 am - 8:40 am
BOS
-
EAS
20h 40m
2 stops
$1,137American Airlines
Wed, May 13 - Sun, May 17

American Airlines flights from San Sebastian to Boston

Our best American Airlines deals on San Sebastian to Boston flight tickets
American Airlines
Apr 12
EAS1:40 pmSan Sebastián
12h 10m
1 stop
BOS7:50 pmBoston Logan Intl
Apr 19
BOS11:34 amBoston Logan Intl
15h 06m
2 stops
EAS8:40 amSan Sebastián
$783
American Airlines
May 13
EAS9:20 amSan Sebastián
31h 00m
2 stops
BOS10:20 amBoston Logan Intl
May 17
BOS6:00 amBoston Logan Intl
20h 40m
2 stops
EAS8:40 amSan Sebastián
$1,137
American Airlines
May 13
EAS1:40 pmSan Sebastián
12h 10m
1 stop
BOS7:50 pmBoston Logan Intl
May 17
BOS9:20 pmBoston Logan Intl
29h 20m
1 stop
EAS8:40 amSan Sebastián
$1,352

Iberia flights from San Sebastian to Boston

Our best Iberia deals on San Sebastian to Boston flight tickets
Iberia
May 13
EAS5:55 pmSan Sebastián
33h 10m
1 stop
BOS9:05 pmBoston Logan Intl
May 17
BOS8:10 pmBoston Logan Intl
30h 10m
2 stops
EAS8:20 amSan Sebastián
$788
Iberia
May 13
EAS5:55 pmSan Sebastián
33h 10m
1 stop
BOS9:05 pmBoston Logan Intl
May 17
BOS8:10 pmBoston Logan Intl
30h 10m
2 stops
EAS8:20 amSan Sebastián
$789
Iberia
May 13
EAS5:55 pmSan Sebastián
33h 10m
1 stop
BOS9:05 pmBoston Logan Intl
May 17
BOS8:10 pmBoston Logan Intl
30h 10m
2 stops
EAS8:20 amSan Sebastián
$790

momondo Fare Finder

 
Customize your flight search to find flights from San Sebastian to Boston 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 1, 2026.
Use the filters below to find and compare flights from San Sebastian to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Sun 4/12

1:40 pm-7:50 pm

1 stop12h 10m

Boston Logan Intl

Sun 4/19

11:34 am-8:40 am

2 stops15h 06m

$783

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 5/13

5:55 pm-9:05 pm

1 stop33h 10m

Boston Logan Intl

Sun 5/17

8:10 pm-8:20 am

2 stops30h 10m

$788

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 5/13

5:55 pm-9:05 pm

1 stop33h 10m

Boston Logan Intl

Sun 5/17

8:10 pm-8:20 am

2 stops30h 10m

$789

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 5/13

5:55 pm-9:05 pm

1 stop33h 10m

Boston Logan Intl

Sun 5/17

8:10 pm-8:20 am

2 stops30h 10m

$790

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 5/13

1:40 pm-11:52 pm

2 stops16h 12m

Boston Logan Intl

Sun 5/17

8:10 pm-8:20 am

2 stops30h 10m

$848

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 5/13

9:30 pm-11:52 pm

2 stops32h 22m

Boston Logan Intl

Sun 5/17

8:10 pm-8:20 am

2 stops30h 10m

$861

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Sun 4/12

5:55 pm-9:05 pm

1 stop33h 10m

Boston Logan Intl

Sun 4/19

9:20 pm-8:40 am

1 stop29h 20m

$924

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Sun 4/12

1:40 pm-11:52 pm

2 stops16h 12m

Boston Logan Intl

Sun 4/19

11:34 am-8:40 am

2 stops15h 06m

$1,071

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 5/13

8:55 am-11:52 pm

2 stops20h 57m

Boston Logan Intl

Sun 5/17

8:10 pm-8:20 am

2 stops30h 10m

$1,092

San SebastianBoston

EAS - BOS

EASBOS

San Sebastián

Wed 5/13

9:20 am-10:20 am

2 stops31h 00m

Boston Logan Intl

Sun 5/17

6:00 am-8:40 am

2 stops20h 40m

$1,137

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Boston from

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

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 airline that flies from San Sebastián to Boston Logan Intl?

LEVEL, Iberia, and American Airlines are the most popular carriers operating from San Sebastián to Boston Logan Intl

When to book flights from San Sebastian to Boston

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

Cheap San Sebastian to Boston (EAS to BOS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Sebastian to Boston

Fastest flight time

12h 50m

Direct flights

None
The fastest flight from San Sebastian to Boston takes 12h 50m
There are no direct flights from San Sebastian to Boston. There are no popular flight routes from San Sebastian to Boston.
  • How far is San Sebastián to Boston Logan Intl by plane?

    There are 3393.2 mi between San Sebastián and Boston Logan Intl. A reasonable flight in good conditions will take 12h 50m.

  • When did momondo last update prices for flights from San Sebastián Airport to Boston Logan Intl Airport?

    Prices for flights from San Sebastián Airport to Boston Logan Intl Airport were last updated today.

  • How old do you have to be to fly from San Sebastián Airport to Boston Logan Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Sebastián Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The travel and health documents required for your trip to Boston Logan Intl 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 Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Kennebunkport
Plymouth
Cambridge
South Yarmouth
Narragansett
Gloucester
Falmouth
Brockton
Laconia
Warwick
Nashua
Chatham
Sturbridge
Everett

Why use momondo?

Why should I use momondo to find a flight deal from San Sebastian to Boston?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Sebastian to Boston. momondo saves you time and could save you money on your trip.

Can I find flights from San Sebastian to Boston with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for San Sebastian to Boston flights to just show those with flexible booking policies.

How can momondo help me find flights from San Sebastian to Boston?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Boston from San Sebastian.

I’m not ready to book a flight from San Sebastian to Boston right now. Can momondo alert me if prices change?

Price alerts on flights to Boston from San Sebastian are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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1 adult
Tue 3/31
Tue 4/7

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