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$92+ Cheap flights from San Juan to Boston (BOS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BOS
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan to Boston Logan Intl are usually found in February or March, booked 42 days in advance, depart on a Friday or Tuesday and return on a Monday

Cheap flight deals from San Juan to Boston

Cheapest flights from San Juan to Boston
Explore the most affordable flight options available from San Juan to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 8, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/263:30 pm
SJU
-
BOS
Nonstop4h 26m
Spirit Airlines
Sun 3/18:01 pm
BOS
-
SJU
Nonstop4h 07m
Spirit Airlines
Deal found 2/8$122
This Frontier deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/276:00 am
SJU
-
BOS
Nonstop4h 19m
Frontier
Mon 3/210:04 am
BOS
-
SJU
Nonstop3h 56m
Frontier
Deal found 2/5$123
This CheapOair deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:00 am
SJU
-
BOS
Nonstop4h 19m
Multiple Airlines
Sun 3/18:01 pm
BOS
-
SJU
Nonstop4h 07m
Multiple Airlines
Deal found 2/5$124
This eDestinos deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/1311:22 am
SJU
-
BOS
Nonstop4h 21m
Spirit Airlines
Sun 2/225:27 am
BOS
-
SJU
1 stop9h 04m
Spirit Airlines
Deal found 2/7$125
This eDestinos deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1211:22 am
SJU
-
BOS
Nonstop4h 21m
Multiple Airlines
Thu 2/1910:04 am
BOS
-
SJU
Nonstop3h 56m
Multiple Airlines
Deal found 2/5$127
This Priceline deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/286:00 am
SJU
-
BOS
Nonstop4h 19m
Multiple Airlines
Sat 3/78:01 pm
BOS
-
SJU
Nonstop4h 07m
Multiple Airlines
Deal found 2/5$129
This Flightnetwork deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1711:22 am
SJU
-
BOS
Nonstop4h 21m
Spirit Airlines
Sun 2/223:00 pm
BOS
-
SJU
Nonstop4h 06m
Spirit Airlines
Deal found 2/5$130
This Cheapflightsfares deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2511:22 am
SJU
-
BOS
Nonstop4h 21m
Spirit Airlines
Sun 3/18:01 pm
BOS
-
SJU
Nonstop4h 07m
Spirit Airlines
Deal found 2/5$131
This Cheapflightsfares deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2611:22 am
SJU
-
BOS
Nonstop4h 21m
Spirit Airlines
Tue 3/33:00 pm
BOS
-
SJU
Nonstop4h 06m
Spirit Airlines
Deal found 2/7$132
This eDestinos deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1911:22 am
SJU
-
BOS
Nonstop4h 21m
Spirit Airlines
Sun 2/223:00 pm
BOS
-
SJU
Nonstop4h 06m
Spirit Airlines
Deal found 2/7$133

Find flight deals from San Juan to Boston

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 8, 2026.

Round-trip from

$122
(Cheapflightsfares)

One-way from

$92
(CheapOair)

Popular in

July

Cheapest in

February

Average price

$205
From San Juan to Boston Logan Intl
Search Deals
One-way flight from San Juan to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from San Juan 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, Cheapflights users made 2,558,603 searches. Data last updated February 8, 2026.
Use the filters below to find and compare flights from San Juan to Boston that are best for you.

Fly from

San Juan

Fly to

Boston

Route

Depart

Return

Price

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 2/26

3:30 pm-6:56 pm

Nonstop4h 26m

Boston Logan Intl

Sun 3/1

8:01 pm-1:08 am

Nonstop4h 07m

$122

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Wed 2/25

11:22 am-2:43 pm

Nonstop4h 21m

Boston Logan Intl

Sun 3/1

8:01 pm-1:08 am

Nonstop4h 07m

$138

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 2/26

6:00 am-9:19 am

Nonstop4h 19m

Boston Logan Intl

Sun 3/1

12:30 pm-2:53 am

1 stop13h 23m

$146

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Sat 2/28

11:22 am-2:43 pm

Nonstop4h 21m

Boston Logan Intl

Sat 3/7

8:01 pm-1:08 am

Nonstop4h 07m

$151

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 3/5

6:00 am-9:19 am

Nonstop4h 19m

Boston Logan Intl

Wed 3/18

6:01 am-11:58 pm

1 stop17h 57m

$167

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Fri 2/27

4:16 pm-1:13 am

1 stop9h 57m

Boston Logan Intl

Sun 3/1

8:01 pm-1:08 am

Nonstop4h 07m

$171

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 2/26

11:52 am-11:59 pm

1 stop13h 07m

Boston Logan Intl

Sun 3/1

12:30 pm-2:53 am

1 stop13h 23m

$176

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 3/5

11:52 am-11:59 pm

1 stop13h 07m

Boston Logan Intl

Sun 3/8

8:01 pm-12:08 am

Nonstop4h 07m

$179

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 3/19

10:00 am-2:18 pm

Nonstop4h 18m

Boston Logan Intl

Tue 3/24

3:23 pm-7:19 pm

Nonstop3h 56m

$188

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Wed 2/18

11:22 am-2:43 pm

Nonstop4h 21m

Boston Logan Intl

Sun 2/22

3:00 pm-8:06 pm

Nonstop4h 06m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 21 results
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2
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Best time to book a flight from San Juan to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from San Juan with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Juan to Boston

How far ahead should I book a flight from San Juan to Boston?

Use this chart to determine the optimal time to book a round-trip flight from San Juan to Boston. Price data was last updated on February 6, 2026.

The price you pay for your flight from San Juan to Boston may vary depending on when you book. For the best chance of a lower fare, look to book 42 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Juan to Boston?

Currently, April is the cheapest month in which you can book a flight from San Juan to Boston (average of $63). Flying from San Juan to Boston in November is currently the most expensive (average of $141). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SJU to BOS?

Find hourly flight availability from San Juan to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 8, 2026.

When flying from San Juan to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 15% versus a flight in the morning.

What is the cheapest day to fly from San Juan to Boston?

Use this chart to determine the cheapest time to fly round-trip from San Juan to Boston. Price data was last updated on January 31, 2026.

Travelers seeking maximum savings on their San Juan to Boston flight should consider departing on Saturday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How often are flights from San Juan to Boston delayed?

About 18% of weekly flights between San Juan and Boston have experienced delays in the past year, with the average delay time being 162 minutes.

What is the most punctual flight time for San Juan to Boston flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on San Juan to Boston flights?

Over the last year, Delta have had the lowest number of delays on this route, with just 11% of flights being delayed.

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated February 8, 2026.
See what other customers who have flown with Delta, JetBlue, and Spirit Airlines from San Juan to Boston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,174 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,174 reviews
Delta
7.9
Good
8,174 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
JetBlue
7.2
Good
2,895 reviews
Delta
7.9
Good
8,174 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Spirit Airlines
6.3
Okay
8,430 reviews
Delta
7.9
Good
8,174 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.7
Fair
3,051 reviews
Delta
7.9
Good
8,174 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from San Juan to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Boston from San Juan?

    For a flight from San Juan to Boston, you will be flying into Logan Intl. Boston Logan Intl (BOS) is just 2.6 mi from the center of the city. Logan Intl is the only Boston airport and it handles 13 inbound flights from San Juan per day. 4 airlines have flights to Boston Logan Intl from San Juan on a regular basis.

  • How long is the flight from San Juan to Boston?

    There are many flights that can get you from San Juan to Boston in 4h 19m. Fly via Spirit Airlines or Frontier to get the fastest option. The distance between San Juan and Boston is about 1678 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from San Juan to Boston round-trip?

    Our cheapest airline available from San Juan to Boston is Spirit Airlines. Our recent data shows that you can find tickets from as low as $73 on this airline. Additional options worth looking into are Frontier and Delta, starting at $86 and $113 round-trip. Spirit Airlines is 72% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from San Juan to Boston one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $69. However, be on the lookout for offers from Frontier and American Airlines, as they are both options that can get you from San Juan to Boston for a low price.

  • What are the most reliable airlines from San Juan to Boston?

    The top 3 most reliable airlines when flying from San Juan to Boston are Japan Airlines (75%), EL AL (72%) and Icelandair (67%).

  • What are the cheapest flights from San Juan to Boston?

    The cheapest flight price from San Juan to Boston is $99. On average you can expect to pay $255. The most popular route, (San Juan Luis Munoz Marin Intl - Boston Logan Intl), can usually be booked for $92.

  • Can I find deals for flights from San Juan to Boston that include hotel bookings?

    Yes. In addition to deals on San Juan to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Juan to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Juan to Boston.

  • Can I find deals for business class flights from San Juan to Boston?

    Yes. Cheapflights offers flight deals from San Juan to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Juan to Boston?

    Currently, April is the cheapest month in which you can book a flight from San Juan to Boston (average of $63). Flying from San Juan to Boston in November is currently the most expensive (average of $141). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boston?

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Top 4 airlines flying from San Juan to Boston

Discover the top 4 airlines that operate flights from San Juan to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$73Average$198FlexibilityNo cancel feeOn-time65%
FrontierCheapest$86Average$201FlexibilityNo cancel feeOn-time62%
DeltaCheapest$113Average$274FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$136Average$306FlexibilityNo cancel feeOn-time62%

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