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$115+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BOS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan to Boston Logan Intl are usually found in January or February, booked 43 days in advance, depart on a Friday or Saturday and return on a Monday

Cheap 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 September 15, 2025.

Round-trip from

$171
(Cheapflightsfares)

One-way from

$115
(Trip.com)

Popular in

July

Cheapest in

January

Average price

$224
From San Juan to Boston Logan Intl
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One-way flight from San Juan to Boston Logan Intl
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Highest demand for flights based on searches. 21% potential increase in price ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 15, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 10/16:44 amSJU - BOS
1 stop7h 04mSpirit Airlines
Tue 10/72:15 pmBOS - SJU
1 stop11h 29mSpirit Airlines
Deal found 9/14$171
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 10/211:59 amSJU - BOS
1 stop11h 58mSpirit Airlines
Tue 10/72:15 pmBOS - SJU
1 stop11h 29mSpirit Airlines
Deal found 9/13$189
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2111:56 amSJU - BOS
1 stop8h 57mAmerican Airlines
Wed 10/226:00 amBOS - SJU
2 stops9h 54mAmerican Airlines
Deal found 9/13$205
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/112:28 amSJU - BOS
1 stop8h 15mMultiple Airlines
Tue 10/72:15 pmBOS - SJU
1 stop11h 29mMultiple Airlines
Deal found 9/13$209
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/33:55 pmSJU - BOS
1 stop9h 04mAmerican Airlines
Sat 10/410:10 amBOS - SJU
2 stops13h 27mAmerican Airlines
Deal found 9/14$210
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 9/2511:59 amSJU - BOS
1 stop11h 58mSpirit Airlines
Tue 10/72:15 pmBOS - SJU
1 stop11h 29mSpirit Airlines
Deal found 9/15$213
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 10/3011:51 amSJU - BOS
1 stop12h 08mSpirit Airlines
Mon 11/32:15 pmBOS - SJU
1 stop11h 29mSpirit Airlines
Deal found 9/13$214
This Spirit deal was found by Cheapflights users on 9/13. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/242:49 amSJU - BOS
1 stop10h 31mSpirit Airlines
Sat 11/12:15 pmBOS - SJU
1 stop10h 39mSpirit Airlines
Deal found 9/13$217
This Flightnetwork deal was found by Cheapflights users on 9/13. 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.
Mon 10/272:49 amSJU - BOS
1 stop10h 31mSpirit Airlines
Wed 10/292:15 pmBOS - SJU
1 stop11h 29mSpirit Airlines
Deal found 9/13$218
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2712:28 amSJU - BOS
1 stop8h 15mMultiple Airlines
Thu 10/26:49 pmBOS - SJU
1 stop16h 15mMultiple Airlines
Deal found 9/13$228
This Expedia deal was found by Cheapflights users on 9/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2911:59 amSJU - BOS
1 stop11h 58mSpirit Airlines
Thu 10/26:49 pmBOS - SJU
1 stop16h 15mSpirit Airlines
Deal found 9/15$230
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/212:49 amSJU - BOS
1 stop10h 31mSpirit Airlines
Tue 10/282:15 pmBOS - SJU
1 stop11h 29mSpirit Airlines
Deal found 9/13$231

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 September 15, 2025.
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

Fri 10/17

4:31 pm-11:59 pm

1 stop7h 28m

Boston Logan Intl

Tue 10/21

12:00 pm-4:05 pm

Nonstop4h 05m

$274

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Wed 10/29

4:05 am-12:11 pm

1 stop8h 06m

Boston Logan Intl

Sun 11/2

7:40 am-12:44 pm

Nonstop4h 04m

$274

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Fri 11/14

8:10 am-11:23 am

Nonstop4h 13m

Boston Logan Intl

Mon 11/17

6:20 am-6:13 pm

1 stop10h 53m

$274

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Wed 11/19

5:05 am-12:11 pm

1 stop8h 06m

Boston Logan Intl

Sun 11/23

10:55 pm-3:52 am

Nonstop3h 57m

$274

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Fri 10/17

4:31 pm-11:59 pm

1 stop7h 28m

Boston Logan Intl

Mon 10/20

8:00 am-12:27 pm

Nonstop4h 27m

$274

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Wed 10/15

1:32 pm-5:45 pm

Nonstop4h 13m

Boston Logan Intl

Fri 10/17

8:15 am-12:21 pm

Nonstop4h 06m

$282

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 10/16

1:32 pm-5:45 pm

Nonstop4h 13m

Boston Logan Intl

Tue 10/21

8:15 am-12:21 pm

Nonstop4h 06m

$282

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Fri 10/24

1:32 pm-5:45 pm

Nonstop4h 13m

Boston Logan Intl

Tue 10/28

8:15 am-12:21 pm

Nonstop4h 06m

$282

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 10/30

1:32 pm-5:45 pm

Nonstop4h 13m

Boston Logan Intl

Sun 11/2

8:15 am-1:21 pm

Nonstop4h 06m

$282

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Fri 10/24

1:32 pm-5:45 pm

Nonstop4h 13m

Boston Logan Intl

Wed 10/29

8:15 am-12:21 pm

Nonstop4h 06m

$282

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 22 results
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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 September 12, 2025.

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 43 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, January is the cheapest month in which you can book a flight from San Juan to Boston (average of $218). Flying from San Juan to Boston in July is currently the most expensive (average of $311). 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 September 15, 2025.

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 evening, which can drop the price by up to 15% versus a flight at noon.

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 December 16, 2024.

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. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Juan to Boston

Explore weekly flight availability from San Juan to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 15, 2025.

The most flights from PR1 to BOS are scheduled on a Monday (14 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

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 September 15, 2025.
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
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
JetBlue
7.2
Good
2,912 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Spirit Airlines
6.3
Okay
8,015 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Frontier
5.8
Fair
3,172 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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 9 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 7h 28m. Fly via JetBlue to get the fastest option. The distance between San Juan and Boston is about 1678 mi.

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

    Our cheapest airline available from San Juan to Boston is Frontier. Our recent data shows that you can find tickets from as low as $72 on this airline. Additional options worth looking into are Spirit Airlines and Delta, starting at $85 and $136 round-trip. Frontier is 69% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 KLM (91%), Delta (90%) and WestJet (87%).

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

    The cheapest flight price from San Juan to Boston is $128. On average you can expect to pay $672. The most popular route, (San Juan Luis Munoz Marin Intl - Boston Logan Intl), can usually be booked for $171.

  • 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, January is the cheapest month in which you can book a flight from San Juan to Boston (average of $218). Flying from San Juan to Boston in July is currently the most expensive (average of $311). 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?

Book flights to Boston if you plan to visit one of these locations
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$72Average$147FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$85Average$220FlexibilityNo cancel feeOn-time65%
DeltaCheapest$136Average$281FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$140Average$302FlexibilityNo cancel feeOn-time62%

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