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San Juan

$88+ Cheap flights from Boston (BOS) to San Juan

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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SJU
Apr 21 — Apr 281
Mon 4/21
Mon 4/28
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to San Juan are usually found in September or August, booked 11 days in advance, depart on a Tuesday or Monday and return on a Friday

Cheap flight deals from Boston to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Juan (PR1). 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 April 16, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$124
(Cheapflightsfares)

One-way from

$88
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$298
Provider with most accurate pricing for Boston Logan Intl-San Juan flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-San Juan flights.
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From Boston Logan Intl to San Juan
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One-way flight from Boston Logan Intl to San Juan
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Highest demand for flights based on searches. 12% potential increase in price ($35 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Boston to San Juan

Cheapest flights from Boston to San Juan
Explore the most affordable flight options available from Boston to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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.
Sun 6/222:42 pmBOS - SJU
Nonstop3h 54mSpirit Airlines
Sun 6/299:30 amSJU - BOS
Nonstop4h 07mSpirit Airlines
Deal found 4/15$124
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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.
Mon 5/57:52 pmBOS - SJU
Nonstop4h 00mMultiple Airlines
Thu 5/86:30 amSJU - BOS
Nonstop4h 13mMultiple Airlines
Deal found 4/14$165
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 5/1511:43 amBOS - SJU
Nonstop4h 01mFrontier
Sun 5/186:30 amSJU - BOS
Nonstop4h 13mFrontier
Deal found 4/16$193
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/48:25 amBOS - SJU
Nonstop4h 00mDelta
Fri 5/91:39 pmSJU - BOS
Nonstop4h 18mDelta
Deal found 4/14$254
This United Airlines deal was found by Cheapflights users on 4/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/612:30 pmBOS - SJU
2 stops11h 27mUnited Airlines
Fri 5/91:05 amSJU - BOS
2 stops12h 58mUnited Airlines
Deal found 4/15$263
This JetBlue deal was found by Cheapflights users on 4/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/178:55 pmBOS - SJU
Nonstop4h 00mJetBlue
Sat 6/78:50 amSJU - BOS
Nonstop4h 05mJetBlue
Deal found 4/15$274

Cheapflights Fare Finder

Customize your flight search to find flights from Boston to San Juan 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 April 16, 2025.
Use the filters below to find and compare flights from Boston to San Juan that are best for you.

Fly from

Boston

Fly to

San Juan

Route

Depart

Return

Price

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Sun 6/22

2:42 pm-6:36 pm

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Sun 6/29

9:30 am-1:37 pm

Nonstop4h 07m

$124

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Mon 5/5

7:52 pm-11:52 pm

Nonstop4h 00m

San Juan Luis Munoz Marin Intl

Thu 5/8

6:30 am-10:43 am

Nonstop4h 13m

$165

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Thu 5/15

11:43 am-3:44 pm

Nonstop4h 01m

San Juan Luis Munoz Marin Intl

Sun 5/18

6:30 am-10:43 am

Nonstop4h 13m

$193

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Sun 5/4

8:25 am-12:25 pm

Nonstop4h 00m

San Juan Luis Munoz Marin Intl

Fri 5/9

1:39 pm-5:57 pm

Nonstop4h 18m

$254

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Sat 5/10

1:59 pm-6:05 pm

Nonstop4h 06m

San Juan Luis Munoz Marin Intl

Tue 5/13

6:00 am-10:08 am

Nonstop4h 08m

$259

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Tue 5/6

12:30 pm-11:54 pm

2 stops11h 24m

San Juan Luis Munoz Marin Intl

Thu 5/8

1:05 am-8:52 am

1 stop7h 47m

$263

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Wed 4/30

6:30 pm-10:34 pm

Nonstop4h 04m

$88

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Thu 5/15

11:43 am-3:44 pm

Nonstop4h 01m

$96

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Wed 5/14

8:20 am-12:21 pm

Nonstop4h 01m

$137

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Wed 4/30

5:15 am-2:45 pm

1 stop9h 30m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 13 results
1
2
  • Most accurate provider: When it comes to deals on Boston-San Juan flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Boston-San Juan flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Boston-San Juan flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-San Juan flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-San Juan flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Boston 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 Boston to San Juan

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to San Juan. Price data was last updated on April 11, 2025.

The best time to book flights from Boston to San Juan is 11 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, September is the cheapest month in which you can book a flight from Boston to San Juan (average of $254). Flying from Boston to San Juan in December is currently the most expensive (average of $336). 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 BOS to SJU?

Find hourly flight availability from Boston to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 16, 2025.

A simple way to save on the total cost of your ticket is to fly from Boston to San Juan in the afternoon. If you’re flexible enough to do this you can expect to save up to 7% on your trip compared to booking a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Boston to San Juan. Price data was last updated on December 16, 2024.

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

Weekly flight availability from Boston to San Juan

Explore weekly flight availability from Boston to San Juan. 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 April 16, 2025.

The most flights from BOS to PR1 are scheduled on a Wednesday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated April 16, 2025.
Read reviews from past customers who have flown Southwest, Delta and United Airlines from Boston to San Juan. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,282 reviews

Food

7.1

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,282 reviews
Southwest
8.0
Very good
4,282 reviews

Food

7.1

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,916 reviews
Southwest
8.0
Very good
4,282 reviews

Food

7.1

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,665 reviews
Southwest
8.0
Very good
4,282 reviews

Food

7.1

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
JetBlue
7.3
Good
2,926 reviews
Southwest
8.0
Very good
4,282 reviews

Food

7.1

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,282 reviews

Food

7.1

Overall

8.0

Crew

8.6

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Boston to San Juan. 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 from for flights from Boston to San Juan?

    If you book a flight to San Juan from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 14 flights from Logan Intl to San Juan per day from 7 different airlines.

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

    According to our current data, Spirit Airlines ($124), Frontier ($193), and Delta ($254) offers the cheapest pricing from Boston to San Juan. You may be able to fly from Boston to San Juan for 52% less than the average price by searching for these airlines.

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

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $88. However, be on the lookout for offers from Frontier and Delta, as they are both options that can get you from Boston to San Juan for a low price.

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

    The top 3 most reliable airlines when flying from Boston to San Juan are TAP AIR PORTUGAL (77%), Japan Airlines (71%) and Delta (69%).

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

    The cheapest flight price from Boston to San Juan is $88. On average you can expect to pay $555. The most popular route, (Boston Logan Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $157.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to San Juan 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 Boston to San Juan?

    Currently, September is the cheapest month in which you can book a flight from Boston to San Juan (average of $254). Flying from Boston to San Juan in December is currently the most expensive (average of $336). 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

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Top 7 airlines flying from Boston to San Juan

Discover the top 7 airlines that operate flights from Boston to San Juan. 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 April 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$76Average$174FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$85Average$230FlexibilityNo cancel feeOn-time65%
DeltaCheapest$141Average$321FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$142Average$495FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$204Average$526FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$282Average$530FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$427Average$677FlexibilityNo cancel feeOn-time63%

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