$94+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Boston to San Juan with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boston Logan Intl to San Juan are usually found in September or August, booked 27 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 May 8, 2025.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $151 (Cheapflightsfares) |
One-way from | $94 (CheapOair) |
Popular in | December |
Cheapest in | September |
Average price | $254 |
Find flight deals from Boston to San Juan
Cheapest flights from Boston to San JuanExplore 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 May 8, 2025.
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 May 8, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 5/7. 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.
This JetBlue deal was found by Cheapflights users on 5/7. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 5/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 5/6. 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.
This Cheapflightsfares deal was found by Cheapflights users on 5/7. 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.
This United Airlines deal was found by Cheapflights users on 5/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 May 8, 2025.
Use the filters below to find and compare flights from Boston to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Sun 6/15
2:42 pm-6:36 pm
Nonstop3h 54m
San Juan Luis Munoz Marin Intl
Thu 6/19
9:30 am-1:37 pm
Nonstop4h 07m
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Wed 5/28
7:20 pm-11:25 pm
Nonstop4h 05m
San Juan Luis Munoz Marin Intl
Wed 6/4
6:00 am-10:08 am
Nonstop4h 08m
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Fri 5/30
8:20 am-12:21 pm
Nonstop4h 01m
San Juan Luis Munoz Marin Intl
Sat 5/31
1:39 pm-5:57 pm
Nonstop4h 18m
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Sat 6/7
1:20 pm-10:55 pm
2 stops9h 35m
San Juan Luis Munoz Marin Intl
Wed 6/11
11:55 am-9:49 pm
2 stops9h 54m
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Sun 5/18
11:43 am-3:44 pm
Nonstop4h 01m
San Juan Luis Munoz Marin Intl
Tue 5/20
1:59 am-9:09 am
1 stop7h 10m
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Tue 5/27
9:00 am-11:54 pm
2 stops14h 54m
San Juan Luis Munoz Marin Intl
Wed 5/28
2:05 am-12:27 pm
1 stop10h 22m
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Wed 5/28
6:00 am-10:38 pm
1 stop16h 38m
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Wed 6/4
6:00 am-11:00 pm
1 stop17h 00m
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Sun 6/8
8:15 am-12:23 pm
Nonstop4h 08m
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Thu 5/15
11:43 am-3:44 pm
Nonstop4h 01m
- 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.
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 May 2, 2025.
The best time to book flights from Boston to San Juan is 27 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 May 8, 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 9% 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 May 8, 2025.
The most flights from BOS to PR1 are scheduled on a Thursday (17 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 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 May 8, 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.
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Gina,Apr 2025
LAS - DEN
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Gina,Apr 2025
LAS - DEN
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Gina,Apr 2025
LAS - DEN
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Gina,Apr 2025
LAS - DEN
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Gina,Apr 2025
LAS - DEN
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Gina,Apr 2025
LAS - DEN
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.
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Alternative routes for Boston to San Juan
See prices for flight routes from nearby airports that may be better suited for you.
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 May 8, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$76 | Average$174 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$85 | Average$237 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$142 | Average$320 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$146 | Average$505 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$204 | Average$554 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$282 | Average$521 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$427 | Average$677 | FlexibilityNo cancel fee | On-time63% |