Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Boston to San Juan
The cheapest flights right now
Boston – San Juan
Outbound – Nov 9, 2026
1 stop
6h 13m JFK
Return – Nov 18, 2026
direct
4h 13m $360
2 days ago
Boston – San Juan
Outbound – Nov 10, 2026
direct
4h 5m Return – Nov 18, 2026
direct
4h 13m $388
2 days ago
Boston – San Juan
Outbound – Nov 9, 2026
direct
4h 8m Return – Nov 18, 2026
direct
4h 13m $428
2 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$251
Average price of a round trip
$335
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
4h9
A flight from Boston to San Juan takes on average 4h9.
Best time
January
According to user searches, the ideal month to go to San Juan is January.
Tips for finding a cheap flight from Boston to San Juan
Check out our tips for booking your flight to San Juan (Puerto Rico) from Boston (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is November, with an average flight ticket price of $183 (calculation over the last two years). The most touristic season corresponds to the months of November, June and December.
For the cheapest flights, it is advisable to buy your ticket at least 30 days before the departure date.
The airline offering the cheapest flight tickets is Allegiant Air. A ticket from the airline Allegiant Air to San Juan costs on average $297.
The airlines that offer the most flights are JetBlue and JetBlue.
Price of flight tickets from Boston to San Juan
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $251 to $489
- The average price of a flight ticket is about $335
- Prices are lowest for stays in the month of November
- The month in which booking a ticket is cheaper is: October
info departure city :
Boston, USA
airport :
Boston-Logan International Airport (BOS)
local time :
Boston is a city in the country USA, the time zone is [[timezone]]. In Boston, it is currently {fromLocalTime}, the temperature is on average 10°C, with a minimum of 7°C and a maximum of 14°C.
The city of Boston has 1 airport(s): Boston-Logan
destination info :
San Juan, Puerto Rico
airports :
Luis Muñoz Marín International Airport (SJU)
Fernando Luis Ribas Dominicci Airport (SIG)
local time :
San Juan is in the country Puerto Rico, the time zone is [[timezone]]. In San Juan, it is currently {toLocalTime}, the temperature is on average 27°C, with a minimum of 26°C and a maximum of 30°C.
The city of San Juan has 2 airport(s): Luis Muñoz Marín and Fernando Luis Ribas Dominicci
Useful info about San Juan
What is the least touristic period to go to San Juan?
If you want to visit San Juan during the least touristic period, choose the month of January.
What is the most popular time to travel to San Juan?
In San Juan, the most popular month is November. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Boston to San Juan?
According to our data, it is recommended to book your flight 30 days before your departure. If you book your flight ticket 5 weeks before your departure, you may find a price below average. You can also choose morning flights that are 100% cheaper than afternoon and evening flights. The cheapest day to book a flight from Boston to San Juan is Saturday.
What are the arrival and destination airports when traveling between Boston and San Juan?
When you leave, you can leave from Boston-Logan, and you will arrive at Luis Muñoz Marín.
How to reach Boston airport from the city centre?
This information is not available at this time.
Are there other means of transportation to go from Boston to San Juan?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Boston and San Juan?
In summer, the average temperature is 28°C in San Juan and 22°C in Boston. The average rainfall in summer is 79 mm in San Juan and 106 mm in Boston. In summer, it is warmer in San Juan and it rains less in San Juan. In winter, it is colder in San Juan and it rains more in Boston.
