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Cheap flights from Boston (BOS) to San Juan (SJU)

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The best prices from Boston to San Juan are usually found in August or May, booked 49 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

How to find the cheapest flight from
Boston (BOS) to San Juan (SJU)

BOS - PR1
Price
$153 - $517
PR1
Temperature
82.4 - 89.6 °F
PR1
Rainfall
1.3 - 5.8 inches

Popular in

December

High demand for flights, 51% potential price rise

Cheapest in

August

Best time to find cheap flights, 39% potential price drop

Round-trip from

$153

From Boston to San Juan

One-way from

$75

One-way flight from Boston to San Juan

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Boston to San Juan?

Friday flights are found to be more expensive to fly from Boston to San Juan. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Juan.

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

Travelers have found it’s best to book a flight 19 days in advance to save up to 7% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 19 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Boston to San Juan 1-2 weeks in advance for as low as $262, or $281 for flights within the next 24 hours.

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

Flights from Boston to San Juan lean towards being more expensive in December. Prices are generally better when you fly from Boston to San Juan in August, with the cheapest ticket starting at $121.

When is the cheapest time to fly from Boston to San Juan (BOS - PR1)?

When flying from Boston to San Juan, 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 23% versus a flight at noon.

Cheap flights from Boston to San Juan in January, February 2021

The best prices found for BOS to SJU flights for January, February
25 Jan - 31 Jan
$95pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
31 Jan - 6 Feb
$96pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
29 Jan - 6 Feb
$97pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl

Boston to San Juan 2021 flight deals

Cheap flights to San Juan from Boston found for this year
4 Mar - 10 Mar
$94pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
Non-Stop
BOS
Boston Logan Intl
25 Jan - 31 Jan
$95pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
31 Jan - 6 Feb
$96pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl

Non-stop flights to San Juan from Boston

Save time with Boston to San Juan direct flight deals
10 Mar - 14 Mar
$123pp
BOS
Boston Logan Intl
Spirit Airlines
Non-Stop
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
Non-Stop
BOS
Boston Logan Intl
10 Mar - 14 Mar
$128pp
BOS
Boston Logan Intl
Spirit Airlines
Non-Stop
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
Non-Stop
BOS
Boston Logan Intl
15 Mar - 22 Mar
$131pp
BOS
Boston Logan Intl
Multiple Airlines
Non-Stop
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
Non-Stop
BOS
Boston Logan Intl

Last minute flights from Boston to San Juan

Late deals on round-trip flights to San Juan from Boston, departing today and this week
31 Jan - 6 Feb
$96pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
29 Jan - 6 Feb
$97pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
27 Jan - 4 Feb
$106pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl

One-way flights to San Juan from Boston

The cheapest one-way flights from Boston to San Juan
1:30 am - 9:47 pm
Frontier
1 Stop
19h 17m
BOS - SJU
Frontier
$75
FareScan
4:52 am - 6:40 am
Multiple Airlines
1 Stop
24h 48m
BOS - SJU
Multiple Airlines
$77
Kiwi.com
5:10 am - 6:24 pm
Spirit Airlines
1 Stop
12h 14m
BOS - SJU
Spirit Airlines
$82
Travelocity

Related info for your journey

Useful info, stats and facts about Boston to San Juan flights.

Flight FAQs

From Boston to San Juan

Are flight prices decreasing from Boston to San Juan due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Boston and San Juan for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Boston Logan Intl to San Juan to control the spread of COVID-19?

New policies can now be found on Delta to help keep travelers safe while flying. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially distanced seating (for a limited time) will work towards keeping travelers safer while flying from Boston Logan Intl to San Juan. Policies will vary by airline.

Which airlines flying from Boston Logan Intl to San Juan have flexible cancellations due to COVID-19?

Some of our airline partners flying from Boston Logan Intl to San Juan have new flexible policies in place due to COVID-19. JetBlue, Spirit Airlines, and American Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like JetBlue with this kind of flexibility.

Can I find flights from Boston to San Juan for under $100 on Cheapflights?

Yes, there are multiple flights from Boston to San Juan for under $100. The cheapest flight booked recently is on Spirit Airlines for just $94, but on average you can expect to pay $110.

Are there nonstop flights from Boston to San Juan for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to San Juan under $200. A good price for a nonstop flight from Boston to San Juan is less than $140.

Are there last-minute flights available from Boston to San Juan for under $100?

There are currently 20+ open flights from Boston to San Juan within the next 7 days for less than $100.

Is Boston weather warmer or cooler than San Juan?

Our data indicates that the weather will be 90 °F on average in the month of June. The temperature in San Juan is typically hotter than in Boston. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

How long is the flight from Boston to San Juan?

Spirit Airlines and Frontier can get you from Boston to San Juan in just under 4h 17m. Your travel time will be generally consistent. All flights are typically nonstop.

What is the cheapest airline to fly from Boston to San Juan round-trip?

Cheapflights users have booked flights from Boston to San Juan round-trip from $94. You may be able to fly from Boston to San Juan for 62% less than the average price by searching for this airline.

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 $44. Check flights for Frontier, as they currently have the next best price.

Alternative routes for Boston to San Juan

Destination information for San Juan

Things to know before you go. Useful info for your trip from Boston to San Juan
Today's exchange rate
$1 = $1.00
Flight duration
4h 34m
Average temperature for January in San Juan
82.4 °F
Avg rainfall for January in San Juan
3.6 ″

Airports servicing Boston

Airports servicing San Juan

San Juan Isla Grande (SIG)

Top 6 airlines flying from Boston to San Juan

The chart below displays the airlines Cheapflights users traveling from Boston to San Juan choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$102 $158 No cancel fee 62%
Delta
$134 $289 No cancel fee N/A
United Airlines
$135 $350 No cancel fee 69%
Spirit Airlines
$124 $370 No cancel fee 65%
American Airlines
$133 $383 No cancel fee 71%
JetBlue
$217 $591 No cancel fee 62%

Hourly flight availability from Boston to San Juan

Afternoon Noon to 6 PM 66% of BOS to SJU departures
Morning 6 AM to noon 33% of BOS to SJU departures
Early morning Midnight to 6 AM 1% of BOS to SJU departures
Evening 6 PM to midnight 0% of BOS to SJU departures
Midnight
6 AM
Noon
6 PM
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