Menu

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

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

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

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 41 days in advance to save up to 11% 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 41 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 $380, or $415 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 September, with the cheapest ticket starting at $194.

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 September, October 2020

The best prices found for BOS to SJU flights for September, October
23 Oct - 31 Oct
$99pp
BOS
Boston Logan Intl
Spirit Airlines
Non-Stop
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
18 Oct - 19 Oct
$102pp
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
16 Oct - 18 Oct
$105pp
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

Boston to San Juan 2020 flight deals

Cheap flights to San Juan from Boston found for this year
23 Oct - 31 Oct
$99pp
BOS
Boston Logan Intl
Spirit Airlines
Non-Stop
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
18 Oct - 19 Oct
$102pp
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
6 Nov - 8 Nov
$103pp
BOS
Boston Logan Intl
Spirit Airlines
     
3 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Spirit Airlines
Non-Stop
BOS
Boston Logan Intl

Non-stop flights to San Juan from Boston

Save time with Boston to San Juan direct flight deals
21 Jan - 26 Jan
$99pp
BOS
Boston Logan Intl
Multiple 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 Oct - 19 Oct
$102pp
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
21 Jan - 25 Jan
$105pp
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
9 Oct - 18 Oct
$105pp
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
8 Oct - 22 Oct
$107pp
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
7 Oct - 14 Oct
$108pp
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
8:39 am - 5:54 am
Multiple Airlines
1 Stop
21h 15m
BOS - SJU
Multiple Airlines
$93
SmartFares
11:00 am - 2:55 pm
JetBlue
Nonstop
3h 55m
BOS - SJU
JetBlue
7:12 am - 5:17 pm
Spirit Airlines
1 Stop
10h 05m
BOS - SJU
Spirit Airlines
$105
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.

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 Multiple Airlines for just $99, but on average you can expect to pay $114.

Are there nonstop flights from Boston to San Juan for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to San Juan under $100. A good price for a nonstop flight from Boston to San Juan is less than $126.

Are there last-minute flights available from Boston to San Juan for under $200?

There are currently 20+ open flights from Boston to San Juan within the next 7 days for less than $200.

What days are nonstop flights available from Boston to San Juan?

Nonstop flights are available for this route on the following days: Wednesday.

How many flights depart from Boston to San Juan on average per day?

On average, you can expect to see 1 flight from Boston Logan Intl to San Juan a day.
Morning (6am - Noon) - 100% of flight departures

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 JetBlue can get you from Boston to San Juan in just under 3h 39m. Your travel time can differ by up to 6h 27m. Airlines will cover a distance of 1688 mi. This flight may include one or multiple stops.

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

Cheapflights users have booked flights from Boston to San Juan round-trip from $102. Another airline that can offer you cheap pricing is JetBlue.

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 $53. Check flights for JetBlue, 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 22m
Average temperature for September in San Juan
89.6 °F
Avg rainfall for September in San Juan
5.7 ″

Airports servicing Boston

Airports servicing San Juan

San Juan Isla Grande (SIG)

Hourly flight availability from Boston to San Juan

Afternoon Noon to 6 PM 93% of BOS to SJU departures
Morning 6 AM to noon 6% 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
Home Caribbean Puerto Rico San Juan Cheap flights from Boston to San Juan