Frontier’s UpFront Plus seats offer a guaranteed empty middle seat for extra comfort.
Frontier’s Zone 1 boarding is available with a carry-on bag or special fare bundle.
Round-trip from | $171 (Cheapflightsfares) |
---|---|
One-way from | $115 (Trip.com) |
Popular in | July |
Cheapest in | January |
Average price | $224 |
Good round-trip deal | $254 or less |
Good one-way deal | $157 or less |
Fly from
Fly to
Route
Depart
Return
Price
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 10/17
4:31 pm-11:59 pm
1 stop7h 28m
Boston Logan Intl
Tue 10/21
12:00 pm-4:05 pm
Nonstop4h 05m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 10/29
4:05 am-12:11 pm
1 stop8h 06m
Boston Logan Intl
Sun 11/2
7:40 am-12:44 pm
Nonstop4h 04m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 11/14
8:10 am-11:23 am
Nonstop4h 13m
Boston Logan Intl
Mon 11/17
6:20 am-6:13 pm
1 stop10h 53m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 11/19
5:05 am-12:11 pm
1 stop8h 06m
Boston Logan Intl
Sun 11/23
10:55 pm-3:52 am
Nonstop3h 57m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 10/17
4:31 pm-11:59 pm
1 stop7h 28m
Boston Logan Intl
Mon 10/20
8:00 am-12:27 pm
Nonstop4h 27m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 10/15
1:32 pm-5:45 pm
Nonstop4h 13m
Boston Logan Intl
Fri 10/17
8:15 am-12:21 pm
Nonstop4h 06m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 10/16
1:32 pm-5:45 pm
Nonstop4h 13m
Boston Logan Intl
Tue 10/21
8:15 am-12:21 pm
Nonstop4h 06m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 10/24
1:32 pm-5:45 pm
Nonstop4h 13m
Boston Logan Intl
Tue 10/28
8:15 am-12:21 pm
Nonstop4h 06m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 10/30
1:32 pm-5:45 pm
Nonstop4h 13m
Boston Logan Intl
Sun 11/2
8:15 am-1:21 pm
Nonstop4h 06m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 10/24
1:32 pm-5:45 pm
Nonstop4h 13m
Boston Logan Intl
Wed 10/29
8:15 am-12:21 pm
Nonstop4h 06m
Booking 43 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan Luis Munoz Marin Intl Airport to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, January is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Boston (average of $218). Flying from San Juan Luis Munoz Marin Intl Airport to Boston in July is currently the most expensive (average of $311). 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.
When flying from San Juan Luis Munoz Marin Intl Airport to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 15% versus a flight at noon.
Travelers seeking maximum savings on their San Juan Luis Munoz Marin Intl Airport to Boston flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Comfort
Boarding
Food
Entertainment
Overall
Crew
Reviews
Morgan Rae,Aug 2025
BRU - JFK
Comfort
Boarding
Food
Entertainment
Overall
Crew
Reviews
Morgan Rae,Aug 2025
BRU - JFK
Comfort
Boarding
Food
Entertainment
Overall
Crew
Reviews
Morgan Rae,Aug 2025
BRU - JFK
Comfort
Boarding
Food
Entertainment
Overall
Crew
Reviews
Morgan Rae,Aug 2025
BRU - JFK
Comfort
Boarding
Food
Entertainment
Overall
Crew
Reviews
Morgan Rae,Aug 2025
BRU - JFK
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$72 | Average$145 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$76 | Average$219 | FlexibilityNo cancel fee | On-time65% | |
Cheapest$135 | Average$300 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$136 | Average$281 | FlexibilityNo cancel fee | On-timeN/A |