Spirit’s Big Front Seats offer 11 inches more legroom and larger tray tables.
Spirit’s Wi-Fi allows streaming; book a plan during ticket purchase for savings.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $124 (Cheapflightsfares) |
One-way from | $93 (Delta) |
Popular in | July |
Cheapest in | February |
Average price | $234 |
Good round-trip deal | $143 or less |
Good one-way deal | $143 or less |
Fly from
Fly to
Route
Depart
Return
Price
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 4/2
1:23 pm-5:49 pm
Nonstop4h 26m
Boston Logan Intl
Sun 4/5
8:10 am-12:18 pm
Nonstop4h 08m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 3/4
7:00 am-3:15 pm
1 stop9h 15m
Boston Logan Intl
Tue 3/10
8:10 am-12:18 pm
Nonstop4h 08m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 1/22
2:05 am-9:14 am
1 stop8h 09m
Boston Logan Intl
Sat 1/31
4:05 pm-6:11 am
2 stops13h 06m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 2/13
6:10 am-9:20 am
Nonstop4h 10m
Boston Logan Intl
Mon 2/16
5:05 pm-3:54 am
1 stop9h 49m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 1/23
7:15 pm-10:28 pm
Nonstop4h 13m
Boston Logan Intl
Tue 1/27
1:00 pm-6:02 pm
Nonstop4h 02m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Sat 5/16
7:00 am-4:39 pm
1 stop9h 39m
Boston Logan Intl
Tue 5/19
9:15 pm-1:19 am
Nonstop4h 04m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 3/26
5:01 am-11:17 am
1 stop6h 16m
Boston Logan Intl
Sun 3/29
11:20 am-3:23 pm
Nonstop4h 03m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 4/29
1:30 pm-5:53 pm
Nonstop4h 23m
Boston Logan Intl
Sun 5/3
8:20 am-12:28 pm
Nonstop4h 08m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 12/25
6:30 am-1:52 pm
1 stop8h 22m
Boston Logan Intl
Thu 1/1
5:00 pm-2:27 am
1 stop8h 27m
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 12/19
1:55 pm-9:28 pm
1 stop8h 33m
Boston Logan Intl
Thu 1/1
5:30 am-3:47 pm
1 stop9h 17m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Booking 66 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, February is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Boston (average of $56). Flying from San Juan Luis Munoz Marin Intl Airport to Boston in October is currently the most expensive (average of $138). 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 afternoon, which can drop the price by up to 19% versus a flight in the morning.
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.
About 17% of weekly flights between San Juan and Boston have experienced delays in the past year, with the average delay time being 159 minutes.
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
Tuesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Delta have had the lowest number of delays on this route, with just 11% of flights being delayed.
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$86 | Average$228 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$90 | Average$170 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$136 | Average$284 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$184 | Average$315 | FlexibilityNo cancel fee | On-time62% |