Cheap Flights from Boston, MA to San Juan from $57

Return flight: San Juan – Boston
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On Cheapflightsplus.com you will find 2 direct and 397 connecting flights from Boston to San Juan. You can compare airfare deals from 7 airlines and multiple travel sites from $57, book and save on cheap plane tickets and last minute offers. Also check out BOS-SJU flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Boston to San Juan Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $57 (one-way), $98 (round-trip).
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Best Flights from Boston to San Juan Today

Take a look at the list of non stop flights and flights with layovers from Boston to San Juan with the lowest price of $57. The fastest direct flight takes 3h 54m and the fastest connecting – 6h 35m.
Price Departure Arrival Flight Duration Airline Flight
from $57
Find flight
10:18
Boston
Logan
 14:23
San Juan
Luis Munoz Marin Intl
 4h 5m Spirit Airlines
NK1839
from $131
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14:42
Boston
Logan
 18:36
San Juan
Luis Munoz Marin Intl
 3h 54m Spirit Airlines
NK1803
from $76
Find flight
16:40
Boston
Logan
 01:11+1 день
San Juan
Luis Munoz Marin Intl
 8h 31m
layover
2h 20m - Orlando
 Spirit Airlines
NK3797
NK3166
from $88
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17:42
Boston
Logan
 00:54+1 день
San Juan
Luis Munoz Marin Intl
 7h 12m
layover
1h 16m - Orlando
 Spirit Airlines
NK2093
NK1989
Show all tickets
*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on September 18, 2025
Full flight schedule will help you in detecting at what time planes fly from Boston to San Juan. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
06:10 — 19:07
06:10 — 09:33 NK2201 Spirit Airlines
Boston — Miami
7h 4m stop
16:37 — 19:07 NK2221 Spirit Airlines
Miami — San Juan
12h 57m
including layover
Find flight
from$109
06:10 — 15:41
06:10 — 09:32 NK296 Spirit Airlines
Boston — Miami
3h 32m stop
13:04 — 15:41 NK1037 Spirit Airlines
Miami — San Juan
9h 31m
including layover
Find flight
from$158
09:40 — 00:28
+1 day
09:40 — 12:58 F93347 Frontier Airlines
Boston — Orlando
8h 30m stop
21:26 — 00:32 F91746 Frontier Airlines
Orlando — San Juan
14h 48m
including layover
Find flight
from$125
09:40 — 08:59
+1 day
09:40 — 12:58 F93347 Frontier Airlines
Boston — Orlando
17h 2m stop
06:00 — 08:59 F92250 Frontier Airlines
Orlando — San Juan
23h 19m
including layover
Find flight
from$130
09:46 — 20:02
09:46 — 13:16 NK2235 Spirit Airlines
Boston — Miami
4h 12m stop
17:28 — 20:02 NK2057 Spirit Airlines
Miami — San Juan
10h 16m
including layover
Find flight
from$158
09:49 — 17:45
11:05 — 14:34 F91215 Frontier Airlines
Boston — Tampa
1h 19m stop
12:30 — 16:28 F92216 Frontier Airlines
Tampa — San Juan
7h 56m
including layover
Find flight
from$113
10:18 — 14:23
10:18 — 14:23 NK1839 Spirit Airlines
Boston — San Juan
4h 5m
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from$57
14:42 — 18:36
14:42 — 18:36 NK1803 Spirit Airlines
Boston — San Juan
3h 54m
Find flight
from$131
16:40 — 01:11
+1 day
16:40 — 19:57 NK3797 Spirit Airlines
Boston — Orlando
2h 20m stop
22:17 — 01:11 NK3166 Spirit Airlines
Orlando — San Juan
8h 31m
including layover
Find flight
from$76
16:40 — 09:56
+1 day
16:40 — 19:57 NK3797 Spirit Airlines
Boston — Orlando
11h 3m stop
07:00 — 09:56 NK3159 Spirit Airlines
Orlando — San Juan
17h 16m
including layover
Find flight
from$81
17:42 — 00:54
+1 day
17:42 — 20:53 NK2093 Spirit Airlines
Boston — Orlando
1h 16m stop
22:09 — 00:54 NK1989 Spirit Airlines
Orlando — San Juan
7h 12m
including layover
Find flight
from$88
17:42 — 10:45
+1 day
17:42 — 20:53 NK2093 Spirit Airlines
Boston — Orlando
11h 1m stop
07:54 — 10:45 NK2525 Spirit Airlines
Orlando — San Juan
17h 3m
including layover
Find flight
from$117
20:14 — 10:39
+1 day
20:14 — 22:31 NK2150 Spirit Airlines
Boston — Detroit
7h 39m stop
06:10 — 10:39 NK2798 Spirit Airlines
Detroit — San Juan
14h 25m
including layover
Find flight
from$158
20:39 — 10:06
+1 day
20:39 — 00:15 NK1231 Spirit Airlines
Boston — Miami
7h 25m stop
07:40 — 10:06 NK1396 Spirit Airlines
Miami — San Juan
13h 27m
including layover
Find flight
from$110
20:50 — 12:20
+1 day
20:50 — 00:18 NK1841 Spirit Airlines
Boston — Orlando
9h 16m stop
09:34 — 12:20 NK1989 Spirit Airlines
Orlando — San Juan
15h 30m
including layover
Find flight
from$110
*Departure and arrival times - local. Updated on September 18, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Boston to San Juan depends on and how to choose the most interesting flight option for you.

Distance between Boston and San Juan is 2702 miles. Time difference between the cities is 1h. Airplanes depart 05:15 to 21:40 from 4 Boston airports and arrive 05:15 to 21:40 to 2 San Juan airports. Average flight time is 4h.

  • The fastest flight 3h 54m
  • Average flight time 4h
  • The earliest flight 05:15
  • The latest flight 21:40
  • Distance 1679 ml

The cheapest months to travel to San Juan are july (from 57 $), september (from 76 $), october (from 81 $).

The most expensive months are december (from 562 $), january (from 561 $), august (from 125 $).

What is the lowest airfare Boston to San Juan?

The cheapest plane ticket found by our users is $57. This airfare is for economy class on one-way NK1839 flight by Spirit Airlines for August 7, 2025 which leaves Logan in Boston at 10:18 am and arrives at San Juan Luis Munoz Marin Intl at 14:23.

Economy class
$57
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Business class
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First class
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Popular Airlines on the Route

The flight Boston — San Juan is served by 7 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by Air Canada - 2 departures per week at the price of from $ 366 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 1710.

Direct flights

There are 2 nonstop flights on the route. The fastest direct flight is NK1803 by Spirit Airlines takes 3h 54m and the cheapest is NK1839 by Spirit Airlines for $57.

  • NK - Spirit Airlines
    from $57
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Connecting Flights

There are 397 flights with layovers on the route. The fastest connecting flight is UA570 by United Airlines takes 6h 35m and the cheapest is NK1839 by Spirit Airlines for $76.

  • AC - Air Canada
    from $366
    Find
  • AS - Alaska Airlines
    from $403
    Find
  • F9 - Frontier Airlines
    from $113
    Find
  • SY - Sun Country Airlines
    from $572
    Find
  • UA - United Airlines
    from $211
    Find
  • NK - Spirit Airlines
    from $76
    Find
  • G4 - Allegiant Air
    from $202
    Find
See more connecting flights

Airports

You can fly from Boston to San Juan from 4 airports (Boston City Heliport, Boston RT128 Rail, Boston South Rail, Logan).

Boston airports

  • Boston City Heliport-JBC
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  • Boston RT128 Rail-ZRU
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  • Boston South Rail-ZTO
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  • Logan-BOS
    from $57
    Find

San Juan airports

  • Isla Grande-SIG
    Find
  • Luis Munoz Marin Intl-SJU
    Find

Airplanes

There are flights to San Juan from Boston by 7 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Boston

You may also consider searching for discounted plane tickets to some other popular places from Boston within United States.

Top International Destinations from Boston

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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