Flights from Boston, MA to San Juan, PR

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Best Deals on Flights From Boston, MA (BOS) to San Juan, PR (SJU)

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Oct 2026
No results for this month.
Nov 2026
from$162*
Last seen: 16 hours ago
One-way/Economy
Dec 2026
from$105*
Last seen: 12 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $162
cmp-daily-histogram-bars-legend-max-price-aria-label $402
Displaying fares for October-2026
  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    31

    Sat

    OCT

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    01

    Sun

  • BOS–SJU, Nov 2, 2026: from $217
    02

    Mon

  • BOS–SJU, Nov 3, 2026: from $217
    03

    Tue

  • BOS–SJU, Nov 4, 2026: from $217
    04

    Wed

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    05

    Thu

  • BOS–SJU, Nov 6, 2026: from $201
    06

    Fri

  • BOS–SJU, Nov 7, 2026: from $197
    07

    Sat

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    08

    Sun

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    09

    Mon

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    10

    Tue

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    11

    Wed

  • BOS–SJU, Nov 12, 2026: from $201
    12

    Thu

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    13

    Fri

  • BOS–SJU, Nov 14, 2026: from $171
    14

    Sat

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    15

    Sun

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    17

    Tue

  • BOS–SJU, Nov 18, 2026: from $162
    18

    Wed

  • BOS–SJU, Nov 19, 2026: from $206
    19

    Thu

  • BOS–SJU, Nov 20, 2026: from $207
    20

    Fri

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    21

    Sat

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    22

    Sun

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    23

    Mon

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    24

    Tue

  • BOS–SJU, Nov 25, 2026: from $312
    25

    Wed

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    26

    Thu

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    27

    Fri

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    28

    Sat

  • BOS–SJU, Nov 29, 2026: from $402
    29

    Sun

  • BOS–SJU: cmp-view-offers-disclaimer. Find Offers
    30

    Mon

    • Range$162-$402

    *Prices found by others in the previous 48 hours for round-trip flights. Prices shown may also require membership in our travel club, Discount Den.

    Flights Deals from Boston, MA to San Juan, PR on Frontier

    $
    Flights Deals from Boston, MA to San Juan, PR on Frontier
    From
    To
    Boston, MA (BOS)San Juan, PR (SJU)One-way
    /
    Discount Den Basic Fare    		Departing Feb 1, 2027

    From

    $176

    Last seen: 21 hours ago

    *Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require membership in our travel club, Discount Den®.

    Boston, MA San Juan, PR

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