Cheapest return flights from Boston to San Juan in December from 171€

AirHint found the following cheapest return flights from Boston (BOS) to San Juan (SJU) in December 2025 (see full year).

Return flights

03 Dec - 18 Dec Spirit Airlines
03 Dec - 22 Dec Spirit Airlines
03 Dec - 23 Dec Spirit Airlines
03 Dec - 19 Dec Spirit Airlines
11 Dec - 22 Dec Spirit Airlines
11 Dec - 23 Dec Spirit Airlines
11 Dec - 19 Dec Spirit Airlines
07 Dec - 18 Dec Spirit Airlines
07 Dec - 22 Dec Spirit Airlines
07 Dec - 23 Dec Spirit Airlines
31 Dec - 12 Jan Spirit Airlines direct
30 Dec - 14 Jan Spirit Airlines direct
31 Dec - 07 Jan Spirit Airlines
31 Dec - 17 Jan Spirit Airlines direct
30 Dec - 12 Jan Spirit Airlines direct
30 Dec - 10 Jan Spirit Airlines
11 Dec - 01 Jan Spirit Airlines
29 Dec - 12 Jan Spirit Airlines direct
31 Dec - 05 Jan Spirit Airlines
28 Dec - 12 Jan Spirit Airlines direct

Also check the deals for one-way flights from Boston to San Juan in December.

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