Cheapest return flights from Boston to San Juan in December from $304

Best time to book flights for Boston (BOS) to San Juan (SJU) flights at AirHint

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

Return flights

03 Dec - 09 Dec Delta direct
23 Dec - 27 Dec jetBlue direct
23 Dec - 06 Jan jetBlue direct
28 Dec - 02 Jan jetBlue direct
25 Dec - 02 Jan jetBlue direct
27 Dec - 03 Jan jetBlue
26 Dec - 30 Dec jetBlue
26 Dec - 30 Dec jetBlue direct
19 Dec - 27 Dec jetBlue
19 Dec - 27 Dec jetBlue direct
26 Dec - 01 Jan jetBlue direct
26 Dec - 02 Jan jetBlue direct
27 Dec - 03 Jan Delta direct

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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