Cheapest return flights from Boston to San Juan in January 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 January 2026 (see full year).

Return flights

06 Jan - 22 Jan Delta direct
07 Jan - 14 Jan Delta
23 Jan - 26 Jan American Airlines
06 Jan - 12 Jan American Airlines
07 Jan - 14 Jan jetBlue direct
23 Jan - 26 Jan jetBlue direct
01 Jan - 05 Jan jetBlue direct
06 Jan - 12 Jan jetBlue direct

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

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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