Cheapest return flights from Boston to San Juan in January from 151€

AirHint found the following cheapest return flights from Boston (BOS) to San Juan (SJU) in January 2026 (see full year).

Return flights

21 Jan - 27 Jan Spirit Airlines direct
21 Jan - 28 Jan Spirit Airlines direct
21 Jan - 24 Jan Spirit Airlines direct
21 Jan - 31 Jan Spirit Airlines direct
24 Jan - 27 Jan Spirit Airlines direct
24 Jan - 28 Jan Spirit Airlines direct
24 Jan - 31 Jan Spirit Airlines direct
27 Jan - 28 Jan Spirit Airlines direct
27 Jan - 31 Jan Spirit Airlines direct
21 Jan - 23 Jan Spirit Airlines
31 Jan - 01 Feb Spirit Airlines direct
21 Jan - 01 Feb Spirit Airlines direct
24 Jan - 01 Feb Spirit Airlines direct
27 Jan - 01 Feb Spirit Airlines direct
31 Jan - 09 Feb Spirit Airlines direct
31 Jan - 19 Feb Spirit Airlines direct
21 Jan - 09 Feb Spirit Airlines direct
24 Jan - 09 Feb Spirit Airlines direct
27 Jan - 09 Feb Spirit Airlines direct
31 Jan - 21 Feb Spirit Airlines

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

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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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