Cheapest return flights from Boston to San Juan in April from 121€

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

Return flights

04 Apr - 11 Apr Frontier Airlines direct
04 Apr - 09 Apr Frontier Airlines direct
08 Apr - 11 Apr Frontier Airlines
15 Apr - 22 Apr Spirit Airlines direct
15 Apr - 02 May Spirit Airlines
15 Apr - 18 Apr Spirit Airlines direct
15 Apr - 23 Apr Spirit Airlines direct
08 Apr - 22 Apr Spirit Airlines direct
01 Apr - 08 Apr Delta direct
01 Apr - 09 Apr Delta direct
02 Apr - 04 Apr Frontier Airlines direct
20 Apr - 05 May Spirit Airlines
25 Apr - 13 May Spirit Airlines
25 Apr - 02 May Spirit Airlines
15 Apr - 04 May Spirit Airlines
30 Apr - 19 May Spirit Airlines
30 Apr - 13 May Spirit Airlines
30 Apr - 02 May Spirit Airlines
25 Apr - 10 May Spirit Airlines
25 Apr - 04 May Spirit Airlines

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

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