Cheapest return flights from San Juan to Boston in May from $177

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

Return flights

05 May - 20 May Spirit Airlines
05 May - 13 May Spirit Airlines
13 May - 20 May Spirit Airlines
13 May - 03 Jun Spirit Airlines
02 May - 20 May Spirit Airlines
02 May - 13 May Spirit Airlines
14 May - 20 May Spirit Airlines
14 May - 03 Jun Spirit Airlines
14 May - 17 May United
01 May - 20 May Spirit Airlines
01 May - 13 May Spirit Airlines
13 May - 18 May Spirit Airlines
18 May - 03 Jun Spirit Airlines
24 May - 03 Jun Spirit Airlines
24 May - 09 Jun Spirit Airlines
25 May - 03 Jun Spirit Airlines
25 May - 09 Jun Spirit Airlines
24 May - 13 Jun Spirit Airlines
25 May - 13 Jun Spirit Airlines
24 May - 11 Jun Spirit Airlines

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

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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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