AirHint found the following cheapest return flights from Boston (BOS) to San Juan (SJU)
in March 2025 (see full year ).
Return flights
05 Mar
- 05 Mar
Frontier Airlines
125 €
02 Mar
- 05 Mar
Spirit Airlines
130 €
02 Mar
- 05 Mar
Spirit Airlines
146 €
direct
01 Mar
- 04 Mar
Spirit Airlines
161 €
03 Mar
- 10 Mar
Frontier Airlines
164 €
05 Mar
- 24 Mar
Frontier Airlines
164 €
01 Mar
- 04 Mar
Spirit Airlines
167 €
direct
03 Mar
- 08 Mar
Frontier Airlines
168 €
05 Mar
- 24 Mar
Frontier Airlines
179 €
direct
05 Mar
- 17 Mar
Frontier Airlines
184 €
28 Mar
- 02 Apr
Frontier Airlines
226 €
direct
29 Mar
- 05 Apr
Frontier Airlines
256 €
direct
28 Mar
- 01 Apr
Frontier Airlines
271 €
25 Mar
- 01 Apr
Frontier Airlines
273 €
30 Mar
- 03 Apr
jetBlue
311 €
direct
25 Mar
- 01 Apr
Delta
361 €
direct
20 Mar
- 01 Apr
United
401 €
15 Mar
- 05 Apr
Frontier Airlines
414 €
direct
28 Mar
- 06 Apr
Frontier Airlines
486 €
29 Mar
- 06 Apr
Frontier Airlines
486 €
Also check the deals for one-way flights from Boston to San Juan in March .
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.