Cheapest one-way flights from Boston to San Juan in March from 47€

Best time to book flights for Boston (BOS) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest one-way flights from Boston (BOS) to San Juan (SJU) in March 2025 (see full year).

One-Way flights

31 Mar Frontier Airlines direct
05 Mar Frontier Airlines direct
24 Mar Frontier Airlines direct
11 Mar Frontier Airlines
17 Mar Frontier Airlines
20 Mar Frontier Airlines
25 Mar Frontier Airlines
10 Mar Frontier Airlines
03 Mar Frontier Airlines
06 Mar Frontier Airlines

Also check the deals for return flights from Boston to San Juan in March.

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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