AirHint found the following cheapest return flights from New York (LGA) to San Juan (SJU) in March 2026 (see full year).

Return flights

04 Mar - 11 Mar	United
01 Mar - 04 Mar	Frontier Airlines
01 Mar - 05 Mar	Frontier Airlines
21 Mar - 28 Mar	jetBlue
05 Mar - 09 Mar	Frontier Airlines
06 Mar - 10 Mar	jetBlue
28 Mar - 04 Apr	jetBlue
05 Mar - 15 Mar	Frontier Airlines
10 Mar - 13 Mar	Southwest Airlines
31 Mar - 03 Apr	Southwest Airlines
17 Mar - 20 Mar	Southwest Airlines
27 Mar - 06 Apr	jetBlue
12 Mar - 21 Mar	jetBlue
29 Mar - 01 Apr	Delta
30 Mar - 02 Apr	Delta

Also check the deals for one-way flights from New York 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.

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Cheapest return flights from New York to San Juan in March from $283

Return flights