AirHint found the following cheapest return flights from New York (LGA) to San Juan (SJU) in October 2025 (see full year).

Return flights

07 Oct - 21 Oct	United
21 Oct - 04 Nov	United
22 Oct - 05 Nov	United
08 Oct - 22 Oct	United
15 Oct - 29 Oct	United
11 Oct - 18 Oct	Frontier Airlines
04 Oct - 07 Oct	Frontier Airlines
01 Oct - 04 Oct	Frontier Airlines
23 Oct - 08 Nov	Spirit Airlines
23 Oct - 07 Nov	Spirit Airlines
04 Oct - 18 Oct	United
23 Oct - 10 Nov	Spirit Airlines
28 Oct - 06 Nov	United
02 Oct - 16 Oct	Spirit Airlines
15 Oct - 22 Oct	United
21 Oct - 25 Oct	United
28 Oct - 04 Nov	Delta
29 Oct - 12 Nov	United
29 Oct - 06 Nov	Frontier Airlines
26 Oct - 04 Nov	Frontier Airlines

Also check the deals for one-way flights from New York to San Juan in October.

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 October from 160€

Return flights