Cheapest return flights from Los Angeles to San Juan in September from 223€

AirHint found the following cheapest return flights from Los Angeles (LAX) to San Juan (SJU) in September 2025 (see full year).

Return flights

01 Sep - 12 Sep Frontier Airlines
26 Sep - 28 Sep Frontier Airlines
19 Sep - 21 Sep Frontier Airlines
01 Sep - 04 Sep Frontier Airlines
26 Sep - 29 Sep Frontier Airlines
06 Sep - 12 Sep Frontier Airlines
20 Sep - 26 Sep Frontier Airlines
05 Sep - 11 Sep Frontier Airlines
28 Sep - 05 Oct Frontier Airlines
01 Sep - 06 Sep Frontier Airlines
12 Sep - 20 Sep Frontier Airlines
24 Sep - 05 Oct Spirit Airlines
27 Sep - 05 Oct Spirit Airlines
20 Sep - 05 Oct Spirit Airlines
17 Sep - 05 Oct Spirit Airlines
24 Sep - 06 Oct Spirit Airlines
27 Sep - 06 Oct Spirit Airlines
20 Sep - 06 Oct Spirit Airlines
17 Sep - 06 Oct Spirit Airlines
15 Sep - 05 Oct Spirit Airlines

Also check the deals for one-way flights from Los Angeles to San Juan in September.

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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