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

18 Sep - 21 Sep Frontier Airlines
18 Sep - 28 Sep Frontier Airlines
26 Sep - 05 Oct Frontier Airlines
19 Sep - 22 Sep Frontier Airlines
04 Sep - 18 Sep Frontier Airlines
18 Sep - 29 Sep Frontier Airlines
26 Sep - 29 Sep Frontier Airlines
08 Sep - 14 Sep Frontier Airlines
11 Sep - 18 Sep Frontier Airlines
20 Sep - 25 Sep Frontier Airlines
27 Sep - 05 Oct Spirit Airlines
03 Sep - 18 Sep Spirit Airlines
20 Sep - 05 Oct Spirit Airlines
18 Sep - 05 Oct Spirit Airlines
25 Sep - 05 Oct Spirit Airlines
29 Sep - 05 Oct Spirit Airlines
29 Sep - 19 Oct Spirit Airlines
19 Sep - 05 Oct Spirit Airlines
29 Sep - 20 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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