Cheapest return flights from Atlanta to San Juan in September from $124

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

Return flights

18 Sep - 21 Sep Frontier Airlines
25 Sep - 28 Sep Frontier Airlines
18 Sep - 23 Sep Frontier Airlines
19 Sep - 21 Sep Frontier Airlines
23 Sep - 27 Sep Frontier Airlines
25 Sep - 29 Sep Frontier Airlines
26 Sep - 30 Sep Frontier Airlines
19 Sep - 23 Sep Frontier Airlines
29 Sep - 03 Oct Frontier Airlines
18 Sep - 22 Sep Frontier Airlines
14 Sep - 20 Sep Frontier Airlines
01 Sep - 01 Oct Frontier Airlines
26 Sep - 06 Oct Frontier Airlines
29 Sep - 03 Oct Frontier Airlines direct
27 Sep - 05 Oct Frontier Airlines
11 Sep - 02 Oct Spirit Airlines
14 Sep - 02 Oct Spirit Airlines
12 Sep - 02 Oct Spirit Airlines
20 Sep - 02 Oct Spirit Airlines
18 Sep - 02 Oct Spirit Airlines

Also check the deals for one-way flights from Atlanta 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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