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

Return flights

23 Sep - 07 Oct	Spirit Airlines
24 Sep - 29 Sep	Spirit Airlines
23 Sep - 29 Sep	Spirit Airlines
21 Sep - 29 Sep	Spirit Airlines
21 Sep - 22 Sep	Spirit Airlines
18 Sep - 22 Sep	Frontier Airlines
17 Sep - 22 Sep	Allegiant Air
22 Sep - 29 Sep	Spirit Airlines
18 Sep - 29 Sep	Spirit Airlines
18 Sep - 19 Sep	Spirit Airlines
08 Sep - 11 Sep	Frontier Airlines

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

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 Columbus to San Juan in September from $235

Return flights