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

Return flights

21 Oct - 27 Oct	Southwest Airlines
22 Oct - 28 Oct	Delta
04 Oct - 11 Oct	Southwest Airlines
24 Oct - 02 Nov	Frontier Airlines
03 Oct - 07 Oct	Southwest Airlines
24 Oct - 27 Oct	Spirit Airlines
05 Oct - 26 Oct	Spirit Airlines
15 Oct - 27 Oct	Spirit Airlines
26 Oct - 27 Oct	Spirit Airlines
08 Oct - 27 Oct	Spirit Airlines
22 Oct - 27 Oct	Spirit Airlines
26 Oct - 15 Nov	Spirit Airlines
15 Oct - 02 Nov	Spirit Airlines
26 Oct - 02 Nov	Spirit Airlines
21 Oct - 02 Nov	Spirit Airlines
22 Oct - 02 Nov	Spirit Airlines

Also check the deals for one-way flights from Nashville 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 Nashville to San Juan in October from 203€

Return flights