AirHint found the following cheapest return flights from New York (LGA) to Buenos Aires (AEP) in October 2025 (see full year).

Return flights

01 Oct - 16 Oct	Spirit Airlines
07 Oct - 09 Oct	Spirit Airlines
25 Oct - 28 Oct	Spirit Airlines
08 Oct - 15 Oct	Spirit Airlines
31 Oct - 11 Nov	Spirit Airlines
30 Oct - 02 Nov	Spirit Airlines
31 Oct - 02 Nov	Spirit Airlines
06 Oct - 13 Oct	Spirit Airlines
31 Oct - 03 Nov	LATAM Airlines Group
20 Oct - 27 Oct	Frontier Airlines
03 Oct - 19 Oct	Spirit Airlines
11 Oct - 20 Oct	Spirit Airlines
11 Oct - 19 Oct	Spirit Airlines
18 Oct - 26 Oct	Spirit Airlines

Also check the deals for one-way flights from New York to Buenos Aires 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 New York to Buenos Aires in October from 642€

Return flights