AirHint found the following cheapest return flights from Newark (EWR) to Buenos Aires (EZE) in October 2025 (see full year).

Return flights

01 Oct - 08 Oct	Spirit Airlines
01 Oct - 17 Oct	Spirit Airlines
07 Oct - 14 Oct	Aeromexico
01 Oct - 11 Oct	Spirit Airlines
22 Oct - 29 Oct	Delta
09 Oct - 16 Oct	Spirit Airlines
09 Oct - 17 Oct	Spirit Airlines
21 Oct - 28 Oct	United
26 Oct - 18 Nov	Delta
20 Oct - 29 Oct	United
31 Oct - 14 Nov	United
02 Oct - 10 Oct	Aeromexico
29 Oct - 05 Nov	Aeromexico
30 Oct - 03 Nov	Air Canada
17 Oct - 10 Nov	United

Also check the deals for one-way flights from Newark 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 Newark to Buenos Aires in October from $841

Return flights