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

Return flights

18 Aug - 21 Aug	Frontier Airlines
11 Aug - 22 Aug	Spirit Airlines
17 Aug - 24 Aug	Spirit Airlines
13 Aug - 20 Aug	Frontier Airlines
25 Aug - 08 Sep	Frontier Airlines
21 Aug - 04 Sep	Spirit Airlines
27 Aug - 08 Sep	Spirit Airlines
29 Aug - 07 Sep	Spirit Airlines
11 Aug - 24 Aug	Spirit Airlines
09 Aug - 16 Aug	Spirit Airlines
20 Aug - 23 Aug	Frontier Airlines
05 Aug - 18 Aug	Spirit Airlines
08 Aug - 27 Aug	Spirit Airlines
15 Aug - 24 Aug	Spirit Airlines
15 Aug - 06 Sep	Spirit Airlines
15 Aug - 25 Sep	United

Also check the deals for one-way flights from Newark to Buenos Aires in August.

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 August from 750€

Return flights