Cheapest return flights from Newark to Buenos Aires in December from $638

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

Return flights

06 Dec - 13 Dec Spirit Airlines
07 Dec - 13 Dec Spirit Airlines
04 Dec - 07 Dec Spirit Airlines
07 Dec - 14 Dec Spirit Airlines
05 Dec - 12 Dec Spirit Airlines
09 Dec - 13 Dec Spirit Airlines
05 Dec - 15 Dec Spirit Airlines
04 Dec - 12 Dec Spirit Airlines
09 Dec - 26 Jan Spirit Airlines
09 Dec - 18 Dec Spirit Airlines
02 Dec - 09 Dec Spirit Airlines
13 Dec - 13 Jan Spirit Airlines
29 Dec - 11 Jan Frontier Airlines
13 Dec - 19 Jan Spirit Airlines
26 Dec - 23 Jan Spirit Airlines
29 Dec - 29 Jan Spirit Airlines
15 Dec - 13 Jan Spirit Airlines
22 Dec - 10 Jan Spirit Airlines
12 Dec - 10 Jan Spirit Airlines
15 Dec - 07 Jan Spirit Airlines

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

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