Cheapest return flights from Boston to Buenos Aires in December from 903€

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

Return flights

15 Dec - 22 Dec Spirit Airlines
16 Dec - 12 Jan Spirit Airlines
26 Dec - 16 Jan Frontier Airlines
24 Dec - 05 Jan LATAM Airlines Group
22 Dec - 04 Jan Spirit Airlines
24 Dec - 04 Jan LATAM Airlines Group
18 Dec - 03 Jan jetBlue
18 Dec - 04 Jan Copa
19 Dec - 04 Jan Copa

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

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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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