AirHint found the following cheapest return flights from San Francisco (SFO) to Buenos Aires (AEP) in December 2025 (see full year).
Return flights
| 01 Dec - 10 Dec | LATAM Airlines Group | ||
| 15 Dec - 25 Dec | Hawaiian Airlines | ||
| 26 Dec - 14 Jan | Frontier Airlines | ||
| 24 Dec - 31 Dec | LATAM Airlines Group | ||
| 22 Dec - 01 Jan | Hawaiian Airlines | ||
| 26 Dec - 03 Jan | Delta |
Also check the deals for one-way flights from San Francisco to Buenos Aires in December.
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