AirHint found the following cheapest return flights from Boston (BOS) to Buenos Aires (AEP) in January 2026 (see full year).
Return flights
| 12 Jan - 27 Jan | LATAM Airlines Group | ||
| 04 Jan - 13 Jan | Spirit Airlines | ||
| 02 Jan - 09 Jan | jetBlue |
Also check the deals for one-way flights from Boston to Buenos Aires in January.
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