AirHint found the following cheapest return flights from Boston (BOS) to Buenos Aires (EZE) in May 2026 (see full year).
Return flights
| 14 May - 31 May | Arajet | ||
| 10 May - 15 May | Avianca | ||
| 13 May - 31 May | LATAM Airlines Group | ||
| 19 May - 29 May | Copa | ||
| 26 May - 17 Jun | Air Canada |
Also check the deals for one-way flights from Boston to Buenos Aires in May.
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