AirHint found the following cheapest return flights from Ontario (ONT) to Buenos Aires (EZE) in November 2025 (see full year).
Return flights
| 11 Nov - 26 Nov | Volaris | ||
| 18 Nov - 25 Nov | Avianca | ||
| 11 Nov - 18 Nov | Volaris | ||
| 23 Nov - 27 Nov | Volaris | ||
| 15 Nov - 18 Nov | Avianca | ||
| 20 Nov - 27 Nov | Avianca | ||
| 25 Nov - 09 Dec | Avianca |
Also check the deals for one-way flights from Ontario to Buenos Aires in November.
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