AirHint found the following cheapest return flights from Ontario (ONT) to Santiago (SCL) in October 2025 (see full year).
Return flights
| 28 Oct - 04 Nov | Avianca | ||
| 28 Oct - 30 Oct | Avianca | ||
| 29 Oct - 05 Nov | Volaris | ||
| 24 Oct - 28 Oct | Volaris |
Also check the deals for one-way flights from Ontario to Santiago in October.
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