AirHint found the following cheapest return flights from Montreal (YUL) to Santiago (SCL) in October 2025 (see full year).

Return flights

06 Oct - 13 Oct	Avianca
08 Oct - 15 Oct	Avianca
20 Oct - 27 Oct	Avianca
01 Oct - 08 Oct	Avianca
05 Oct - 12 Oct	Avianca
15 Oct - 22 Oct	Avianca
19 Oct - 26 Oct	Avianca
13 Oct - 24 Oct	Avianca
05 Oct - 10 Nov	Avianca
24 Oct - 10 Nov	Avianca
27 Oct - 03 Nov	Avianca
29 Oct - 05 Nov	Avianca
29 Oct - 12 Nov	Avianca
17 Oct - 26 Oct	Avianca
22 Oct - 29 Oct	Avianca
28 Oct - 04 Nov	LATAM Airlines Group
30 Oct - 06 Nov	LATAM Airlines Group
31 Oct - 07 Nov	LATAM Airlines Group
26 Oct - 02 Nov	LATAM Airlines Group
16 Oct - 01 Nov	Delta

Also check the deals for one-way flights from Montreal to Santiago in October.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Montreal to Santiago in October from 394€

Return flights