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

Return flights

08 Oct - 22 Oct	Avianca
15 Oct - 05 Nov	Avianca
29 Oct - 19 Nov	Avianca
15 Oct - 27 Oct	Avianca
22 Oct - 10 Nov	Avianca
22 Oct - 07 Nov	Avianca
22 Oct - 31 Oct	Avianca
08 Oct - 29 Oct	Avianca
06 Oct - 29 Oct	Avianca
22 Oct - 16 Nov	Avianca
14 Oct - 21 Oct	Delta
06 Oct - 16 Oct	LATAM Airlines Group
02 Oct - 16 Oct	LATAM Airlines Group
12 Oct - 21 Oct	LATAM Airlines Group
07 Oct - 21 Oct	LATAM Airlines Group
27 Oct - 03 Nov	LATAM Airlines Group
28 Oct - 04 Nov	LATAM Airlines Group
28 Oct - 18 Nov	LATAM Airlines Group
29 Oct - 05 Nov	LATAM Airlines Group
31 Oct - 07 Nov	LATAM Airlines Group

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 $479

Return flights