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

Return flights

01 Oct - 08 Oct	Avianca
06 Oct - 13 Oct	Avianca
20 Oct - 27 Oct	Avianca
22 Oct - 29 Oct	Avianca
13 Oct - 26 Oct	Avianca
13 Oct - 20 Oct	Avianca
26 Oct - 02 Nov	Avianca
27 Oct - 03 Nov	Avianca
29 Oct - 05 Nov	Avianca
08 Oct - 15 Oct	Avianca
12 Oct - 19 Oct	Avianca
19 Oct - 26 Oct	Avianca
31 Oct - 07 Nov	Avianca
28 Oct - 04 Nov	United
30 Oct - 10 Nov	United
15 Oct - 22 Oct	Avianca
21 Oct - 14 Nov	Delta
24 Oct - 19 Nov	LATAM Airlines Group
24 Oct - 17 Nov	LATAM Airlines Group
30 Oct - 06 Nov	United

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 395€

Return flights