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

Return flights

27 Oct - 03 Nov	Avianca
15 Oct - 22 Oct	Copa
21 Oct - 28 Oct	Copa
26 Oct - 02 Nov	Avianca
07 Oct - 14 Oct	Copa
28 Oct - 04 Nov	Copa
19 Oct - 26 Oct	Copa
16 Oct - 23 Oct	Copa
01 Oct - 08 Oct	Delta
06 Oct - 13 Oct	Delta
05 Oct - 12 Oct	Copa
14 Oct - 21 Oct	Copa
05 Oct - 19 Oct	Copa
31 Oct - 19 Nov	LATAM Airlines Group
26 Oct - 03 Nov	Copa
30 Oct - 10 Nov	LATAM Airlines Group
25 Oct - 01 Nov	Copa
30 Oct - 06 Nov	LATAM Airlines Group
29 Oct - 05 Nov	Copa
31 Oct - 07 Nov	LATAM Airlines Group

Also check the deals for one-way flights from Montreal to Quito 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 Quito in October from $423

Return flights