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

Return flights

05 Oct - 12 Oct	FrenchBee
15 Oct - 30 Oct	KLM
12 Oct - 19 Oct	KLM
01 Oct - 08 Oct	KLM
07 Oct - 14 Oct	KLM
11 Oct - 18 Oct	KLM
23 Oct - 30 Oct	KLM
31 Oct - 07 Nov	FrenchBee
08 Oct - 15 Oct	Air Transat
10 Oct - 17 Oct	KLM
20 Oct - 27 Oct	KLM
26 Oct - 02 Nov	SWISS
28 Oct - 04 Nov	SWISS
27 Oct - 03 Nov	Porter Airlines (Canada) Ltd
30 Oct - 06 Nov	Air Transat
25 Oct - 01 Nov	Air Transat

Also check the deals for one-way flights from Montreal to Alicante 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 Alicante in October from $571

Return flights