AirHint found the following cheapest one-way flights from Montreal (YUL) to Barcelona (BCN) in October 2025 (see full year).

One-Way flights

13 Oct	Air Transat
01 Oct	FrenchBee
08 Oct	FrenchBee
15 Oct	FrenchBee
05 Oct	FrenchBee
22 Oct	FrenchBee
25 Oct	Porter Airlines (Canada) Ltd
04 Oct	Air Transat
24 Oct	Porter Airlines (Canada) Ltd
18 Oct	Porter Airlines (Canada) Ltd

Also check the deals for return flights from Montreal to Barcelona 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 one-way flights from Montreal to Barcelona in October from 243€

One-Way flights