AirHint found the following cheapest one-way flights from Toronto (YTZ) to Madrid (MAD) in September 2025 (see full year).

One-Way flights

23 Sep	Porter Airlines (Canada) Ltd
08 Sep	Air Transat
01 Sep	Air Transat
20 Sep	Porter Airlines (Canada) Ltd
09 Sep	Air Transat
07 Sep	Air Transat
29 Sep	Porter Airlines (Canada) Ltd
22 Sep	Air Transat
03 Sep	Air Transat
18 Sep	Air Transat

Also check the deals for return flights from Toronto to Madrid in September.

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 Toronto to Madrid in September from $318

One-Way flights