AirHint found the following cheapest return flights from Toronto (YTZ) to Barcelona (BCN) in September 2026 (see full year).

Return flights

07 Sep - 14 Sep	Air Transat
23 Sep - 28 Sep	Air Transat
08 Sep - 25 Sep	Air Transat
02 Sep - 13 Sep	Air Transat
02 Sep - 12 Sep	Air Transat
23 Sep - 05 Oct	Air Transat
09 Sep - 25 Sep	Air Transat
01 Sep - 07 Sep	Air Transat
10 Sep - 23 Sep	Air Transat
13 Sep - 03 Oct	Air Transat
13 Sep - 09 Oct	Air Transat
25 Sep - 04 Oct	Porter Airlines (Canada) Ltd
01 Sep - 12 Sep	Air Transat
17 Sep - 22 Sep	Air Transat
26 Sep - 07 Oct	Air Transat
20 Sep - 02 Oct	Air Transat

Also check the deals for one-way flights from Toronto to Barcelona 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 return flights from Toronto to Barcelona in September from $683

Return flights