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

Return flights

09 Sep - 24 Sep	Air Transat
07 Sep - 05 Oct	Air Transat
27 Sep - 10 Oct	Condor
01 Sep - 24 Sep	Air Transat
27 Sep - 10 Oct	Lufthansa	direct
01 Sep - 16 Sep	Icelandair
06 Sep - 20 Sep	TAP
03 Sep - 03 Oct	TAP
04 Sep - 20 Sep	TAP
03 Sep - 03 Oct	Air Canada	direct
03 Sep - 13 Sep	Azores Airlines
09 Sep - 24 Sep	Lufthansa	direct
07 Sep - 05 Oct	Lufthansa	direct
01 Sep - 24 Sep	Lufthansa	direct
01 Sep - 16 Sep	Lufthansa	direct
06 Sep - 20 Sep	Lufthansa	direct

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 579€

Return flights