AirHint found the following cheapest return flights from Toronto (YYZ) to Barcelona (BCN) in September 2025 (see full year).

Return flights

10 Sep - 08 Oct	WestJet
16 Sep - 23 Sep	WestJet
10 Sep - 07 Oct	WestJet
09 Sep - 18 Sep	WestJet
10 Sep - 17 Sep	WestJet
10 Sep - 18 Sep	WestJet
18 Sep - 25 Sep	WestJet
23 Sep - 30 Sep	Icelandair
10 Sep - 01 Oct	WestJet
08 Sep - 15 Sep	Air Transat
24 Sep - 01 Oct	Icelandair
27 Sep - 04 Oct	Icelandair
15 Sep - 22 Sep	Air Transat
22 Sep - 29 Sep	Porter Airlines (Canada) Ltd
10 Sep - 23 Sep	WestJet
16 Sep - 01 Oct	SWISS
26 Sep - 03 Oct	Air Canada
28 Sep - 05 Oct	WestJet
24 Sep - 15 Oct	Icelandair
24 Sep - 17 Oct	Icelandair

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 312€

Return flights