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

Return flights

17 Sep - 24 Sep	Icelandair
01 Sep - 16 Sep	TAP
16 Sep - 23 Sep	Air Canada
11 Sep - 15 Sep	Air Canada
25 Sep - 04 Oct	Iberia
26 Sep - 25 Oct	Iberia
26 Sep - 01 Oct	Iberia
25 Sep - 05 Oct	Iberia
25 Sep - 09 Oct	Iberia
21 Sep - 02 Oct	Iberia
24 Sep - 02 Oct	Iberia
28 Sep - 11 Oct	Iberia
24 Sep - 08 Oct	Iberia
27 Sep - 08 Oct	Iberia
11 Sep - 15 Sep	Air Canada	direct
15 Sep - 24 Sep	Icelandair
11 Sep - 16 Sep	WestJet
07 Sep - 14 Sep	Flair Airlines
08 Sep - 16 Sep	WestJet
01 Sep - 09 Sep	TAP

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 422€

Return flights