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

Return flights

28 Sep - 08 Oct	Finnair
29 Sep - 08 Oct	Finnair
14 Sep - 22 Sep	WestJet
22 Sep - 03 Oct	Air Transat
30 Sep - 08 Oct	Air Transat
18 Sep - 22 Sep	Icelandair
27 Sep - 11 Oct	WestJet
02 Sep - 08 Sep	Icelandair
17 Sep - 22 Sep	Icelandair
14 Sep - 23 Sep	WestJet
23 Sep - 03 Oct	Air Transat
15 Sep - 25 Sep	Air Transat
25 Sep - 25 Oct	Icelandair
16 Sep - 15 Oct	Icelandair
18 Sep - 26 Sep	Icelandair
05 Sep - 13 Sep	Icelandair
05 Sep - 12 Sep	Icelandair
04 Sep - 13 Sep	Icelandair
29 Sep - 09 Oct	Icelandair
21 Sep - 16 Oct	WestJet

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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona

Cheapest return flights from Toronto to Barcelona in September from 344€

Return flights