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

Return flights

01 Sep - 09 Sep	Air Transat
17 Sep - 22 Sep	WestJet
28 Sep - 09 Oct	Aer Lingus
14 Sep - 21 Sep	Air Transat
14 Sep - 16 Sep	Air Transat
01 Sep - 17 Oct	Lufthansa
10 Sep - 17 Sep	WestJet
15 Sep - 22 Sep	Porter Airlines (Canada) Ltd
25 Sep - 09 Oct	Aer Lingus
30 Sep - 08 Oct	Air Transat
28 Sep - 12 Oct	Air Transat
18 Sep - 26 Sep	Icelandair
14 Sep - 26 Sep	Icelandair
05 Sep - 12 Sep	Icelandair
30 Sep - 06 Oct	Aer Lingus
29 Sep - 09 Oct	Aer Lingus
13 Sep - 22 Sep	Air Transat
22 Sep - 03 Oct	Iberia
14 Sep - 14 Oct	Iberia
26 Sep - 01 Oct	Iberia

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 $472

Return flights