AirHint found the following cheapest return flights from Bilbao (BIO) to Toronto (YYZ) in August 2025 (see full year).

Return flights

28 Aug - 11 Sep	Vueling Airlines
28 Aug - 09 Sep	Air France
28 Aug - 10 Sep	Air France
12 Aug - 19 Aug	Vueling Airlines
22 Aug - 25 Aug	Vueling Airlines
10 Aug - 20 Aug	Vueling Airlines
01 Aug - 10 Aug	KLM

Also check the deals for one-way flights from Bilbao to Toronto in August.

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 Bilbao to Toronto in August from $638

Return flights