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

Return flights

28 Aug - 03 Sep	Flair Airlines
20 Aug - 13 Sep	Porter Airlines (Canada) Ltd
21 Aug - 02 Sep	Flair Airlines
22 Aug - 29 Aug	Scandinavian Airlines
19 Aug - 13 Sep	Porter Airlines (Canada) Ltd
24 Aug - 29 Aug	WestJet
21 Aug - 28 Aug	Flair Airlines
19 Aug - 25 Aug	Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Toronto to Sofia 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 Toronto to Sofia in August from 788€

Return flights