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

Return flights

29 Sep - 08 Oct	Porter Airlines (Canada) Ltd
29 Sep - 09 Oct	Porter Airlines (Canada) Ltd
29 Sep - 10 Oct	Porter Airlines (Canada) Ltd
29 Sep - 25 Oct	Porter Airlines (Canada) Ltd
28 Sep - 18 Oct	SWISS
22 Sep - 08 Oct	SWISS
24 Sep - 29 Sep	Air France
26 Sep - 10 Oct	Porter Airlines (Canada) Ltd
26 Sep - 18 Oct	Lufthansa
23 Sep - 30 Sep	Air Canada
26 Sep - 05 Oct	Porter Airlines (Canada) Ltd
22 Sep - 18 Oct	Air Canada
20 Sep - 27 Sep	Air France
21 Sep - 28 Sep	Air Transat
17 Sep - 25 Sep	WestJet

Also check the deals for one-way flights from Toronto to Bucharest 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 Bucharest in September from $613

Return flights