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

Return flights

26 Sep - 10 Oct	Air Transat
14 Sep - 01 Oct	Porter Airlines (Canada) Ltd
05 Sep - 21 Sep	Porter Airlines (Canada) Ltd
19 Sep - 07 Oct	Air Transat
22 Sep - 08 Oct	Air Transat
18 Sep - 27 Sep	Porter Airlines (Canada) Ltd
01 Sep - 27 Sep	Porter Airlines (Canada) Ltd
05 Sep - 17 Sep	Air Transat
25 Sep - 18 Oct	Porter Airlines (Canada) Ltd
09 Sep - 28 Sep	SWISS
24 Sep - 29 Sep	SWISS
18 Sep - 25 Sep	SWISS
20 Sep - 25 Sep	SWISS

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.

Book a cheap hotel in Bucharest

Cheap car rent in Bucharest

Cheapest return flights from Toronto to Bucharest in September from $739

Return flights