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

Return flights

29 Sep - 21 Oct	Porter Airlines (Canada) Ltd
28 Sep - 05 Oct	WestJet
30 Sep - 07 Oct	Air Transat
27 Sep - 04 Oct	Air Transat
30 Sep - 30 Oct	WestJet
21 Sep - 21 Oct	WestJet
30 Sep - 15 Oct	WestJet
30 Sep - 31 Oct	WestJet
23 Sep - 08 Oct	Porter Airlines (Canada) Ltd
21 Sep - 30 Oct	WestJet
23 Sep - 30 Sep	Porter Airlines (Canada) Ltd
21 Sep - 28 Sep	WestJet
19 Sep - 24 Sep	WestJet
18 Sep - 25 Sep	Air Transat
17 Sep - 24 Sep	WestJet
17 Sep - 25 Sep	WestJet
19 Sep - 26 Sep	WestJet
22 Sep - 29 Sep	WestJet
21 Sep - 22 Sep	Emirates

Also check the deals for one-way flights from Toronto to Tehran 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 Tehran in September from 821€

Return flights