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

Return flights

26 Sep - 06 Oct	Air Transat	direct
16 Sep - 30 Sep	Air Transat	direct
18 Sep - 27 Sep	Air Transat	direct
12 Sep - 21 Sep	Air Transat	direct
23 Sep - 30 Sep	Air Transat	direct
27 Sep - 03 Oct	Air Transat	direct
04 Sep - 08 Sep	Air Transat	direct
30 Sep - 07 Oct	Air Transat	direct
17 Sep - 21 Sep	Air Transat	direct
26 Sep - 30 Sep	Air Transat	direct
17 Sep - 24 Sep	Ryanair
02 Sep - 23 Sep	Air Transat	direct
03 Sep - 13 Sep	Air Transat	direct
24 Sep - 01 Oct	Ryanair
20 Sep - 04 Oct	Ryanair

Also check the deals for one-way flights from Glasgow to Toronto 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 Glasgow to Toronto in September from $455

Return flights