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

Return flights

03 Dec - 10 Dec	Aer Lingus
05 Dec - 10 Dec	Icelandair
01 Dec - 09 Dec	Icelandair
04 Dec - 09 Dec	Icelandair
31 Dec - 11 Jan	Aer Lingus
01 Dec - 16 Dec	TAP
03 Dec - 27 Dec	Aer Lingus
02 Dec - 27 Dec	Aer Lingus
30 Dec - 10 Jan	Icelandair
11 Dec - 16 Dec	Icelandair
30 Dec - 13 Jan	British Airways
12 Dec - 16 Dec	Aer Lingus
15 Dec - 10 Jan	Icelandair
27 Dec - 17 Jan	Icelandair
13 Dec - 28 Dec	Aer Lingus
24 Dec - 11 Jan	Air Transat	direct
31 Dec - 11 Jan	Air Transat	direct
17 Dec - 11 Jan	Air Transat	direct
27 Dec - 08 Jan	Icelandair
21 Dec - 25 Jan	Aer Lingus

Also check the deals for one-way flights from Toronto to Glasgow in December.

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 Glasgow in December from 488€

Return flights