Cheapest return flights from London to Toronto in December from $421

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

Return flights

04 Dec - 09 Dec Aer Lingus
01 Dec - 06 Dec SWISS
01 Dec - 06 Dec Air Transat direct
07 Dec - 14 Dec Air Transat direct
04 Dec - 09 Dec Air Transat direct
06 Dec - 13 Dec Air Transat direct
07 Dec - 10 Dec Air Transat direct
01 Dec - 07 Dec Air Transat direct
09 Dec - 13 Dec Air Transat direct
01 Dec - 08 Dec Air Transat direct
31 Dec - 10 Jan Air Canada
11 Dec - 10 Jan Air Canada
27 Dec - 10 Jan Lufthansa
30 Dec - 08 Jan Air Canada
29 Dec - 11 Jan Lufthansa
29 Dec - 09 Jan Lufthansa
28 Dec - 25 Jan British Airways direct
11 Dec - 10 Jan British Airways direct
30 Dec - 08 Jan Lufthansa direct
31 Dec - 10 Jan Lufthansa direct

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

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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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