AirHint found the following cheapest return flights from London (LTN) to Montreal (YUL) in December 2025 (see full year).

Return flights

04 Dec - 08 Dec	easyJet
02 Dec - 09 Dec	easyJet
07 Dec - 11 Jan	easyJet
05 Dec - 08 Dec	easyJet
10 Dec - 17 Jan	easyJet
03 Dec - 07 Dec	easyJet
04 Dec - 07 Dec	easyJet
03 Dec - 09 Dec	easyJet
06 Dec - 15 Jan	easyJet
01 Dec - 08 Dec	easyJet
13 Dec - 30 Dec	easyJet
06 Dec - 08 Dec	easyJet
12 Dec - 11 Jan	easyJet
04 Dec - 10 Dec	easyJet
20 Dec - 10 Jan	easyJet
13 Dec - 10 Jan	easyJet
14 Dec - 10 Jan	easyJet
28 Dec - 18 Jan	easyJet
17 Dec - 07 Jan	easyJet
28 Dec - 16 Jan	easyJet

Also check the deals for one-way flights from London to Montreal 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 London to Montreal in December from $540

Return flights