Cheapest return flights from Montreal to London in December from $620

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

Return flights

01 Dec - 08 Dec Lufthansa direct
03 Dec - 10 Dec British Airways direct
06 Dec - 13 Dec British Airways direct
08 Dec - 15 Dec British Airways direct
10 Dec - 17 Dec British Airways direct
04 Dec - 11 Dec Air Canada
09 Dec - 18 Dec Air Canada
05 Dec - 12 Dec Lufthansa direct
04 Dec - 11 Dec British Airways direct
14 Dec - 21 Dec British Airways direct
29 Dec - 11 Jan British Airways direct
31 Dec - 07 Jan British Airways direct
30 Dec - 06 Jan British Airways direct
20 Dec - 12 Jan British Airways direct
26 Dec - 02 Jan TAP
28 Dec - 04 Jan TAP
19 Dec - 12 Jan British Airways direct
19 Dec - 09 Jan British Airways direct
26 Dec - 03 Jan British Airways direct
26 Dec - 02 Jan British Airways direct

Also check the deals for one-way flights from Montreal to London 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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