AirHint found the following cheapest return flights from Montreal (YUL) to London (LGW) in January 2026 (see full year).

Return flights

21 Jan - 28 Jan	TAP
28 Jan - 04 Feb	TAP
07 Jan - 14 Jan	TAP
05 Jan - 21 Jan	TAP
14 Jan - 21 Jan	TAP
10 Jan - 24 Jan	Air Transat
05 Jan - 12 Jan	Air Transat
06 Jan - 13 Jan	Air Transat
08 Jan - 15 Jan	Air Transat
11 Jan - 18 Jan	Air Transat
12 Jan - 19 Jan	Air Transat
25 Jan - 01 Feb	Air Transat
26 Jan - 02 Feb	Air Transat
27 Jan - 03 Feb	Air Transat
29 Jan - 05 Feb	Air Transat
31 Jan - 07 Feb	Air Transat
30 Jan - 06 Feb	Air Transat

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

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 Montreal to London in January from 418€

Return flights