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

Return flights

16 Mar - 25 Mar	TAP
18 Mar - 25 Mar	TAP
18 Mar - 08 Apr	TAP
06 Mar - 18 Mar	TAP
11 Mar - 25 Mar	TAP
04 Mar - 11 Mar	TAP
11 Mar - 18 Mar	TAP
15 Mar - 25 Mar	TAP
04 Mar - 17 Mar	TAP
18 Mar - 24 Mar	TAP
06 Mar - 17 Mar	TAP
25 Mar - 15 Apr	TAP
30 Mar - 06 Apr	TAP
22 Mar - 04 Apr	TAP
23 Mar - 02 Apr	TAP
29 Mar - 05 Apr	TAP
30 Mar - 12 Apr	TAP
20 Mar - 09 Apr	TAP
26 Mar - 02 Apr	Air France
27 Mar - 03 Apr	Air France

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

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 March from $462

Return flights