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

Return flights

11 May - 18 May	TAP
04 May - 11 May	TAP
18 May - 25 May	TAP
03 May - 10 May	TAP
13 May - 20 May	TAP
06 May - 13 May	TAP
27 May - 03 Jun	TAP
24 May - 31 May	TAP
25 May - 01 Jun	TAP
17 May - 24 May	TAP
10 May - 17 May	TAP
15 May - 22 May	TAP
22 May - 18 Jun	TAP
31 May - 07 Jun	TAP
26 May - 02 Jun	Air Transat
29 May - 05 Jun	Royal Air Maroc
28 May - 04 Jun	Royal Air Maroc
30 May - 06 Jun	Royal Air Maroc

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

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 May from 568€

Return flights