Cheapest return flights from Montreal to London in May from $709

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

Return flights

04 May - 11 May British Airways direct
05 May - 12 May British Airways direct
26 May - 02 Jun British Airways direct
18 May - 25 May TAP
11 May - 18 May TAP
13 May - 20 May TAP
25 May - 01 Jun TAP
27 May - 03 Jun TAP
12 May - 19 May British Airways direct
11 May - 18 May British Airways direct
13 May - 20 May British Airways direct
19 May - 26 May British Airways direct
21 May - 28 May British Airways direct
27 May - 03 Jun British Airways direct
25 May - 01 Jun Finnair direct
28 May - 04 Jun British Airways direct
30 May - 06 Jun Lufthansa direct
29 May - 05 Jun Lufthansa direct
31 May - 07 Jun Lufthansa direct

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

Skyscanner

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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