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

Return flights

31 Aug - 07 Sep	TAP
21 Aug - 28 Aug	TAP
16 Aug - 23 Aug	TAP
24 Aug - 31 Aug	TAP
19 Aug - 26 Aug	TAP
23 Aug - 30 Aug	TAP
20 Aug - 27 Aug	TAP
27 Aug - 03 Sep	TAP
26 Aug - 02 Sep	TAP
04 Aug - 11 Aug	Air Transat	direct
17 Aug - 24 Aug	TAP
28 Aug - 04 Sep	TAP
30 Aug - 06 Sep	TAP
05 Aug - 12 Aug	Air Transat	direct
03 Aug - 10 Aug	TAP
25 Aug - 01 Sep	Air France
29 Aug - 05 Sep	Royal Air Maroc

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

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 August from 623€

Return flights