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

Return flights

19 Jul - 02 Aug	WestJet
28 Jul - 04 Aug	Air Transat
13 Jul - 20 Jul	Air Transat
29 Jul - 05 Aug	Air Transat
14 Jul - 21 Jul	Air Transat
06 Jul - 17 Jul	Air Transat
21 Jul - 28 Jul	Air Transat
20 Jul - 28 Jul	Air Transat
15 Jul - 22 Jul	Air Transat
20 Jul - 27 Jul	Air Transat
09 Jul - 16 Jul	Air Transat
06 Jul - 13 Jul	Air Transat
30 Jul - 06 Aug	Air Transat
22 Jul - 29 Jul	Air Transat
27 Jul - 03 Aug	Air Transat
26 Jul - 02 Aug	Air Transat
28 Jul - 21 Aug	Air Transat
17 Jul - 02 Aug	Air Transat
24 Jul - 07 Aug	Air Transat
31 Jul - 07 Aug	Air Transat

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

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 July from $874

Return flights