Cheapest return flights from Montreal to London in May from $503

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

Return flights

05 May - 01 Jun WestJet
27 May - 01 Jun WestJet
05 May - 13 May Air Transat
19 May - 09 Jun WestJet
17 May - 26 May WestJet
31 May - 09 Jun WestJet
05 May - 10 May Air Transat
20 May - 03 Jun FrenchBee
18 May - 27 May FrenchBee
28 May - 01 Jun WestJet
06 May - 18 May WestJet
19 May - 26 May WestJet
08 May - 27 May FrenchBee
05 May - 27 May Air Transat
08 May - 18 May Air Transat
28 May - 04 Jun WestJet
27 May - 17 Jun WestJet
27 May - 12 Jun WestJet
18 May - 26 May FrenchBee
19 May - 02 Jun WestJet

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

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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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