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

Return flights

20 May - 27 May	Air Transat
26 May - 02 Jun	Air Transat
13 May - 20 May	Air Transat
19 May - 26 May	Air Transat
06 May - 13 May	Porter Airlines (Canada) Ltd
29 May - 08 Jun	FrenchBee
05 May - 12 May	Air Transat
12 May - 19 May	Air Transat
04 May - 11 May	FrenchBee
10 May - 17 May	TAP
18 May - 25 May	FrenchBee
29 May - 05 Jun	FrenchBee
22 May - 29 May	FrenchBee
27 May - 03 Jun	Air Transat
25 May - 01 Jun	Porter Airlines (Canada) Ltd
28 May - 04 Jun	Azores Airlines
30 May - 06 Jun	Air Transat
30 May - 13 Jun	Air Transat
31 May - 07 Jun	Aegean Airlines

Also check the deals for one-way flights from Montreal to Warsaw 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 Warsaw in May from 623€

Return flights