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

Return flights

23 May - 30 May	SWISS
04 May - 11 May	Air Canada
05 May - 12 May	Air Canada
19 May - 26 May	Air Canada
06 May - 13 May	Air Canada
12 May - 19 May	Air Canada
20 May - 27 May	Air Canada
03 May - 10 May	Air Canada
13 May - 20 May	Air Canada
21 May - 28 May	Air Canada
30 May - 06 Jun	SWISS
26 May - 02 Jun	Air Canada
25 May - 01 Jun	Air Canada
27 May - 03 Jun	Brussels Airlines
28 May - 04 Jun	Air France
29 May - 05 Jun	FrenchBee
31 May - 07 Jun	Lufthansa

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 $679

Return flights