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

Return flights

25 May - 18 Jun	Air Canada
11 May - 11 Jun	Air Canada
18 May - 10 Jun	Air Canada
24 May - 18 Jun	Air Canada
19 May - 18 Jun	Air Canada
27 May - 12 Jun	Air Canada
25 May - 14 Jun	Lufthansa
19 May - 09 Jun	Air Canada
19 May - 10 Jun	Air Canada
29 May - 07 Jun	SWISS
06 May - 27 May	WestJet
25 May - 30 May	WestJet
25 May - 31 May	WestJet

Also check the deals for one-way flights from Calgary 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 Calgary to Warsaw in May from $656

Return flights