AirHint found the following cheapest return flights from Toronto (YYZ) to Warsaw (WMI) in September 2025 (see full year).

Return flights

01 Sep - 09 Sep	TAP
30 Sep - 10 Oct	Aer Lingus
16 Sep - 15 Oct	TAP
04 Sep - 01 Oct	Flair Airlines
04 Sep - 30 Sep	Flair Airlines
20 Sep - 03 Oct	WestJet
27 Sep - 19 Oct	WestJet
01 Sep - 15 Oct	TAP
04 Sep - 25 Sep	TAP
21 Sep - 09 Oct	WestJet
24 Sep - 12 Oct	TAP
25 Sep - 12 Oct	WestJet
08 Sep - 15 Sep	WestJet
01 Sep - 06 Oct	TAP
11 Sep - 22 Sep	TAP
04 Sep - 27 Sep	Porter Airlines (Canada) Ltd
05 Sep - 12 Sep	Icelandair
07 Sep - 27 Sep	WestJet
02 Sep - 22 Sep	WestJet
15 Sep - 21 Sep	ITA Airways

Also check the deals for one-way flights from Toronto to Warsaw in September.

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 Toronto to Warsaw in September from 550€

Return flights