AirHint found the following cheapest return flights from Hamilton (YHM) to Warsaw (WAW) in September 2025 (see full year).

Return flights

19 Sep - 11 Oct	Porter Airlines (Canada) Ltd
20 Sep - 11 Oct	Porter Airlines (Canada) Ltd
04 Sep - 27 Sep	Porter Airlines (Canada) Ltd
30 Sep - 19 Oct	WestJet
30 Sep - 20 Oct	WestJet
16 Sep - 14 Oct	WestJet
16 Sep - 15 Oct	WestJet
22 Sep - 12 Oct	WestJet
28 Sep - 18 Oct	WestJet
19 Sep - 05 Oct	WestJet
29 Sep - 19 Oct	WestJet
11 Sep - 22 Sep	WestJet
10 Sep - 22 Sep	WestJet
03 Sep - 14 Sep	WestJet
12 Sep - 14 Sep	WestJet
10 Sep - 21 Sep	WestJet
19 Sep - 23 Sep	WestJet
19 Sep - 22 Sep	WestJet
03 Sep - 15 Sep	WestJet
06 Sep - 10 Sep	WestJet

Also check the deals for one-way flights from Hamilton 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 Hamilton to Warsaw in September from $900

Return flights