AirHint found the following cheapest return flights from Ottawa (YOW) to Warsaw (WAW) in October 2025 (see full year).
Return flights
| 28 Oct - 22 Nov | Porter Airlines (Canada) Ltd | ||
| 25 Oct - 21 Nov | Porter Airlines (Canada) Ltd | ||
| 21 Oct - 15 Nov | WestJet | ||
| 21 Oct - 29 Oct | WestJet |
Also check the deals for one-way flights from Ottawa to Warsaw in October.
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