AirHint found the following cheapest return flights from Waterloo (YKF) to Warsaw (WAW) in December 2025 (see full year).
Return flights
| 01 Dec - 15 Dec | WestJet | ||
| 31 Dec - 24 Jan | Flair Airlines | ||
| 23 Dec - 09 Jan | WestJet | ||
| 11 Dec - 31 Dec | WestJet | ||
| 15 Dec - 31 Dec | WestJet | ||
| 23 Dec - 31 Dec | WestJet | ||
| 22 Dec - 02 Jan | WestJet |
Also check the deals for one-way flights from Waterloo to Warsaw in December.
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