AirHint found the following cheapest return flights from Southampton (SOU) to Warsaw (WAW) in December 2025 (see full year).
Return flights
| 04 Dec - 10 Dec | Aer Lingus | ||
| 22 Dec - 10 Jan | easyJet | ||
| 20 Dec - 30 Dec | Loganair | ||
| 21 Dec - 30 Dec | Loganair | ||
| 23 Dec - 27 Dec | KLM | ||
| 23 Dec - 02 Jan | easyJet |
Also check the deals for one-way flights from Southampton to Warsaw in December.
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