AirHint found the following cheapest return flights from Southampton (SOU) to Milano (MXP) in December 2025 (see full year).
Return flights
| 19 Dec - 20 Dec | easyJet | ||
| 31 Dec - 01 Jan | Aer Lingus | ||
| 29 Dec - 01 Jan | easyJet | ||
| 27 Dec - 03 Jan | KLM |
Also check the deals for one-way flights from Southampton to Milano in December.
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