AirHint found the following cheapest return flights from Portland (PDX) to Milan (LIN) in December 2025 (see full year).
Return flights
| 23 Dec - 05 Jan | Frontier Airlines | ||
| 24 Dec - 02 Jan | British Airways | ||
| 21 Dec - 02 Jan | KLM | ||
| 20 Dec - 02 Jan | Brussels Airlines |
Also check the deals for one-way flights from Portland to Milan in December.
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