AirHint found the following cheapest return flights from Milan (LIN) to Sofia (SOF) in December 2025 (see full year).

Return flights

05 Dec - 08 Dec	Lufthansa
27 Dec - 29 Dec	Austrian Airlines
25 Dec - 28 Dec	Austrian Airlines
05 Dec - 07 Dec	Lufthansa
06 Dec - 07 Dec	Lufthansa
04 Dec - 08 Dec	Austrian Airlines
06 Dec - 08 Dec	Lufthansa
31 Dec - 04 Jan	Austrian Airlines
24 Dec - 01 Jan	Austrian Airlines
07 Dec - 09 Dec	ITA Airways
31 Dec - 05 Jan	Austrian Airlines
26 Dec - 30 Dec	Austrian Airlines
30 Dec - 02 Jan	ITA Airways
31 Dec - 02 Jan	Austrian Airlines

Also check the deals for one-way flights from Milan to Sofia in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Milan to Sofia in December from 189€

Return flights