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

Return flights

15 Dec - 17 Dec	Ryanair
16 Dec - 29 Dec	Wizz Air
10 Dec - 14 Jan	Wizz Air
14 Dec - 17 Dec	Ryanair
02 Dec - 10 Dec	Wizz Air
02 Dec - 16 Dec	Ryanair
14 Dec - 13 Jan	Ryanair
03 Dec - 09 Dec	Ryanair
09 Dec - 16 Dec	Ryanair
12 Dec - 17 Dec	Ryanair
13 Dec - 15 Dec	Ryanair
10 Dec - 14 Dec	Ryanair
12 Dec - 05 Jan	Wizz Air
17 Dec - 01 Jan	Wizz Air
14 Dec - 04 Jan	Ryanair
30 Dec - 06 Jan	Ryanair
30 Dec - 07 Jan	Ryanair
24 Dec - 01 Jan	Ryanair
23 Dec - 04 Jan	Ryanair
31 Dec - 02 Jan	Ryanair

Also check the deals for one-way flights from Sofia to Lisbon 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 Sofia to Lisbon in December from $112

Return flights