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

Return flights

24 Dec - 31 Dec	Ryanair
31 Dec - 05 Jan	Ryanair
24 Dec - 01 Jan	Ryanair
23 Dec - 31 Dec	Ryanair
29 Dec - 05 Jan	Ryanair
27 Dec - 31 Dec	Wizz Air
24 Dec - 03 Jan	Ryanair
31 Dec - 04 Jan	Ryanair
26 Dec - 28 Dec	Vueling Airlines
31 Dec - 02 Jan	Ryanair
30 Dec - 02 Jan	Ryanair
28 Dec - 02 Jan	Ryanair
29 Dec - 04 Jan	Ryanair
28 Dec - 03 Jan	Ryanair
22 Dec - 26 Dec	Ryanair
20 Dec - 27 Dec	Wizz Air
23 Dec - 26 Dec	Ryanair
28 Dec - 31 Dec	SKY express

Also check the deals for one-way flights from Lisbon 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 Lisbon to Sofia in December from 124€

Return flights