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

Return flights

13 Dec - 16 Dec	Ryanair
10 Dec - 13 Dec	Ryanair
16 Dec - 17 Dec	Ryanair
06 Dec - 16 Dec	Ryanair
02 Dec - 09 Dec	Ryanair
06 Dec - 17 Dec	Ryanair
10 Dec - 15 Dec	Vueling Airlines
04 Dec - 06 Dec	Ryanair
13 Dec - 14 Dec	Ryanair
02 Dec - 04 Dec	Ryanair
16 Dec - 07 Jan	Vueling Airlines
13 Dec - 04 Jan	Ryanair
17 Dec - 08 Jan	Vueling Airlines
11 Dec - 04 Jan	Ryanair
12 Dec - 04 Jan	Vueling Airlines
23 Dec - 05 Jan	Ryanair
17 Dec - 06 Jan	Ryanair
12 Dec - 05 Jan	Vueling Airlines
17 Dec - 05 Jan	Ryanair
20 Dec - 05 Jan	Vueling Airlines

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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Cheapest return flights from Lisbon to Sofia in December from 89€

Return flights