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

Return flights

14 Dec - 21 Dec	Ryanair
10 Dec - 17 Dec	Wizz Air
11 Dec - 14 Dec	Ryanair
15 Dec - 31 Dec	Wizz Air
09 Dec - 21 Dec	Wizz Air
19 Dec - 30 Dec	Wizz Air
20 Dec - 04 Jan	Ryanair
20 Dec - 02 Jan	Ryanair
20 Dec - 30 Dec	Ryanair
08 Dec - 21 Dec	Wizz Air
08 Dec - 19 Dec	Wizz Air
25 Dec - 11 Jan	KLM
25 Dec - 17 Jan	KLM

Also check the deals for one-way flights from Sandefjord 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 Sandefjord to Sofia in December from 119€

Return flights