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

Return flights

22 Dec - 29 Dec	Ryanair	direct
28 Dec - 29 Dec	Ryanair	direct
22 Dec - 26 Dec	Ryanair	direct
26 Dec - 29 Dec	Ryanair	direct
22 Dec - 02 Jan	Ryanair	direct
28 Dec - 02 Jan	Ryanair	direct
12 Dec - 14 Dec	Ryanair	direct
26 Dec - 02 Jan	Ryanair	direct
11 Dec - 14 Dec	Air Serbia
12 Dec - 29 Dec	Ryanair	direct
12 Dec - 26 Dec	Ryanair	direct
12 Dec - 15 Dec	Ryanair	direct

Also check the deals for one-way flights from Sofia to Budapest 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 Budapest in December from $115

Return flights