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

Return flights

22 Dec - 29 Dec	Air Serbia
16 Dec - 22 Dec	Air Serbia
21 Dec - 29 Dec	Air Serbia
26 Dec - 05 Jan	Air Serbia
22 Dec - 05 Jan	Air Serbia
14 Dec - 03 Jan	Air Serbia
18 Dec - 20 Jan	easyJet
19 Dec - 22 Dec	Air Serbia
15 Dec - 28 Dec	Air Serbia
25 Dec - 03 Jan	Air Serbia
18 Dec - 03 Jan	easyJet
25 Dec - 28 Dec	Austrian Airlines
19 Dec - 14 Jan	Air Serbia
18 Dec - 04 Jan	Vueling Airlines
23 Dec - 03 Jan	transavia
20 Dec - 03 Jan	Lufthansa
10 Dec - 28 Dec	SKY express

Also check the deals for one-way flights from Amsterdam 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 Amsterdam to Sofia in December from 194€

Return flights