Cheapest return flights from Boston to Sofia in December from 280€

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

Return flights

31 Dec - 20 Jan Lufthansa
31 Dec - 13 Jan Lufthansa
31 Dec - 12 Jan Lufthansa
30 Dec - 13 Jan Austrian Airlines
31 Dec - 24 Jan Lufthansa
31 Dec - 21 Jan Lufthansa
29 Dec - 13 Jan KLM
25 Dec - 18 Jan KLM
25 Dec - 08 Jan KLM
17 Dec - 19 Jan Brussels Airlines
15 Dec - 29 Dec Aer Lingus

Also check the deals for one-way flights from Boston to Sofia in December.

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