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

Return flights

03 Dec - 10 Dec	Greater Bay Airlines
09 Dec - 17 Dec	Emirates
20 Dec - 01 Jan	Hainan Airlines
16 Dec - 29 Dec	Juneyao Airlines
13 Dec - 20 Dec	HK Express
24 Dec - 04 Jan	Air Cambodia
12 Dec - 19 Dec	Air China
19 Dec - 02 Jan	Juneyao Airlines
12 Dec - 27 Dec	Air China
06 Dec - 21 Dec	China Eastern
20 Dec - 02 Jan	Hainan Airlines
28 Dec - 29 Dec	Turkish Airlines
17 Dec - 21 Dec	HK Express

Also check the deals for one-way flights from Hong Kong 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 Hong Kong to Sofia in December from 625€

Return flights