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

Return flights

13 Dec - 17 Dec	Aegean Airlines
09 Dec - 11 Dec	Aegean Airlines
03 Dec - 10 Dec	Aegean Airlines
21 Dec - 25 Dec	Aegean Airlines
10 Dec - 11 Dec	Aegean Airlines
12 Dec - 13 Dec	Aegean Airlines
12 Dec - 14 Dec	Aegean Airlines
10 Dec - 12 Dec	Aegean Airlines
04 Dec - 07 Dec	Aegean Airlines
04 Dec - 08 Dec	Aegean Airlines
31 Dec - 04 Jan	Aegean Airlines
30 Dec - 03 Jan	Aegean Airlines
29 Dec - 02 Jan	Aegean Airlines
29 Dec - 03 Jan	Aegean Airlines
24 Dec - 02 Jan	Aegean Airlines

Also check the deals for one-way flights from Heraklion 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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Cheapest return flights from Heraklion to Sofia in December from $123

Return flights