Cheapest return flights from Istanbul to Sofia in December from $97

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

Return flights

08 Dec - 15 Dec Pegasus Airlines direct
08 Dec - 14 Dec Pegasus Airlines direct
11 Dec - 14 Dec Pegasus Airlines direct
29 Dec - 03 Jan Pegasus Airlines direct
29 Dec - 02 Jan Pegasus Airlines direct
14 Dec - 15 Dec Pegasus Airlines direct
15 Dec - 18 Dec Pegasus Airlines direct
21 Dec - 26 Dec Pegasus Airlines direct
13 Dec - 14 Dec Pegasus Airlines direct
15 Dec - 16 Dec Pegasus Airlines direct
13 Dec - 15 Dec Pegasus Airlines direct
26 Dec - 28 Dec Pegasus Airlines direct
22 Dec - 04 Jan Pegasus Airlines direct
25 Dec - 06 Jan Pegasus Airlines direct
29 Dec - 01 Jan Pegasus Airlines direct
27 Dec - 03 Jan Pegasus Airlines direct
31 Dec - 03 Jan Pegasus Airlines direct
31 Dec - 04 Jan Pegasus Airlines direct
31 Dec - 02 Jan Pegasus Airlines direct
30 Dec - 01 Jan Turkish Airlines direct

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

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