AirHint found the following cheapest one-way flights from Istanbul (SAW) to Sofia (SOF) in December 2025 (see full year).

One-Way flights

06 Dec	Pegasus Airlines	direct
11 Dec	Pegasus Airlines	direct
16 Dec	Pegasus Airlines	direct
18 Dec	Pegasus Airlines	direct
07 Dec	Pegasus Airlines	direct
19 Dec	Pegasus Airlines
26 Dec	Pegasus Airlines	direct
27 Dec	Pegasus Airlines	direct
19 Dec	Pegasus Airlines	direct
03 Dec	Pegasus Airlines

Also check the deals for return flights from Istanbul 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 one-way flights from Istanbul to Sofia in December from 44€

One-Way flights