Cheapest one-way flights from Istanbul to Sofia in December from $53

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

One-Way flights

18 Dec Pegasus Airlines direct
29 Dec Pegasus Airlines
19 Dec Pegasus Airlines direct
01 Dec Pegasus Airlines
01 Dec Pegasus Airlines direct
27 Dec Pegasus Airlines
29 Dec Pegasus Airlines direct
07 Dec SKY express
27 Dec Turkish Airlines direct
21 Dec SKY express

Also check the deals for return flights from Istanbul to Sofia in December.

Skyscanner

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

Feel free to contact us with any feedback or request another flight research.