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

Return flights

11 Nov - 17 Nov	Pegasus Airlines
13 Nov - 16 Nov	Pegasus Airlines	direct
07 Nov - 16 Nov	Pegasus Airlines	direct
07 Nov - 14 Nov	Air Serbia
14 Nov - 16 Nov	SKY express
12 Nov - 14 Nov	Air Serbia
07 Nov - 14 Nov	Turkish Airlines	direct
12 Nov - 14 Nov	Turkish Airlines	direct
11 Nov - 17 Nov	Turkish Airlines	direct
30 Nov - 19 Dec	SKY express

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

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 Istanbul to Sofia in November from 120€

Return flights