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

Return flights

18 Nov - 16 Dec	Pegasus Airlines	direct
03 Nov - 05 Nov	Pegasus Airlines
06 Nov - 11 Nov	Pegasus Airlines
08 Nov - 15 Nov	Pegasus Airlines
11 Nov - 25 Nov	Pegasus Airlines
07 Nov - 14 Nov	Pegasus Airlines
01 Nov - 07 Nov	Pegasus Airlines	direct
07 Nov - 14 Nov	Pegasus Airlines	direct
10 Nov - 14 Nov	Pegasus Airlines	direct
14 Nov - 17 Nov	Pegasus Airlines	direct
15 Nov - 17 Nov	Pegasus Airlines	direct

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.

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Cheapest return flights from Istanbul to Sofia in November from $110

Return flights