Cheapest return flights from Istanbul to Sofia in October from 86€

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

Return flights

13 Oct - 15 Oct Pegasus Airlines direct
17 Oct - 19 Oct Pegasus Airlines direct
10 Oct - 12 Oct Pegasus Airlines direct
17 Oct - 20 Oct Pegasus Airlines direct
18 Oct - 20 Oct Pegasus Airlines direct
03 Oct - 07 Oct Pegasus Airlines direct
07 Oct - 10 Oct Pegasus Airlines direct
14 Oct - 17 Oct Pegasus Airlines direct
13 Oct - 21 Oct Pegasus Airlines direct
25 Oct - 28 Oct Turkish Airlines direct
24 Oct - 07 Nov SKY express

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

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.

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