Cheapest return flights from Istanbul to Sofia in October from 77€

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

Return flights

14 Oct - 17 Oct Pegasus Airlines direct
09 Oct - 11 Oct Pegasus Airlines direct
08 Oct - 10 Oct Pegasus Airlines direct
08 Oct - 09 Oct Pegasus Airlines direct
17 Oct - 19 Oct Pegasus Airlines direct
23 Oct - 30 Oct Pegasus Airlines direct
21 Oct - 23 Oct Pegasus Airlines direct
23 Oct - 26 Oct Pegasus Airlines direct
03 Oct - 06 Oct Pegasus Airlines direct
22 Oct - 30 Oct Pegasus Airlines direct
31 Oct - 02 Nov Pegasus Airlines direct
28 Oct - 01 Nov Pegasus Airlines
30 Oct - 02 Nov Pegasus Airlines direct
30 Oct - 01 Nov Pegasus Airlines direct
29 Oct - 02 Nov Turkish Airlines direct
25 Oct - 01 Nov Pegasus Airlines direct
28 Oct - 01 Nov Turkish Airlines direct
24 Oct - 02 Nov SKY express
26 Oct - 14 Nov SKY express
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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

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