Cheapest return flights from Istanbul to Sofia in October from $91

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

Return flights

01 Oct - 08 Nov Pegasus Airlines
08 Oct - 09 Oct Pegasus Airlines direct
01 Oct - 04 Oct Pegasus Airlines direct
02 Oct - 05 Oct Pegasus Airlines direct
01 Oct - 07 Oct Pegasus Airlines direct
07 Oct - 14 Oct Pegasus Airlines direct
05 Oct - 12 Oct Pegasus Airlines direct
09 Oct - 11 Oct Pegasus Airlines direct
08 Oct - 15 Oct Pegasus Airlines direct
03 Oct - 05 Oct Pegasus Airlines direct
03 Oct - 19 Oct Pegasus Airlines direct
21 Oct - 03 Nov Pegasus Airlines direct
30 Oct - 11 Nov Pegasus Airlines
20 Oct - 01 Nov Pegasus Airlines
01 Oct - 08 Nov Pegasus Airlines direct
30 Oct - 11 Nov Turkish Airlines direct
20 Oct - 01 Nov Turkish Airlines direct
17 Oct - 02 Nov SKY express
24 Oct - 02 Nov SKY express
24 Oct - 09 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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