Cheapest return flights from Istanbul to Sofia in October from $97

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

Return flights

23 Oct - 28 Oct Pegasus Airlines direct
31 Oct - 02 Nov Pegasus Airlines direct
31 Oct - 03 Nov Pegasus Airlines direct
23 Oct - 26 Oct Pegasus Airlines direct
24 Oct - 31 Oct Pegasus Airlines direct
23 Oct - 24 Oct Pegasus Airlines direct
22 Oct - 28 Oct Pegasus Airlines direct
22 Oct - 31 Oct Pegasus Airlines direct
22 Oct - 27 Oct Pegasus Airlines direct
22 Oct - 05 Nov Pegasus Airlines direct
28 Oct - 31 Oct Pegasus Airlines direct
28 Oct - 04 Nov Pegasus Airlines direct
24 Oct - 28 Oct Pegasus Airlines direct
24 Oct - 26 Oct Pegasus Airlines direct
24 Oct - 01 Nov Pegasus Airlines direct
28 Oct - 11 Nov Pegasus Airlines direct
30 Oct - 02 Nov Pegasus Airlines direct
30 Oct - 06 Nov Pegasus Airlines direct
26 Oct - 02 Nov Fly One
26 Oct - 01 Nov Pegasus Airlines

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

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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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