AirHint found the following cheapest return flights from Istanbul (IST) to Sofia (SOF) in July 2026 (see full year).

Return flights

02 Jul - 06 Jul	Pegasus Airlines	direct
01 Jul - 04 Jul	Pegasus Airlines	direct
05 Jul - 10 Jul	SKY express
05 Jul - 19 Jul	SKY express
03 Jul - 10 Jul	SKY express
31 Jul - 14 Aug	SKY express
09 Jul - 16 Jul	Air Serbia
03 Jul - 19 Jul	SKY express
03 Jul - 05 Jul	SKY express
31 Jul - 09 Aug	SKY express
31 Jul - 07 Aug	SKY express
31 Jul - 02 Aug	SKY express
05 Jul - 24 Jul	SKY express
19 Jul - 09 Aug	SKY express
19 Jul - 07 Aug	SKY express
19 Jul - 02 Aug	SKY express
09 Jul - 16 Jul	Turkish Airlines	direct

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

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 July from 106€

Return flights