Cheapest return flights from Istanbul to Sofia in May from 99€

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

Return flights

02 May - 09 May Pegasus Airlines direct
01 May - 05 May Pegasus Airlines direct
01 May - 10 May Pegasus Airlines direct
07 May - 11 May Pegasus Airlines direct
01 May - 03 May Pegasus Airlines direct
11 May - 17 May Pegasus Airlines direct
07 May - 08 May Pegasus Airlines direct
01 May - 02 May Pegasus Airlines direct
16 May - 21 May Pegasus Airlines direct
27 May - 31 May Pegasus Airlines direct
26 May - 02 Jun Pegasus Airlines direct
29 May - 01 Jun Pegasus Airlines direct
29 May - 05 Jun SKY express
17 May - 05 Jun SKY express
24 May - 05 Jun SKY express
31 May - 19 Jun SKY express
22 May - 05 Jun SKY express

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

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