Cheapest return flights from Istanbul to Sofia in April from $104

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

Return flights

03 Apr - 06 Apr Pegasus Airlines direct
23 Apr - 26 Apr Pegasus Airlines direct
03 Apr - 17 Apr SKY express
03 Apr - 10 Apr SKY express
17 Apr - 26 Apr SKY express
03 Apr - 12 Apr SKY express
12 Apr - 17 Apr SKY express
12 Apr - 26 Apr SKY express
26 Apr - 08 May SKY express
17 Apr - 03 May SKY express
17 Apr - 01 May SKY express
19 Apr - 26 Apr SKY express
19 Apr - 08 May SKY express
26 Apr - 03 May SKY express
12 Apr - 03 May SKY express
12 Apr - 01 May SKY express
19 Apr - 03 May SKY express
19 Apr - 01 May SKY express

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

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