Cheapest one-way flights from Istanbul to Sofia in April from $103

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

One-Way flights

08 Apr Aegean Airlines
30 Apr Air Serbia
23 Apr Air Serbia
24 Apr Air Serbia
03 Apr Air Serbia
13 Apr Aegean Airlines
10 Apr SKY express
08 Apr Turkish Airlines direct
03 Apr Turkish Airlines direct
23 Apr Turkish Airlines direct

Also check the deals for return flights from Istanbul to Sofia in April.

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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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