Cheapest return flights from Istanbul to Sofia in May from $109

Best time to book flights for Istanbul (IST) to Sofia (SOF) flights at AirHint

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

Return flights

15 May - 19 May Pegasus Airlines direct
15 May - 21 May Pegasus Airlines direct
19 May - 30 May Pegasus Airlines direct
18 May - 24 May Pegasus Airlines direct
24 May - 25 May Pegasus Airlines direct
11 May - 18 May Pegasus Airlines direct
16 May - 18 May Pegasus Airlines direct
09 May - 18 May Pegasus Airlines direct
12 May - 15 May Pegasus Airlines direct
02 May - 16 May Pegasus Airlines direct
31 May - 03 Jun Pegasus Airlines direct
31 May - 05 Jun Pegasus Airlines direct
24 May - 02 Jun Pegasus Airlines direct
29 May - 02 Jun Pegasus Airlines direct
28 May - 02 Jun Pegasus Airlines direct
29 May - 01 Jun Pegasus Airlines direct
25 May - 01 Jun Pegasus Airlines direct
31 May - 09 Jun Pegasus Airlines direct
31 May - 01 Jun Pegasus Airlines direct
31 May - 10 Jun Pegasus Airlines direct

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

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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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