AirHint found the following cheapest return flights from Sofia (SOF) to Prague (PRG) in September 2025 (see full year).

Return flights

30 Sep - 09 Oct	Wizz Air
29 Sep - 02 Oct	Wizz Air
30 Sep - 03 Oct	Wizz Air
20 Sep - 24 Sep	Air Serbia
11 Sep - 18 Sep	Wizz Air
26 Sep - 30 Sep	Wizz Air
28 Sep - 30 Sep	Wizz Air
07 Sep - 14 Sep	Air Serbia
28 Sep - 02 Oct	Wizz Air
25 Sep - 30 Sep	Wizz Air
09 Sep - 23 Sep	Wizz Air
04 Sep - 11 Sep	Wizz Air
12 Sep - 16 Sep	Wizz Air
14 Sep - 16 Sep	Wizz Air
24 Sep - 01 Oct	SKY express
17 Sep - 01 Oct	SKY express

Also check the deals for one-way flights from Sofia to Prague in September.

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 Sofia to Prague in September from 118€

Return flights