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

Return flights

23 Sep - 27 Sep	Wizz Air
29 Sep - 03 Oct	Ryanair
30 Sep - 02 Oct	Ryanair
23 Sep - 26 Sep	Wizz Air
16 Sep - 17 Sep	Wizz Air
24 Sep - 27 Sep	Wizz Air
24 Sep - 28 Sep	Wizz Air
17 Sep - 20 Sep	Ryanair
11 Sep - 16 Sep	Ryanair
16 Sep - 19 Sep	Wizz Air
11 Sep - 18 Sep	Ryanair
09 Sep - 12 Sep	Ryanair
24 Sep - 08 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 112€

Return flights