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

Return flights

20 Aug - 17 Sep	Air Serbia
16 Aug - 20 Aug	Ryanair
16 Aug - 24 Aug	Air Serbia
26 Aug - 28 Aug	Ryanair
29 Aug - 01 Sep	Air Serbia
28 Aug - 31 Aug	Air Serbia
21 Aug - 24 Aug	Air Serbia
21 Aug - 18 Sep	Ryanair
26 Aug - 30 Aug	Austrian Airlines
12 Aug - 15 Aug	Ryanair
19 Aug - 22 Aug	Ryanair
17 Aug - 24 Aug	Ryanair
18 Aug - 22 Aug	Ryanair
22 Aug - 02 Sep	Austrian Airlines
21 Aug - 18 Sep	Bulgaria Air	direct

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

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 August from $133

Return flights