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

Return flights

29 Aug - 03 Sep	Austrian Airlines
25 Aug - 03 Sep	SWISS
29 Aug - 06 Sep	Austrian Airlines
21 Aug - 04 Sep	Austrian Airlines
24 Aug - 07 Sep	Austrian Airlines
05 Aug - 07 Aug	Air Serbia
23 Aug - 30 Aug	LOT
15 Aug - 30 Aug	LOT
17 Aug - 30 Aug	LOT
16 Aug - 30 Aug	LOT
20 Aug - 27 Aug	Lufthansa
05 Aug - 12 Aug	Lufthansa
12 Aug - 14 Aug	Air Serbia
13 Aug - 16 Aug	LOT
18 Aug - 28 Aug	LOT
23 Aug - 07 Sep	Air Serbia

Also check the deals for one-way flights from Paris to Sofia 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 Paris to Sofia in August from 174€

Return flights