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

Return flights

25 Aug - 29 Aug	Ryanair
24 Aug - 31 Aug	Eurowings
15 Aug - 19 Aug	Ryanair
25 Aug - 03 Sep	Ryanair
30 Aug - 02 Sep	easyJet
12 Aug - 19 Aug	Eurowings
25 Aug - 01 Sep	Ryanair
27 Aug - 01 Sep	Ryanair
26 Aug - 31 Aug	Ryanair
16 Aug - 19 Aug	Ryanair
07 Aug - 13 Aug	Ryanair
23 Aug - 26 Aug	Ryanair
26 Aug - 01 Sep	Eurowings
05 Aug - 10 Aug	Air Serbia
15 Aug - 17 Aug	Ryanair
24 Aug - 08 Sep	SKY express
24 Aug - 01 Sep	SKY express

Also check the deals for one-way flights from Duesseldorf 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 Duesseldorf to Sofia in August from $186

Return flights