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

Return flights

29 Aug - 19 Sep	Ryanair	direct
25 Aug - 01 Sep	Ryanair
07 Aug - 11 Aug	Ryanair
29 Aug - 12 Sep	Ryanair	direct
08 Aug - 12 Aug	Ryanair
29 Aug - 08 Sep	Ryanair	direct
29 Aug - 31 Aug	Ryanair
08 Aug - 11 Aug	Ryanair
29 Aug - 05 Sep	Ryanair	direct
15 Aug - 01 Sep	Ryanair
22 Aug - 12 Sep	Ryanair	direct
25 Aug - 12 Sep	Ryanair	direct
08 Aug - 10 Aug	Ryanair
22 Aug - 08 Sep	Ryanair	direct
25 Aug - 08 Sep	Ryanair	direct
22 Aug - 25 Aug	Ryanair
11 Aug - 13 Aug	Ryanair
21 Aug - 25 Aug	Ryanair
25 Aug - 29 Aug	Ryanair
22 Aug - 26 Aug	Ryanair

Also check the deals for one-way flights from Cologne 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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Cheapest return flights from Cologne to Sofia in August from $160

Return flights