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

Return flights

30 Jul - 06 Aug	Eurowings
30 Jul - 01 Aug	Eurowings
30 Jul - 04 Aug	Eurowings
31 Jul - 04 Aug	Pegasus Airlines
31 Jul - 05 Aug	Pegasus Airlines
30 Jul - 03 Aug	Eurowings
29 Jul - 02 Aug	Pegasus Airlines
29 Jul - 01 Aug	Pegasus Airlines
31 Jul - 03 Aug	Pegasus Airlines
30 Jul - 02 Aug	Eurowings
29 Jul - 31 Jul	Pegasus Airlines
27 Jul - 29 Jul	Eurowings
28 Jul - 29 Jul	Corendon Airlines
27 Jul - 31 Jul	Eurowings
28 Jul - 30 Jul	Pegasus Airlines
27 Jul - 28 Jul	Ryanair

Also check the deals for one-way flights from Cologne to Sofia in July.

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 Cologne to Sofia in July from 261€

Return flights