AirHint found the following cheapest return flights from Cologne (CGN) to Sofia (SOF) in April 2026 (see full year).

Return flights

24 Apr - 15 May	Ryanair	direct
24 Apr - 01 May	Ryanair	direct
24 Apr - 10 May	Ryanair	direct
24 Apr - 26 Apr	Ryanair	direct
19 Apr - 01 May	Ryanair	direct
24 Apr - 03 May	Ryanair	direct
19 Apr - 24 Apr	Ryanair	direct
19 Apr - 10 May	Ryanair	direct
20 Apr - 24 Apr	Ryanair
19 Apr - 03 May	Ryanair	direct
16 Apr - 19 Apr	Ryanair
27 Apr - 30 Apr	Ryanair
03 Apr - 19 Apr	Ryanair	direct
30 Apr - 03 May	Lufthansa
03 Apr - 24 Apr	Ryanair	direct
02 Apr - 07 Apr	Ryanair
03 Apr - 06 Apr	Austrian Airlines

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

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 April from 102€

Return flights