Cheapest one-way flights from Cologne to Sofia in September from $25

AirHint found the following cheapest one-way flights from Cologne (CGN) to Sofia (SOF) in September 2025 (see full year).

One-Way flights

29 Sep Ryanair direct
05 Sep Ryanair direct
22 Sep Ryanair direct
19 Sep Ryanair direct
10 Sep Ryanair
03 Sep Ryanair
01 Sep Ryanair direct
02 Sep Ryanair
20 Sep Ryanair
14 Sep Ryanair

Also check the deals for return flights from Cologne to Sofia in September.

Skyscanner

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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